CN202712394U - Combiner - Google Patents
Combiner Download PDFInfo
- Publication number
- CN202712394U CN202712394U CN 201220346909 CN201220346909U CN202712394U CN 202712394 U CN202712394 U CN 202712394U CN 201220346909 CN201220346909 CN 201220346909 CN 201220346909 U CN201220346909 U CN 201220346909U CN 202712394 U CN202712394 U CN 202712394U
- Authority
- CN
- China
- Prior art keywords
- dcs
- filter
- utility
- model
- frequency band
- 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
Landscapes
- Transmitters (AREA)
Abstract
The utility model relates to a combiner, relating to improvement of a combiner structure. The combiner provided by the utility model is low in cost, small in occupation space and convenient for construction. The combiner disclosed by the utility model comprises an uplink DCS (Digital Cellular System) frequency band filter, a downlink DCS frequency band filter, a 3dB electrical bridge and two TD (Time Division) filters in the same frequency band and is structurally characterised in that both the input end of the uplink DCS frequency band filter and the input end of the downlink DCS frequency band filter are connected with a DCS antenna (ANT); the input ends of the two TD filters are respectively connected with the output end of the 3dB electrical bridge; the input end of the 3dB electrical bridge is grounded through resistance; the other end of the 3dB electrical bridge is connected with the TD antenna; both the output end of the TD filter and the output end of the downlink DCS frequency band filter are connected with a TX port; and both the output end of the other TD filter and the output end of the uplink DCS frequency band filter are connected with an RX port.
Description
Technical field
The utility model relates to the improvement of combiner structure.
Background technology
TD-SCDMA(Time Division-Synchronous Code Division Multiple Access) abbreviation of TD SDMA.The 3G (Third Generation) Moblie standard is the 3G communication standard with certain characteristic that China proposes according to years of researches.Its operating frequency is 2010MHZ～2025MHZ, and extension frequency is 1880MHZ～1920MHZ, 2300MHZ～2400MHZ.
DCS1800(Digital Cellular System at 1800MHZ), 1800MHZ Digital Cellular System.Owing to being subjected to the restriction of 900MHZ frequency, the phenomenons such as frequency is nervous, channel is not enough, and traffic density is excessive have appearred in some areas on the one hand for the proposition of DCS1800MHZ and application; Utilize on the other hand the technology such as multiple frequency multiplex mode, multilayer covering, frequency hopping to come the increase capacity, also have many limitations.Carry out traffic by the DCS1800 net and share, it moves the DCS1800 operating frequency is RX:1710MHZ～1735MHZ, TX:1805MHZ～1830MHZ.
High speed development along with Mobile Communication Industry, TD and DCS signal adopt the mode of closing road output, and existing mixer is with DCS1710MHZ～1735MHZ and TD2010MHZ～2025MHZ, 1805MHZ～1830MHZ and TD2010MHZ～2025MHZ signal, adopts respectively two mixers to close the road; Therefore, cost is high, large, construction trouble takes up room.
Summary of the invention
The utility model is exactly for the problems referred to above, provides that a kind of cost is low, mixer little, easy construction takes up room.
For achieving the above object, the utility model adopts following technical scheme, the utility model comprises that DCS uplink band filter, DCS band downlink filter, 3dB electric bridge and two are with frequency range TD filter, the input of its structural feature DCS uplink band filter input end and DCS band downlink filter all links to each other with DCS antenna (ANT), and the input of two TD filters links to each other with the output of 3dB electric bridge respectively; Input one end of 3dB electric bridge is by grounding through resistance, and the other end links to each other with the TD antenna; The output of the output of one TD filter and DCS band downlink filter all links to each other with the TX port, and the output of the output of another TD filter and DCS uplink band filter all links to each other with the RX port.
As a kind of preferred version, the resistance of resistance described in the utility model is 51 ohm.
As another kind of preferred version, DCS uplink band filter described in the utility model and DCS band downlink filter all adopt 6 resonator circuits.
Secondly, TD filter described in the utility model adopts 5 resonator circuits.
In addition, DCS uplink band filter input end described in the utility model and DCS band downlink filter input end and DCS antenna adopt direct-coupled port coupled modes.
The utility model beneficial effect: the utility model will close the road with alien frequencies and combine with frequently closing the road, and the combiner/of DCS and TD signal is realized by a kind of mixer; Therefore, the utility model cost is low, little, easy construction takes up room.
In addition, the utility model adopts the characteristic of 3dB electric bridge to realize that two are closed the road requirement with frequency range TD signal; Simultaneously 90 ° of phase-shift characterisitcs of 3dB electric bridge can allow two isolations of realizing 25dB with the output port of frequency range TD filter.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described further.The utility model protection range not only is confined to the statement of following content.
Fig. 1 is the utility model schematic block circuit diagram.
Fig. 2 is the utility model RX face cavity layout.
Fig. 3 is the utility model TX face cavity layout.
Fig. 4 is the utility model outside drawing.
Among the figure, 1 be the TD antenna interface, 2 for the interface of DCS antenna, 3 for tap, 4 for RX port, 5 for the TX port.
Embodiment
As shown in the figure, the utility model comprises that DCS uplink band filter, DCS band downlink filter, 3dB electric bridge and two are with frequency range TD filter, the input of DCS uplink band filter input end and DCS band downlink filter all links to each other with the DCS antenna, and the input of two TD filters links to each other with the output of 3dB electric bridge respectively; Input one end of 3dB electric bridge is by grounding through resistance, and the other end links to each other with the TD antenna; The output of the output of one TD filter and DCS band downlink filter all links to each other with TX port 5, and the output of the output of another TD filter and DCS uplink band filter all links to each other with RX port 4.
The ANT port of the utility model DCS is alien frequencies duplex cascade system.The ANT port of TD is with the frequency duplex structure, with the 3dB electric bridge two-way is carried out level associating road with frequency TD filter.Be output as a RX uplink port and a TX downlink port, RX port 4 is the alien frequencies duplex cascade system of DCS uplink band filter and TD filter, and TX port 5 is the alien frequencies duplex cascade system of DCS band downlink filter and TD filter.
The utility model 3dB electric bridge can use model to be the 3dB electric bridge of XC2100A-03S.
The resistance of described resistance is 51 ohm.
Described DCS uplink band filter and DCS band downlink filter all adopt 6 resonator circuits.Table look-up respectively and obtain: centre frequency is 1722.5Mhz, 1817.5Mhz, and number of resonators is 6, and bandwidth is that 29M(considers that cavity devices can produce because of variations in temperature the situation of frequency drift, Gu standard 24M bandwidth both sides are respectively increased the 2M bandwidth).
Described TD filter adopts 5 resonator circuits.Table look-up and obtain: centre frequency is 2017.5Mhz, and number of resonators is 5, and bandwidth is that 19M(considers that cavity devices can produce because of variations in temperature the situation of frequency drift, Gu standard 15M bandwidth both sides are respectively increased the 2M bandwidth).
Described DCS uplink band filter input end and DCS band downlink filter input end and DCS antenna adopt direct-coupled port coupled modes; Coupling firmly.
By the circuit simulating software Ansoft Designer with optimizational function; HFSS optimization obtains desired parameters value (tap 3 sizes, cavity resonator structure size), can reach following index:
Be understandable that, above about specific descriptions of the present utility model, only for the utility model being described and being not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection range of the present utility model.
Claims (5)
1. mixer, comprise that DCS uplink band filter, DCS band downlink filter, 3dB electric bridge and two are with frequency range TD filter, the input that it is characterized in that DCS uplink band filter input end and DCS band downlink filter all links to each other with the DCS antenna, and the input of two TD filters links to each other with the output of 3dB electric bridge respectively; Input one end of 3dB electric bridge is by grounding through resistance, and the other end links to each other with the TD antenna; The output of the output of one TD filter and DCS band downlink filter all links to each other with TX port (5), and the output of the output of another TD filter and DCS uplink band filter all links to each other with RX port (4).
2. described a kind of mixer according to claim 1, the resistance that it is characterized in that described resistance is 51 ohm.
3. described a kind of mixer according to claim 1 is characterized in that described DCS uplink band filter and DCS band downlink filter all adopt 6 resonator circuits.
4. described a kind of mixer according to claim 1 is characterized in that described TD filter adopts 5 resonator circuits.
5. described a kind of mixer according to claim 1 is characterized in that described DCS uplink band filter input end and DCS band downlink filter input end and DCS antenna adopt direct-coupled port coupled modes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220346909 CN202712394U (en) | 2012-07-18 | 2012-07-18 | Combiner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220346909 CN202712394U (en) | 2012-07-18 | 2012-07-18 | Combiner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202712394U true CN202712394U (en) | 2013-01-30 |
Family
ID=47592663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220346909 Expired - Fee Related CN202712394U (en) | 2012-07-18 | 2012-07-18 | Combiner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202712394U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147119A (en) * | 2019-12-23 | 2020-05-12 | 京信通信系统（中国）有限公司 | DAS combiner system |
-
2012
- 2012-07-18 CN CN 201220346909 patent/CN202712394U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147119A (en) * | 2019-12-23 | 2020-05-12 | 京信通信系统（中国）有限公司 | DAS combiner system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105634569B (en) | Realize control circuit, the terminal of carrier wave polymerization and WIFI double frequency MIMO | |
| CN103633400B (en) | A kind of micro-strip duplexer based on electromagnetism hybrid coupled | |
| CN203826527U (en) | T&C&G&D /LTE/WCDMA/TD septuple frequency combiner | |
| CN103187600B (en) | Dual-mode three-way wide-band filter based on multi-branch loaded square resonance ring | |
| US20220238976A1 (en) | Combiner | |
| CN203521566U (en) | A dual-frequency high intermodulation waterproof combiner | |
| CN201868547U (en) | Double-system combiner | |
| CN205104595U (en) | Double -frequency combiner | |
| CN203826528U (en) | 640-1850 MHz /WCDMA/LTE triple frequency combiner | |
| CN101950826B (en) | Square annular defected ground structure microwave dual-mode band-pass filter | |
| CN207052733U (en) | A kind of POI (Point Of Interface) for subway communication | |
| CN202712394U (en) | Combiner | |
| CN204834813U (en) | Three frequency combiners of G&DTDF&TDATDE | |
| CN204067532U (en) | A kind of double frequency band-pass filter based on defect microstrip line | |
| CN205543172U (en) | GSM&DCS&TDA&TDF&TDE&TDDWLAN dual -port combiner | |
| CN201608264U (en) | GSM/DCS/TD (AB)/WLAN four-frequency combiner | |
| CN202196843U (en) | Multiplexer multi-system module | |
| CN201332130Y (en) | DCS1800/PHS double-frequency mixer | |
| CN203013896U (en) | WLAN and 2G+3G double frequency combiner | |
| CN210430042U (en) | Dual-mode dual-frequency coaxial cavity filter | |
| CN201673991U (en) | CDMA/GSM/WLAN three-frequency mixer | |
| CN201797031U (en) | Double-frequency combiner | |
| CN202888368U (en) | Quad-band combiner | |
| CN202111203U (en) | Six-frequency combiner | |
| CN204885379U (en) | Three mould bi -pass area microstrip filters with wide passband |
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: 20130130 Termination date: 20210718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |