CN2870198Y - Equivalent analysing circuit of mixing ring for balance mixer - Google Patents
Equivalent analysing circuit of mixing ring for balance mixer Download PDFInfo
- Publication number
- CN2870198Y CN2870198Y CN 200620038724 CN200620038724U CN2870198Y CN 2870198 Y CN2870198 Y CN 2870198Y CN 200620038724 CN200620038724 CN 200620038724 CN 200620038724 U CN200620038724 U CN 200620038724U CN 2870198 Y CN2870198 Y CN 2870198Y
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- ring
- width
- arm
- hybrid ring
- microstrip line
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Abstract
The utility model discloses an equivalent analysis circuit of hybrid ring for balanced mixer, which comprises six sections of ring arm, ring arm length is 1/4 wave length of center frequency, ring arm angle is 60 degree, also includes six sections of microstrip line, said six sections of ring arm are connected in turn, said microstrip line is led out from intersection point of two adjacent ring arms, said microstrip line superposes ring arm in quadrature to form ring type, five ports of hybrid ring are led out from five sections of microstrip line respectively. The analysis circuit is applicable to analyze of microwave hybrid ring of various frequency bands, especially analysis of microwave high band hybrid ring and application of hybrid ring in microwave high band mixer. The utility model satisfies design technology of microwave circuit.
Description
Technical field
The utility model has provided a kind of hybrid ring equivalent analysis circuit, and this analysis circuit is applicable to the analysis of the Microwave Hybrid ring of various frequency ranges, the especially analysis of microwave high-frequency section hybrid ring and the hybrid ring application in microwave high-frequency section frequency mixer.The utility model meets the designing technique of microwave circuit.
Background technology:
Provide the isolation of local oscillator and radio frequency preferably with hybrid ring in the ring mixer design, therefore providing accurately, the analytical method of hybrid ring is a very important link in the ring mixer design.More accurate method is that hybrid ring is carried out EM (all-wave electromagnetic field) emulation, then emulated data is saved as the S Parameter File, brings in the circuit to get final product.Yet what frequency mixer was carried out is the emulation of large-signal harmonic wave, the scheme that the S Parameter File is brought into, and data volume is bigger on the one hand, and emulation is slower, and owing to do not consider the influence of multiple harmonic, the conversion loss characteristic of emulation is inaccurate simultaneously.So consider emphatically how to replace hybrid ring to carry out harmonic wave emulation with branch line and annular microstrip line, as shown in Figure 1, conventional method be the annular arms (the center arc length is 1/4 wavelength) and four with six joints, 60 degree save branch lines and two save microstrip lines successively cascade be similar to.In the microwave low-frequency range, 1/4 wavelength is much larger than the width of branch line, this approximation method is feasible, yet in millimere-wave band, 3～4 times of the length of the annular arm of 1/4 wavelength the chances are branch line width, the actual domain of equivalent electric circuit correspondence is the domain among Fig. 1 a among Fig. 1 b, the domain that comes out of circuit equivalent is actually the annulus of similar hexagonal structure in this case as can be seen, rather than annulus and actual conditions have very big error completely.Be only applicable to the microwave low-frequency range, then have bigger error in the microwave high-frequency section.
Summary of the invention:
Technical problem to be solved in the utility model provides a kind of analysis and little hybrid ring equivalent analysis circuit of error that is applicable to the analysis of the Microwave Hybrid ring of various frequency ranges, especially microwave high-frequency section hybrid ring, to overcome the bigger defective of error that traditional equivalent analysis circuit application exists at high band.
The technical scheme of the utility model technical solution problem is as follows:
A kind of balanced mixer equivalent analysis circuit of hybrid ring, comprise six-membered ring type arm, the length of circular type arm is 1/4 wavelength of centre frequency, the angle of circular type arm is 60 degree, also comprise six joint microstrip lines, described six-membered ring shape arm links to each other successively, and described microstrip line is drawn from the intersection point of two adjacent circular type arms, the overlapping circular ring type that is merged into of described microstrip line and circular type arm quadrature, five ports of hybrid ring are drawn by five joint microstrip lines wherein respectively.
By above disclosed technical scheme as can be known, the utility model is considered from the structure of annular power splitter own, provided a kind of hybrid ring equivalent analysis circuit: replace branch line with one section microstrip line, by in domain six-membered ring shape arm being linked to each other successively, microstrip line is drawn from the intersection point of annular arm.The overlapping then circular ring type that is merged into forms the utility model equivalent electric circuit.The utility model equivalent electric circuit is consistent with actual domain shape, and consistent with emulation S parameter to actual domain to equivalent circuit simulation, overcome that traditional equivalent analysis circuit is applied in analytic process that high band brings than mistake.
Description of drawings:
Fig. 1 a is traditional actual corresponding domain of hybrid ring equivalent electric circuit;
Fig. 1 b is traditional hybrid ring equivalent electric circuit;
Fig. 2 a is the piecemeal domain of the utility model hybrid ring equivalent electric circuit correspondence;
Fig. 2 b is the amalgamation domain of the utility model hybrid ring equivalent electric circuit correspondence
Fig. 2 c is the utility model hybrid ring equivalent electric circuit;
Fig. 3 a is the circuit simulation of Ka wave band the utility model hybrid ring equivalent electric circuit and the contrast of domain electromagnetic-field simulation S11 parameter;
Fig. 3 b is for being the circuit simulation of Ka wave band the utility model hybrid ring equivalent electric circuit and the contrast of domain electromagnetic-field simulation S21 and S31 parameter;
Fig. 4 is Ka wave band mixer conversion loss and the isolation change curve with local frequency;
Fig. 5 is the change curve of Ka wave band mixer conversion loss with local oscillation power;
Fig. 6 is 24GHz mixer conversion loss and the isolation change curve with local frequency;
Fig. 7 is 24GHz mixer conversion loss and the isolation change curve with local oscillation power.
Wherein: among Fig. 3 ,-Sche-S represents the circuit simulation result, and-Mom-S represents a simulation result; Among Fig. 5, Fig. 6, Fig. 7 ,-S represents simulation result, and-T represents test result.
Embodiment:
Further specify the utility model specific embodiment below in conjunction with accompanying drawing.
Shown in Fig. 2 c, the utility model balanced mixer equivalent analysis circuit of hybrid ring, comprise six-membered ring type arm 6, the width of annular arm is the micro belt line width of center frequency points characteristic impedance 70.7 Ω, the angle of annular arm is set as 60 degree, by adjusting the radius of annular arm, the arc length that makes annular arm is the quarter-wave of center frequency points; Also comprise six joint microstrip lines 7, the length of microstrip line 7 is half of annular arm 6 width, described six-membered ring shape arm 7 links to each other successively, described microstrip line 7 is drawn from the intersection point center of two adjacent circular type arms 6, described microstrip line 7 and the overlapping circular ring type that is merged into of circular type arm 6 quadratures, five ports of hybrid ring are drawn by five joint microstrip lines 7 wherein respectively.
The port one of hybrid ring connects the local oscillator end (LO) of frequency mixer, and port 3 connects the radio-frequency head end (RF) of frequency mixer, and port 5 connects the intermediate frequency end (IF) of frequency mixer, and port 2 is connected diode to ground with port 4.Two width that save microstrip lines 701,703 that link to each other with port 3 with port one are the micro belt line width of 50 Ω for the center frequency points characteristic impedance, and all the other width that respectively save microstrip line 702,704 and 705 are the micro belt line width of 100 Ω for the center frequency points characteristic impedance.
By Fig. 3 a and Fig. 3 b, the S parameters simulation result of the S parameters simulation of the utility model hybrid ring equivalent electric circuit and domain electromagnetic field, both contrast amplitudes are consistent, and frequency characteristic is variant slightly.
Simulation curve that changes with local oscillation power by Fig. 5 mixer conversion loss and test curve as can be seen, both are consistent.
As Fig. 6, shown in Figure 7, the simulation result of the 24GHz frequency mixer of making according to the utility model equivalent analysis circuit design is more consistent with test result.
Claims (6)
1. a balanced mixer is with the equivalent analysis circuit of hybrid ring, comprise six-membered ring type arm, the length of circular type arm is 1/4 wavelength of centre frequency, the angle of circular type arm is 60 degree, it is characterized in that, also comprises six joint microstrip lines, described six-membered ring shape arm links to each other successively, described microstrip line is drawn from the intersection point of two adjacent circular type arms, and the overlapping circular ring type that is merged into of described microstrip line and circular type arm quadrature, five ports of hybrid ring are drawn by five joint microstrip lines wherein respectively.
2. balanced mixer according to claim 1 is characterized in that with the equivalent analysis circuit of hybrid ring the length of microstrip line is half of annular arm width.
3. balanced mixer according to claim 1 is characterized in that with the equivalent analysis circuit of hybrid ring microstrip line is drawn from the intersection point center of annular arm.
4. balanced mixer according to claim 1 is characterized in that with the equivalent analysis circuit of hybrid ring the width of described microstrip line is respectively the characteristic impedance width of 50 Ω and 100 Ω.
5. balanced mixer according to claim 1 is characterized in that with the equivalent analysis circuit of hybrid ring the width of annular arm is the micro belt line width of center frequency points characteristic impedance 70.7 Ω.
6. the balanced mixer according to claim 4 equivalent analysis circuit of hybrid ring, it is characterized in that, two width that save microstrip lines that link to each other with prevention at radio-frequency port with the local oscillator port are the micro belt line width of 50 Ω for the center frequency points characteristic impedance, and all the other width that respectively save microstrip line are the micro belt line width of 100 Ω for the center frequency points characteristic impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620038724 CN2870198Y (en) | 2006-01-05 | 2006-01-05 | Equivalent analysing circuit of mixing ring for balance mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620038724 CN2870198Y (en) | 2006-01-05 | 2006-01-05 | Equivalent analysing circuit of mixing ring for balance mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2870198Y true CN2870198Y (en) | 2007-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620038724 Expired - Lifetime CN2870198Y (en) | 2006-01-05 | 2006-01-05 | Equivalent analysing circuit of mixing ring for balance mixer |
Country Status (1)
| Country | Link |
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| CN (1) | CN2870198Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035994A (en) * | 2011-08-22 | 2013-04-10 | 英飞凌科技股份有限公司 | Microstrip coupler combining transmit-receive signal separation and differential to single ended conversion |
| CN101728622B (en) * | 2010-01-07 | 2013-08-14 | 陈艳艳 | Method for preparing broadband ring electric bridge and electric bridge prepared by implementing method |
-
2006
- 2006-01-05 CN CN 200620038724 patent/CN2870198Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728622B (en) * | 2010-01-07 | 2013-08-14 | 陈艳艳 | Method for preparing broadband ring electric bridge and electric bridge prepared by implementing method |
| CN103035994A (en) * | 2011-08-22 | 2013-04-10 | 英飞凌科技股份有限公司 | Microstrip coupler combining transmit-receive signal separation and differential to single ended conversion |
| CN103035994B (en) * | 2011-08-22 | 2016-03-23 | 英飞凌科技股份有限公司 | The microstrip coupler of the separation of combined transmit Received signal strength and differential-to-single-ended conversion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070214 |
|
| EXPY | Termination of patent right or utility model |