CN201364941Y - Half-mode substrate integrated waveguide double-balanced mixer - Google Patents
Half-mode substrate integrated waveguide double-balanced mixer Download PDFInfo
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- CN201364941Y CN201364941Y CNU2009200419255U CN200920041925U CN201364941Y CN 201364941 Y CN201364941 Y CN 201364941Y CN U2009200419255 U CNU2009200419255 U CN U2009200419255U CN 200920041925 U CN200920041925 U CN 200920041925U CN 201364941 Y CN201364941 Y CN 201364941Y
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Abstract
The utility model discloses a half-mode substrate integrated waveguide double-balanced mixer. The mixer comprises a radio-frequency balun, a local oscillation balun, a radio-frequency waveguide cavity, a local oscillation waveguide cavity, a mixer tube and a low pass filter. The mixer has the advantages that the volume of the balun is reduced, the frequency mixing efficiency is high, the bandwidth is wider, the structure is simple, and the mixer is very easy to realize in terms of balun projects.
Description
Technical field
Utility model relates to a kind of microwave and millimeter wave double balanced mixer, relates in particular to a kind of double balanced mixer based on half module substrate integrated wave guide.
Background technology
Microwave mixer has obtained a large amount of application in the microwave and millimeter wave radio system, it is a key component of transceiver, generally, the radiofrequency signal that receives is downconverted to intermediate-freuqncy signal, so that further handle and return signal as first or second parts of input; Perhaps with the intermediate-freuqncy signal up-conversion to the microwave and millimeter wave signal, so that it is at spatial transmission.It is integrated that development of Communication Technique requires each parts to be easy to, miniaturization, and lightweight and high reliability, the quality of frequency mixer performance directly influences the performance of whole system.Traditional microwave mixer, owing to adopted the passive circuit of microstrip structure, the leakage of energy, radiation and interference are big, conversion efficiency is lower; Loss for the higher microwave and millimeter wave frequency range performance of frequency is more remarkable.This class formation need occupy the surf zone of circuit board simultaneously, to such an extent as to make the integrated level of the whole microwave and millimeter wave of frequency mixer system reduce.
The utility model content
The utility model purpose is to provide a kind of double balanced mixer based on half module substrate integrated wave guide at the defective that prior art exists.Good conversion loss is provided in its frequency range.Further reduce the volume of frequency mixer, helped the integrated design of circuit.
The utility model adopts following technical scheme for achieving the above object:
The utility model seminorm substrate integration waveguide double-balance mixer; it is characterized in that comprising radio frequency Ba Lun, local oscillator Ba Lun, radio-frequency plumbing cavity, local oscillator wave-guide cavity wave, mixer tube and low pass filter; wherein radio frequency Ba Lun is arranged on the radio-frequency plumbing cavity; local oscillator Ba Lun is arranged on the local oscillator wave-guide cavity wave; the output of radio frequency Ba Lun, the output of local oscillator Ba Lun connect the input of mixer tube respectively; the coupled end of radio frequency Ba Lun, the coupled end of local oscillator Ba Lun connect the output of mixer tube respectively, and the short-circuit line of local oscillator Ba Lun connects the input of low pass filter.
The beneficial effects of the utility model:
The utility model is based on the microwave double balanced mixer of half module substrate integrated wave guide art designs, on dielectric substrate, realized having high Q value, low-loss half module substrate integrated wave guide, this structure have transmission characteristic and the field distribution similar with rectangular waveguide; Utilize half module substrate integrated wave guide to form 180 ° of waveguide Ba Lun.Two surfaces up and down at waveguide Ba Lun add mixer tube, and its mixed product is exported after filtering, in double balanced mixer structure of the present utility model, half module substrate integrated wave guide structure and the design of microwave and millimeter wave double balanced mixer are combined; Use 180 ° of half module substrate integrated wave guide Ba Lun as the radiofrequency signal of frequency mixer and the power division device of local oscillation signal, realized the mixing function on this basis.Compared with prior art, the utlity model has following advantage:
1) to be easy to the plane in the design of microwave and millimeter wave circuit integrated for seminorm substrate integration waveguide double-balance mixer, reduced the volume of Ba Lun greatly, solved the problem that whole double balanced mixer volume is increased.
2) mixing efficiency height.Because the dielectric substrate integrated waveguide technological attrition is low, mixing efficiency is improved.
3) broader bandwidth.After substrate integrated waveguide technology is applied to mixting circuit, has the bandwidth of broad.
4) simple in structure.Very easily realize on the half module substrate integrated wave guide Ba Lun engineering of 180 ° of anti-phase principle design of employing upper and lower surface electric current.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 inserts the curve chart that loss changes with local oscillation power.
Fig. 3 inserts the curve chart that the frequent rate of loss carried as side-arm changes.
Embodiment
Be elaborated below in conjunction with the technical scheme of accompanying drawing to utility model:
As shown in Figure 1; seminorm substrate integration waveguide double-balance mixer; it is characterized in that comprising radio frequency Ba Lun 1; local oscillator Ba Lun 2; radio-frequency plumbing cavity L1; local oscillator wave-guide cavity wave L2; mixer tube 3 and low pass filter 4; wherein radio frequency Ba Lun 1 is arranged on the radio-frequency plumbing cavity L1; local oscillator Ba Lun 2 is arranged on the local oscillator wave-guide cavity wave L2; the output of radio frequency Ba Lun 1; the output of local oscillator Ba Lun 2 connects the input of mixer tube 3 respectively; the coupled end of radio frequency Ba Lun 1; the coupled end of local oscillator Ba Lun 2 connects the output of mixer tube 3 respectively, and the short-circuit line of local oscillator Ba Lun 2 connects the input of low pass filter 4.
Double balanced mixer based on the half module substrate integrated wave guide structure; the radio frequency barron structure 1 and the local oscillator barron structure 2 that comprise two 180 ° half module substrate integrated wave guide; it is right to be connected four mixing organ pipes with coupled end at the output of 180 ° of half module substrate integrated wave guide Ba Lun 1,2, connects medium frequency output end at the node of the output of local oscillator Ba Lun 2.Above-mentioned 180 ° of half module substrate integrated wave guide Ba Lun comprise the two-sided dielectric substrate that is provided with metal patch, are provided with a half module substrate integrated wave guide cavity on dielectric substrate.Upper surface at radio frequency Ba Lun cavity one end is provided with rf inputs, is respectively equipped with radio-frequency (RF) output end and coupled end in the upper and lower surface of the other end of cavity, and the local oscillator barron structure is similar to radio frequency Ba Lun.
The utility model adopts two balanced mixing schemes, adopts the power division device of 180 ° of half module substrate integrated wave guide Ba Lun as radio frequency and local oscillator, adopts non-linear Schottky diode as the mixing nonlinear device.Radio frequency and local oscillation signal be divided into the two-way constant amplitude by radio frequency Ba Lun 1 and local oscillator Ba Lun 2 respectively but mutually the signal of 180 ° of phasic differences be added on four diodes, realized local oscillator and radiofrequency signal good isolation.Utilize the radio frequency of non-linear generation of diode and the difference signal of local oscillator, promptly intermediate-freuqncy signal by other harmonic waves of low pass filter filters out, is taken out intermediate-freuqncy signal, has finished by the optical mixing process of radiofrequency signal to intermediate-freuqncy signal.Introduce 1/2 identical wavelength open line respectively in the upper and lower surface of radio frequency Ba Lun, for radiofrequency signal,, for intermediate-freuqncy signal, be short circuit, prevent that intermediate-freuqncy signal is leaked to rf inputs for open circuit; Introduce 1/4 identical short-circuit line respectively in the upper and lower surface of local oscillator Ba Lun, for intermediate-freuqncy signal, be short circuit, thereby take out intermediate-freuqncy signal, for local oscillation signal,, prevent that local oscillation signal from entering the intermediate frequency end for open circuit at the short-circuit line place.In intermediate frequency port, designed little band step impedance low pass filter, isolate radio frequency and local oscillation signal.
A kind of seminorm substrate integration waveguide double-balance mixer that is used for the microwave and millimeter wave circuit; comprise 180 ° of half module substrate integrated wave guide radio frequency Ba Lun 1 and local oscillator Ba Lun 2; output and coupled end at 180 ° of half module substrate integrated wave guide radio frequency Ba Lun I and local oscillator Ba Lun II are connected with mixer tube respectively to D1; D2; D3 and D4; intermediate frequency short circuit branch line place at local oscillator Ba Lun connects medium frequency output end; wherein radio frequency and local oscillator Ba Lun comprise the two-sided dielectric substrate 1 that is provided with metal patch; 2; at dielectric substrate 1; 2 are provided with two half module substrate integrated wave guide cavity L1; L2; the upper surface of the end of a half module substrate integrated wave guide cavity L1 is provided with rf inputs therein, is respectively equipped with radio-frequency (RF) output end and coupled end on two surfaces up and down of the other end.Another half module substrate integrated wave guide cavity L2 port is provided with identical with L1.
The utility model has been realized the seminorm substrate integration waveguide double-balance mixer of above introduction at X-band, and adopting thickness is the dielectric substrate of 1mm, and relative dielectric constant is 2.65, as shown in drawings.Other parameters are as follows:
| Unit | L | W_taper | W_stub | via |
| mm | 9.6 | 4.3 | 2.7 | 0.2 |
| Width | L1 | L_taper | L_stub | p |
| 9.8 | 6 | 1 | 3 | 0.8 |
Below be test result:
Fig. 2 has shown when radio frequency and local oscillator are respectively 9GHz and 10GHz, the relation between emulation and conversion loss that measures and the local oscillation power.Wherein radio frequency and local oscillator are respectively 9.4GHz and 10.4GHz, and when local oscillation power was 8dBm, the conversion loss of measurement was 7.3dB.
Among Fig. 3, when local frequency is fixed as 10.4GHz, when local oscillation power is 8dBm, relation between conversion loss and the rf frequency, the conversion loss that measures is lower than 10dB in a wider frequency, local frequency is in the frequency range of 9-11.5GHz, and the conversion loss of measurement is below 12dBm.This has verified the broadband character of frequency mixer.
Claims (1)
1; a kind of seminorm substrate integration waveguide double-balance mixer; it is characterized in that comprising radio frequency Ba Lun (1); local oscillator Ba Lun (2); radio-frequency plumbing cavity (L1); local oscillator wave-guide cavity wave (L2); mixer tube (3) and low pass filter (4); wherein radio frequency Ba Lun (1) is arranged on the radio-frequency plumbing cavity (L1); local oscillator Ba Lun (2) is arranged on the local oscillator wave-guide cavity wave (L2); the output of radio frequency Ba Lun (1); the output of local oscillator Ba Lun (2) connects the input of mixer tube (3) respectively; the coupled end of radio frequency Ba Lun (1); the coupled end of local oscillator Ba Lun (2) connects the output of mixer tube (3) respectively, and the short-circuit line of local oscillator Ba Lun (2) connects the input of low pass filter (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200419255U CN201364941Y (en) | 2009-03-18 | 2009-03-18 | Half-mode substrate integrated waveguide double-balanced mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200419255U CN201364941Y (en) | 2009-03-18 | 2009-03-18 | Half-mode substrate integrated waveguide double-balanced mixer |
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| Publication Number | Publication Date |
|---|---|
| CN201364941Y true CN201364941Y (en) | 2009-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2009200419255U Expired - Fee Related CN201364941Y (en) | 2009-03-18 | 2009-03-18 | Half-mode substrate integrated waveguide double-balanced mixer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338008A (en) * | 2013-07-24 | 2013-10-02 | 东南大学 | Wide/intermediate frequency MMW (Millimeter Wave) double-balance passive frequency mixer |
| CN104868852A (en) * | 2015-04-21 | 2015-08-26 | 中国电子科技集团公司第四十一研究所 | Passive double balanced mixer based on novel groove line-microstrip Balun |
| CN111193085A (en) * | 2020-02-24 | 2020-05-22 | 南京理工大学 | Double-passband balun filter |
-
2009
- 2009-03-18 CN CNU2009200419255U patent/CN201364941Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338008A (en) * | 2013-07-24 | 2013-10-02 | 东南大学 | Wide/intermediate frequency MMW (Millimeter Wave) double-balance passive frequency mixer |
| CN104868852A (en) * | 2015-04-21 | 2015-08-26 | 中国电子科技集团公司第四十一研究所 | Passive double balanced mixer based on novel groove line-microstrip Balun |
| CN104868852B (en) * | 2015-04-21 | 2017-11-14 | 中国电子科技集团公司第四十一研究所 | A kind of passive double balanced mixer based on new line of rabbet joint microstrip balun |
| CN111193085A (en) * | 2020-02-24 | 2020-05-22 | 南京理工大学 | Double-passband balun filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20180318 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |