CN103354442B - A kind of Multifunctional frequency multiplier - Google Patents
A kind of Multifunctional frequency multiplier Download PDFInfo
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- CN103354442B CN103354442B CN201310292031.4A CN201310292031A CN103354442B CN 103354442 B CN103354442 B CN 103354442B CN 201310292031 A CN201310292031 A CN 201310292031A CN 103354442 B CN103354442 B CN 103354442B
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Abstract
The invention discloses a kind of Multifunctional frequency multiplier, comprise input low pass filter, two series aiding connections Schottky diode to, export band pass filter, two sections of series connection quarter-wave open-circuit lines, high frequency choke circuit and first phase regulate transmission line, second phase to regulate transmission line and third phase to regulate transmission lines.Multifunctional frequency multiplier provided by the invention, circuit structure is simple, frequency multiplication is spuious little, can be used in miniaturization, the wideband frequency synthesizer of high integration or multimode transceivers.
Description
Technical field
The present invention relates to a kind of frequency multiplier being applied to microwave, millimeter wave frequency band, this frequency multiplier can realize secondary and the triductor of low spurious simultaneously, is particularly useful for the frequency source in communication or electronic countermeasures field.
Background technology
Frequency source is the heart of communication and radar system, and along with the eruptive growth of Modern Communication System data capacity, signal bandwidth is often up to several GHz; In addition, in order to realize the miniaturization of communication system, the transceiver of multiple frequency range is by integrated design.Such as, in electronic warfare system, the bandwidth of frequency synthesizer often covers certain or multiple radar frequency band, and applying in the frequency source system of electronic countermeasures of frequency multiplier is very extensive, sometimes often needs the secondary and three frequencys multiplication that realize certain reference frequency simultaneously.For another example, in multi-mode satellite communication system, if the transmitter (local oscillator is about 28GHz) of Ka frequency range and the transmitter (local oscillator is about 42GHz) of EHF wave band are integrated, by 14GHz media resonant oscillator is obtained respectively by secondary frequency multiplication and three frequencys multiplication.
Under normal circumstances, secondary frequency multiplication and three frequencys multiplication are realized by the frequency multiplier of two balanced types respectively, and this balanced type frequency multiplier has that shg efficiency is high, idle circuit is simple and the advantage that spurious reduction is high.Such as balanced type frequency tripler, utilize the architectural characteristic of circuit itself, can even-order harmonic be suppressed, thus the design of idle circuit can be simplified.But this frequency multiplier can only produce an available harmonic component (secondary or three times), to certain reference frequency source be carried out secondary or three frequencys multiplication simultaneously, often needs varactor doubler and the frequency tripler of two balanced types.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of structure simple and can produce the secondary of low spurious and the Multifunctional frequency multiplier of triple-frequency harmonics simultaneously.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
A kind of Multifunctional frequency multiplier, comprises low pass filter, high frequency choke circuit, band pass filter, first phase adjustment transmission line, second phase adjustment transmission line, third phase adjustment transmission line, the first Schottky diode, the second Schottky diode, the first open-circuit line and the second open-circuit line;
Described first Schottky diode and the second Schottky diode series aiding connection, remember that the common port of the first Schottky diode and the second Schottky diode is the plus earth of a contact, the second Schottky diode; Described first open-circuit line and the series connection of the second open-circuit line, remember that the common port of the first open-circuit line and the second open-circuit line is b contact;
The input of described low pass filter regulates transmission line to be connected with a contact as the input of this frequency multiplier, output by first phase;
The output of described band pass filter regulates transmission line to be connected with a contact as the frequency tripling output of this frequency multiplier, input by third phase;
The negative electrode of described first Schottky diode regulates one end of transmission line to be connected with b contact and second phase, described second phase regulates the two frequency multiplication outputs of the other end as this frequency multiplier of transmission line, and second phase regulates the other end of transmission line to be also connected with the output of high frequency choke circuit simultaneously.
Concrete, described low pass filter makes fundamental signal to pass through, and harmonic signal not by; Described band pass filter makes harmonic signal to pass through, and fundamental signal not by; The input signal wavelength of described first open-circuit line and the second open-circuit line is 1/4th of fundamental signal wavelength.
Concrete, described high frequency choke circuit only allows direct current signal to pass through, for the first Schottky diode and the second Schottky diode provide biased.
Low pass filter can pass through fundamental signal, and suppresses harmonic signal; Adjusting the first phase be connected with low pass filter regulates the length of transmission line and width can realize the impedance matching of input signal.
The negative electrode of the second Schottky diode is connected on two in fundamental signal frequency between quarter-wave first open-circuit line and the second open-circuit line, this makes the odd harmonic component equivalence ground connection had at the negative electrode place of the second Schottky diode, and even-order harmonic component equivalence open circuit; This circuit structure makes input signal constant amplitude be added to respectively in the same way on the first Schottky diode and the second Schottky diode.
At frequency tripling output, because a few order harmonic components constant amplitudes of the non-linear generation of diode superpose output in the same way, and even-order harmonic component constant amplitude oppositely superposes counteracting, therefore good even-order harmonic component rejection just can be obtained at frequency tripling output without the need to filter; Exporting band pass filter allows triple-frequency harmonics to pass through, and the fundametal compoment that power magnitude is larger is then launched back the first Schottky diode and the second Schottky diode, is again used.The length of transmission line and width is regulated to realize three frequency multiplication output impedance coupling by adjustment third phase.
At the negative electrode place of the first Schottky diode, even harmonics signal can export, and exports after second phase regulates transmission line to carry out impedance matching.
In order to improve the shg efficiency of frequency multiplier further, the branch road that two frequencys multiplication export adds DC bias circuit, adjustment bias voltage just can optimize the shg efficiency of frequency multiplier.
Beneficial effect: Multifunctional frequency multiplier provided by the invention, circuit structure is simple, frequency multiplication is spuious little, can be used in miniaturization, the wideband frequency synthesizer of high integration or multimode transceivers.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the simulation result of two frequency multiplication outputs;
Fig. 3 is the simulation result of frequency tripling output.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Be illustrated in figure 1 a kind of Multifunctional frequency multiplier, comprise low pass filter 1, high frequency choke circuit 8, band pass filter 10, first phase adjustment transmission line 2, second phase adjustment transmission line 7, third phase adjustment transmission line 9, first Schottky diode 3, second Schottky diode 4, first open-circuit line 5 and the second open-circuit line 6.
Described first Schottky diode 3 and the second Schottky diode 4 series aiding connection, remembers that the common port of the first Schottky diode 3 and the second Schottky diode 4 is a contact, the plus earth of the second Schottky diode 4; Described first open-circuit line 5 and the second open-circuit line 6 are connected, and remember that the common port of the first open-circuit line 5 and the second open-circuit line 6 is b contact.
The input of described low pass filter 1 regulates transmission line 2 to be connected with a contact as the input of this frequency multiplier, output by first phase.
The output of described band pass filter 10 regulates transmission line 9 to be connected with a contact as the frequency tripling output of this frequency multiplier, input by third phase.
The negative electrode of described first Schottky diode 3 regulates one end of transmission line 7 to be connected with b contact and second phase, described second phase regulates the two frequency multiplication outputs of the other end as this frequency multiplier of transmission line 7, and second phase regulates the other end of transmission line 7 to be also connected with the output of high frequency choke circuit 8 simultaneously.
Described low pass filter 1 makes fundamental signal to pass through, and harmonic signal not by; Described band pass filter 10 makes harmonic signal to pass through, and fundamental signal not by; The input signal wavelength of described first open-circuit line 5 and the second open-circuit line 6 is 1/4th of fundamental signal wavelength.
8, described high frequency choke circuit allows direct current signal to pass through, for the first Schottky diode 3 and the second Schottky diode 4 provide biased.
Described input low pass filter 1 by Frequency Design at f
0with 3f
0between, can by the fundamental signal frequency f of input
0, and suppress harmonic signal frequency 3f
0, the harmonic signal prevented feeds back to input.
The length of described first open-circuit line 5 and the second open-circuit line 6 is at fundamental frequency f
0on quarter-wave, thus f in the odd-multiple being formed in fundamental frequency at the negative electrode place of described first Schottky diode 3
0, 3f
0, 5f
0... equivalent ground connection, and on the even-multiple of fundamental frequency 2f
0, 4f
0, 6f
0... equivalence open circuit.
Described first Schottky diode 3 and the second Schottky diode 4 series aiding connection, forms Schottky series diode pair, the plus earth of the second Schottky diode 4, negative electrode equivalent ground connection in the odd harmonic of incoming frequency of the first Schottky diode 3.This structure makes to superpose in the same way in the odd harmonic constant amplitude of frequency tripling output, and even-order harmonic constant amplitude oppositely superposes, thus makes only there is odd harmonic at frequency tripling output; Oppositely superpose in two frequency multiplication output odd harmonic constant amplitudes, and only there is even-order harmonic.
Described band pass filter 10 is positioned at frequency tripling output channel, is used for selecting triple-frequency harmonics, and fundamental signal is reflected back Schottky series diode pair, again participates in frequency multiplication.
Although second harmonic output port exists multiple even-order harmonic, because second harmonic is significantly greater than other even-order harmonics, therefore do not need to select second harmonic by band pass filter.
Described first phase regulates transmission line 2, second phase to regulate transmission line 7 and third phase to regulate transmission line 9 to be used for realizing input and the output matching of frequency multiplier, improves the shg efficiency of frequency multiplier.
In order to verify validity of the present invention, we emulate this frequency multiplier circuit at the ADS software of Agilent company, during emulation, hypothesis input fundamental frequency is 5GHz, fundamental signal power is 13dBm, simulation result is (wherein abscissa is output frequency, and ordinate is power output) as shown in Figures 2 and 3.
Fig. 2 gives the harmonic component of secondary frequency multiplication output port, and as can be seen from the figure, the performance number of second harmonic component is apparently higher than first-harmonic and triple-frequency harmonics performance number.
Fig. 3 gives the harmonic component of three frequency multiplication output ports, and as can be seen from the figure, the performance number of third-harmonic component is apparently higher than the performance number of even-order harmonic component.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. a Multifunctional frequency multiplier, is characterized in that: comprise low pass filter (1), high frequency choke circuit (8), band pass filter (10), first phase adjustment transmission line (2), second phase adjustment transmission line (7), third phase adjustment transmission line (9), the first Schottky diode (3), the second Schottky diode (4), the first open-circuit line (5) and the second open-circuit line (6);
Described first Schottky diode (3) and the second Schottky diode (4) series aiding connection, remember that the common port of the first Schottky diode (3) and the second Schottky diode (4) is a contact, the plus earth of the second Schottky diode (4); Described first open-circuit line (5) and the second open-circuit line (6) series connection, remember that the common port of the first open-circuit line (5) and the second open-circuit line (6) is b contact;
The input of described low pass filter (1) regulates transmission line (2) to be connected with a contact as the input of this frequency multiplier, output by first phase;
The output of described band pass filter (10) regulates transmission line (9) to be connected with a contact as the frequency tripling output of this frequency multiplier, input by third phase;
Negative electrode and b contact and the second phase of described first Schottky diode (3) regulate one end of transmission line (7) to be connected, described second phase regulates the two frequency multiplication outputs of the other end as this frequency multiplier of transmission line (7), and second phase regulates the other end of transmission line (7) to be also connected with the output of high frequency choke circuit (8) simultaneously.
2. Multifunctional frequency multiplier according to claim 1, is characterized in that: described low pass filter (1) makes fundamental signal to pass through, and harmonic signal not by; Described band pass filter (10) makes harmonic signal to pass through, and fundamental signal not by; The input signal wavelength of described first open-circuit line (5) and the second open-circuit line (6) is 1/4th of fundamental signal wavelength.
3. Multifunctional frequency multiplier according to claim 1, is characterized in that: described high frequency choke circuit (8) only allows direct current signal to pass through, and is that the first Schottky diode (3) and the second Schottky diode (4) provide biased.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310292031.4A CN103354442B (en) | 2013-07-11 | 2013-07-11 | A kind of Multifunctional frequency multiplier |
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| CN201310292031.4A CN103354442B (en) | 2013-07-11 | 2013-07-11 | A kind of Multifunctional frequency multiplier |
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| CN103354442A CN103354442A (en) | 2013-10-16 |
| CN103354442B true CN103354442B (en) | 2015-12-23 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048965A (en) * | 2015-09-08 | 2015-11-11 | 电子科技大学 | Millimeter-wave dual-band frequency doubler based on Schottky diode pairs |
| CN109150110B (en) * | 2018-07-26 | 2021-12-07 | 东南大学 | Planar structure balanced frequency doubler |
| CN109245726B (en) * | 2018-08-28 | 2022-03-08 | 东南大学 | Double-push frequency multiplier suitable for extremely high frequency |
| CN109639240A (en) * | 2018-12-20 | 2019-04-16 | 电子科技大学 | Terahertz frequency multiplier based on artificial surface phasmon |
| CN110855245A (en) * | 2019-11-13 | 2020-02-28 | 电子科技大学 | Millimeter wave/terahertz power frequency doubling circuit |
| CN113098398B (en) * | 2021-04-14 | 2022-03-18 | 中国电子科技集团公司第三十八研究所 | Terahertz D-band planar frequency doubler |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1457559A (en) * | 2001-02-23 | 2003-11-19 | 皇家菲利浦电子有限公司 | Transceiver with frequency multiplier tracked to frequency generator |
| CN101931367A (en) * | 2010-10-12 | 2010-12-29 | 西安天伟电子系统工程有限公司 | 100MHz frequency tripler based on N-P-N triode |
| CN102270964A (en) * | 2010-02-19 | 2011-12-07 | 赫梯特微波公司 | Frequency multiplier |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6480045B2 (en) * | 2001-01-05 | 2002-11-12 | Thomson Licensing S.A. | Digital frequency multiplier |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1457559A (en) * | 2001-02-23 | 2003-11-19 | 皇家菲利浦电子有限公司 | Transceiver with frequency multiplier tracked to frequency generator |
| CN102270964A (en) * | 2010-02-19 | 2011-12-07 | 赫梯特微波公司 | Frequency multiplier |
| CN101931367A (en) * | 2010-10-12 | 2010-12-29 | 西安天伟电子系统工程有限公司 | 100MHz frequency tripler based on N-P-N triode |
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