CN201091070Y - Radio frequency unit of 23GHz PDH digital microwave outdoor unit - Google Patents
Radio frequency unit of 23GHz PDH digital microwave outdoor unit Download PDFInfo
- Publication number
- CN201091070Y CN201091070Y CNU2007201872243U CN200720187224U CN201091070Y CN 201091070 Y CN201091070 Y CN 201091070Y CN U2007201872243 U CNU2007201872243 U CN U2007201872243U CN 200720187224 U CN200720187224 U CN 200720187224U CN 201091070 Y CN201091070 Y CN 201091070Y
- Authority
- CN
- China
- Prior art keywords
- detail
- unit
- radio frequency
- frequency
- digital microwave
- 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
Links
Images
Abstract
The utility model discloses a radio frequency transmitting unit of a 23 GHz PDH digital microwave outdoor unit, comprising a radio frequency transmitting unit, a radio frequency receiving unit and a radio frequency local oscillator unit. The radio frequency local oscillator unit comprises a plurality of independent chambers; the adjacent chambers are communicated with each other through grooves; each independent chamber is provided with separate circuit modules, such as PLL circuit modules, VCO modules, radio frequency amplifier modules, N-time frequency circuit modules and filter modules; the circuit modules in different chambers are electrically connected with each other through grooves. The utility model can be applied to 23 GHz PDH digital microwave outdoor units and also can be used in other digital microwave products. The digital microwave outdoor unit containing the radio frequency unit has circuit anti-electromagnetic interference ability, simple structure and smaller size.
Description
Technical field
The utility model relates to a kind of digital microwave telecommunication technology, relates in particular to the outdoor unit of a kind of radio frequency unit and digital microwave.
Background technology
In radio communication, particularly in digital microwave telecommunication, often need to use radio frequency unit.
Radio frequency unit complex structure of the prior art, circuit poor anti jamming capability.
Summary of the invention
The purpose of this utility model provides a kind of radio frequency unit and outdoor unit thereof of simple in structure, 23GHz PDH digital microwave that the circuit anti-electromagnetic interference capability is strong.
The purpose of this utility model is achieved through the following technical solutions:
The radio frequency unit of 23GHz PDH digital microwave of the present utility model, comprise radio frequency bill unit, radio frequency receipts unit, radio-frequency (RF) local oscillator unit, described radio-frequency (RF) local oscillator unit comprises that radio frequency is sent out the local oscillator unit, radio frequency is received the local oscillator unit, it is characterized in that, described radio-frequency (RF) local oscillator unit comprises a plurality of independently cavitys, pass through the mutual UNICOM of groove between the adjacent cavity, be respectively equipped with independent circuit module in described a plurality of independently cavity, be electrically connected mutually by described groove between the circuit module in the different cavitys; Described circuit module comprises one or more in the following circuit module:
Phase-locked loop circuit module, voltage-control oscillator module, radio frequency amplifier module, N frequency multiplier circuit module, filter module;
The length of described radio-frequency (RF) local oscillator unit is smaller or equal to 140mm, and width is smaller or equal to 51mm.
The outdoor unit of 23GHz PDH digital microwave of the present utility model, the radio frequency unit that comprises above-mentioned 23GHz PDH digital microwave, also comprise control unit, duplexer, intermediate frequency unit, described intermediate frequency unit comprises dielectric filter, and the centre frequency of described dielectric filter is 1542MHz or 1715MHz.
The technical scheme that is provided by above-mentioned the utility model as can be seen, the radio frequency unit and the outdoor unit thereof of 23GHz PDH digital microwave described in the utility model, because the radio-frequency (RF) local oscillator unit comprises a plurality of independently cavitys, pass through the mutual UNICOM of groove between the adjacent cavity, be respectively equipped with independent circuit module in a plurality of independently cavitys, be electrically connected mutually by described groove between the circuit module in the different cavitys.Simple in structure, the circuit anti-electromagnetic interference capability is strong.
Description of drawings
Fig. 1 is the theory diagram of the outdoor unit of the utility model digital microwave;
Fig. 2 is digital microwave high station, low station schematic diagram;
Fig. 3 is the cloth version schematic diagram that radio frequency is received the specific embodiment of unit in the utility model;
Fig. 4 is the structural representation that radio frequency is received the specific embodiment of the mirror filter in the unit in the utility model;
Fig. 5 is the cloth version schematic diagram of the specific embodiment of radio frequency bill unit in the utility model;
Fig. 6 is the theory diagram of radio-frequency (RF) local oscillator unit in the utility model.
Embodiment
The outdoor unit of the utility model 23GHz PDH digital microwave, its preferable embodiment as shown in Figure 1, be the outdoor unit of 23GHz PDH (PDH (Pseudo-synchronous Digital Hierarchy) Plesiochronous Digital Hierarchy) digital microwave, the signal that comes from indoor unit at first passes through control unit; Link to each other with intermediate frequency unit after treatment; Intermediate frequency unit will be received and dispatched intermediate frequency separately.Sending out intermediate frequency directly is modulated on the local oscillator; Sending out local oscillation signal launches through too high power amplifier and duplexer.The 23GHz PDH digital microwave signal that receives enters LNA through duplexer, enters frequency mixer then and receives the local oscillation signal mixing, and the receipts intermediate frequency that mixing is come out enters intermediate frequency unit, enters indoor unit through control unit then.
Intermediate frequency unit comprises dielectric filter, and the centre frequency of dielectric filter is 1542MHz or 1715MHz.
The outdoor unit of the utility model digital microwave is not limited to the outdoor unit of 23GHz PDH digital microwave, also can be the outdoor unit of the digital microwave of other frequency.
Comprise radio frequency unit in the outdoor unit of above-mentioned 23GHz PDH digital microwave, radio frequency unit comprises radio frequency bill unit, radio frequency receipts unit, radio-frequency (RF) local oscillator unit.Wherein, radio frequency bill unit comprises high power amplifier (high power amplifier); Radio frequency is received the unit and is comprised low noise amplifier (LNA), can also comprise mirror filter, frequency mixer, intermediate-frequency filter and intermediate frequency amplifier etc.; The radio-frequency (RF) local oscillator unit comprises to be sent out local oscillator and receives local oscillator.
As shown in Figure 2, the outdoor unit of 23GHz PDH digital microwave of the present utility model, one of 23GHz PDH digital microwave is jumped and is made up of a high station and a low station.Described high station is meant that tranmitting frequency is higher than the digital microwave relay station of receive frequency; Described low station is meant that tranmitting frequency is lower than the digital microwave relay station of receive frequency.
As shown in Figure 3, radio frequency in the utility model is received the unit, the digital microwave signal that receives changes optical waveguide probe 32 from waveguide 31 through little band and enters low noise amplifier 33, enter frequency mixer 35 through mirror filter 34 then, carry out mixing with the receipts local oscillation signal, the receipts intermediate-freuqncy signal that mixing is come out enters intermediate frequency unit through intermediate-frequency filter 36 and intermediate frequency amplifier.
Radio frequency is received the specific embodiment of unit, and total length is 52mm, and width is 33mm.Radio frequency is received inside, unit and is comprised three cavitys.Can make radio frequency receive the length of unit external dimensions smaller or equal to 52mm; Width is smaller or equal to 33mm.
As shown in Figure 4, the mirror filter in the utility model, in the receiving system of digital microwave equipment, need be with the image signal filtering, to improve the noiseproof feature of receiving system.Mirror filter is made up of the microstrip line that is printed on the radio frequency sheet material.The microstrip line that comprises main line (main transmission line) 6 and four root termination open circuit is formed, and these four microstrip lines are respectively first detail 7, second detail 8, the 3rd detail 9 and the 4th detail 10.Wherein, first detail 7 and second detail 8 can be set in parallel in a side of main line 6, long and wide can be identical; The 3rd detail 9 and the 4th detail 10 can be set in parallel in the opposite side of main line 6, long and wide can be identical.Four microstrip lines can be vertical with main line 6, and first detail 7 and the 3rd detail 9 can overlap at the center line of vertical direction; Second detail 8 and the 4th detail 10 can overlap at the center line of vertical direction.Main transmission line is the microstrip line of 50 ohm of impedances.
The radio frequency of low station is received the specific embodiment of employed mirror filter in the unit, and the width of main line between the 0.65mm, can be 0.55mm etc. at 0.45mm; The length of first detail and second detail be at 2.11mm between the 2.51mm, can be 2.31mm etc.; The width of first detail and second detail be at 0.15mm between the 0.35mm, can be 0.25mm etc.; The length of the 3rd detail and the 4th detail be at 0.94mm between the 1.34mm, can be 1.14mm etc.; The width of the 3rd detail and the 4th detail be at 0.52mm between the 0.72mm, can be 0.62mm etc.; Distance between first detail and second detail be at 1.87mm between the 2.27mm, can be 2.07mm etc.As required, also can be other size.
