CN105932968B - A kind of th harmonic mixer and Ka wave band tuner - Google Patents
A kind of th harmonic mixer and Ka wave band tuner Download PDFInfo
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- CN105932968B CN105932968B CN201610460502.1A CN201610460502A CN105932968B CN 105932968 B CN105932968 B CN 105932968B CN 201610460502 A CN201610460502 A CN 201610460502A CN 105932968 B CN105932968 B CN 105932968B
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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
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Abstract
The present invention is suitable for Ka band communication field, a kind of th harmonic mixer and Ka wave band tuner are provided, the th harmonic mixer, including local oscillation signal filter module, high-frequency signal filter module, subharmonic frequency mixing module and intermediate-freuqncy signal filter module, subharmonic frequency mixing module includes the Schottky diode pair of reverse parallel connection；Subharmonic frequency mixing module is mixed to obtain intermediate-freuqncy signal to the filtered local oscillation signal of local oscillation signal filter module and the filtered high-frequency signal of high-frequency signal filter module, and intermediate-freuqncy signal filter module exports after being filtered to intermediate-freuqncy signal.The mixed frequency characteristic that the present invention passes through the even-order harmonic of the Schottky diode using reverse parallel connection, high-frequency signal and local oscillation signal are mixed to obtain intermediate-freuqncy signal, to realize the second harmonic mixing function of th harmonic mixer, the manufacturing cost of th harmonic mixer can be substantially reduced while obtaining preferable mixing function.
Description
Technical field
The invention belongs to Ka band communication field more particularly to a kind of th harmonic mixer and Ka wave band tuners.
Background technique
Ka wave band millimeter wave is in satellite communication field using more and more extensive, and Ka wave band tuner is as millimeter wave transceiving
The important component of machine is to realize the Primary Component of satellite communication, and the th harmonic mixer in Ka wave tuner is to influence transmitting
One of important devices of link performance.
However, the existing th harmonic mixer chip for being capable of handling Ka band signal generallys use GaAs (GaAs) work
Skill is made, although it is such can simplified design structure, enhance the reliability of circuit simultaneously, Costco Wholesale is higher, is unsuitable for
It is widely used to promote.
Summary of the invention
The purpose of the present invention is to provide a kind of th harmonic mixer and Ka wave band tuners, it is intended to solve it is existing can
The th harmonic mixer chip of processing Ka band signal generallys use GaAs (GaAs) technique and is made, although such can simplify
Design structure, the reliability for enhancing circuit simultaneously, but Costco Wholesale is higher, is unsuitable for the problem of being widely used to promote.
The invention is realized in this way a kind of th harmonic mixer, including the filtering of local oscillation signal filter module, high-frequency signal
Module, subharmonic frequency mixing module and intermediate-freuqncy signal filter module, the subharmonic frequency mixing module include the Schottky of reverse parallel connection
Diode pair, the Schottky diode is to including diode D1 and diode D2, wherein the anode and diode of diode D1
The cathode of D2 connects the input/output terminal for constituting the subharmonic frequency mixing module, the cathode of diode D1 and the anode of diode D2 altogether
The input terminal for constituting the subharmonic frequency mixing module is connect altogether；
The input terminal of the local oscillation signal filter module accesses local oscillation signal, the input terminal of the high-frequency signal filter module
The input terminal of the output termination subharmonic frequency mixing module of high-frequency signal, the high-frequency signal filter module is accessed, it is described secondary
The output end and the intermediate-freuqncy signal filter module of the input/output terminal of harmonic mixing module and the local oscillation signal filter module
Input terminal connect altogether, the output end of the intermediate-freuqncy signal filter module exports intermediate-freuqncy signal；
Output is mixed mould to the subharmonic after the local oscillation signal filter module is filtered the local oscillation signal of access
Block, output is to the subharmonic frequency mixing module, institute after the high-frequency signal filter module is filtered the high-frequency signal of access
It states subharmonic frequency mixing module and is mixed to obtain intermediate-freuqncy signal and defeated to filtered local oscillation signal and filtered high-frequency signal
Out to the intermediate-freuqncy signal filter module, the intermediate-freuqncy signal filter module exports after being filtered to the intermediate-freuqncy signal.
