CN203660064U - High-efficiency transmit-receive antenna array apparatus - Google Patents
High-efficiency transmit-receive antenna array apparatus Download PDFInfo
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- CN203660064U CN203660064U CN201320661568.9U CN201320661568U CN203660064U CN 203660064 U CN203660064 U CN 203660064U CN 201320661568 U CN201320661568 U CN 201320661568U CN 203660064 U CN203660064 U CN 203660064U
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Abstract
The utility model discloses a high-efficiency transmit-receive antenna array apparatus consisting of an antenna towing plate (100) and an antenna feed plate (200), wherein the antenna towing plate (100) is vertically arranged above the antenna feed plate (200) at an interval, the antenna towing plate (100) is a single-layer PCB flat plate, eight coupling units (110) which are made of rectangular metals are uniformly arranged on the surface of the antenna towing plate (100), the antenna feed plate (200) is a double-layer PCB flat plate, the lower layer of the antenna feed plate (200) is a metal ground layer (210), the upper layer is a feed layer (220) which comprises a feed network and eight rectangular radiation units (230), and the eight rectangular radiation units (230) are uniformly arranged and connected with the feed network. The high-efficiency transmit-receive antenna array apparatus is characterized in that through the feed network in the feed layer (220), the eight rectangular radiation units (230) can be supplied with electricity and two orthogonal polarization high-efficiency radiations can be achieved; the apparatus can be applied to all frequency ranges of wireless communication. Through adoption of the technical solution of the high-efficiency transmit-receive antenna array apparatus, the apparatus high in frequency width. The apparatus is also advantaged by small size, simple structure and high gain.
Description
Technical field
The utility model relates to 4G antenna, more particularly, relates to the key technology MIMO(multichannel input and output of a kind of 4G) antenna.
Background technology
Develop into the third generation (3G) with person's mobile communication technology, the particularly appearance of intelligent terminal, sharply expanded to the demand of Mobile data in market, and current 3G technology is the technology developing based on voice communication originally, owing to being subject to the restriction of Mobile data bandwidth, to Mobile data, can not meet developing rapidly of Mobile data demand at present.The input and output of MIMO(multichannel) multi-antenna technology is a key technology in 4G, can greatly increase the capacity of wireless communication system, and effectively improve the performance of wireless communication system, is applicable to very much the requirement to high data rate in future mobile communication system.The input and output of MIMO(multichannel) multi-antenna technology is all to use multiple element antenna at wireless link two ends, by the technology that sends diversity and receive diversity and combine, how in small space, to settle multiple antennas, avoid the phase mutual interference between antenna simultaneously, the high radiation efficiency of realizing each antenna improves the capacity of wireless communication system, and this is a challenge to Antenna Design.And dual polarized antenna can become a kind of attainable technical approach of the many antennas of MIMO.
Thus, a kind of novel efficient dual-mode antenna array apparatus can be realized dual polarization, as the input and output of a kind of MIMO(multichannel) many antennas implementation, meet the demand of 4G mobile system and wireless transmission.
Summary of the invention
The purpose of this utility model is to provide a kind of novel efficient dual-mode antenna array apparatus, has the features such as gain is high, volume is little, designs simplification.
According to the utility model, a kind of dual-mode antenna array apparatus is efficiently provided, it is made up of antenna towing plate (100) and antenna feed electroplax (200); Being placed on above antenna feed electroplax (200) of antenna towing plate (100) perpendicular separation, antenna towing plate (100) is individual layer PCB flat board, and its surface uniform is being arranged eight coupling units (110), and eight coupling units (110) are all rectangular metal; Antenna feed electroplax (200) is double-deck PCB flat board, its lower floor is layer of metal stratum (210), upper strata is feed layer (220), and feed layer (220) has comprised feeding network and interconnective eight the evenly distributed rectangular radiation unit (230) of feeding network; This efficient dual-mode antenna array apparatus has been realized the high efficiency radiation of two orthogonal polarizations to eight radiating elements (230) feed through the feeding network in feed layer (220).
According to the utility model, described efficient dual-mode antenna array apparatus, antenna feed electroplax (200) is double-deck PCB flat board, its lower floor is layer of metal stratum (210), upper strata is feed layer (220), and feed layer (220) has comprised feeding network and interconnective eight the evenly distributed rectangular radiation unit (230) of feeding network, feeding network in feed layer (220) is by microstrip line one (410), microstrip line two (420), microstrip line three (430), microstrip line four (440), microstrip line five (450), microstrip line six (460), microstrip line seven (470), microstrip line eight (480), microstrip line nine (490), microstrip line ten (495) compositions, the microstrip line length of same numeral is identical with width, microstrip line length or the width of different labels are not identical, wherein microstrip line one (410), the width of microstrip line ten (495) is identical, but they are less than the width of microstrip line two (420), the width of microstrip line two (420) is less than microstrip line three (430), microstrip line four (440), microstrip line five (450), microstrip line six (460), microstrip line seven (470), microstrip line eight (480), the width of microstrip line nine (490), the length difference and the width of microstrip line three (430), microstrip line four (440), microstrip line five (450), microstrip line six (460), microstrip line seven (470), microstrip line eight (480), microstrip line nine (490) is identical.
According to the utility model, described efficient dual-mode antenna array apparatus, signal code is through node zero (300) shunting, electric current is through the microstrip line one (410) of connect in parallel with upside and downside, microstrip line two (420), microstrip line three (430) flows into two nodes five (350) of upper-lower position symmetry, electric current is in node five (350) shuntings, electric current is the microstrip line one (410) through left side at upper and lower two ends respectively, microstrip line two (420), microstrip line seven (470) and right side microstrip line one (410), microstrip line two (420), microstrip line eight (480) flows into four nodes six (360) of position symmetry up and down, wherein the length of microstrip line seven (470) will be longer than the length of microstrip line eight (480), electric current is in node six (360) shunting, and electric current is eight radiating elements of vertical direction center feed-in (230) at eight radiating elements (230) through the microstrip line one (410) of connect in parallel with upside and downside, microstrip line two (420).
According to the utility model, described efficient dual-mode antenna array apparatus, signal code, through node one (310) shunting, is surveyed nodes of locations two (320) and lower position node three (330) in the microstrip line one (410) of electric current process connect in parallel with upside and downside, microstrip line two (420), microstrip line four (440), microstrip line five (450) inflows; The length of microstrip line four (440) is greater than the length of microstrip line five (450); Electric current is through upper side gusset two (320) shuntings, and electric current flows into four nodes four (340) of position symmetry up and down through microstrip line one (410), microstrip line two (420), the microstrip line nine (490) of left and right parallel connection; Electric current is through node four (340) shuntings, electric current is through microstrip line one (410), microstrip line two (420), microstrip line six (460), the microstrip line ten (495) of upper and lower sides parallel connection, at eight radiating elements of horizontal level center feed-in (230) of eight radiating elements (230), the wherein concavo-convex or serpentine shape in microstrip line one (410), microstrip line two (420), microstrip line six (460) the composition left and right of top, the length of microstrip line one (410), microstrip line two (420) and microstrip line six (460) is greater than the length of microstrip line ten (495).
According to the utility model, described efficient dual-mode antenna array apparatus, in feeder panel (200) and interconnective eight the rectangular radiation unit of feeding network (230) mutually across a certain distance, symmetric arrays, the symmetrical corresponding coupling unit (110) of arranging in each radiating element (230) top.
Accompanying drawing explanation
Above-mentioned and other feature, character and advantage of the present utility model is by by becoming more obvious below in conjunction with accompanying drawing to the detailed description of embodiment, and identical Reference numeral represents identical feature all the time in the accompanying drawings, wherein:
Fig. 1,2,3, the 4th, according to the structure chart providing of the efficient dual-mode antenna array apparatus of the utility model; Listed in Fig. 1, a kind of dual-mode antenna array apparatus efficiently, it is made up of antenna towing plate (100) and antenna feed electroplax (200); Being placed on above antenna feed electroplax (200) of antenna towing plate (100) perpendicular separation, antenna towing plate (100) is individual layer PCB flat board, and its surface uniform is being arranged eight coupling units (110), and eight coupling units (110) are all rectangular metal; Antenna feed electroplax (200) is double-deck PCB flat board, its lower floor is layer of metal stratum (210), upper strata is feed layer (220), and feed layer (220) has comprised feeding network and interconnective eight the evenly distributed rectangular radiation unit (230) of feeding network; This efficient dual-mode antenna array apparatus has been realized the high efficiency radiation of two orthogonal polarizations to eight radiating elements (230) feed through the feeding network in feed layer (220).
Embodiment
Fig. 1,2, the 4th, the first implementation of the present utility model, further illustrates the technical solution of the utility model below in conjunction with accompanying drawing 1,2,4.
With reference to figure 1 finding, a kind of dual-mode antenna array apparatus efficiently, it is made up of antenna towing plate (100) and antenna feed electroplax (200); Being placed on above antenna feed electroplax (200) of antenna towing plate (100) perpendicular separation, antenna towing plate (100) is individual layer PCB flat board, and its surface uniform is being arranged eight coupling units (110), and eight coupling units (110) are all rectangular metal; Antenna feed electroplax (200) is double-deck PCB flat board, its lower floor is layer of metal stratum (210), upper strata is feed layer (220), and feed layer (220) has comprised feeding network and interconnective eight the evenly distributed rectangular radiation unit (230) of feeding network; This efficient dual-mode antenna array apparatus has been realized the high efficiency radiation of two orthogonal polarizations to eight radiating elements (230) feed through the feeding network in feed layer (220).
With reference to figure 2 findings, further show the structure of the upper strata feed layer (220) of antenna feed electroplax (200), antenna feed electroplax (200) is double-deck PCB flat board, its lower floor is layer of metal stratum (210), upper strata is feed layer (220), and feed layer (220) has comprised feeding network and interconnective eight the evenly distributed rectangular radiation unit (230) of feeding network, feeding network in feed layer (220) is by microstrip line one (410), microstrip line two (420), microstrip line three (430), microstrip line four (440), microstrip line five (450), microstrip line six (460), microstrip line seven (470), microstrip line eight (480), microstrip line nine (490), microstrip line ten (495) compositions, the microstrip line length of same numeral is identical with width, microstrip line length or the width of different labels are not identical, wherein microstrip line one (410), the width of microstrip line ten (495) is identical, but they are less than the width of microstrip line two (420), the width of microstrip line two (420) is less than microstrip line three (430), microstrip line four (440), microstrip line five (450), microstrip line six (460), microstrip line seven (470), microstrip line eight (480), the width of microstrip line nine (490), the length difference and the width of microstrip line three (430), microstrip line four (440), microstrip line five (450), microstrip line six (460), microstrip line seven (470), microstrip line eight (480), microstrip line nine (490) is identical.
Signal code is through node zero (300) shunting, electric current is through the microstrip line one (410) of connect in parallel with upside and downside, microstrip line two (420), microstrip line three (430) flows into two nodes five (350) of upper-lower position symmetry, electric current is in node five (350) shuntings, electric current is the microstrip line one (410) through left side at upper and lower two ends respectively, microstrip line two (420), microstrip line seven (470) and right side microstrip line one (410), microstrip line two (420), microstrip line eight (480) flows into four nodes six (360) of position symmetry up and down, wherein the length of microstrip line seven (470) will be longer than the length of microstrip line eight (480), electric current is in node six (360) shunting, and electric current is eight radiating elements of vertical direction center feed-in (230) at eight radiating elements (230) through the microstrip line one (410) of connect in parallel with upside and downside, microstrip line two (420).
At another signal feed place, signal code, through node one (310) shunting, is surveyed nodes of locations two (320) and lower position node three (330) in the microstrip line one (410) of electric current process connect in parallel with upside and downside, microstrip line two (420), microstrip line four (440), microstrip line five (450) inflows; The length of microstrip line four (440) is greater than the length of microstrip line five (450); Electric current is through upper side gusset two (320) shuntings, and electric current flows into four nodes four (340) of position symmetry up and down through microstrip line one (410), microstrip line two (420), the microstrip line nine (490) of left and right parallel connection; Electric current is through node four (340) shuntings, electric current is through microstrip line one (410), microstrip line two (420), microstrip line six (460), the microstrip line ten (495) of upper and lower sides parallel connection, at eight radiating elements of horizontal level center feed-in (230) of eight radiating elements (230), the wherein concavo-convex or serpentine shape in microstrip line one (410), microstrip line two (420), microstrip line six (460) the composition left and right of top, the length of microstrip line one (410), microstrip line two (420) and microstrip line six (460) is greater than the length of microstrip line ten (495).
In feeder panel (200) and interconnective eight the rectangular radiation unit of feeding network (230) mutually across a certain distance, symmetric arrays, the symmetrical corresponding coupling unit (110) of arranging in each radiating element (230) top.