The radio frequency of high station is received the specific embodiment of employed mirror filter in the unit, the width of main line at 0.45mm between the 0.65mm; The length of first detail and second detail is between the 2.56mm at 2.16mm; The width of first detail and second detail is between the 0.73mm at 0.53mm; The length of the 3rd detail and the 4th detail is between the 1.45mm at 1.05mm; The width of the 3rd detail and the 4th detail is between the 0.85mm at 0.65mm; Distance between first detail and second detail is between the 2.18mm at 1.78mm.The width of concrete main line can be 0.55mm; The length of first detail and second detail can be 2.36mm; The width of first detail and second detail can be 0.63mm; The length of the 3rd detail and the 4th detail can be 1.25mm; The width of the 3rd detail and the 4th detail can be 0.75mm; Distance between first detail and second detail can be 1.98mm etc.It also can be other size.
The above-mentioned base material that microstrip circuit adopted can be the thick radio frequency sheet material of 0.3mm, or other radio frequency sheet material.
As shown in Figure 5, be the cloth domain of the specific embodiment of radio frequency bill unit, the emission frequency signal from a local oscillator is come through behind the high power amplifier 51, enters waveguide 31 through little band commentaries on classics optical waveguide probe 32 again and launches.
The specific embodiment of radio frequency bill unit, the total length of radio frequency bill unit is 52.5mm, width is 22.5mm.The length of internal cavity is smaller or equal to 41mm in the radio frequency bill unit; Width also can be other size smaller or equal to 16.5mm as required.
As shown in Figure 6, the radio-frequency (RF) local oscillator unit can comprise following circuit module: digital PLL circuit, voltage-controlled oscillator circuit, first radio frequency amplifying circuit, N frequency multiplier circuit, rf filtering circuit, second radio frequency amplifying circuit,
As required, the radio-frequency (RF) local oscillator unit can comprise one or more in the foregoing circuit module, is linked in sequence between the polylith circuit module.
A plurality of independently cavitys can be set in the fabric swatch of radio-frequency (RF) local oscillator unit, pass through the mutual UNICOM of groove between the adjacent cavity, be respectively equipped with independent circuit module in a plurality of independently cavitys, be electrically connected mutually by groove between the circuit module in the different cavitys, can reduce the phase mutual interference between each circuit module, simple in structure, the circuit anti-electromagnetic interference capability is strong.
The length of radio-frequency (RF) local oscillator unit can be smaller or equal to 140mm, and width can be smaller or equal to 51mm.
Link to each other by radio frequency cable between radio-frequency (RF) local oscillator unit and the radio frequency bill unit; Radio-frequency (RF) local oscillator unit and radio frequency are received between the unit and are linked to each other by radio frequency cable.
The utility model can be applied in the outdoor unit of 23GHz PDH digital microwave, also can be applied in other the digital microwave product.Make the ability of circuit anti-electromagnetic interference capability, electromagnetic compatibility all strengthen greatly; And structure is simpler, compacter, volume is littler.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.
Claims (10)
1. the radio frequency unit of a 23GHz PDH digital microwave, comprise radio frequency bill unit, radio frequency receipts unit, radio-frequency (RF) local oscillator unit, described radio-frequency (RF) local oscillator unit comprises that radio frequency is sent out the local oscillator unit, radio frequency is received the local oscillator unit, it is characterized in that, described radio-frequency (RF) local oscillator unit comprises a plurality of independently cavitys, by the mutual UNICOM of groove, be respectively equipped with independent circuit module in described a plurality of independently cavitys between the adjacent cavity, be electrically connected mutually by described groove between the circuit module in the different cavitys; Described circuit module comprises one or more in the following circuit module:
Phase-locked loop circuit module, voltage-control oscillator module, radio frequency amplifier module, N frequency multiplier circuit module, filter module;
The length of described radio-frequency (RF) local oscillator unit is smaller or equal to 140mm, and width is smaller or equal to 51mm.
2. the radio frequency unit of 23GHz PDH digital microwave according to claim 1, described radio frequency bill unit comprises high power amplifier, described high power amplifier changes optical waveguide probe by microstrip line, little band and is connected with waveguide, it is characterized in that the length of the first external dimensions of described radio frequency bill is smaller or equal to 52.5mm; Width is smaller or equal to 22.5mm.
3. the radio frequency unit of 23GHz PDH digital microwave according to claim 2 is characterized in that, the length of the internal cavity of described radio frequency bill unit is smaller or equal to 41mm; Width is smaller or equal to 16.5mm.
4. the radio frequency unit of 23GHz PDH digital microwave according to claim 1, it is characterized in that, described radio frequency is received the unit and is comprised low noise amplifier, mirror filter, frequency mixer, connect successively by microstrip line between described low noise amplifier, mirror filter, the frequency mixer, described low noise amplifier changes optical waveguide probe by microstrip line, little band and is connected with waveguide, and described radio frequency is received the length of unit external dimensions smaller or equal to 52mm; Width is smaller or equal to 33mm.
5. the radio frequency unit of 23GHz PDH digital microwave according to claim 4 is characterized in that, described radio frequency is received inside, unit and is divided into three cavitys.
6. the radio frequency unit of 23GHz PDH digital microwave according to claim 4 is characterized in that described mirror filter comprises main line, be connected with the microstrip line of 4 one end open circuits on the described main line, be respectively first detail, second detail, the 3rd detail, the 4th detail, wherein
Described first detail and second detail are set in parallel in a side of described main line; Described the 3rd detail and the 4th detail are set in parallel in the opposite side of described main line;
The central lines of described first detail and the 3rd detail; The central lines of described second detail and the 4th detail.
7. the radio frequency unit of 23GHz PDH digital microwave according to claim 6 is characterized in that, the width of the main line of described mirror filter is 0.45mm～0.65mm; The length of first detail and second detail is between the 2.51mm at 2.11mm; The width of first detail and second detail is between the 0.35mm at 0.15mm; The length of the 3rd detail and the 4th detail is between the 1.34mm at 0.94mm; The width of the 3rd detail and the 4th detail is between the 0.72mm at 0.52mm; Distance between first detail and second detail is between the 2.27mm at 1.87mm.
8. the radio frequency unit of 23GHz PDH digital microwave according to claim 6 is characterized in that, the width of the main line of described mirror filter is 0.45mm～0.65mm; The length of first detail and second detail is between the 2.56mm at 2.16mm; The width of first detail and second detail is between the 0.73mm at 0.53mm; The length of the 3rd detail and the 4th detail is between the 1.45mm at 1.05mm; The width of the 3rd detail and the 4th detail is between the 0.85mm at 0.65mm; Distance between first detail and second detail is between the 2.18mm at 1.78mm.
9. the radio frequency unit of 23GHz PDH digital microwave according to claim 1 is characterized in that, links to each other by radio frequency cable between described radio-frequency (RF) local oscillator unit and the described radio frequency bill unit; Described radio-frequency (RF) local oscillator unit and described radio frequency are received between the unit and are linked to each other by radio frequency cable.
