CN101034898A - Micro-band technical broadband power allocation/synthesizer - Google Patents
Micro-band technical broadband power allocation/synthesizer Download PDFInfo
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- CN101034898A CN101034898A CNA2007100104867A CN200710010486A CN101034898A CN 101034898 A CN101034898 A CN 101034898A CN A2007100104867 A CNA2007100104867 A CN A2007100104867A CN 200710010486 A CN200710010486 A CN 200710010486A CN 101034898 A CN101034898 A CN 101034898A
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Abstract
The invention relates to the wireless communication equipment technology area, specially relates to a micro belt technology wideband power distribution/synthesizer. This equipment uses two 1/4 wavelength impedance conversion technology, used in impedance conversion function micro fasciole TL1, TL2, TL3, TL4 length is the 1/4 of TL1-TL4 wave length when the working band in the center frequency signal transmited. Through choose the characteristic impedance of the impedance conversion functionmicro fasciole, causes its input/output port voltage standing wave ratio VSWR according to the Chebyshev multinomial arranged, may completely cover 470-860MHz in the UHF frequency band, reduces the part type of the serial products, facilitates the production.
Description
Technical field
The present invention relates to the wireless telecommunications system technical field, particularly a kind of micro-band technical broadband power distribution/synthesizer.
Background technology
RF distribution/synthetic technology is one of key technology in all solid state radio and television transmitter, and micro strip line type distribution/comprise network is a kind of passive, reciprocal networks, so it both can be used as distributor, also can treat as synthesizer.Along with the development of technology, RF part (comprising distributor, power amplifier, synthesizer, directional coupler etc.) all wishes to adopt wideband circuit in the transmission of television equipment, can conveniently produce like this.Traditional micro strip line type RF distribution/synthesizer is to adopt single-unit 1/4 wavelength transmission line impedance conversion technology, because its working band is narrow so bring a lot of inconvenience to production.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of micro-band technical broadband power distribution/synthesizer is provided, this device adopts 2 joints, 1/4 wavelength transmission line impedance conversion technology, by selecting the characteristic impedance of impedance conversion function microstrip line, the voltage standing wave ratio VSWR of its input/output end port is arranged by the Chebyshev multinomial, can cover 470～860MHz fully at uhf band, reduce the kind of parts in the series of products, convenient production.
In order to realize purpose of the present invention, the present invention adopts following technical scheme to realize:
Micro-band technical broadband power distribution/synthesizer, it is characterized in that: this device adopts the impedance conversion technology of two joints, 1/4 wavelength, the length that promptly is used for microstrip line TL1, TL2, TL3, the TL4 of impedance conversion function be in the working band center frequency signal when TL1～TL4 transmission wavelength 1/4.
Described micro-band technical broadband power distribution/synthesizer, it is characterized in that: microstrip line TL1, the TL2, TL3, TL4 characteristic impedance Z1, Z2, Z3, the Z4 that are used for the impedance conversion function satisfy following relation: Z1=Z2, Z3=Z4, and Z1*Z3=Z2*Z4=5000, the span of Z3, Z4 is 58～63 Ω.
Described micro-band technical broadband power distribution/synthesizer is characterized in that: the characteristic impedance of input/output end port A, B, C characteristic impedance and microstrip line TL5, TL6, TL7 is 50 Ω, balanced load R=100 Ω.
Described micro-band technical broadband power distribution/synthesizer is characterized in that: adopt a plurality of above-mentioned distribution/synthesizers " cascade " can form 2
n(n=2,3,4,5 ...) road distribution/synthesizer.
The invention has the beneficial effects as follows: adopt stripline technique, broadband need not during production to adjust.Curve 1 (traditional) in the comparison diagram 3 and curve 2 (novel) as can be seen, novel distribution/synthesizer bandwidth of operation obviously is better than traditional distribution/synthesizer under same VSWR1 condition; Novel in theory distribution/synthesizer 470～860MHz (in the frequency range of bandwidth=390MHz), the VSWR of port A＜1.1; And under such VSWR situation, at traditional distribution/synthesizer bandwidth＜130MHz, and both insertion losses are almost equal.
Description of drawings
Fig. 1 is the schematic diagram of traditional micro-band technical broadband power distribution/synthesizer.
Fig. 2 is the schematic diagram of micro-band technical broadband power distribution/synthesizer of the present invention.
Fig. 3 is a micro-band technical broadband power distribution/synthesizer VSWR-frequency characteristics of the present invention
(wherein curve 1 is the VSWR-frequency characteristics of Fig. 1 port A; Curve 2 is VSWR-frequency characteristicss of Fig. 2 port A; Transverse axis is a frequency, and the longitudinal axis is A mouth VSWR)
Fig. 4 is the schematic diagram of the embodiment of the invention 1.
Fig. 5 is the schematic diagram of the embodiment of the invention 2.
Fig. 6 is the schematic diagram of the embodiment of the invention 3.
Embodiment
Micro-band technical broadband power distribution/synthesizer mainly comprises A, B, three input/output interfaces of C, microstrip line TL1～TL7, and balanced load R sees Fig. 2, Fig. 4, Fig. 5; When this device used as distributor, A was a signal input port, and B, C are signal output port; During as synthesizer, B, C are signal input port, and A is an output port.It is characterized in that: this device adopts the impedance conversion technology of two joints, 1/4 wavelength, in 470～860MHz frequency range, and the VSWR of port A＜1.1 in theory.
