CN1444309A - Micrometer wave and milimeter wave guartic harmonic mixer - Google Patents
Micrometer wave and milimeter wave guartic harmonic mixer Download PDFInfo
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- CN1444309A CN1444309A CN 02107141 CN02107141A CN1444309A CN 1444309 A CN1444309 A CN 1444309A CN 02107141 CN02107141 CN 02107141 CN 02107141 A CN02107141 A CN 02107141A CN 1444309 A CN1444309 A CN 1444309A
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Abstract
A microwave and millimetric wave quartic frequency mixer is composed of a stopping direct coupler, two stage microstrip oper wires, a schottky reverse diode pair, two stage compact microphand resonance units, two microband high-low impedance line low pass filter. Since the used local frequency is 1/4 of the basic wave frequency mixer, its performance is increased greatly, and the compact microband resonance unit can either transfer the local signal and provide RF signal circuit or flexible adjust the idle terminal reactivity load, so as to suppress the idle frequency to reduce frequency conversion loss.
Description
Technical field
The present invention relates to the frequency mixer that a kind of microwave and millimeter wave are used, the four-time harmonic frequency mixer that especially a kind of microwave and millimeter wave are used.
Background technology
Because the conversion loss of the four-time harmonic frequency mixer of prior art is too high, so present most microwave and millimeter wave receive, the frequency mixer in the transmitter also is to use the fundamental wave mixing device.A.Madjar is at IEEE Trans.Microwave Theory Tech., vol.MTT-44, no.11, pp.1997-2000, Nov.1996. " A novel general approach for theoptimum design of microwave and millimeter wave subharmonicmixers " by name document in thus a kind of theory that ideler frequency reduces conversion loss that suppresses has been proposed, and in design example, provided the result of a second harmonic mixing, but provide the method that does not obtain the generality design with plain mode.
The present inventor is at IEEE Microwave and Guided Wave Letters, vol.10, no.10, pp.403-405, Oct.2000. the document of " Novel 1-D microstrip PBGcells " by name reaches at IEEE Microwave and Wireless Components Letters, vol.11, no.5, in the document of May 2001. " A novel oscillator incorporatinga compact microstrip re sonant cell " by name a kind of new compact micro-band resonance unit was proposed, it has little size and can be used in the circuit neatly as accurate integrated package, but does not also propose how it to be used in the harmonic mixer of microwave in the document.
No matter owing to be to adopt the four-time harmonic frequency mixer of prior art or adopt the first-harmonic mixer, manufacturing cost and use cost are all very high, so under the situation increasingly extensive in the microwave current communication, that power improves constantly, the frequency mixer of prior art has not met user's the requirement that reduces cost.
Summary of the invention
The technical problem to be solved in the present invention provides that a kind of microwave and millimeter wave use, and uses the four-time harmonic frequency mixer of above-mentioned compact micro-band resonance unit, to replace the four-time harmonic frequency mixer and the fundamental wave mixing device of prior art, realizes low conversion loss and low cost.
In order to reach purpose of the present invention, frequency mixer of the present invention based on microstrip transmission line and Schottky backward diode to, add that two sections little band open-circuit lines and two sections compact micro-band resonance units form.Two compact micro-band resonance units that are operated in different frequency respectively are combined on the one hand can transmit local oscillation signal, the radiofrequency signal loop is provided, and can adjust the circuit to the terminal reactive load of ideler frequency on the other hand again flexibly.
By above-mentioned design, can suppress ideler frequency to greatest extent, reduce conversion loss, consequently make minimum conversion loss be low to moderate 7dB, reach and surpass the performance of general fundamental wave mixing device.
In addition, because the local frequency of frequency mixer of the present invention has only 1/4th of fundamental wave mixing device, thereby the performance of local oscillator is improved greatly, cost reduces greatly.Therefore can be used in whole microwave and millimeter wave frequency band, for example the helicopter CAS of whole city's subregion covering system of 28-32GHz (Local MultipointDistribution Services), 35-94GHz etc.
Description of drawings
Fig. 1 is the structure chart of the used compact micro-band resonance unit of four-time harmonic mixer of the present invention;
Fig. 2 is the typical transmission performance plot of the used compact micro-band resonance unit of four-time harmonic mixer of the present invention;
Fig. 3 is the structure chart of four-time harmonic frequency mixer of the present invention;
Fig. 4 is the conversion loss figure of four-time harmonic frequency mixer of the present invention when 35GHz.
Embodiment
Fig. 1 is the structure chart of the used compact micro-band resonance unit of four-time harmonic frequency mixer of the present invention.
Fig. 2 is the typical transmission performance plot of the used compact micro-band resonance unit of four-time harmonic mixer of the present invention.From scheming as seen, the compact micro-band resonance unit of variant frequency has different characteristic curves.The present invention utilizes these characteristics exactly, thereby has had a mind to select for use the compact micro-band resonance unit of two different qualities curves to realize the present invention to finish different separately tasks.
Fig. 3 is the structure chart of four-time harmonic frequency mixer of the present invention.In the present embodiment, radiofrequency signal (f
RF) right every straight coupler feed-in Schottky backward diode from the rf inputs warp of left end.Local oscillation signal (f
LO) from the local oscillator input of right-hand member through second compact micro-band resonance unit (CMRC-2) and first this diode pair of compact micro-band resonance unit (CMRC-1) feed-in.Local oscillation signal (f
LO) approximately be radiofrequency signal (f
RF) 1/4th.The left end of diode pair has two respectively with respect to local oscillation signal quarter-wave (λ
LO/ 4) and two minutes one wavelength (λ of radiofrequency signal
RF/ 2) open-circuit line.These two open-circuit lines are respectively to local oscillation signal (f
LO) and ideler frequency (f
RF-2f
LO) be shorted to ground, form local oscillation signal loop and ideler frequency short circuit termination, and to not influence of radiofrequency signal.The compact micro-band resonance unit (CMRC-1) that is positioned at diode pair the right is chosen to have at radio frequency (f
RF) and ideler frequency (f
RF+ 2f
LO) on be band resistance characteristic, but can pass through local oscillation signal (f
LO) and ideler frequency (f
RF-2f
LO).Adjust the distance (L between diode pair and the CMRC-1
1) can obtain radiofrequency signal (f
RF) at the grounded circuit on diode pair the right, form ideler frequency (f simultaneously
RF+ 2f
LO) reactive load, thereby suppress it.CMRC-2 is chosen to ideler frequency (f
RF-2f
LO) the tool stopband characteristic, but can pass through local oscillation signal.Adjust the distance (L between CMRC-2 and the CMRC-1
0) can make the total distance (L between CMRC-2 and the diode pair
2) to ideler frequency (f
RF-2f
LO) the maximum reactance that suppresses of formation.The right and left of diode pair also has two littlely to be with high low-impedance line low pass filter respectively, and the ground connection on the right provides the intermediate frequency loop, the left side be connected to the medium frequency output end head so that intermediate frequency output to be provided.Because the CMRC structure can suppress ideler frequency to greatest extent by adjusting the reactive load of ideler frequency, therefore four-time harmonic frequency mixer of the present invention can obtain than the low conversion loss of various prior art frequency mixers.
Fig. 4 is the conversion loss figure of four-time harmonic frequency mixer when 35GHz that the present invention uses the compact micro-band resonance unit.Shown that the conversion loss on the 35GHz frequency is 7dB, its+/-conversion loss in the bandwidth of 6GHZ is lower than 10dB.
Claims (3)
1, a kind of microwave and millimeter wave four-time harmonic frequency mixer is characterized in that comprising:
A Schottky backward diode is right;
One every straight coupler, the radio frequency of input every straight this diode pair of coupling feed-in;
Two sections little band open-circuit lines, what be positioned at this diode pair should be every straight coupling feed side, and length long and 1/4th local oscillator wavelength of 1/2nd rf waves of respectively doing for oneself form the loop that is shorted to ground to local oscillation signal, ideler frequency is formed short circuit termination, radiofrequency signal is not then had influence;
Two sections compact micro-band resonance units, be serially connected in the other end of diode pair, near one of this diode pair to radio frequency and ideler frequency tool band resistance characteristic, but can be by local oscillation signal and ideler frequency, to ideler frequency tool stopband characteristic, but can pass through local oscillation signal away from of this diode pair; And
Two little is with high low-impedance line low pass filter, lay respectively at the both sides of this diode pair, connect one of compact micro-band resonance unit and littlely be with high low-impedance line low pass filter ground connection, connect that another of two sections little band open-circuit lines is little is with high low-impedance line low pass filter to be connected to the medium frequency output end head so that the intermediate frequency loop to be provided.
2, microwave described in claim 1 and millimeter wave four-time harmonic frequency mixer, it is characterized in that: adjust this diode pair and and its close compact micro-band resonance unit between distance can obtain the grounded circuit of radiofrequency signal on this diode pair the right, form the reactive load that can suppress ideler frequency simultaneously.
3, microwave described in claim 1 and millimeter wave four-time harmonic frequency mixer is characterized in that: the distance of adjusting between the two compact micro-band resonance units can make compact micro-band resonance unit and the total distance between the diode pair away from diode pair that ideler frequency is formed maximum inhibition reactance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02107141 CN1234205C (en) | 2002-03-11 | 2002-03-11 | Micrometer wave and milimeter wave guartic harmonic mixer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02107141 CN1234205C (en) | 2002-03-11 | 2002-03-11 | Micrometer wave and milimeter wave guartic harmonic mixer |
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| Publication Number | Publication Date |
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| CN1444309A true CN1444309A (en) | 2003-09-24 |
| CN1234205C CN1234205C (en) | 2005-12-28 |
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|---|---|---|---|
| CN 02107141 Expired - Fee Related CN1234205C (en) | 2002-03-11 | 2002-03-11 | Micrometer wave and milimeter wave guartic harmonic mixer |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611390A (en) * | 2012-03-12 | 2012-07-25 | 东南大学 | W-band even-order sub-harmonic mixer |
| CN103560754A (en) * | 2013-11-18 | 2014-02-05 | 上海无线电设备研究所 | Compact microstrip resonant cell structure based high-linearity Doherty power amplifier |
| CN104218895A (en) * | 2014-09-01 | 2014-12-17 | 中国电子科技集团公司第五十五研究所 | High-order harmonic mixer |
| CN104617882A (en) * | 2014-12-08 | 2015-05-13 | 北京邮电大学 | Five-port passive mixer |
| CN105141260A (en) * | 2015-08-20 | 2015-12-09 | 电子科技大学 | 420GHz 10th harmonic frequency mixer |
| CN105932968A (en) * | 2016-06-23 | 2016-09-07 | 深圳市华讯方舟卫星通信有限公司 | Subharmonic mixer and Ka band low noise block |
| CN104158495B (en) * | 2014-08-13 | 2017-02-01 | 中国电子科技集团公司第十三研究所 | Novel hybrid integrated circuit for terahertz mixer |
| CN107888149A (en) * | 2017-11-28 | 2018-04-06 | 上海无线电设备研究所 | A kind of harmonic mixing frequency multiplier circuit |
-
2002
- 2002-03-11 CN CN 02107141 patent/CN1234205C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611390A (en) * | 2012-03-12 | 2012-07-25 | 东南大学 | W-band even-order sub-harmonic mixer |
| CN103560754A (en) * | 2013-11-18 | 2014-02-05 | 上海无线电设备研究所 | Compact microstrip resonant cell structure based high-linearity Doherty power amplifier |
| CN104158495B (en) * | 2014-08-13 | 2017-02-01 | 中国电子科技集团公司第十三研究所 | Novel hybrid integrated circuit for terahertz mixer |
| CN104218895A (en) * | 2014-09-01 | 2014-12-17 | 中国电子科技集团公司第五十五研究所 | High-order harmonic mixer |
| CN104218895B (en) * | 2014-09-01 | 2018-06-12 | 中国电子科技集团公司第五十五研究所 | harmonic mixer |
| CN104617882A (en) * | 2014-12-08 | 2015-05-13 | 北京邮电大学 | Five-port passive mixer |
| CN104617882B (en) * | 2014-12-08 | 2018-07-03 | 北京邮电大学 | A kind of five port passive frequency mixers |
| CN105141260A (en) * | 2015-08-20 | 2015-12-09 | 电子科技大学 | 420GHz 10th harmonic frequency mixer |
| CN105932968A (en) * | 2016-06-23 | 2016-09-07 | 深圳市华讯方舟卫星通信有限公司 | Subharmonic mixer and Ka band low noise block |
| CN105932968B (en) * | 2016-06-23 | 2019-01-25 | 深圳市华讯方舟卫星通信有限公司 | A kind of th harmonic mixer and Ka wave band tuner |
| CN107888149A (en) * | 2017-11-28 | 2018-04-06 | 上海无线电设备研究所 | A kind of harmonic mixing frequency multiplier circuit |
| CN107888149B (en) * | 2017-11-28 | 2021-11-02 | 上海无线电设备研究所 | Harmonic mixing frequency multiplier circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1234205C (en) | 2005-12-28 |
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