With reference to figure 4 findings, the arrangement position of eight coupling units (110) in antenna towing plate (100), antenna towing plate (100) is individual layer PCB flat board, its surface uniform is being arranged eight coupling units (110), eight coupling units (110) are all rectangular metal, being placed on above antenna feed electroplax (200) of antenna towing plate (100) perpendicular separation, and antenna feed electroplax (200) has certain interval.
Fig. 1,3, the 4th, the second implementation of the present utility model, further illustrates the technical solution of the utility model below in conjunction with accompanying drawing 1,3,4.
With reference to figure 1 finding, a kind of dual-mode antenna array apparatus efficiently, it is made up of antenna towing plate (100) and antenna feed electroplax (200); Being placed on above antenna feed electroplax (200) of antenna towing plate (100) perpendicular separation, antenna towing plate (100) is individual layer PCB flat board, and its surface uniform is being arranged eight coupling units (110), and eight coupling units (110) are all rectangular metal; Antenna feed electroplax (200) is double-deck PCB flat board, its lower floor is layer of metal stratum (210), upper strata is feed layer (220), and feed layer (220) has comprised feeding network and interconnective eight the evenly distributed rectangular radiation unit (230) of feeding network; This efficient dual-mode antenna array apparatus has been realized the high efficiency radiation of two orthogonal polarizations to eight radiating elements (230) feed through the feeding network in feed layer (220).
With reference to figure 3 findings, further show the structure of the upper strata feed layer (220) of antenna feed electroplax (200), antenna feed electroplax (200) is double-deck PCB flat board, its lower floor is layer of metal stratum (210), upper strata is feed layer (220), and feed layer (220) has comprised feeding network and interconnective eight the evenly distributed rectangular radiation unit (230) of feeding network, feeding network in feed layer (220) is by microstrip line one (410), microstrip line two (420), microstrip line three (430), microstrip line four (440), microstrip line five (450), microstrip line six (460), microstrip line seven (470), microstrip line eight (480), microstrip line nine (490), microstrip line ten (495) compositions, the microstrip line length of same numeral is identical with width, microstrip line length or the width of different labels are not identical, wherein microstrip line one (410), the width of microstrip line ten (495) is identical, but they are less than the width of microstrip line two (420), the width of microstrip line two (420) is less than microstrip line three (430), microstrip line four (440), microstrip line five (450), microstrip line six (460), microstrip line seven (470), microstrip line eight (480), the width of microstrip line nine (490), the length difference and the width of microstrip line three (430), microstrip line four (440), microstrip line five (450), microstrip line six (460), microstrip line seven (470), microstrip line eight (480), microstrip line nine (490) is identical.
Signal code is through node zero (300) shunting, electric current flows into two nodes four (340) of upper-lower position symmetry through microstrip line one (410), microstrip line two (420), microstrip line three (430), the microstrip line four (440) of connect in parallel with upside and downside, wherein the length of microstrip line three (430) will be longer than the length of microstrip line four (440); Electric current is in node four (340) shunting, electric current through microstrip line one (410), microstrip line two (420), the microstrip line six (460) of left and right parallel connection, flow into four nodes five (350) of position symmetry up and down; Electric current is in node five (350) shuntings, electric current is through microstrip line one (410), microstrip line two (420), microstrip line eight (480), the microstrip line ten (495) of connect in parallel with upside and downside, respectively at eight radiating elements of horizontal level center feed-in (230) of eight radiating elements (230), the wherein concavo-convex or serpentine shape in microstrip line one (410), microstrip line two (420), microstrip line eight (480) the composition left and right in left side, the length of microstrip line one (410), microstrip line two (420), microstrip line eight (480) is greater than the length of microstrip line ten (495).
At another signal feed place, it is characterized in that, signal code is through node one (310) shunting, electric current is through the microstrip line one (410) of connect in parallel with upside and downside, microstrip line seven (470) flows into two nodes two (320) of upper-lower position symmetry, electric current is in node two (320) shuntings, electric current is at two ends, left and right process microstrip line one (410), microstrip line two (420), microstrip line five (450), microstrip line nine (490) flows into respectively four nodes three (330) of position symmetry up and down, wherein the length of microstrip line nine (490) will be longer than the length of microstrip line five (450), electric current is in node three (330) shunting, and electric current is eight radiating elements of vertical direction center feed-in (230) at eight radiating elements (230) through the microstrip line one (410) of connect in parallel with upside and downside, microstrip line two (420).
In feeder panel (200) and interconnective eight the rectangular radiation unit of feeding network (230) mutually across a certain distance, symmetric arrays, the symmetrical corresponding coupling unit (110) of arranging in each radiating element (230) top.
With reference to figure 4 findings, the arrangement position of eight coupling units (110) in antenna towing plate (100), antenna towing plate (100) is individual layer PCB flat board, its surface uniform is being arranged eight coupling units (110), eight coupling units (110) are all rectangular metal, being placed on above antenna feed electroplax (200) of antenna towing plate (100) perpendicular separation, and antenna feed electroplax (200) has certain interval.
According to the utility model; described efficient dual-mode antenna array apparatus; by feed layer (220) and wherein comprise the eight element antenna arrays that interconnective eight radiating elements of feeding network and feeding network (230) form, the 16 unit battle arrays take this eight element antennas array as basis composition are all in this Patent right requirement protection range.
Above-described embodiment is available to be familiar with person in the art and to realize or use of the present utility model; those skilled in the art can be in the situation that not departing from invention thought of the present utility model; above-described embodiment is made to various modifications or variation; thereby protection range of the present utility model do not limit by above-described embodiment, and it should be the maximum magnitude that meets the inventive features that claims mention.
Claims (8)
1. an efficient dual-mode antenna array apparatus, is characterized in that, it is made up of antenna towing plate (100) and antenna feed electroplax (200); Being placed on above antenna feed electroplax (200) of antenna towing plate (100) perpendicular separation, antenna towing plate (100) is individual layer PCB flat board, and its surface uniform is being arranged eight coupling units (110), and eight coupling units (110) are all rectangular metal; Antenna feed electroplax (200) is double-deck PCB flat board, its lower floor is layer of metal stratum (210), upper strata is feed layer (220), and feed layer (220) has comprised feeding network and interconnective eight the evenly distributed rectangular radiation unit (230) of feeding network; This efficient dual-mode antenna array apparatus has been realized the high efficiency radiation of two orthogonal polarizations to eight radiating elements (230) feed through the feeding network in feed layer (220).
2. efficient dual-mode antenna array apparatus as claimed in claim 1, it is characterized in that, antenna feed electroplax (200) is double-deck PCB flat board, its lower floor is layer of metal stratum (210), upper strata is feed layer (220), and feed layer (220) has comprised feeding network and interconnective eight the evenly distributed rectangular radiation unit (230) of feeding network, feeding network in feed layer (220) is by microstrip line one (410), microstrip line two (420), microstrip line three (430), microstrip line four (440), microstrip line five (450), microstrip line six (460), microstrip line seven (470), microstrip line eight (480), microstrip line nine (490), microstrip line ten (495) compositions, the microstrip line length of same numeral is identical with width, microstrip line length or the width of different labels are not identical, wherein microstrip line one (410), the width of microstrip line ten (495) is identical, but they are less than the width of microstrip line two (420), the width of microstrip line two (420) is less than microstrip line three (430), microstrip line four (440), microstrip line five (450), microstrip line six (460), microstrip line seven (470), microstrip line eight (480), the width of microstrip line nine (490), the length difference and the width of microstrip line three (430), microstrip line four (440), microstrip line five (450), microstrip line six (460), microstrip line seven (470), microstrip line eight (480), microstrip line nine (490) is identical.
3. efficient dual-mode antenna array apparatus as claimed in claim 1, it is characterized in that, signal code is through node zero (300) shunting, electric current is through the microstrip line one (410) of connect in parallel with upside and downside, microstrip line two (420), microstrip line three (430) flows into two nodes five (350) of upper-lower position symmetry, electric current is in node five (350) shuntings, electric current is the microstrip line one (410) through left side at upper and lower two ends respectively, microstrip line two (420), microstrip line seven (470) and right side microstrip line one (410), microstrip line two (420), microstrip line eight (480) flows into four nodes six (360) of position symmetry up and down, wherein the length of microstrip line seven (470) will be longer than the length of microstrip line eight (480), electric current is in node six (360) shunting, and electric current is eight radiating elements of vertical direction center feed-in (230) at eight radiating elements (230) through the microstrip line one (410) of connect in parallel with upside and downside, microstrip line two (420).