10. the outdoor unit of a 23GHz PDH digital microwave, it is characterized in that, the radio frequency unit that comprises the described 23GHz PDH of claim 1 to 9 digital microwave, also comprise control unit, duplexer, intermediate frequency unit, described intermediate frequency unit comprises dielectric filter, and the centre frequency of described dielectric filter is 1542MHz or 1715MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201872243U CN201091070Y (en) | 2007-12-18 | 2007-12-18 | Radio frequency unit of 23GHz PDH digital microwave outdoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201872243U CN201091070Y (en) | 2007-12-18 | 2007-12-18 | Radio frequency unit of 23GHz PDH digital microwave outdoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201091070Y true CN201091070Y (en) | 2008-07-23 |
Family
ID=39862825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201872243U Expired - Fee Related CN201091070Y (en) | 2007-12-18 | 2007-12-18 | Radio frequency unit of 23GHz PDH digital microwave outdoor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201091070Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834625A (en) * | 2010-04-23 | 2010-09-15 | 华为技术有限公司 | Loop back method for radio frequency signal and outdoor unit |
| CN104467883A (en) * | 2014-12-15 | 2015-03-25 | 科大智能（合肥）科技有限公司 | General type 12.7-13.4 GHz full outdoor broadband IP digital microwave radio frequency unit |
| CN104901714A (en) * | 2015-06-17 | 2015-09-09 | 成都前锋电子仪器有限责任公司 | Radio frequency local oscillator module structure |
-
2007
- 2007-12-18 CN CNU2007201872243U patent/CN201091070Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834625A (en) * | 2010-04-23 | 2010-09-15 | 华为技术有限公司 | Loop back method for radio frequency signal and outdoor unit |
| CN101834625B (en) * | 2010-04-23 | 2012-03-21 | 华为技术有限公司 | Loop back method for radio frequency signal and outdoor unit |
| US8995309B2 (en) | 2010-04-23 | 2015-03-31 | Huawei Technologies Co., Ltd. | Radio frequency signal loopback method and outdoor unit |
| CN104467883A (en) * | 2014-12-15 | 2015-03-25 | 科大智能（合肥）科技有限公司 | General type 12.7-13.4 GHz full outdoor broadband IP digital microwave radio frequency unit |
| CN104467883B (en) * | 2014-12-15 | 2017-01-18 | 科大智能（合肥）科技有限公司 | General type 12.7-13.4 GHz full outdoor broadband IP digital microwave radio frequency unit |
| CN104901714A (en) * | 2015-06-17 | 2015-09-09 | 成都前锋电子仪器有限责任公司 | Radio frequency local oscillator module structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sagawa et al. | Miniaturized hairpin resonator filters and their application to receiver front-end MICs | |
| Gómez-García et al. | Avoiding RF isolators: Reflectionless microwave bandpass filtering components for advanced RF front ends | |
| CN102394568B (en) | W-band broadband mixer | |
| CN110943711B (en) | Duplexer and electronic equipment | |
| CN103762979B (en) | Broadband frequency source for LTE channel simulator | |
| CN201150060Y (en) | Radio frequency unit of 18GHz PDH digital microwave outdoor unit | |
| TW200410506A (en) | Wireless communication circuit architecture | |
| CN201091070Y (en) | Radio frequency unit of 23GHz PDH digital microwave outdoor unit | |
| CN202798692U (en) | Eight GHz fully outdoor internet protocol (IP) digital microwave unit and radio frequency unit thereof | |
| CN201134491Y (en) | Probe converting microstrip to wave-guide, amplifier and digital microwave outdoor unit | |
| CN204927464U (en) | Ultra wide band communication transmitter and super broad band filter thereof | |
| CN201430587Y (en) | Built-in isolator-type duplexer | |
| CN201167322Y (en) | 23GHz SDH radio frequency unit and digital microwave outdoor unit | |
| CN201104354Y (en) | Radio frequency unit of 26GHz PDH digital microwave outdoor unit | |
| CN107222221A (en) | A kind of radio circuit and electronic equipment | |
| CN201091072Y (en) | Radio frequency unit of 38 GHz PDH digital microwave outdoor unit | |
| CN107834137B (en) | Duplexer and transceiving shared millimeter wave array antenna | |
| CN201167320Y (en) | 5.8GHz PDH digital microwave radio frequency unit and outdoor unit | |
| CN201167315Y (en) | 18GHz SDH digital microwave radio frequency unit and outdoor unit | |
| CN205248407U (en) | Waveguide filter and wave band transmitter | |
| CN201167321Y (en) | 7-8GHz PDH digital microwave radio frequency unit and outdoor unit | |
| CN111129673B (en) | LCP (liquid Crystal display wafer) process-based ultra-wideband band-pass filter | |
| CN201146505Y (en) | 13 GHz PDH microwave transmitting and receiving equipment as well as outdoor unit thereof | |
| CN201167323Y (en) | 7-15GHz SDH digital microwave radio frequency unit and outdoor unit | |
| CN105470605A (en) | Waveguide filter and wave band transmitter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Jie Jie communication equipment Limited by Share Ltd Assignor: Beijing Skyway Technologies Co., Ltd. Contract fulfillment period: 2008.10.27 to 2013.10.26 Contract record no.: 2008110000090 Denomination of utility model: Radio frequency unit of 23GHz PDH digital microwave outdoor unit Granted publication date: 20080723 License type: Exclusive license Record date: 20081103 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.27 TO 2013.10.26; CHANGE OF CONTRACT Name of requester: BEIJING DIJIE COMMUNICATION EQUIPMENT CO., LTD. Effective date: 20081103 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20121218 |