Preferably, the local oscillation signal filter module is Coupled Miccrostrip Lines bandpass filter.
Preferably, the microstrip line construction of the local oscillation signal filter module is M rank parallel coupling microstrip structure, the M rank
Parallel coupling microstrip structure includes the M+1 microstrip line arranged in parallel along each microstrip line length direction；
The M+1 microstrip line is equidistant or unequal spacing is distributed, when M+1 microstrip line unequal spacing distribution,
Successively decrease on the basis of spacing of the spacing between intermediate two microstrip lines between adjacent microstrip line to two sides；
The width of the M+1 microstrip line is equal and the length of each microstrip line according to the distribution sequence of microstrip line with intermediate m
Successively decrease on the basis of the length of microstrip line to two sides, as m > 1, the equal length of the intermediate m microstrip line, wherein M and m
It is the positive integer greater than 0.
Preferably, the microstrip line construction of the local oscillation signal filter module be two rank parallel coupling microstrip structures, described
The frequency range of the local oscillation signal of vibration signal filter module access is 9.03GHz~9.22GHz, micro- through the two ranks parallel coupling
The centre frequency of the local oscillation signal exported after band structure filtering is~9.125GHz.
Preferably, the th harmonic mixer further includes the low noise connecting with the input terminal of the local oscillation signal filter module
Acoustic amplifier, local oscillation signal are exported again later via low-noise amplifier amplification and are carried out to the local oscillation signal filter module
Filtering.
Preferably, the high-frequency signal filter module is Coupled Miccrostrip Lines bandpass filter.
Preferably, the microstrip line construction of the high-frequency signal filter module is N rank parallel coupling microstrip structure, the N rank
Parallel coupling microstrip structure includes the N+1 microstrip line arranged in parallel along each microstrip line length direction；
The N+1 microstrip line is equidistant or unequal spacing is distributed, when N+1 microstrip line unequal spacing distribution,
Successively decrease on the basis of spacing of the spacing between intermediate two microstrip lines between adjacent microstrip line to two sides；
The width of the N+1 microstrip line is equal and the length of each microstrip line according to the distribution sequence of microstrip line with intermediate n
Successively decrease on the basis of the length of microstrip line to two sides, as n > 1, the equal length of the intermediate n microstrip line, wherein N and n
It is the positive integer greater than 0.
Preferably, the subharmonic frequency mixing module further includes current-limiting resistance R1 and current-limiting resistance R2, wherein current-limiting resistance R1
It is connected between the input/output terminal of positive and described subharmonic frequency mixing module of diode D1, current-limiting resistance R2 is connected on two poles
Between the cathode of pipe D2 and the input/output terminal of the subharmonic frequency mixing module.
Preferably, the intermediate-freuqncy signal filter module is Coupled Miccrostrip Lines bandpass filter or filter capacitor.
The embodiment of the present invention also provides a kind of Ka wave band tuner, and the Ka wave band tuner includes subharmonic as previously described
Frequency mixer.
Compared with prior art, the present invention the beneficial effect is that:
By the mixed frequency characteristic of the even-order harmonic of the Schottky diode using reverse parallel connection, high-frequency signal and local oscillator are believed
It number is mixed to obtain intermediate-freuqncy signal, to realize the second harmonic mixing function of th harmonic mixer, preferably mixing can obtained
The manufacturing cost of th harmonic mixer is substantially reduced while function.
Detailed description of the invention
Fig. 1 is the basic structure block diagram for the th harmonic mixer that the embodiment of the present invention one provides；
Fig. 2 is the signal of two rank parallel coupling microstrip structures in local oscillation signal filter module provided by Embodiment 2 of the present invention
Figure；
Fig. 3 is the signal of five rank parallel coupling microstrip structures in high-frequency signal filter module provided by Embodiment 2 of the present invention
Figure；
Fig. 4 is the specific block diagram for the subharmonic frequency mixing module that the embodiment of the present invention three provides.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Embodiment one
As shown in Figure 1, in the present embodiment, th harmonic mixer includes local oscillation signal filter module 10, high-frequency signal filter
Wave module 20, subharmonic frequency mixing module 30 and intermediate-freuqncy signal filter module 40.
Subharmonic frequency mixing module 30 includes the Schottky diode pair of reverse parallel connection, and the Schottky diode is to including two
Pole pipe D1 and diode D2, wherein the anode of diode D1 and the cathode of diode D2 connect constitute subharmonic frequency mixing module 30 altogether
Input/output terminal, the cathode of diode D1 and the anode of diode D2 connect the input terminal for constituting subharmonic frequency mixing module 30 altogether.
The input terminal LO IN of local oscillation signal filter module 10 accesses local oscillation signal Vlo, high-frequency signal filter module 20 it is defeated
Enter to hold the input of the output termination subharmonic frequency mixing module 30 of RF IN access high-frequency signal Vrf, high-frequency signal filter module 20
End, the input/output terminal of subharmonic frequency mixing module 30 and the output end of local oscillation signal filter module 10 and intermediate-freuqncy signal filter module
40 input terminal connects altogether, and the output end IF OUT of intermediate-freuqncy signal filter module 40 exports intermediate-freuqncy signal Vif.
Subharmonic frequency mixing module is given in output after the local oscillation signal Vlo of 10 pairs of local oscillation signal filter module accesses is filtered
Output is secondary humorous to subharmonic frequency mixing module 30 after 30, the high-frequency signal Vrf of 20 pairs of high-frequency signal filter module accesses are filtered
Wave mixing module 30 to filtered local oscillation signal and filtered high-frequency signal be mixed to obtain intermediate-freuqncy signal and export to
Intermediate-freuqncy signal filter module 40, intermediate-freuqncy signal filter module 40 obtain filtered intermediate frequency after being filtered to the intermediate-freuqncy signal
Signal Vif is simultaneously exported.
The present embodiment, as subharmonic frequency mixing module, utilizes reverse parallel connection by using the Schottky diode of reverse parallel connection
Schottky diode even-order harmonic mixed frequency characteristic, high-frequency signal and local oscillation signal are mixed to obtain intermediate-freuqncy signal,
To realize the second harmonic mixing function of th harmonic mixer, subharmonic can be substantially reduced while obtaining preferable mixing function
The manufacturing cost of frequency mixer.
Embodiment two
The present embodiment is the further refinement to the subharmonic filter internal device architecture in one is implemented.
In the present embodiment, local oscillation signal filter module 10 and high-frequency signal filter module 20 are all made of parallel coupling micro-strip
Line band-pass filter.
The microstrip line construction of local oscillation signal filter module 10 is M rank parallel coupling microstrip structure, and the M rank parallel coupling is micro-
Band structure includes the M+1 microstrip line arranged in parallel along each microstrip line length direction；
The M+1 microstrip line is equidistant or unequal spacing is distributed, when M+1 microstrip line unequal spacing distribution,
Successively decrease on the basis of spacing of the spacing between intermediate two microstrip lines between adjacent microstrip line to two sides；
The width of the M+1 microstrip line is equal and the length of each microstrip line according to the distribution sequence of microstrip line with intermediate m
Successively decrease on the basis of the length of microstrip line to two sides, as m > 1, the equal length of the intermediate m microstrip line, wherein M and m
It is the positive integer greater than 0.
The microstrip line construction of high-frequency signal filter module 20 is N rank parallel coupling microstrip structure, and the N rank parallel coupling is micro-
Band structure includes the N+1 microstrip line arranged in parallel along each microstrip line length direction；
The N+1 microstrip line is equidistant or unequal spacing is distributed, when N+1 microstrip line unequal spacing distribution,
Successively decrease on the basis of spacing of the spacing between intermediate two microstrip lines between adjacent microstrip line to two sides；
The width of the N+1 microstrip line is equal and the length of each microstrip line according to the distribution sequence of microstrip line with intermediate n
Successively decrease on the basis of the length of microstrip line to two sides, as n > 1, the equal length of the intermediate n microstrip line, wherein N and n
It is the positive integer greater than 0.
As shown in Fig. 2, the microstrip line construction of preferred local oscillation signal filter module 10 is two rank parallel couplings in the present embodiment
Microstrip structure, two rank parallel coupling microstrip structures include three microstrip lines 11 arranged in parallel along each microstrip line length direction
~13；
The length of three microstrip lines 11~13 is followed successively by 117.5mil, 235mil, 117.5mil and (only uses size marking in figure
Line illustrates the length of microstrip line 11), the width D of three microstrip lines 11~13 is that 16mil (is only shown with size marking line in figure
Anticipate out the width of microstrip line 12), the spacing in three microstrip lines 11~13 between adjacent two microstrip lines be 5mil (in figure only
The spacing between microstrip line 12 and 13 is illustrated with size marking line).
In the present embodiment, local oscillation signal filter module 10 access local oscillation signal frequency range be 9.03GHz~
9.22GHz, the centre frequency of the local oscillation signal exported after two ranks parallel coupling microstrip structure filtering are~9.125GHz,
Reflection coefficient of the frequency of the local oscillation signal of output at~9.2GHz is less than -50dB.
In a particular application, the size of the microstrip line of local oscillation signal filter module 10 can on the basis of above-mentioned size root
Fine tuning is optimized according to design requirement, it is not limited to above-mentioned size.
As shown in figure 3, the microstrip line construction of preferred high-frequency signal filter module 20 is five rank parallel couplings in the present embodiment
Microstrip structure, the five ranks parallel coupling microstrip structure include six micro-strips arranged in parallel along each microstrip line length direction
Line 21~26；
The length of six microstrip lines 21~26 is followed successively by 105mil, 215mil, 215mil, 215mil, 215mil, 105mil
(length of microstrip line 21 is only illustrated in figure with size marking line), the width of six microstrip lines be 15mil (in figure only
The width of microstrip line 22 is illustrated with size marking line), spacing in six microstrip lines between adjacent two microstrip lines according to
It is secondary (only to be illustrated between microstrip line 22 and 23 with size marking line in figure for 12mil, 27mil, 30mil, 27mil, 12mil
Spacing).
In the present embodiment, high-frequency signal filter module 20 the high-frequency signal of access frequency range 19.2GHz~
There is preferable filtering characteristic, the high-frequency signal is filtered through the five ranks parallel coupling microstrip structure when within the scope of 20.2GHz
Three dB bandwidth afterwards is~2.87GHz, and input reflection coefficient is less than -20dB.
Using the subharmonic filter of offer described in the present embodiment, when Schottky diode is to the frequency of the high-frequency signal of input
Rate is 20.2GHz, input power is -35dBm, when the frequency of the local oscillation signal of input is 9.125GHz, input power is 5dBm,
The frequency of the local oscillator rd harmonic signal generated after mixing is~18.25GHz, the frequency of the intermediate-freuqncy signal of ultimately mixing output
For the 1.95GHz (calculation formula of IF signal frequency are as follows: -2 times of local oscillation signal frequency=20.2GHz- of high-frequency signal frequency
9.125GHz*2=1.95GHz).
In a particular application, parallel coupling used by local oscillation signal filter module 10 and high-frequency signal filter module 20 is micro-
Band line band-pass filter can add heavy silver process by copper facing or copper facing, be formed on PCB, can with a thickness of 17 μm~34 μm
By selecting local oscillation signal and required Ka wave band high-frequency signal in frequency range.
Embodiment three
This implementation is the further refinement to subharmonic filter provided by embodiment one or embodiment two.
As shown in figure 4, in the present embodiment, th harmonic mixer further includes the input terminal with local oscillation signal filter module 10
The low-noise amplifier 50 of connection, local oscillation signal Vlo are exported again later via the amplification of low-noise amplifier 50 and are filtered to local oscillation signal
Wave module 10 is filtered.
