CN112468089B - Low-phase-noise compact and simplified frequency multiplier and frequency synthesis method - Google Patents
Low-phase-noise compact and simplified frequency multiplier and frequency synthesis method Download PDFInfo
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- CN112468089B CN112468089B CN202011244580.0A CN202011244580A CN112468089B CN 112468089 B CN112468089 B CN 112468089B CN 202011244580 A CN202011244580 A CN 202011244580A CN 112468089 B CN112468089 B CN 112468089B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
Abstract
One embodiment of the invention discloses a low-phase noise compact frequency multiplier and a frequency synthesis method, which comprise the following steps: the multi-layer mixed pressing plate comprises a multi-layer mixed pressing plate signal input surface, a multi-layer mixed pressing plate transition structure and a multi-layer mixed pressing plate signal output surface; wherein, include on the multilayer mixes the clamp plate signal input face: the first frequency doubling circuit, the first amplifier, the second frequency doubling circuit, the first filter, the second amplifier and the third frequency doubling circuit are connected with the input ends of the first frequency doubling circuit, the first amplifier, the second frequency doubling circuit, the first filter, the second amplifier and the third frequency doubling circuit; the signal output surface of the multilayer hybrid board comprises: the second filter and the third amplifier are connected, and the input end of the second filter and the input end of the third amplifier are connected; the input surface of the multilayer mixing and pressing plate, the transition structure of the multilayer mixing and pressing plate and the output surface of the multilayer mixing and pressing plate are sequentially connected in series. The frequency multiplication link of the invention occupies small space and realizes a compact octave multiplier.
Description
Technical Field
The invention relates to the field of frequency multipliers. And more particularly, to a low phase noise compact frequency multiplier and frequency synthesis method.
Background
The frequency multiplication technology is a technology frequently adopted by a direct frequency synthesizer, the conventional octave multiplier is realized by using a mode of high-order frequency multiplication and then filtering, and the indexes of low phase noise and low spurious can not be realized; or octave frequency with low phase noise and low stray is realized by adopting a frequency doubling and triple cascading mode, filtering is carried out after frequency doubling every time, a single shielding cavity is needed for frequency doubling and filtering every time, three filters and three shielding cavities are needed for triple frequency doubling, and a frequency doubling link is complex.
Disclosure of Invention
The invention aims to provide a low-phase-noise compact frequency multiplier and a frequency synthesis method, so as to solve at least one of the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a compact and simplified frequency multiplier with low phase noise, comprising:
the multi-layer mixed pressing plate comprises a multi-layer mixed pressing plate signal input surface, a multi-layer mixed pressing plate transition structure and a multi-layer mixed pressing plate signal output surface;
wherein, include on the multilayer mixes the clamp plate signal input face: the first frequency doubling circuit, the first amplifier, the second frequency doubling circuit, the first filter, the second amplifier and the third frequency doubling circuit are connected with the input ends of the first frequency doubling circuit, the first amplifier, the second frequency doubling circuit, the first filter, the second amplifier and the third frequency doubling circuit;
the signal output surface of the multilayer hybrid board comprises: the second filter and the third amplifier are connected, and the input end of the second filter and the input end of the third amplifier are connected;
the input surface of the multilayer mixing and pressing plate, the transition structure of the multilayer mixing and pressing plate and the output surface of the multilayer mixing and pressing plate are sequentially connected in series.
In one particular embodiment of the present invention,
the input end of the signal input surface of the multilayer mixed pressing plate is used for receiving an input signal fi, and the input signal fi passes through a first frequency doubling circuit and then outputs a signal f 1;
after the signal f1 is amplified by the first amplifier, the even-numbered harmonic of the signal f1 is output through a second frequency doubling circuit, and the frequency of the even-numbered harmonic of the signal f1 is selected by a first filter to obtain a frequency doubling signal f2 of the signal f 1;
the signal f2 is amplified by a second amplifier, and then the even harmonic of the signal f2 is output by a third frequency doubling circuit, the even harmonic of the signal f2 is transited to a signal output surface of the multilayer hybrid board through a multilayer hybrid board transition structure, and the even harmonic of the signal f2 is frequency-selected by a second filter to obtain a frequency doubling signal f3 of the signal f 2;
the f3 is amplified by a third amplifier and then outputs a required signal f0 from the output end of the output face of the multi-layer mixing plate.
In one particular embodiment of the present invention,
the signal f1 is an even harmonic signal of an input signal fi, wherein f1 is 2 nfi;
the f2 is 2f 1;
the f3 is 2f 2;
the f0 is 8 fi.
In one particular embodiment of the present invention,
n is a positive integer, and n is more than or equal to 1.
In a second aspect, the present invention also provides a method for frequency synthesis, comprising:
the input end of the signal input surface of the multilayer mixed pressing plate is used for receiving an input signal fi, and the input signal fi passes through a first frequency doubling circuit and then outputs a signal f 1; the signal f1 is an even harmonic signal of the input signal fi, wherein f1 is 2nfi, n is a positive integer, and n is greater than or equal to 1;
after the signal f1 is amplified by the first amplifier, the even-numbered harmonic of the signal f1 is output through a second frequency doubling circuit, and the frequency of the even-numbered harmonic of the signal f1 is selected by a first filter to obtain a frequency doubling signal f2 of the signal f 1; the f2 is 2f 1;
the signal f2 is amplified by a second amplifier, and then the even harmonic of the signal f2 is output by a third frequency doubling circuit, the even harmonic of the signal f2 is transited to a signal output surface of the multilayer hybrid board through a multilayer hybrid board transition structure, and the even harmonic of the signal f2 is frequency-selected by a second filter to obtain a frequency doubling signal f3 of the signal f 2; the f3 is 2f 2;
and the f3 is amplified by a third amplifier and then outputs a required signal f0 from the output end of the output face of the multi-layer mixing plate, wherein f0 is 8 fi.
The invention has the following beneficial effects:
the invention realizes the octave function of the input signal, minimizes the additional phase noise of the input signal, has small stray of the output signal, avoids a filter after the first frequency doubling, and avoids independently designing three shielding cavities for the third frequency doubling by utilizing the isolation function of the multilayer printed board. The frequency multiplication link occupies small space, and the compact octave multiplier is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 shows a schematic diagram of a low phase noise compact reduced frequency multiplier according to an embodiment of the invention.
Fig. 2 shows a flow diagram of a method of performing frequency synthesis according to one embodiment of the invention.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
First embodiment
As shown in fig. 1, an embodiment of the present invention discloses a compact and simplified frequency multiplier with low phase noise, which includes:
the multi-layer mixed compression plate comprises a multi-layer mixed compression plate signal input surface 9, a multi-layer mixed compression plate transition structure 10 and a multi-layer mixed compression plate signal output surface 11;
wherein, include on the multilayer mixes the clamp plate signal input face 9: the first frequency doubling circuit A1, the first amplifier A2, the second frequency doubling circuit B3, the first filter B4, the second amplifier B5 and the third frequency doubling circuit C6 are connected, and the input ends of the frequency doubling circuit A1, the amplifier A2, the frequency doubling circuit B3, the filter B4, the amplifier B5 and the frequency doubling circuit C6 are connected;
the signal output surface 11 of the multilayer mixed pressing plate comprises: a second filter C7 and a third amplifier C8, the filter C7 and the input end of the amplifier C8 are connected;
the input surface of the multilayer mixing and pressing plate, the transition structure 10 of the multilayer mixing and pressing plate and the output surface of the multilayer mixing and pressing plate are connected in series in sequence.
In one particular embodiment of the present invention,
the input end of the signal input surface 9 of the multilayer mixed pressing plate is used for receiving an input signal fi, and the input signal fi passes through a frequency doubling circuit A1 and then outputs a signal f 1;
the signal f1 is amplified by an amplifier A2, and then even harmonics of the signal f1 are output through a frequency doubling circuit B3, and after the even harmonics of the signal f1 are frequency-selected by a filter B4, a frequency doubling signal f2 of the signal f1 is obtained;
the signal f2 is amplified by an amplifier B5, and then the even harmonic of the signal f2 is output by a frequency doubling circuit C6, the even harmonic of the signal f2 is transited to the signal output surface 11 of the multilayer mixed pressing plate through the multilayer mixed pressing plate transition structure 10, and the even harmonic of the signal f2 is frequency-selected by a filter C7 to obtain a frequency doubling signal f3 of the signal f 2;
the f3 is amplified by an amplifier C8 and outputs a required signal f0 from the output end of the output surface of the multi-layer mixing plate.
In one particular embodiment of the present invention,
the signal f1 is an even harmonic signal of an input signal fi, wherein f1 is 2 nfi;
the f2 is 2f 1;
said f3 ═ 2f 2;
the f0 is 8 fi.
In one particular embodiment of the present invention,
n is a positive integer, and n is more than or equal to 1.
The invention realizes the octave function of the input signal, minimizes the additional phase noise of the input signal, has small stray of the output signal, avoids a filter after the first frequency doubling, and avoids independently designing three shielding cavities for the third frequency doubling by utilizing the isolation function of the multilayer printed board. The frequency multiplication link occupies small space, and the compact octave multiplier is realized.
Second embodiment
As shown in fig. 2, an embodiment of the present invention further discloses a method for performing frequency synthesis, including:
the input end of the signal input surface 9 of the multilayer mixed pressing plate is used for receiving an input signal fi, and the input signal fi passes through a frequency doubling circuit A1 and then outputs a signal f 1; the signal f1 is an even harmonic signal of the input signal fi, wherein f1 is 2nfi, n is a positive integer, and n is greater than or equal to 1;
the signal f1 is amplified by an amplifier A2, and then outputs even harmonics of the signal f1 through a frequency doubling circuit B3, and the even harmonics of the signal f1 are subjected to frequency selection by a filter B4 to obtain a frequency doubling signal f2 of the signal f 1; said f2 ═ 2f 1;
the signal f2 is amplified by an amplifier B5, and then the even harmonic of the signal f2 is output by a frequency doubling circuit C6, the even harmonic of the signal f2 is transited to the signal output surface 11 of the multilayer mixed pressing plate through the multilayer mixed pressing plate transition structure 10, and the even harmonic of the signal f2 is frequency-selected by a filter C7 to obtain a frequency doubling signal f3 of the signal f 2; the f3 is 2f 2;
and the f3 is amplified by an amplifier C8 and then outputs a required signal f0 from the output end of the output face of the multi-layer mixing plate, wherein f0 is 8 fi.
The invention realizes the octave function of the input signal, minimizes the additional phase noise of the input signal, has small stray of the output signal, avoids a filter after the first second frequency multiplication, and avoids independently designing three shielding cavities for the third second frequency multiplication by utilizing the isolation function of a multilayer printed board.
It should be understood that the above-described embodiments of the present invention are examples for clearly illustrating the invention, and are not to be construed as limiting the embodiments of the present invention, and it will be obvious to those skilled in the art that various changes and modifications can be made on the basis of the above description, and it is not intended to exhaust all embodiments, and obvious changes and modifications can be made on the basis of the technical solutions of the present invention.
Claims (5)
1. A low phase noise compact and reduced frequency multiplier, comprising:
the multi-layer mixed pressing plate comprises a multi-layer mixed pressing plate signal input surface, a multi-layer mixed pressing plate transition structure and a multi-layer mixed pressing plate signal output surface;
wherein, include on the multilayer mixes the clamp plate signal input face: the first frequency doubling circuit, the first amplifier, the second frequency doubling circuit, the first filter, the second amplifier and the third frequency doubling circuit are connected with the input ends of the first frequency doubling circuit, the first amplifier, the second frequency doubling circuit, the first filter, the second amplifier and the third frequency doubling circuit;
the signal output surface of the multilayer hybrid board comprises: the second filter and the third amplifier are connected, and the input end of the second filter and the input end of the third amplifier are connected;
the input surface of the multilayer mixing and pressing plate, the transition structure of the multilayer mixing and pressing plate and the output surface of the multilayer mixing and pressing plate are sequentially connected in series.
2. The frequency multiplier of claim 1,
the input end of the signal input surface of the multilayer mixed pressing plate is used for receiving an input signal fi, and the input signal fi passes through a first frequency doubling circuit and then outputs a signal f 1;
after the signal f1 is amplified by the first amplifier, the even-numbered harmonic of the signal f1 is output through a second frequency doubling circuit, and the frequency of the even-numbered harmonic of the signal f1 is selected by a first filter to obtain a frequency doubling signal f2 of the signal f 1;
the signal f2 is amplified by a second amplifier, and then the even harmonic of the signal f2 is output by a third frequency doubling circuit, the even harmonic of the signal f2 is transited to a signal output surface of the multilayer hybrid board through a multilayer hybrid board transition structure, and the even harmonic of the signal f2 is frequency-selected by a second filter to obtain a frequency doubling signal f3 of the signal f 2;
the f3 is amplified by a third amplifier and outputs a required signal f0 from the output end of the output face of the multilayer mixing plate.
3. The frequency multiplier of claim 2,
the signal f1 is an even harmonic signal of an input signal fi, wherein f1 is 2 nfi;
the f2 is 2f 1;
the f3 is 2f 2;
the f0 is 8 fi.
4. The frequency multiplier of claim 3,
n is a positive integer, and n is more than or equal to 1.
5. A method of frequency synthesis using the frequency multiplier of any of claims 1-4, comprising:
the input end of the signal input surface of the multilayer mixed pressing plate is used for receiving an input signal fi, and the input signal fi passes through a first frequency doubling circuit and then outputs a signal f 1; the signal f1 is an even harmonic signal of the input signal fi, wherein f1 is 2nfi, n is a positive integer, and n is greater than or equal to 1;
after the signal f1 is amplified by the first amplifier, the even-numbered harmonic of the signal f1 is output through a second frequency doubling circuit, and the frequency of the even-numbered harmonic of the signal f1 is selected by a first filter to obtain a frequency doubling signal f2 of the signal f 1; the f2 is 2f 1;
the signal f2 is amplified by a second amplifier, and then the even harmonic of the signal f2 is output by a third frequency doubling circuit, the even harmonic of the signal f2 is transited to a signal output surface of the multilayer hybrid board through a multilayer hybrid board transition structure, and the even harmonic of the signal f2 is frequency-selected by a second filter to obtain a frequency doubling signal f3 of the signal f 2; said f3 ═ 2f 2;
and the f3 is amplified by a third amplifier and then outputs a required signal f0 from the output end of the output face of the multi-layer mixing plate, wherein f0 is 8 fi.
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| CN208507906U (en) * | 2018-07-27 | 2019-02-15 | 武汉虹信通信技术有限责任公司 | A kind of micro-strip Waveguide conversion device and radio circuit |
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| KR100773560B1 (en) * | 2006-03-06 | 2007-11-05 | 삼성전자주식회사 | Method and apparatus for synthesizing stereo signal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312322A (en) * | 2013-05-16 | 2013-09-18 | 中国电子科技集团公司第四十一研究所 | Local oscillator circuit and local oscillation signal generation method |
| CN104682875A (en) * | 2013-11-27 | 2015-06-03 | 中国航空工业集团公司雷华电子技术研究所 | Method for effectively restraining generation of spurious broadband signals |
| CN104065381A (en) * | 2014-06-06 | 2014-09-24 | 中国电子科技集团公司第五十五研究所 | Frequency synthesizer for satellites and frequency synthesis method of frequency synthesizer |
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