CN2369421Y - Two terminal modulator without resonant cavity - Google Patents
Two terminal modulator without resonant cavity Download PDFInfo
- Publication number
- CN2369421Y CN2369421Y CN 99231107 CN99231107U CN2369421Y CN 2369421 Y CN2369421 Y CN 2369421Y CN 99231107 CN99231107 CN 99231107 CN 99231107 U CN99231107 U CN 99231107U CN 2369421 Y CN2369421 Y CN 2369421Y
- Authority
- CN
- China
- Prior art keywords
- coaxial line
- line transmission
- resonant cavity
- transmission transformer
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a dual form combiner that has no resonant cavity and comprises a casing, input connectors, two output connectors, a balancing resistor, a coaxial line transmission transformer, and an impedance converter. The balancing resistor is connected in parallel with the coaxial line transmission transformer, both ends of the balancing resistor are connected to the two input connectors, the impedance converter is connected between the output connectors and the intermediate taps of the coaxial line transmission transformer, and two paths of input signals are combined into on path that is output by the output connectors. The utility model has the advantages of no resonant cavity, low loss, small size, light weight, and simple manufacturing process, and is suitable for the fields of wireless communication and electronic countermeasures, etc.
Description
The utility model belongs to the means for anti-jamming technical field.
At present, the hurried growth of China's radio traffic, Cellular Networks, cluster net, radio paging advanced person's multifunctional network replaces simple communication mode in the past gradually.When multichannel communication, if each channel erects a television antenna separately, feeder line and iron tower expense and site are selected very difficult.Though adopt antenna duplexer technology energy head it off, all adopt the traditional mixer of band resonant cavity.Each branch road of traditional mixer all has coaxial resonant cavity body, the ferrite isolator of quarter-wave or four/three-wavelength, shared tuner, and the standard rack of stube cable and 19 inches is formed.When particularly two paths of signals was synthetic, this traditional mixer volume was big, Heavy Weight, cost height, complex process.
The purpose of this utility model is to provide a kind of no resonant cavity two mixers.
The purpose of this utility model is achieved in that a kind of no resonant cavity two mixers, comprises housing, two input adapters, out splice going splice, balance resistance R
LCoaxial line transmission transformer and impedance transducer.2 input adapters and 1 out splice going splice are contained on the housing.Balance resistance R
LTwo ends are connected between two input adapters.Coaxial line transmission transformer and balance resistance R
LIn parallel.Impedance transducer is connected between the centre tap and out splice going splice of coaxial line transmission transformer.When the input impedance of two mixers and output impedance are Z, balance resistance R
L=2Z.The characteristic impedance of coaxial line transmission transformer is Z, length L≤0.1 λ
ε(λ ε is the medium wavelength).Impedance transducer is made length with coaxial line
Characteristic impedance is 0.707Z.Two input signals are exported by impedance transducer and out splice going splice after merging into a signal through balance resistance and coaxial line transmission transformer.
The utility model has the advantages that: two signals are played synthesis, because of no resonant cavity, so channel spacing is narrow, the loss during by signal is low, volume is little, in light weight, cost is low, technology is simple.Be applicable to Cellular Networks, cluster net, fields such as the radio communication of radio paging network and electronic countermeasures.
Fig. 1 is a structure chart of the present utility model.Fig. 1 is described as follows, and among Fig. 1,1 is housing, and 2 and 3 is input adapter, and 7 is out splice going splice, and 4 is balance resistance, and 5 is the coaxial line transmission transformer, and 6 is impedance transducer.
Embodiment of the present utility model 1 explanation its structure and annexation in conjunction with the accompanying drawings is as follows: embodiment comprises housing 1, two input adapters 2,3, out splice going splice 7, balance resistance R
L4, coaxial line transmission transformer 5 and impedance transducer 6.Input adapter 2,3 and out splice going splice 7 are contained on the housing 1.Balance resistance R
L4 two ends are connected between two input adapters 2,3.Coaxial line transmission transformer 5 and balance resistance R
L4 parallel connections.Impedance transducer is connected between the centre tap and out splice going splice 7 of coaxial line transmission transformer 5.In the frequency range of 80MHZ to 85MHZ, two change signal frequency over to and are: 81.2MHZ and 81.3MHZ, and every road input power is 5W, the input impedance of every road is 75 Ω, output impedance 75 Ω.Balance resistance R
L=150 Ω.Coaxial line transmission transformer cable SYV-75-3, L=13cm.Impedance transducer cable SYV-50-3, L=62cm.Two input adapters and out splice going splice are with 75 Ω sockets.Total losses after two-way is synthetic are less than 1.5dB.
Claims (1)
1. no resonant cavity two mixers comprise housing (1), input adapter (2) and (3) and out splice going splice (7), it is characterized in that also comprising balance resistance (4), coaxial line transmission transformer (5) and impedance transformer (6); Input adapter (2), (3) and out splice going splice (7) are contained on the housing (1); Two of balance resistance (4) terminates between input adapter (2) and (3), coaxial line transmission transformer (5) is in parallel with balance resistance (4), and an end of impedance transducer (6) is connected that the other end is connected with out splice going splice (7) on the centre tap of coaxial line transmission transformer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99231107 CN2369421Y (en) | 1999-03-10 | 1999-03-10 | Two terminal modulator without resonant cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99231107 CN2369421Y (en) | 1999-03-10 | 1999-03-10 | Two terminal modulator without resonant cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2369421Y true CN2369421Y (en) | 2000-03-15 |
Family
ID=34020038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99231107 Expired - Fee Related CN2369421Y (en) | 1999-03-10 | 1999-03-10 | Two terminal modulator without resonant cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2369421Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147827A (en) * | 2019-12-27 | 2020-05-12 | 深圳市北斗万方信息技术有限公司 | Signal processing method and device and digital video conversion equipment |
-
1999
- 1999-03-10 CN CN 99231107 patent/CN2369421Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147827A (en) * | 2019-12-27 | 2020-05-12 | 深圳市北斗万方信息技术有限公司 | Signal processing method and device and digital video conversion equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |