CN201430587Y - Built-in isolator-type duplexer - Google Patents
Built-in isolator-type duplexer Download PDFInfo
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- CN201430587Y CN201430587Y CN2009200427552U CN200920042755U CN201430587Y CN 201430587 Y CN201430587 Y CN 201430587Y CN 2009200427552 U CN2009200427552 U CN 2009200427552U CN 200920042755 U CN200920042755 U CN 200920042755U CN 201430587 Y CN201430587 Y CN 201430587Y
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- duplexer
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- isolator
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Abstract
The utility model relates to a built-in isolator-type duplexer, which comprises a medium duplexer (18), wherein the medium duplexer (18) is provided with a transmitting terminal (8), a receiving terminal (9) and an antenna terminal (10), and is characterized in that the transmitting terminal (8) of the medium duplexer (18) is serially connected with a micro-strip isolator (17), and the conductiondirection of the micro-strip isolator (17) is consistent with that from the transmitting terminal (8) of the medium duplexer (18) to the antenna terminal (10). The scheme relates to the duplexer whichis applicable to a transceiver of equipment such as mobile communication base station, repeaters and the like, and the duplexer can improve the impedance matching performance of a signaling port froma signal which is reflected in an interface of the duplexer and an external signal which reversely flows from an antenna port, reduce the distortion of a transmitting channel and can solve the problems caused by the external reverse-flow signal and the internal reflection signal which backflows to the transmitting channel.
Description
Technical field
The utility model relates to moving communicating field, particularly the duplexer that uses in the device transceiver such as mobile communication base station, repeater.The signal that this duplexer can reflect from the duplexer interface and from the external signal of antenna port adverse current improves the impedance matching performance of the port of posting a letter, and reduces the distortion factor of transmission path.
Background technology
The mobile communication base station is in certain area of radio coverage, believes the radio station by the transceiving that the information of carrying out between mobile switching center and the mobile telephone terminal is transmitted.As shown in Figure 1, present mobile communication base station mainly is made up of antenna 16, duplexer 11, transtation mission circuit 12 and receiving circuit 13 etc., wherein, the effect of duplexer 11 is isolated with transmitting and receiving signal, make transtation mission circuit 12 and the receiving circuit 13 can a shared antenna 16, guarantee to receive and emission operate as normal simultaneously.Duplexer 11 is made up of the band pass filter of two groups of different frequencies usually, and wherein one group of band pass filter is used to transmit, and another group band pass filter is used for received signal.Duplexer 11 has the port of posting a letter TX, collection of letters port RX and antenna port, and antenna port is used to connect antenna 16, and collection of letters port RX is used to connect receiving circuit 13, and the port TX that posts a letter is used to connect transtation mission circuit 12.After signal process band pass filter 14 filtering that transtation mission circuit 12 produces, deliver to power amplifier 15 and amplify, then amplifying signal is sent into the port TX that posts a letter of duplexer 11, finally send from antenna 16.It is comparatively single to send the relative received signal of signal, for transmission path, generally require duplexer 11 post a letter port TX to antenna port can only be by sending signal, and the signal that from duplexer 11 interfaces, reflects in the real work (see Fig. 1 duplexer 11 post a letter the small arrow of port TX) and may reflux from the port TX that posts a letter from the external signal (seeing the small arrow of figure duplexer 11 antenna ports) that the antenna port adverse current is gone into, unnecessary intermodulation phenomena just takes place if these phenomenon power amplifier 15 ports take place, reduce the system linearity characteristic, the result causes communication performance to reduce, and the distortion factor raises.Therefore, how to cut off the signal that from the duplexer interface, reflects and be the problem of the utility model research from the external signal of antenna port adverse current.
Summary of the invention
The utility model provides a kind of built-in isolation type duplexer, purpose is will block the signal that reflects and from the external signal of antenna port adverse current from the duplexer interface, improve the impedance matching performance of the port of posting a letter, reduce the distortion factor of transmission path, solve outside adverse current signal and internal reflection signal and be back to the problem that transmission path brings.
For achieving the above object, the technical solution adopted in the utility model is: a kind of built-in isolation type duplexer, comprise a dielectric duplexer, this dielectric duplexer has one and sends terminal, a reception terminal and an antenna terminal, in order to block the signal that from the duplexer interface, reflects and from the external signal of antenna port adverse current, transmitting terminal substring at described dielectric duplexer connects a microstrip isolator, the conducting direction of this microstrip isolator is consistent to the conducting direction of antenna terminal with dielectric duplexer transmission terminal, constitutes built-in isolation type duplexer with this.
Related content in the technique scheme is explained as follows:
1, in the such scheme, described " dielectric duplexer " also claims " dielectric diplexer " or " ceramic dielectric duplexer ".Dielectric duplexer utilize low-loss, high-k, frequency-temperature coefficient and the thermal coefficient of expansion of medium ceramic material little, can bear that characteristics such as high power design and produce.In fact dielectric duplexer is made up of the dielectric filter of two groups of different frequencies, and one group is used to transmit, and another group is used for received signal, and guaranteeing to receive and launch can both the while operate as normal.Dielectric duplexer has one and sends terminal, a reception terminal and an antenna terminal, sends terminal and is used to connect transtation mission circuit, receives terminal and is used to connect receiving circuit, and antenna terminal is used to connect common antenna.
2, in the such scheme, described " microstrip isolator " belongs to the micro-filtration ferrite device, also claims by " microwave isolator " or " microwave ferrite isolator ".It has the characteristic of unidirectional conducting, and promptly the electromagnetic wave attenuation to a direction transmission is very little, and very big to the electromagnetic wave attenuation of rightabout transmission.
The utility model principle and effect: in order to block the signal that from the duplexer interface, reflects and, connect a microstrip isolator at the transmitting terminal substring of dielectric duplexer and constitute a built-in isolation type duplexer from the external signal of antenna port adverse current.In the work, utilize the unidirectional conduction of microstrip isolator, what transtation mission circuit produced transmits and can send from antenna by microstrip isolator smoothly, and the reflected signal that produces in the duplexer interface and all be blocked and isolate from the external signal of antenna port adverse current.As shown in Figure 2, the post a letter small arrow of port band " * " of duplexer 18 represents that the reflected signal that produces in the duplexer interface is blocked and isolates; The small arrow of duplexer 18 antenna port bands " * " is represented to be blocked and to isolate from the external signal of antenna port adverse current.Because the signal that from the duplexer interface, reflects and all be blocked and isolate from the external signal of antenna port adverse current; improve the impedance matching performance of the port of posting a letter; reduce the distortion factor of transmission path; the more effective error of having improved tonequality and minimise data transmission; in addition; isolate the performance that the backflow signal can also be protected power amplifier and improve system, therefore have in the mobile communication base station of key property and the media and be extensive use of at the port of posting a letter.
Description of drawings
Accompanying drawing 1 is existing mobile communication base station schematic diagram;
Accompanying drawing 2 is the utility model mobile communication base station schematic diagram;
Accompanying drawing 3 is the utility model dielectric duplexer structural representation;
Accompanying drawing 4 is the utility model microstrip isolator schematic diagram.
In the above accompanying drawing: 1, medium block; 2, through hole; 3, outer conductor layer; 4, inner conductor layer; 5, short circuit face; 6, open surface; 7, local conductor layer; 8, send terminal; 9, receive terminal; 10, antenna terminal; 11, dielectric duplexer; 12, transtation mission circuit; 13, receiving circuit; 14, band pass filter; 15, amplifier; 16, antenna; 17, microstrip isolator; 18, " Y " shape coupling match circuit; 19, metal goes in ring and ties; 20, matched load; 21, first microstrip line; 22, second microstrip line; 23, the 3rd microstrip line.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: a kind of built-in isolation type duplexer, shown in the frame of broken lines among Fig. 2, this built-in isolation type duplexer is made up of a dielectric duplexer 18 and a microstrip isolator 17.Dielectric duplexer 18 has one and sends terminal 8, one and receive terminal 9 and an antenna terminal 10, microstrip isolator 17 is serially connected on the transmission terminal 8 of dielectric duplexer 18, and the conducting direction of this microstrip isolator 17 is consistent to the conducting direction of antenna terminal 10 with dielectric duplexer 18 transmission terminals 8.
The structure of described dielectric duplexer 18 has an integral type medium block 1 that is made of ceramic material as shown in Figure 3, offers row's through hole 2 on this medium block 1, the parallel axes of described row's through hole 2, arranged side by side; On the inner surface of each through hole 2, be provided with the coat of metal and form inner conductor layer 4, be provided with the coat of metal on medium block 1 outer surface of through hole 2 axis and form outer conductor layer 3 being parallel to, on medium block 1 outer surface of through hole 2 one ends (referring to rear end face) be provided with the coat of metal and form short circuit face 5, this short circuit face 5 makes the inner conductor layer 4 in the through hole 2 be connected with outer conductor layer 3 on the medium block 1, and medium block 1 outer surface (referring to front end face) of through hole 2 other ends is as open surface 6, corresponding each through hole 2 is provided with printed circuit as local conductor layer 7, described transmission terminal 8 on this open surface 6, receiving terminal 9 and antenna terminal 10 is located on the open surface 6.
Described microstrip isolator 17 is formed (owing to being that prior art does not provide diagram) by ferrite substrate, potsherd, compensating plate and permanent magnet sheet, described ferrite substrate upper surface is printed with " Y " shape coupling match circuit 24, as shown in Figure 4, described " Y " shape coupling match circuit 24 by metal go in ring 19 and three of knots around metal go in ring knot 19 mutually the microstrip lines evenly arranged of folder hexagonal angles constitute, at folded successively from the bottom up potsherd, compensating plate and the permanent magnet sheet established of the upper surface of ferrite substrate; In three microstrip lines of described " Y " shape coupling match circuit 24, signal input part A is established in first microstrip line 21 outer end, and signal output part B is established in second microstrip line 22 outer end, and the 3rd microstrip line 23 outer end C connect matched load 20.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection range of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the present utility model.
Claims (3)
1, a kind of built-in isolation type duplexer, comprise a dielectric duplexer (18), this dielectric duplexer (18) has one and sends terminal (8), one and receive a terminal (9) and an antenna terminal (10), it is characterized in that: at transmission terminal (a 8) serial connection microstrip isolator (17) of described dielectric duplexer (19), the conducting direction of this microstrip isolator (17) is consistent to the conducting direction of antenna terminal (10) with dielectric duplexer (18) transmission terminal (8), constitutes built-in isolation type duplexer with this.
2, built-in isolation type duplexer according to claim 1, it is characterized in that: described dielectric duplexer (18) has an integral type medium block (1) that is made of ceramic material, on this medium block (1), offer row's through hole (2), the parallel axes of described row's through hole (2), arranged side by side; On the inner surface of each through hole (2), be provided with the coat of metal and form inner conductor layer (4), be provided with the coat of metal on medium block (1) outer surface of through hole (2) axis and form outer conductor layer (3) being parallel to, on medium block (1) outer surface of through hole (2) one ends, be provided with the coat of metal and form short circuit face (5), this short circuit face (5) makes the inner conductor layer (4) in the through hole (2) be connected with outer conductor layer (3) on the medium block (1), and medium block (1) outer surface of through hole (2) other end is as open surface (6), this open surface (6) is gone up corresponding each through hole (2) and is provided with printed circuit as local conductor layer (7), described transmission terminal (8), receiving terminal (9) and antenna terminal (10) is located on the open surface (6).
3, built-in isolation type duplexer according to claim 1, it is characterized in that: described microstrip isolator (17) is made up of ferrite substrate, potsherd, compensating plate and permanent magnet sheet, described ferrite substrate upper surface is printed with " Y " shape coupling match circuit (24), described " Y " shape coupling match circuit (24) is pressed from both sides the microstrip line that hexagonal angle evenly arranges mutually and constitutes around the metal knot (19) that goes in ring by go in ring knot (19) and three of metal, at folded successively from the bottom up potsherd, compensating plate and the permanent magnet sheet established of the upper surface of ferrite substrate; In three microstrip lines of described " Y " shape coupling match circuit (24), signal input part is established in first microstrip line (21) outer end, and signal output part is established in second microstrip line (22) outer end, the 3rd microstrip line (23) outer termination matched load (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200427552U CN201430587Y (en) | 2009-06-05 | 2009-06-05 | Built-in isolator-type duplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200427552U CN201430587Y (en) | 2009-06-05 | 2009-06-05 | Built-in isolator-type duplexer |
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| Publication Number | Publication Date |
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| CN201430587Y true CN201430587Y (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009200427552U Expired - Fee Related CN201430587Y (en) | 2009-06-05 | 2009-06-05 | Built-in isolator-type duplexer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185621A (en) * | 2011-03-11 | 2011-09-14 | 深圳市华信天线技术有限公司 | Antenna shifting device and signal receiving equipment |
| CN102544647A (en) * | 2011-12-23 | 2012-07-04 | 成都泰格微波技术股份有限公司 | Waveguide isolated duplex integrated component |
| WO2013063840A1 (en) * | 2011-10-31 | 2013-05-10 | 武汉凡谷电子技术股份有限公司 | Waveguide diplexer of integrated waveguide isolator |
| CN103490834A (en) * | 2013-09-17 | 2014-01-01 | 东莞宇龙通信科技有限公司 | System for restraining intermodulation interference and communication device |
| CN111245453A (en) * | 2020-01-16 | 2020-06-05 | 惠州Tcl移动通信有限公司 | Radio frequency structure and mobile terminal |
-
2009
- 2009-06-05 CN CN2009200427552U patent/CN201430587Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185621A (en) * | 2011-03-11 | 2011-09-14 | 深圳市华信天线技术有限公司 | Antenna shifting device and signal receiving equipment |
| WO2013063840A1 (en) * | 2011-10-31 | 2013-05-10 | 武汉凡谷电子技术股份有限公司 | Waveguide diplexer of integrated waveguide isolator |
| CN102544647A (en) * | 2011-12-23 | 2012-07-04 | 成都泰格微波技术股份有限公司 | Waveguide isolated duplex integrated component |
| WO2013091258A1 (en) * | 2011-12-23 | 2013-06-27 | 成都泰格微波技术股份有限公司 | Waveguide isolated duplex integrated component |
| CN102544647B (en) * | 2011-12-23 | 2014-03-26 | 成都泰格微波技术股份有限公司 | Waveguide isolated duplex integrated component |
| CN103490834A (en) * | 2013-09-17 | 2014-01-01 | 东莞宇龙通信科技有限公司 | System for restraining intermodulation interference and communication device |
| CN103490834B (en) * | 2013-09-17 | 2016-05-04 | 东莞宇龙通信科技有限公司 | Suppress system and the communicator of Intermodulation Interference |
| CN111245453A (en) * | 2020-01-16 | 2020-06-05 | 惠州Tcl移动通信有限公司 | Radio frequency structure and mobile terminal |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20140605 |