In the present embodiment, subharmonic frequency mixing module 30 further includes current-limiting resistance R1 and current-limiting resistance R2, wherein current-limiting resistance
R1 is connected between the anode of diode D1 and the input/output terminal of subharmonic frequency mixing module 30, and current-limiting resistance R2 is connected on two poles
Between the cathode of pipe D2 and the input/output terminal of subharmonic frequency mixing module 30.
In a particular application, current-limiting resistance R1 and current-limiting resistance R2 is used in temperature change, plays stable Schottky two
The effect of the electric current of pole pipe, to avoid the influence of temperature change current drift caused by Schottky diode；Current-limiting resistance R1 and
Current-limiting resistance R2 can select a plurality of types of resistance such as thermistor, adjustable resistance, fixed value resistance.
In the present embodiment, intermediate-freuqncy signal filter module 40 is Coupled Miccrostrip Lines bandpass filter.
In a particular application, in order to reduce the area of th harmonic mixer, intermediate-freuqncy signal filter module 40 can also be selected
Filter capacitor replaces.
In one embodiment, the present invention also provides the Ka waves on a kind of transceiver applied to the Ka band satellite communications field
Section tuner, the Ka wave band tuner includes th harmonic mixer as previously described.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of th harmonic mixer, including local oscillation signal filter module, high-frequency signal filter module, subharmonic frequency mixing module and
Intermediate-freuqncy signal filter module, which is characterized in that the subharmonic frequency mixing module includes the Schottky diode pair of reverse parallel connection, institute
Schottky diode is stated to including diode D1 and diode D2, wherein the anode of diode D1 and the cathode of diode D2 are total
The input/output terminal for constituting the subharmonic frequency mixing module is connect, the cathode of diode D1 and the anode of diode D2 connect altogether constitutes institute
State the input terminal of subharmonic frequency mixing module；
The input terminal of the local oscillation signal filter module accesses local oscillation signal, the input terminal access of the high-frequency signal filter module
The output of high-frequency signal, the high-frequency signal filter module terminates the input terminal of the subharmonic frequency mixing module, the subharmonic
The output end of the input/output terminal of frequency mixing module and the local oscillation signal filter module and the intermediate-freuqncy signal filter module it is defeated
Enter end to connect altogether, the output end of the intermediate-freuqncy signal filter module exports intermediate-freuqncy signal；
Output is to the subharmonic frequency mixing module, institute after the local oscillation signal filter module is filtered the local oscillation signal of access
Stating output after high-frequency signal filter module is filtered the high-frequency signal of access, to the subharmonic frequency mixing module, described time humorous
Wave mixing module is mixed to obtain intermediate-freuqncy signal and be exported to institute to filtered local oscillation signal and filtered high-frequency signal
Intermediate-freuqncy signal filter module is stated, the intermediate-freuqncy signal filter module exports after being filtered to the intermediate-freuqncy signal, to realize two
Subharmonic mixing function；
The intermediate-freuqncy signal filter module is filter capacitor, to reduce the area of th harmonic mixer；
The th harmonic mixer further includes the low-noise amplifier connecting with the input terminal of the local oscillation signal filter module, this
Vibration signal is exported again later via low-noise amplifier amplification and is filtered to the local oscillation signal filter module.
2. th harmonic mixer as described in claim 1, which is characterized in that the local oscillation signal filter module is parallel coupling
Microstrip Bandpass Filter.
3. th harmonic mixer as claimed in claim 2, which is characterized in that the micro-strip knot of the local oscillation signal filter module
Structure is M rank parallel coupling microstrip structure, and the M rank parallel coupling microstrip structure includes being parallel to each other along each microstrip line length direction
M+1 microstrip line of setting；
The M+1 microstrip line is equidistant or unequal spacing is distributed, adjacent when M+1 microstrip line unequal spacing distribution
Successively decrease on the basis of spacing of the spacing between intermediate two microstrip lines between microstrip line to two sides；
The width of the M+1 microstrip line is equal and the length of each microstrip line is micro- with intermediate m item according to the distribution sequence of microstrip line
Successively decrease on the basis of length with line to two sides, as m > 1, the equal length of the intermediate m microstrip line, wherein M and m are
Positive integer greater than 0.
4. th harmonic mixer as claimed in claim 3, which is characterized in that the micro-strip knot of the local oscillation signal filter module
Structure is two rank parallel coupling microstrip structures, and the frequency range of the local oscillation signal of the local oscillation signal filter module access is
9.03GHz~9.22GHz, the centre frequency of local oscillation signal exported after two ranks parallel coupling microstrip structure filtering is~
9.125GHz。
5. th harmonic mixer as described in claim 1, which is characterized in that the high-frequency signal filter module is parallel coupling
Microstrip Bandpass Filter.
6. th harmonic mixer as claimed in claim 5, which is characterized in that the micro-strip knot of the high-frequency signal filter module
Structure is N rank parallel coupling microstrip structure, and the N rank parallel coupling microstrip structure includes being parallel to each other along each microstrip line length direction
N+1 microstrip line of setting；
The N+1 microstrip line is equidistant or unequal spacing is distributed, adjacent when N+1 microstrip line unequal spacing distribution
Successively decrease on the basis of spacing of the spacing between intermediate two microstrip lines between microstrip line to two sides；
The width of the N+1 microstrip line is equal and the length of each microstrip line is micro- with intermediate n item according to the distribution sequence of microstrip line
Successively decrease on the basis of length with line to two sides, as n > 1, the equal length of the intermediate n microstrip line, wherein N and n are
Positive integer greater than 0.
7. th harmonic mixer as described in claim 1, which is characterized in that the subharmonic frequency mixing module further includes current-limiting resistance
R1 and current-limiting resistance R2, wherein current-limiting resistance R1 is connected on anode and the input of the subharmonic frequency mixing module of diode D1
Between output end, current-limiting resistance R2 be connected on diode D2 cathode and the subharmonic frequency mixing module input/output terminal it
Between.
8. a kind of Ka wave band tuner, which is characterized in that the Ka wave band tuner includes such as any one of claim 1~7 institute
State th harmonic mixer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610460502.1A CN105932968B (en) | 2016-06-23 | 2016-06-23 | A kind of th harmonic mixer and Ka wave band tuner |
| PCT/CN2016/094864 WO2017219459A1 (en) | 2016-06-23 | 2016-08-12 | Sub-harmonic mixer and ka band tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610460502.1A CN105932968B (en) | 2016-06-23 | 2016-06-23 | A kind of th harmonic mixer and Ka wave band tuner |
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| CN105932968A CN105932968A (en) | 2016-09-07 |
| CN105932968B true CN105932968B (en) | 2019-01-25 |
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| WO (1) | WO2017219459A1 (en) |
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| CN106712799B (en) * | 2017-01-18 | 2018-11-23 | 华讯方舟科技（湖北）有限公司 | A kind of frequency converter and its microwave frequency changer circuit |
| CN108631734A (en) * | 2018-03-23 | 2018-10-09 | 杭州电子科技大学 | A kind of millimeter wave broadband frequency mixer based on multiple coupled transmission line |
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2016
- 2016-06-23 CN CN201610460502.1A patent/CN105932968B/en active Active
- 2016-08-12 WO PCT/CN2016/094864 patent/WO2017219459A1/en active Application Filing
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| CN1444309A (en) * | 2002-03-11 | 2003-09-24 | 香港城市大学 | Micrometer wave and milimeter wave guartic harmonic mixer |
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| CN104753468A (en) * | 2015-04-18 | 2015-07-01 | 中国电子科技集团公司第四十一研究所 | Millimeter-wave even harmonic mixer structure |
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| WO2017219459A1 (en) | 2017-12-28 |
| CN105932968A (en) | 2016-09-07 |
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