CN103208978B - Broadband self adaptation harmonic elimination device based on image method - Google Patents
Broadband self adaptation harmonic elimination device based on image method Download PDFInfo
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- CN103208978B CN103208978B CN201210009110.5A CN201210009110A CN103208978B CN 103208978 B CN103208978 B CN 103208978B CN 201210009110 A CN201210009110 A CN 201210009110A CN 103208978 B CN103208978 B CN 103208978B
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Abstract
The present invention relates to a kind of broadband self adaptation harmonic elimination device based on image method, including the first power splitter (1), first variable delay line (2), main signal cancellation module (3), mirror image generation module (4) and the first combiner (5), the outfan of described the first power splitter (1) respectively with the input of the first variable delay line (2), the input of main signal cancellation module (3) connects, the outfan of described main signal cancellation module (3) is connected with the input of mirror image generation module (4), the input of described the first combiner (5) respectively with the outfan of the first variable delay line (2), the outfan of mirror image generation module (4) connects.Compared with prior art, the present invention have that self-adaptative adjustment, transplantability be good, cost and the advantage such as design difficulty is low.
Description
Technical field
The present invention relates to a kind of harmonic elimination device, especially relate to a kind of broadband self adaptation harmonic elimination device based on image method.
Background technology
Along with developing rapidly of radio communication, wide band transmitter and wide band receiver are applied to increasing occasion.For transmitter and receiver, harmonic wave is all an important index, in the design of transmitter and receiver, the most all makes great efforts the Harmonics elimination ability of raising system self, to promote the performance indications of self.
The most typically by two ways harmonic carcellation, the first is to adjust wave filter with harmonic carcellation by electrically tunable filter or switch filter matrix according to the frequency of main signal；The second is by selecting the device of preferable harmonic characterisitic or parts, relies on the performance of device or parts self to improve the elimination ability of harmonic wave.Both modes produce the following problem in actual use:
1) for using the method harmonic carcellation of filtering close to the signal of intermediate frequency, but it is relatively near to be because main signal frequency and harmonic wave, and for wave filter, design difficulty is big, as a consequence it is hardly possible to realize.
2) for high-frequency signal, electrically tunable filter or switch filtering matrix harmonic carcellation can be passed through, but along with the increase of main signal frequency, the complexity of design and cost all can significantly improve.
3) for using the nonlinear device or parts that harmonic characterisitic is good, because being limited by manufacturing process now and technology, the hardly possible realization of preferable index is reached in all band for broadband signal.
4) both modes all can be along with factors such as the increase of the time of use, external environment changes so that the device such as wave filter, amplifier or the characteristic variations of parts, harmonic characterisitic now can be caused to be deteriorated, can only change device or component index could recover normal.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and provide that a kind of self-adaptative adjustment, transplantability be good, cost and the low broadband self adaptation harmonic elimination device based on image method of design difficulty.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of broadband self adaptation harmonic elimination device based on image method, it is characterized in that, including the first power splitter, the first variable delay line, main signal cancellation module, mirror image generation module and the first combiner, the outfan of the first described power splitter is connected with input, the input of main signal cancellation module of the first variable delay line respectively, the outfan of described main signal cancellation module is connected with the input of mirror image generation module, and the input of the first described combiner is connected with outfan, the outfan of mirror image generation module of the first variable delay line respectively；
Main signal with harmonic wave is divided into the two paths of signals of constant amplitude homophase by the first described power splitter, one road signal is by eliminating main signal after main signal cancellation module, and enter the image signal of mirror image generation module generation harmonic wave, another road closes road harmonic carcellation with image signal at the first combiner after entering the first variable delay line, generates pure main signal.
Described main signal cancellation module includes the second power splitter, amplifier, adjustable attenuator, the second variable delay line, vector modulator and the second combiner, the outfan of the second described power splitter is connected with input, the input of the second variable delay line of amplifier respectively, the outfan of described amplifier is connected with the input of adjustable attenuator, the described outfan of the second variable delay line is connected with the input of vector modulator, and the input of the second described combiner is connected with the outfan of adjustable attenuator, the outfan of vector modulator respectively；
The wherein road signal separated by the first power splitter is divided into AB and the CD two paths of signals of constant amplitude homophase by the second described power splitter, the described AB road amplified device of signal adjusts amplitude by adjustable attenuator after amplifying, CD road signal is adjusted to equal with processing Hou AB road signal amplitude by the second described variable delay line and vector modulator, the signal that phase is 180 degree, the two paths of signals after being adjusted closes road generation at the second combiner and eliminates the harmonic signal of main signal.
Described mirror image generation module includes the 3rd power splitter, 90-degree phase shifter, quadrature modulator, the 3rd combiner and gain compensation amplifier, the outfan of the 3rd described power splitter is connected with the input of 90-degree phase shifter, the input of quadrature modulator respectively, the outfan of described 90-degree phase shifter is connected with the input of quadrature modulator, the outfan of described quadrature modulator and the input of the 3rd combiner connect, and the outfan of the 3rd described combiner is connected with the input of gain compensation amplifier；
The harmonic signal that main signal cancellation module generates is divided into the two paths of signals of constant amplitude homophase by the 3rd described power splitter, one road signal is I road signal, another road signal forms the Q road signal with I road signal in orthogonal through 90-degree phase shifter, I road and Q road two paths of signals adjust amplitude by quadrature modulator and synthesize image signal at the 3rd combiner, and described gain compensation amplifier carries out gain compensation to image signal.
Described quadrature modulator is by adjusting I road and the direct current input current on Q road, adjust I road and the amplitude of Q road two paths of signals in real time, and then adjusting the amplitude of image signal and phase place, image signal is equal with the harmonic signal amplitude after the first variable delay line, phase 180 degree.
The first described variable delay line and the second variable delay line are respectively used to adjust the first power splitter and the output of the second power splitter, compensate transmission delay.
Compared with prior art, the invention have the advantages that
1) for broadband signal, it is not necessary to special filter circuit, so that it may the Harmonics elimination of main signal；
2) low cost, portable good, applied widely；
3) change of the harmonic wave caused along with the change of transmitter or the use of receiver and external environment, the present invention can adjust by real-time software, it is not necessary to changes device or parts；
4) nonlinear device in transmitter or receiver or parts harmonic wave index request are reduced, will not be limited by device property, reduce design cost, reduce design difficulty simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the self adaptation harmonic elimination device of the present invention；
Fig. 2 is the structural representation of the main signal cancellation module of the present invention；
Fig. 3 is the structural representation of the mirror image generation module of the present invention.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, this device includes first power splitter the 1, first variable delay line 2, main signal cancellation module 3, mirror image generation module 4 and the first combiner 5, the outfan of the first power splitter 1 is connected with input, the input of main signal cancellation module 3 of the first variable delay line 2 respectively, the outfan of main signal cancellation module 3 is connected with the input of mirror image generation module 4, and the input of the first described combiner 5 is connected with outfan, the outfan of mirror image generation module 4 of the first variable delay line 2 respectively；
The operation principle of this device is as follows: the main signal with harmonic wave is divided into the two paths of signals of constant amplitude homophase by the first power splitter 1, one road signal is by eliminating main signal after main signal cancellation module 3, and enter mirror image generation module 4 and generate the image signal of harmonic wave, another road closes road harmonic carcellation with image signal at the first combiner 5 after entering the first variable delay line 2, generates pure main signal.Wherein the first variable delay line 2 is for adjusting the output of the first power splitter 1, compensates transmission delay.
As shown in Figure 2, main signal cancellation module 3 includes the second power splitter 31, amplifier 32, adjustable attenuator 33, second variable delay line 34, vector modulator 35 and the second combiner 36, wherein, the outfan of the second power splitter 31 respectively with the input of amplifier 32, the input of the second variable delay line 34 connects, the outfan of amplifier 32 is connected with the input of adjustable attenuator (33), the outfan of the second variable delay line 34 is connected with the input of vector modulator 35, the input of the second combiner 36 respectively with the outfan of adjustable attenuator 33, the outfan of vector modulator (35) connects；
The operation principle of this module is as follows: the wherein road signal separated by the first power splitter 1 is divided into AB and the CD two paths of signals of constant amplitude homophase by the second power splitter 31, wherein, AB road signal amplified device 32 adjusts amplitude by adjustable attenuator 33 after amplifying, CD road signal passes sequentially through the second variable delay line 34 and vector modulator 35 adjusts amplitude and phase place, adjust Hou CD road signal equal with processing Hou AB road signal amplitude, phase 180 degree, the two paths of signals after being adjusted closes road generation at the second combiner 36 and eliminates the harmonic signal of main signal.Wherein the second variable delay line 34 is for adjusting the output of the second power splitter 31, compensates transmission delay.
As shown in Figure 3, mirror image generation module 4 includes the 3rd power splitter 41,90-degree phase shifter 42, quadrature modulator the 43, the 3rd combiner 44 and gain compensation amplifier 45, wherein, the outfan of the 3rd power splitter 41 is connected with input, the input of quadrature modulator 43 of 90-degree phase shifter 42 respectively, the outfan of 90-degree phase shifter 42 is connected with the input of quadrature modulator 43, the outfan of quadrature modulator 43 and the input of the 3rd combiner 44 connect, and the outfan of the 3rd combiner 44 is connected with the input of gain compensation amplifier 45；
The operation principle of this module is as follows: the harmonic signal that main signal cancellation module generates is divided into the two paths of signals of constant amplitude homophase by the 3rd power splitter 41, one road signal is I road signal, another road signal forms the Q road signal with I road signal in orthogonal through 90-degree phase shifter 42, I road and Q road two paths of signals are adjusted amplitude by quadrature modulator 43 and are synthesized image signal at the 3rd combiner 44, finally by gain compensation amplifier 44, image signal is carried out gain compensation, wherein, image signal is equal with the harmonic signal amplitude after the first variable delay line 2, phase 180 degree.
Claims (4)
1. a broadband self adaptation harmonic elimination device based on image method, it is characterized in that, including the first power splitter (1), first variable delay line (2), main signal cancellation module (3), mirror image generation module (4) and the first combiner (5), the outfan of described the first power splitter (1) respectively with the input of the first variable delay line (2), the input of main signal cancellation module (3) connects, the outfan of described main signal cancellation module (3) is connected with the input of mirror image generation module (4), the input of described the first combiner (5) respectively with the outfan of the first variable delay line (2), the outfan of mirror image generation module (4) connects；
Main signal with harmonic wave is divided into the two paths of signals of constant amplitude homophase by described the first power splitter (1), one road signal eliminates main signal afterwards by main signal cancellation module (3), and enter the image signal of mirror image generation module (4) generation harmonic wave, another road enters the first variable delay line (2) and closes road harmonic carcellation with image signal at the first combiner (5) afterwards, generates pure main signal；
Described main signal cancellation module (3) includes the second power splitter (31), amplifier (32), adjustable attenuator (33), second variable delay line (34), vector modulator (35) and the second combiner (36), the outfan of described the second power splitter (31) respectively with the input of amplifier (32), the input of the second variable delay line (34) connects, the outfan of described amplifier (32) is connected with the input of adjustable attenuator (33), the outfan of described the second variable delay line (34) is connected with the input of vector modulator (35), the input of described the second combiner (36) respectively with the outfan of adjustable attenuator (33), the outfan of vector modulator (35) connects；
The wherein road signal that described the second power splitter (31) will be separated by the first power splitter (1) is divided into AB and the CD two paths of signals of constant amplitude homophase, the described amplified device of AB road signal (32) adjusts amplitude by adjustable attenuator (33) after amplifying, CD road signal is adjusted to equal with processing Hou AB road signal amplitude by described the second variable delay line (34) and vector modulator (35), the signal that phase is 180 degree, the two paths of signals after being adjusted closes road generation at the second combiner (36) and eliminates the harmonic signal of main signal.
nullA kind of broadband self adaptation harmonic elimination device based on image method the most according to claim 1，It is characterized in that，Described mirror image generation module (4) includes the 3rd power splitter (41)、90-degree phase shifter (42)、Quadrature modulator (43)、3rd combiner (44) and gain compensation amplifier (45)，The outfan of the 3rd described power splitter (41) respectively with the input of 90-degree phase shifter (42)、The input of quadrature modulator (43) connects，The outfan of described 90-degree phase shifter (42) is connected with the input of quadrature modulator (43)，The outfan of described quadrature modulator (43) and the input of the 3rd combiner (44) connect，The described outfan of the 3rd combiner (44) is connected with the input of gain compensation amplifier (45)；
The harmonic signal that main signal cancellation module generates is divided into the two paths of signals of constant amplitude homophase by the 3rd described power splitter (41), one road signal is I road signal, another road signal forms the Q road signal with I road signal in orthogonal through 90-degree phase shifter (42), I road and Q road two paths of signals adjust amplitude by quadrature modulator (43) and synthesize image signal at the 3rd combiner (44), and described gain compensation amplifier (44) carries out gain compensation to image signal.
A kind of broadband self adaptation harmonic elimination device based on image method the most according to claim 2, it is characterized in that, described quadrature modulator (43) is by adjusting I road and the direct current input current on Q road, adjust I road and the amplitude of Q road two paths of signals in real time, and then adjust amplitude and the phase place of image signal, image signal is equal with the harmonic signal amplitude after the first variable delay line (2), phase 180 degree.
A kind of broadband self adaptation harmonic elimination device based on image method the most according to claim 1, it is characterized in that, described the first variable delay line (2) and the second variable delay line (34) are respectively used to adjust the first power splitter (1) and the output of the second power splitter (31), compensate transmission delay.
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| CN201210009110.5A CN103208978B (en) | 2012-01-12 | 2012-01-12 | Broadband self adaptation harmonic elimination device based on image method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3145078B1 (en) | 2014-05-28 | 2018-09-19 | Huawei Technologies Co., Ltd. | Doherty power amplifier and transmitter |
| CN106533473B (en) * | 2016-12-21 | 2019-07-09 | 湖南纳雷科技有限公司 | A kind of radio frequency cancellation system and radio frequency for continuous wave radar offsets method |
| CN111064482B (en) * | 2018-10-16 | 2021-08-10 | 青岛海信移动通信技术股份有限公司 | Equipment and method for suppressing interference |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6073152A (en) * | 1998-04-03 | 2000-06-06 | Sarnoff Corporation | Method and apparatus for filtering signals using a gamma delay line based estimation of power spectrum |
| CN1430336A (en) * | 2001-12-29 | 2003-07-16 | Lg电子株式会社 | Receiver for suppressing image signal |
| CN1531215A (en) * | 2003-03-12 | 2004-09-22 | 联发科技股份有限公司 | Analog demodulator for low and medium frequency receiver |
| CN101777890A (en) * | 2009-12-23 | 2010-07-14 | 中国航天科技集团公司第五研究院第五一四研究所 | System and method for reducing harmonic noise of digital-synthesis sine waves |
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- 2012-01-12 CN CN201210009110.5A patent/CN103208978B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6073152A (en) * | 1998-04-03 | 2000-06-06 | Sarnoff Corporation | Method and apparatus for filtering signals using a gamma delay line based estimation of power spectrum |
| CN1430336A (en) * | 2001-12-29 | 2003-07-16 | Lg电子株式会社 | Receiver for suppressing image signal |
| CN1531215A (en) * | 2003-03-12 | 2004-09-22 | 联发科技股份有限公司 | Analog demodulator for low and medium frequency receiver |
| CN101777890A (en) * | 2009-12-23 | 2010-07-14 | 中国航天科技集团公司第五研究院第五一四研究所 | System and method for reducing harmonic noise of digital-synthesis sine waves |
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Address after: Block C, No. 7, Lane 205, Gaoji Road, Songjiang District, Shanghai, 201601 Patentee after: Chuangyuan Xinke (Shanghai) Technology Co.,Ltd. Address before: 201611 Shanghai Songjiang District Chedun town Xiangche Road No. 206 Patentee before: TRANSCOM INSTRUMENTS Co.,Ltd. |