CN110212929A - A kind of harmonics restraint transmitter - Google Patents
A kind of harmonics restraint transmitter Download PDFInfo
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- CN110212929A CN110212929A CN201910435569.3A CN201910435569A CN110212929A CN 110212929 A CN110212929 A CN 110212929A CN 201910435569 A CN201910435569 A CN 201910435569A CN 110212929 A CN110212929 A CN 110212929A
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- low frequency
- signal
- edge coupler
- harmonics restraint
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a kind of harmonics restraint transmitters, comprising: data modulator, ring oscillator, phase shifter, harmonics restraint edge coupler, power amplifier and antenna；Wherein data modulator is modulated for receiving digital baseband signal to be launched, and to the signal to be transmitted, generates low frequency modulated signal；Ring oscillator, the low frequency modulated signal for being provided according to the data modulator export the low frequency signal at one group of equiphase interval；Phase shifter generates second group and third group low frequency signal for carrying out phase shift processing to the low frequency signal respectively；Harmonics restraint edge coupler exports high frequency staircase waveform for carrying out edge coupling to three groups of low frequency signals.The harmonics restraint transmitter of the present embodiment, ring oscillator and phase shifter work in low frequency, reduce circuit power consumption；The staircase waveform that near sinusoidal signal can be exported, has harmonic restraining function, is not necessarily to inductance capacitance network, reduces circuit area.
Description
Technical field
The present invention relates to a kind of transmitters, and in particular to a kind of harmonics restraint transmitter belongs to Circuits and Systems technology neck
Domain.
Background technique
Radio frequency transmitter in the field of communications using very extensive, radio frequency transmitter in the prior art,
Its front-end circuit is made of phaselocked loop, frequency mixer and power amplifier.
During the work time, the high-frequency signal and baseband signal generated by phaselocked loop passes through frequency mixer to radio frequency transmitter
Realize modulated process, the brewed radiofrequency signal of frequency mixer output after power amplifier by emitting.
The radio frequency transmitter of the above-mentioned type, phaselocked loop, frequency mixer and power amplifier all work in high frequency, cause be
Power consumption of uniting is higher.In addition, the power supply of the associated components of base band, needs the supply current from power supply to ground, less radio-frequency is caused to be sent out
It penetrates chance and consumes biggish electric current, it is unfavorable that this requires the low power capabilities of radio frequency transmitter.
It is a kind of that the low-power transmitters with edge coupling are locked in the paper of Jagdish Pandey et al. based on injection
It shows, entitled " the A Sub-100 μ W MICS/ISM Band Transmitter Based on Injection- of the paper
Locking and Frequency Multiplication ", in IEEE Journal of Solid-State
Circuits, vol.46, no.5, pp. 1049-1058, although the circuit of May 2011. combines injection locking and edge coupling
Technology reduces transmitter power consumption, but transmitter needs this meeting by LC filter network filters out harmonic component in piece or outside piece
Increase chip area or piece external component.Once LC network is also required to correspondingly become in addition, transmitter frequency changes
Change, this makes troubles to the broadband application of transmitter.
In order to save the LC network in transmitter and solve the inconvenience in broadband application, opened in wireless communication system of today
Begin to use harmonics restraint transmitter, this kind of transmitter uses multichannel phase shift synthetic technology.However, current harmonics restraint transmitter
Middle oscillator, phase shifter and power amplifier also all work in high frequency, this makes transmitter power consumption higher.
Therefore, radio frequency transmitter in the prior art, there are power consumption is larger and the biggish defect of circuit area；And show
Some harmonics restraint transmitters, although inhibiting harmonic component without LC network, there are still the problems that power consumption is larger.
Summary of the invention
The present invention exactly aiming at the problems existing in the prior art, provides a kind of harmonics restraint transmitter, the technical solution
The harmonics restraint transmitter is able to suppress harmonic component in the case where being not necessarily to LC network, reduces circuit power consumption, reduces circuit face
Product.
To achieve the goals above, technical scheme is as follows, a kind of harmonics restraint transmitter, which is characterized in that
The transmitter includes data modulator, ring oscillator, phase shifter, harmonics restraint edge coupler, power amplifier and day
Line；
The data modulator is modulated the signal to be transmitted for receiving digital baseband signal to be launched,
Generate low frequency modulated signal；
The ring oscillator, the low frequency modulated signal for being provided according to the data modulator generate one group of road N
Equiphase interval low frequency signal；
The phase shifter generates second group and third for carrying out phase shift processing to first group of low frequency signal respectively
The group road N low frequency signal；
Harmonics restraint edge coupler carries out edge coupling for low frequency signal respectively, exports N frequency multiplication staircase waveform；
The power amplifier improves output power of transmitter for carrying out power amplification to the N frequency multiplication staircase waveform；
The antenna, for emitting the electromagnetic pulse signal of specific frequency.
As an improvement of the present invention, the phase shifter includes phase coarse tuning circuit and phase fine tuning circuit；Wherein, institute
Phase coarse tuning circuit is stated, for realizing the rough adjustment of phase；The phase fine tuning circuit, for realizing the accurate tune of phase
It is whole.
As an improvement of the present invention, harmonics restraint edge coupler includes edge coupler 1, edge coupler
2 and edge coupler 3, for carrying out edge coupling respectively to first, second, and third group of low frequency signal, export N times
Frequency staircase waveform.
As an improvement of the present invention, the phase difference of adjacent signals is in the road the N low frequency signal of ring oscillator output
(180+180/N)°。
As an improvement of the present invention, the phase shifter to the first group of road N low frequency signal difference phase shift (45/N) ° and
After (90/N) °, second group and third group N road low frequency signal is obtained.
As an improvement of the present invention, harmonics restraint edge coupler has harmonic restraining function, can export N
Frequency multiplication staircase waveform is respectively increased up to 47.1dBc and 48.3dBc compared to square-wave signal with quintuple harmonics degree of suppression three times
36.5dB and 34.3dB, the edge coupler 1, edge coupler 2 and edge coupler 3 are made of switch MOS pipe, often
A edge coupler circuit includes the road N input signal, 1 tunnel output signal.
As an improvement of the present invention, the middle switch of the edge coupler 1, edge coupler 2 and edge coupler 3
The ratio between mutual conductance of metal-oxide-semiconductor is
As an improvement of the present invention, the input letter of the edge coupler 1, edge coupler 2 and edge coupler 3
Number be respectively first group, second group and third group N road low frequency signal；Its output end collects electric current by parallel-connection structure, shares negative
It carries.
Compared with the existing technology, the invention has the advantages that, 1) oscillator and phase shifter work in the technical solution
In low frequency, circuit power consumption is reduced；Have harmonic restraining function, and without LC network in piece, reduces chip area；2) technology
Scheme uses harmonics restraint edge coupler, realizes harmonics restraint while realizing edge coupling frequency multiplication, reduce oscillator and
The working frequency of phase shifter, to reduce power consumption；While inhibiting three times with quintuple harmonics component, it is not necessarily to the outer LC network of piece,
Reduce piece external component；3) technical solution belongs to no inductor design, can be applied not only to narrowband systems, to the nothing of each frequency range
Line communication system applications are provided with applicability, and providing for the harmonics restraint in wide-band communication system possible solution.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of harmonics restraint transmitter provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of phase shifter；
Fig. 3 is the structural schematic diagram of harmonics restraint edge coupler；
Fig. 4 is the operation principle schematic diagram of single edge coupler (by taking N=9 as an example)；
Fig. 5 is harmonics restraint edge coupler section operation principle schematic diagram.
Specific embodiment:
In order to deepen the understanding of the present invention, the present embodiment is described in detail with reference to the accompanying drawing.
Embodiment 1: as shown in Figure 1, a kind of harmonics restraint transmitter, the transmitter includes data modulator, annular vibration
Swing device, phase shifter, harmonics restraint edge coupler, power amplifier and antenna；
The data modulator is modulated the signal to be transmitted for receiving digital baseband signal to be launched,
Generate low frequency modulated signal；
The ring oscillator, the low frequency modulated signal for being provided according to the data modulator generate one group of road N
Equiphase interval low frequency signal；
The phase shifter generates second group and third for carrying out phase shift processing to first group of low frequency signal respectively
The group road N low frequency signal；Harmonics restraint edge coupler carries out edge coupling for low frequency signal respectively, exports N frequency multiplication rank
Terraced wave；
The power amplifier improves output power of transmitter for carrying out power amplification to the N frequency multiplication staircase waveform；
The antenna, for emitting the electromagnetic pulse signal of specific frequency；
The phase shifter includes phase coarse tuning circuit and phase fine tuning circuit；Wherein, the phase coarse tuning circuit, for real
The rough adjustment of existing phase；The phase fine tuning circuit, for realizing the accurate adjustment of phase；
Harmonics restraint edge coupler includes edge coupler 1, edge coupler 2 and edge coupler 3, for pair
First, second, and third group of low frequency signal carries out edge coupling respectively, exports N frequency multiplication staircase waveform, and ring oscillator is defeated
The phase difference of adjacent signals is (180+180/N) ° in the road N low frequency signal out；
The phase shifter to after the first group of road N low frequency signal difference phase shift (45/N) ° and (90/N) °, obtain second group and
The road third group N low frequency signal；
Harmonics restraint edge coupler has harmonic restraining function, can export N frequency multiplication staircase waveform, three times with five times
36.5dB and 34.3dB is respectively increased up to 47.1dBc and 48.3dBc, compared to square-wave signal in harmonics restraint degree；
The edge coupler 1, edge coupler 2 and edge coupler 3 are made of switch metal-oxide-semiconductor, each edge coupling
Clutch circuit includes the road N input signal, 1 tunnel output signal；
The ratio between the edge coupler 1, edge coupler 2 and mutual conductance of middle switch metal-oxide-semiconductor of edge coupler 3 are The input signal of the edge coupler 1, edge coupler 2 and edge coupler 3 is respectively first group, second group
With the road third group N low frequency signal；Its output end collects electric current, load sharing by parallel-connection structure.
Application Example: a kind of harmonics restraint transmitter, to simplify circuit, this specific embodiment is by taking N=9 as an example.
The structural schematic diagram of harmonics restraint transmitter provided in this embodiment is shown in Figure 1, comprising: data modulator,
Ring oscillator, phase shifter, harmonics restraint edge coupler, power amplifier and antenna；
Data modulator is modulated for receiving digital baseband signal to be launched, and to the signal to be transmitted, output
Low frequency modulated signal；
The ring oscillator, the low frequency modulated signal for being provided according to the data modulator export one group of 9 tunnel
Equiphase interval low frequency signal；
Harmonics restraint transmitter in the present embodiment, as local oscillator, generates the low of 9 tunnels using 9 grades of ring oscillators
Frequency signal is supplied to phase shifter as input signal, while this 9 road low frequency signal is also as in harmonics restraint edge coupler
The input signal of edge coupler 1.
In above-mentioned harmonics restraint transmitter, the phase of adjacent signals in 9 road low frequency signals of the ring oscillator output
Potential difference is 200 °.
The phase shifter, the 9 road low frequency signals for being provided according to the ring oscillator distinguish phase shift to 9 road signals
5 ° and 10 °, second group and third group N road low frequency signal is obtained, respectively as the input of edge coupler 2 and edge coupler 3
Signal.
It is illustrated in figure 2 the structural schematic diagram of the phase shifter in the present embodiment harmonics restraint transmitter, phase shifter includes phase
Position coarse tuning circuit and phase fine tuning circuit realize the rough adjustment and accurate adjustment of signal phase respectively.The harmonics restraint side
Structural schematic diagram along coupler is shown in Figure 3, and harmonics restraint edge coupler is by edge coupler 1,2 and of edge coupler
Edge coupler 3 forms；Their structure is identical, is made of switch metal-oxide-semiconductor, and the ratio between the mutual conductance of switch metal-oxide-semiconductor isEach edge coupler circuit includes the road N input signal, and 1 tunnel output signal, input signal is respectively first
Group, second group and the road third group N low frequency signal；Its output end collects electric current, load sharing by parallel-connection structure.Single edge coupling
Clutch may be implemented to synthesize the road N low frequency signal into N times of high frequency square wave output signal.The operation principle schematic diagram of edge coupler
Referring to fig. 4 (by taking N=9 as an example).The working principle of harmonics restraint edge coupler is referring to Fig. 5 (V in figureNIndicate harmonics restraint side
Along the output signal of coupler), VNIt is exported for high frequency staircase waveform, it is reachable with quintuple harmonics degree of suppression three times in signal spectrum
36.5dB and 34.3dB is respectively increased compared to square-wave signal in 47.1dBc and 48.3dBc.
By above-mentioned introduction it is found that the harmonics restraint transmitter of the present embodiment, using harmonics restraint edge coupler, in reality
Harmonics restraint is realized while existing edge coupling frequency multiplication, and the working frequency for reducing oscillator and phase shifter mentions to reduce power consumption
The performance of high emission machine；While inhibiting harmonic component, it is not necessarily to LC network, reduces circuit area, and makes circuit structure simple
It is single, be conducive to the circuit design and realization of harmonics restraint transmitter.The technical solution belongs to no inductor design, can not only apply
In narrowband systems, applicability is provided with to the wireless communication system application of each frequency range, is the harmonic wave suppression in wide-band communication system
System is provided and be possible solution.
It should be noted that above-described embodiment, is not intended to limit the scope of protection of the present invention, in above-mentioned technical proposal
On the basis of made equivalents or substitution each fall within the range that the claims in the present invention are protected.
Claims (9)
1. a kind of harmonics restraint transmitter, which is characterized in that the transmitter includes data modulator, ring oscillator, phase shift
Device, harmonics restraint edge coupler, power amplifier and antenna；
The data modulator is modulated the signal to be transmitted for receiving digital baseband signal to be launched, generates
Low frequency modulated signal；
The ring oscillator, the low frequency modulated signal for being provided according to the data modulator, one group of road N of generation (N >=
3, and N be odd number, similarly hereinafter) equiphase interval low frequency signal；
The phase shifter generates second group and third group N road for carrying out phase shift processing to first group of low frequency signal respectively
Low frequency signal；
Harmonics restraint edge coupler carries out edge coupling for low frequency signal respectively, exports N frequency multiplication staircase waveform；
The power amplifier improves output power of transmitter for carrying out power amplification to the N frequency multiplication staircase waveform；
The antenna, for emitting the electromagnetic pulse signal of specific frequency.
2. harmonics restraint transmitter according to claim 1, which is characterized in that the phase shifter includes phase coarse tuning circuit
With phase fine tuning circuit；Wherein, the phase coarse tuning circuit, for realizing the rough adjustment of phase；The phase fine tuning circuit,
For realizing the accurate adjustment of phase.
3. harmonics restraint transmitter according to claim 2, which is characterized in that harmonics restraint edge coupler includes
Edge coupler 1, edge coupler 2 and edge coupler 3, for first, second, and third group of low frequency signal point
Not carry out edge coupling, export N frequency multiplication staircase waveform.
4. harmonics restraint transmitter according to claim 2 or 3, which is characterized in that the road N of the ring oscillator output
The phase difference of adjacent signals is (180+180/N) ° in low frequency signal.
5. harmonics restraint transmitter according to claim 4, which is characterized in that the phase shifter is to the first group of road N low frequency
After signal distinguishes phase shift (45/N) ° and (90/N) °, second group and third group N road low frequency signal is obtained.
6. harmonics restraint transmitter according to claim 5, which is characterized in that harmonics restraint edge coupler has
Harmonic restraining function can export N frequency multiplication staircase waveform, three times with quintuple harmonics degree of suppression up to 47.1dBc and 48.3dBc, phase
36.5dB and 34.3dB is respectively increased than square-wave signal.
7. harmonics restraint transmitter according to claim 6, which is characterized in that the edge coupler 1, edge coupler
2 and edge coupler 3 by switch metal-oxide-semiconductor form, each edge coupler circuit include the road N input signal, 1 tunnel output believes
Number.
8. harmonics restraint transmitter according to claim 7, which is characterized in that the edge coupler 1, edge coupler
2 and the ratio between the mutual conductance of middle switch metal-oxide-semiconductor of edge coupler 3 be
9. harmonics restraint transmitter according to claim 8, which is characterized in that the edge coupler 1, edge coupler
2 and the input signal of edge coupler 3 be respectively first group, second group and third group N road low frequency signal；Its output end is by simultaneously
It is coupled structure and collects electric current, load sharing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435569.3A CN110212929B (en) | 2019-05-23 | 2019-05-23 | Harmonic suppression transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435569.3A CN110212929B (en) | 2019-05-23 | 2019-05-23 | Harmonic suppression transmitter |
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| CN110212929A true CN110212929A (en) | 2019-09-06 |
| CN110212929B CN110212929B (en) | 2021-03-09 |
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| CN201910435569.3A Active CN110212929B (en) | 2019-05-23 | 2019-05-23 | Harmonic suppression transmitter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111431554A (en) * | 2020-03-27 | 2020-07-17 | 深圳清华大学研究院 | Transmitter and wireless transceiver having the same |
| CN113315474A (en) * | 2021-05-26 | 2021-08-27 | 天津大学 | Harmonic suppression edge synthesis transmitter based on capacitive coupling |
| CN113346915A (en) * | 2021-05-26 | 2021-09-03 | 天津大学 | Non-inductive transmitter based on harmonic suppression edge synthesis |
| CN115085744A (en) * | 2021-03-12 | 2022-09-20 | 瑞昱半导体股份有限公司 | Emitter |
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| US10141921B2 (en) * | 2016-01-19 | 2018-11-27 | Mediatek Inc. | Signal generator using multi-sampling and edge combining and associated signal generating method |
| CN109787648A (en) * | 2019-01-29 | 2019-05-21 | 余芳 | A kind of ADC harmonic level reduction system and method based on digital phase shift synthesis |
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| CN111431554A (en) * | 2020-03-27 | 2020-07-17 | 深圳清华大学研究院 | Transmitter and wireless transceiver having the same |
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| CN113315474A (en) * | 2021-05-26 | 2021-08-27 | 天津大学 | Harmonic suppression edge synthesis transmitter based on capacitive coupling |
| CN113346915A (en) * | 2021-05-26 | 2021-09-03 | 天津大学 | Non-inductive transmitter based on harmonic suppression edge synthesis |
| CN113346915B (en) * | 2021-05-26 | 2022-10-21 | 天津大学 | Non-inductive transmitter based on harmonic suppression edge synthesis |
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| CN110212929B (en) | 2021-03-09 |
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