4. efficient dual-mode antenna array apparatus as claimed in claim 1, it is characterized in that, signal code, through node one (310) shunting, is surveyed nodes of locations two (320) and lower position node three (330) in the microstrip line one (410) of electric current process connect in parallel with upside and downside, microstrip line two (420), microstrip line four (440), microstrip line five (450) inflows; The length of microstrip line four (440) is greater than the length of microstrip line five (450); Electric current is through upper side gusset two (320) shuntings, and electric current flows into four nodes four (340) of position symmetry up and down through microstrip line one (410), microstrip line two (420), the microstrip line nine (490) of left and right parallel connection; Electric current is through node four (340) shuntings, electric current is through microstrip line one (410), microstrip line two (420), microstrip line six (460), the microstrip line ten (495) of upper and lower sides parallel connection, at eight radiating elements of horizontal level center feed-in (230) of eight radiating elements (230), the wherein concavo-convex or serpentine shape in microstrip line one (410), microstrip line two (420), microstrip line six (460) the composition left and right of top, the length of microstrip line one (410), microstrip line two (420) and microstrip line six (460) is greater than the length of microstrip line ten (495).
5. efficient dual-mode antenna array apparatus as claimed in claim 1, it is characterized in that, signal code is through node zero (300) shunting, electric current flows into two nodes four (340) of upper-lower position symmetry through microstrip line one (410), microstrip line two (420), microstrip line three (430), the microstrip line four (440) of connect in parallel with upside and downside, wherein the length of microstrip line three (430) will be longer than the length of microstrip line four (440); Electric current is in node four (340) shunting, electric current through microstrip line one (410), microstrip line two (420), the microstrip line six (460) of left and right parallel connection, flow into four nodes five (350) of position symmetry up and down; Electric current is in node five (350) shuntings, electric current is through microstrip line one (410), microstrip line two (420), microstrip line eight (480), the microstrip line ten (495) of connect in parallel with upside and downside, respectively at eight radiating elements of horizontal level center feed-in (230) of eight radiating elements (230), the wherein concavo-convex or serpentine shape in microstrip line one (410), microstrip line two (420), microstrip line eight (480) the composition left and right in left side, the length of microstrip line one (410), microstrip line two (420), microstrip line eight (480) is greater than the length of microstrip line ten (495).
6. efficient dual-mode antenna array apparatus as claimed in claim 1, it is characterized in that, signal code is through node one (310) shunting, electric current is through the microstrip line one (410) of connect in parallel with upside and downside, microstrip line seven (470) flows into two nodes two (320) of upper-lower position symmetry, electric current is in node two (320) shuntings, electric current is at two ends, left and right process microstrip line one (410), microstrip line two (420), microstrip line five (450), microstrip line nine (490) flows into respectively four nodes three (330) of position symmetry up and down, wherein the length of microstrip line nine (490) will be longer than the length of microstrip line five (450), electric current is in node three (330) shunting, and electric current is eight radiating elements of vertical direction center feed-in (230) at eight radiating elements (230) through the microstrip line one (410) of connect in parallel with upside and downside, microstrip line two (420).
7. efficient dual-mode antenna array apparatus as claimed in claim 1, it is characterized in that, in feeder panel (200) and interconnective eight the rectangular radiation unit of feeding network (230) mutually across a certain distance, symmetric arrays, the symmetrical corresponding coupling unit (110) of arranging in each radiating element (230) top.
8. efficient dual-mode antenna array apparatus as claimed in claim 1, by feed layer (220) and wherein comprise the eight element antenna arrays that interconnective eight radiating elements of feeding network and feeding network (230) form, the 16 unit battle arrays that can form as basis take this eight element antennas array.
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| CN201320661568.9U CN203660064U (en) | 2013-10-24 | 2013-10-24 | High-efficiency transmit-receive antenna array apparatus |
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| CN201320661568.9U CN203660064U (en) | 2013-10-24 | 2013-10-24 | High-efficiency transmit-receive antenna array apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104283003A (en) * | 2013-10-24 | 2015-01-14 | 林伟 | Efficient transmitting-receiving antenna array device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104283003A (en) * | 2013-10-24 | 2015-01-14 | 林伟 | Efficient transmitting-receiving antenna array device |
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