KR20170004235A

KR20170004235A - Multi-channel multiplexer

Info

Publication number: KR20170004235A
Application number: KR1020150094306A
Authority: KR
Inventors: 김효철; 김영호
Original assignee: 주식회사 이너트론
Priority date: 2015-07-01
Filing date: 2015-07-01
Publication date: 2017-01-11
Also published as: WO2017003042A1

Abstract

A multi-channel multiplexer includes a plurality of filters, wherein at least one of the plurality of filters includes a plurality of microstrip patterns patterned in an asymmetric structure, And a bridge pattern connecting the microstrip patterns to each other.

Description

Multi-channel multiplexer {MULTI-CHANNEL MULTIPLEXER}

An embodiment according to the concept of the present invention relates to a multi-channel multiplexer, and more particularly to a multi-channel multiplexer including a bridge pattern connecting a plurality of microstrip patterns patterned in an asymmetrical structure .

Various types of filters are applied to communication systems. A filter is a device that passes only a signal of a specific frequency band. Depending on the frequency band to be filtered, a low pass filter (LPF), a band pass filter (BPF), a high pass filter High Pass Filter (HPF), and Band Stop Filter (BSF).

A multiplexer is a device that can transmit and receive signals of various frequency bands through one antenna. The multiplexer can be composed of various filters.

SUMMARY OF THE INVENTION The present invention provides a multi-channel multiplexer including a bridge pattern for connecting a plurality of microstrip patterns patterned in an asymmetric structure to each other.

A multi-channel multiplexer according to an embodiment of the present invention includes a plurality of filters, and at least one of the plurality of filters includes a plurality of microstrip patterns patterned in an asymmetric structure and a bridge pattern connecting the plurality of microstrip patterns with each other.

According to an embodiment, one side of each of the plurality of microstrip line patterns may have an open structure, and the other side of each of the plurality of microstrip line patterns may have a ground structure.

According to an embodiment, the passband of the multichannel multiplexer may be wider than 7 percent of the center frequency and narrower than 13 percent.

According to an embodiment, the bridge pattern may have a stepped impedance structure.

According to an embodiment, the bridge pattern may comprise a curved section.

According to an embodiment, the bridge pattern may be implemented in a zigzag fashion.

The multi-channel multiplexer according to another embodiment of the present invention includes a low-pass filter, a first band-pass filter, and a second band-pass filter, wherein each of the first band-pass filter and the second band-pass filter has an asymmetric structure A plurality of patterned microstrip patterns and a bridge pattern connecting the plurality of microstrip patterns to one another.

According to an embodiment, the multi-channel multiplexer may be a triplexer.

And may include a first connection pattern for connecting the first band pass filter and the second band pass filter according to the embodiment.

According to an embodiment of the present invention, the antenna further includes a second connection pattern connecting the low-pass filter and the first connection pattern, and the second connection pattern may be connected to an antenna-side port.

An apparatus according to an embodiment of the present invention can be miniaturized by implementing a wideband multichannel multiplexer using a microstrip pattern.

In addition, by including bridge patterns of various shapes connecting a plurality of microstrip patterns constituting a wideband multichannel multiplexer, the degree of freedom of pattern design is improved.

Therefore, the multi-channel multiplexer according to the embodiment of the present invention can be configured as an asymmetric microstrip pattern, and the bridge pattern can be configured to utilize the empty space in some cases.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to more fully understand the drawings recited in the detailed description of the present invention, a detailed description of each drawing is provided.
1 is a block diagram of a multi-channel transceiver according to an embodiment of the present invention.
2 is a block diagram of the multi-channel multiplexer shown in FIG.
3 is an embodiment of the multi-channel multiplexer shown in FIG.

It is to be understood that the specific structural or functional description of embodiments of the present invention disclosed herein is for illustrative purposes only and is not intended to limit the scope of the inventive concept But may be embodied in many different forms and is not limited to the embodiments set forth herein.

The embodiments according to the concept of the present invention can make various changes and can take various forms, so that the embodiments are illustrated in the drawings and described in detail herein. It should be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms disclosed, but includes all modifications, equivalents, or alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms may be named for the purpose of distinguishing one element from another, for example, without departing from the scope of the right according to the concept of the present invention, the first element may be referred to as a second element, The component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like are used to specify that there are features, numbers, steps, operations, elements, parts or combinations thereof described herein, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning of the context in the relevant art and, unless explicitly defined herein, are to be interpreted as ideal or overly formal Do not.

1 is a block diagram of a multi-channel transceiver according to an embodiment of the present invention.

1, the multi-channel transceiver 10 includes a multi-channel multiplexer 100, a first transceiver module 210, a second transceiver module 220, and a third transceiver module 230 can do.

The multi-channel multiplexer 100 is an element capable of separating at least two frequency bands, and may mean a concept including a multiplexer, a triplexer, and the like.

Each of the transmission / reception modules 210, 220 and 230 can transmit / receive signals of different frequency bands.

According to the embodiment, the first transmission / reception module 210 can transmit and receive signals in the 824 MHz to 894 MHz frequency band, that is, the cellular 850 MHz band. In this case, the first transmission / reception module 210 may include a first resonant element 212 having a transmission frequency band of 869 MHz to 894 MHz and a second resonant element 214 having a reception frequency band of 824 MHz to 849 MHz. have.

The first resonant element 212 may be connected to the first port P1 and the second resonant element 214 may be connected to the second port P2.

According to the embodiment, the second transmission / reception module 220 can transmit and receive signals in the 1920 MHz to 2170 MHz frequency band, that is, the Universal Mobile Telecommunications System (UMTS) 2100 MHz band. In this case, the second transmission / reception module 220 may include a third resonant element 222 having a transmission frequency band of 2110 MHz to 2170 MHz and a fourth resonant element 224 having a reception frequency band of 1920 MHz to 1980 MHz. have.

The third resonant element 222 may be connected to the first port P3 and the fourth resonant element 224 may be connected to the fourth port P4.

According to the embodiment, the third transmission / reception module 230 can transmit / receive signals in the frequency band of 2500 MHz to 2690 MHz, that is, the LTE (Long Term Evolution) band of 2600 MHz. In this case, the third transmission / reception module 230 may include a fifth resonant element 232 having a transmission frequency band of 2620 MHz to 2690 MHz and a sixth resonant element 234 having a reception frequency band of 2500 MHz to 2570 MHz. have.

The fifth resonant element 232 may be connected to the fifth port P5 and the sixth resonant element 234 may be connected to the sixth port P6.

1 illustrates a case where each of the transmitting and receiving modules 210, 220 and 230 transmits and receives signals in a cellular 850 MHz band, a UMTS (Universal Mobile Telecommunications System) 2100 MHz band, and an LTE (Long Term Evolution) However, the technical scope of the present invention is not limited thereto.

Each of the resonant elements 212, 214, 222, 224, 232, and 234 may be implemented with a Low Temperature Co-fired Ceramics (LTCC) resonator according to an embodiment.

2 is a block diagram of the multi-channel multiplexer shown in FIG.

Referring to FIGS. 1 and 2, a multi-channel multiplexer 100 may include a plurality of filters 110, 120, and 130. Each of the plurality of filters 110, 120 and 130 includes a low pass filter (LPF) 110, a first band pass filter (BPF) 120 and a second band pass filter 130).

In this case, the multi-channel multiplexer 100 may be implemented as a triplexer.

The low pass filter 110 is connected to the first transceiver module 210 through a port Port 1 and the first band pass filter 120 is connected to the second transceiver module 220 through a port Port 2, The second band-pass filter 130 may be connected to the third transmission / reception module 230 through a port Port3.

The first connection pattern for connecting the first bandpass filter 120 and the second bandpass filter 130 includes a third path PATH3 and a fourth path PATH4, Pass filter 110 through a second connection pattern composed of a first path PATH1 and a second path PATH2. The second connection pattern may be connected to the antenna ANT through a port Port0.

According to an embodiment, the multi-channel multiplexer 100 may be configured with a combination of filters different from those of FIG.

3 is an embodiment of the multi-channel multiplexer shown in FIG.

Referring to FIGS. 2 and 3, the multi-channel multiplexer 100 includes a plurality of filters 110, 120, and 130.

The first band-pass filter 120 may include a plurality of microstrip patterns (PT1, PT2, PT3) patterned in an asymmetric structure.

The plurality of microstrip patterns PT1, PT2 and PT3 are connected to each other by bridge patterns BR1 and BR2.

The first microstrip pattern PT1 and the second microstrip pattern PT2 are connected by the first bridge pattern BR1 and the second microstrip pattern PT2 and the third microstrip pattern PT3 are connected by the second bridge pattern BR2. And can be connected by the bridge pattern BR2.

According to the embodiment, the bridge pattern may have a stepped impedance structure like the first bridge pattern BR1, or may have a straight structure like the second bridge pattern BR2.

One side of each of the microstrip patterns PT1, PT2 and PT3 may have an open structure like the first region R1 of the first microstrip pattern PT1.

The other side of each of the microstrip patterns PT1, PT2 and PT3 may have a ground structure like the second region R2 of the first microstrip pattern PT1.

The second band-pass filter 130 may include a plurality of microstrip patterns PT4, PT5, and PT6 patterned in an asymmetric structure like the first band-pass filter 120. [

The plurality of microstrip patterns PT4, PT5, and PT6 are connected to each other by the bridge patterns BR3 and BR4.

The fourth microstrip pattern PT4 and the fifth microstrip pattern PT5 are connected by the third bridge pattern BR3 and the fifth microstrip pattern PT5 and the sixth microstrip pattern PT6 are connected by the fourth bridge pattern BR3. And can be connected by the bridge pattern BR4.

According to the embodiment, the bridge pattern may have a structure including a curved section such as the third bridge pattern BR3, or may be implemented in a zigzag form such as the fourth bridge pattern BR4 . In this specification, the zigzag shape may broadly mean a shape including a section bent in opposite directions.

One side of each of the microstrip patterns PT4, PT5, and PT6 may have an open structure like the third region R3 of the fourth microstrip pattern PT4.

The other side of each of the microstrip patterns PT4, PT5, and PT6 may have a ground structure like the fourth region R4 of the fourth microstrip pattern PT4.

(For example, the first region R1 and the third region R3) and the other side is grounded (for example, the second region R2, the fourth region R4, (BR1 to BR5) in the case of the microstrip patterns (PT1 to PT6) formed of the stripe patterns (regions R4 to R4), the pass band width is less than 5 percent of the center frequency and has narrow band filter characteristics.

However, in the first band pass filter 120 and the second band pass filter 130 of FIG. 3, the ratio of the pass band to the center frequency is relatively high (for example, 7 Percent to less than 13 percent).

Table 1 above shows measurement data of the ratio of the pass band to the center frequency in each frequency band when the band pass filter is implemented as in the present invention and the ratio of the pass band to the center frequency in each frequency band is 8.1%, 12.2% and 7.3%, respectively, so that it can be confirmed that it is 7% or more and 13% or less.

That is, the multichannel multiplexer 100 according to the embodiment of the present invention is implemented with the microstrip patterns PT1 to PT6 to be advantageous in miniaturization, and can realize a wide bandwidth including the bridge patterns BR1 to BR4 do.

Particularly, by using a structure including a bent section such as the fourth bridge pattern BR4 and the fifth bridge pattern BR5, the filter can be realized in an asymmetrical form, and the empty space of the dielectric substrate can be utilized .

In addition, it is possible to design a desired filter characteristic by changing only the shape of the bridge patterns BR1 to BR5 with the structure of the microstrip patterns PT1 to PT6 left unchanged.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: Multichannel transceiver
100: a multi-channel multiplexer
110, 120, 130: filter
210, 220, 230: transmission / reception module
212, 214, 222, 224, 232, 234:

Claims

Wherein the at least one of the plurality of filters comprises a plurality of filters,
A plurality of microstrip patterns patterned in an asymmetric structure; And
And a bridge pattern connecting the plurality of microstrip patterns to each other.

The method according to claim 1,
Wherein one side of each of the plurality of microstrip line patterns has an open structure and the other side of each of the plurality of microstrip line patterns has a ground structure.

The method according to claim 1,
Wherein the passband width of the multi-channel multiplexer is wider than 7 percent of the center frequency and less than 13 percent.

The method according to claim 1,
Multi-channel multiplexer with stepped impedance structure.

The method according to claim 1,
A multi-channel multiplexer comprising a curved section.

The method according to claim 1,
Multichannel multiplexer implemented in zigzag form.

Low pass filter;
A first band-pass filter; And
And a second band-pass filter, wherein each of the first band-pass filter and the second band-
A plurality of microstrip patterns patterned in an asymmetric structure; And
And a bridge pattern connecting the plurality of microstrip patterns to each other.

8. The method of claim 7,
Wherein the multi-channel multiplexer is a triplexer.

8. The method of claim 7,
And a first connection pattern connecting the first band pass filter and the second band pass filter.

10. The method of claim 9,
And a second connection pattern connecting the low-pass filter and the first connection pattern,
And the second connection pattern is connected to a port on the antenna side.