Fig. 2 is a Wideband distribution/synthesizer schematic diagram, and the present invention adopts 2 joints, 1/4 wavelength transmission line impedance conversion technology, in 470～860MHz frequency range, and the VSWR of port A＜1.1 in theory.
If distribution/synthesizer and power amplifier are positioned at a unit box, can take the scheme implementation of Fig. 4: adopt low loss dielectric (adopting the polytetrafluoroethylene glass mat in this example) print circuit plates making microstrip line TL1～TL7, MS1 is tandem place of TL1, TL3, MS2 is tandem place of TL2, TL4, MT1 is tandem place of TL3, TL5, R, MT2 is tandem place of TL4, TL6, R, and MT3 is tandem place of TL1, TL2, TL7.
If the characteristic impedance of microstrip line TL1, TL2, TL3, TL4, TL5, TL6, TL7 is respectively Z1, Z2, Z3, Z4, Z5, Z6, Z7, select suitable micro belt line width, make Z5=Z6=Z7=50 Ω, Z1=Z2, Z3=Z4 selects Z1～Z4 value, makes Z1*Z3=Z2*Z4=5000, optimum valuing range 58～63 Ω of Z3, Z4, balanced load R=100 Ω.
Microstrip line TL1～TL4 length be when center frequency signal is transmitted in TL1～TL4 in the working band wavelength 1/4, if the length of microstrip line TL1～TL7 is respectively L1, L2, L3, L4, L5, L6, L7, there is following relation so: L1=L2=L3=L4=λ g/4, TL5～TL7 length L 5-L7 can adjust according to the position of input/output end port, need satisfy TL5, TL6 length L 5=L6.
Embodiment 2
See Fig. 5, embodiment 1 described device is installed in the can, need to consider the heat radiation requirement simultaneously, at A, B, three interface positions of C three coaxial 50 Ω connectors (for example N type, BNC type etc.) are installed, each parts annexation is with embodiment 1.
Embodiment 3
Adopt a plurality of same distribution/synthesizers " cascade " can form 2
n(n=2,3,4,5 ...) road distribution/synthesizer, Fig. 6 has provided 4 tunnel distribution/synthesizers, and adopting uses the same method can form 8,16,32 ... 2
nRoad distribution/synthesizer, among Fig. 6 D1, D2, D3 be with Fig. 4 or Fig. 5 in identical device.
Claims (4)
1, micro-band technical broadband power distribution/synthesizer, it is characterized in that: this device adopts the impedance conversion technology of two joints, 1/4 wavelength, the length that promptly is used for microstrip line TL1, TL2, TL3, the TL4 of impedance conversion function be in the working band center frequency signal when TL1～TL4 transmission wavelength 1/4.
2, micro-band technical broadband power distribution/synthesizer according to claim 1, it is characterized in that: microstrip line TL1, the TL2, TL3, TL4 characteristic impedance Z1, Z2, Z3, the Z4 that are used for the impedance conversion function satisfy following relation: Z1=Z2, Z3=Z4, and Z1*Z3=Z2*Z4=5000, the span of Z3, Z4 is 58～63 Ω.
3, micro-band technical broadband power distribution/synthesizer according to claim 1 and 2 is characterized in that: the characteristic impedance of input/output end port A, B, C characteristic impedance and microstrip line TL5, TL6, TL7 is 50 Ω, balanced load R=100 Ω.
4, according to claim 1,2 or 3 described micro-band technical broadband power distribution/synthesizers, it is characterized in that: adopt a plurality of above-mentioned distribution/synthesizers " cascade " can form 2
n(n=2,3,4,5......) road distribution/synthesizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100104867A CN101034898A (en) | 2007-02-23 | 2007-02-23 | Micro-band technical broadband power allocation/synthesizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100104867A CN101034898A (en) | 2007-02-23 | 2007-02-23 | Micro-band technical broadband power allocation/synthesizer |
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| CN101034898A true CN101034898A (en) | 2007-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100104867A Pending CN101034898A (en) | 2007-02-23 | 2007-02-23 | Micro-band technical broadband power allocation/synthesizer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437774A (en) * | 2011-12-30 | 2012-05-02 | 四川大学 | High-power centralized microwave rectifier circuit |
| CN101465457B (en) * | 2009-01-15 | 2012-11-21 | 电子科技大学 | High power wideband four-way power distributor and synthesizer |
| CN114497952A (en) * | 2021-12-31 | 2022-05-13 | 镇江达联电子科技有限公司 | Power divider with higher harmonic suppression characteristic and design method thereof |
-
2007
- 2007-02-23 CN CNA2007100104867A patent/CN101034898A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465457B (en) * | 2009-01-15 | 2012-11-21 | 电子科技大学 | High power wideband four-way power distributor and synthesizer |
| CN102437774A (en) * | 2011-12-30 | 2012-05-02 | 四川大学 | High-power centralized microwave rectifier circuit |
| CN114497952A (en) * | 2021-12-31 | 2022-05-13 | 镇江达联电子科技有限公司 | Power divider with higher harmonic suppression characteristic and design method thereof |
| CN114497952B (en) * | 2021-12-31 | 2023-05-16 | 镇江达联电子科技有限公司 | Power divider with higher harmonic suppression characteristic and design method thereof |
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