CN201042010Y - Broad frequency band feeder - Google Patents
Broad frequency band feeder Download PDFInfo
- Publication number
- CN201042010Y CN201042010Y CNU2007200529839U CN200720052983U CN201042010Y CN 201042010 Y CN201042010 Y CN 201042010Y CN U2007200529839 U CNU2007200529839 U CN U2007200529839U CN 200720052983 U CN200720052983 U CN 200720052983U CN 201042010 Y CN201042010 Y CN 201042010Y
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Abstract
The utility model discloses a broad-band feed used for feed between a tower mounted amplifier and a base station. The broad-band feed comprises a radio frequency port providing interfaces for input and output of radio frequency signals of the base station; a direct-current port providing with interfaces for input and output of control signals of a direct-current power supply and a antenna feed system; a joining port for providing interfaces for outputting joined signals of the radio frequency port and the direct-current port to the antenna feed system or reverse work; a direct-current pathway limiting admission of high-band signals and carrying out thunder-prevention treatment; a radio frequency pathway coupling radio frequency signals between the radio frequency port and the joining port; and a box body allowing the radio frequency pathway and the direct-current pathway. The radio frequency port, the direct-current port and the joining port are all fixed on the box body. The utility model expands the working frequency of the feed to 800MHz-2170MHz, and covers all fields of the prior mobile communication. The utility model has the advantages of small size, low insertion loss and high insulation degree.
Description
Technical field
The utility model relates to a kind of be used to have the multisystem colocation site of electrical tilt Long-distance Control, the wideband feeding appliance of co-space feedback system, realizes carrying out the interior one feed function of broad frequency band scope.
Background technology
Known loop is three port devices, and port BTS/Node B is connected with base station radio-frequency equipment, and the ANT port is connected with antenna-feedback system on the tower by radio frequency cable, and the DC/OOK port links to each other with DC power supply with base station control signal equipment.Be capacitively coupled to the ANT port from the radiofrequency signal of base station input, converge at the ANT port with antenna control signal and direct current from the DC/OOK port then, three road signals are transported to base station cat head antenna-feedback system by radio frequency cable.In addition, import by the ANT port, shunt to BTS/Node B port and DC/OOK port, and give the base station relevant device respectively from the radiofrequency signal and the antenna-feedback system pilot signal of antenna-feedback system.
Along with developing rapidly of mobile communication, the application mode of multisystem colocation site, common antenna feeder resource obtains the favor of increasing operator.Like this can shared resource, reduce the system equipment cost.Be adapted to the requirement of co-space feedback system or multisystem colocation site, need satisfy the frequency bandwidth of 800MHz to 2170MHz, can contain all mobile communication frequency ranges at present.And current most loop is all realized based on the said structure principle, and the working frequency range of corresponding loop product only is suitable for some mobile communication system (as GSM, CDMA, DCS or WCDMA), belongs to the arrowband microwave device.The arrowband loop can not satisfy the multisystem colocation site with electrical tilt controlled function, the requirement of co-space feedback system.
In addition, because the loop of prior art often adopts dielectric substrate to realize with the form of microstrip circuit, cause that small product size is big, power capacity is little.And the passive intermodulation index depends on the characteristic of dielectric substrate material greatly, is difficult to control in batch process.
The utility model content
The purpose of this utility model is to provide the wideband feeding appliance between a kind of 800MHz to 2170MHz of being operated in frequency, make its miniaturization, and reach insert that loss is little, power capacity big and DC feedback path and radiofrequency signal path between effect such as isolation height.
For solving technical problem of the present utility model, the utility model adopts following technical scheme to realize:
The utility model wideband feeding appliance is used for carrying out feed between tower amplifier and the base station, comprising:
Prevention at radio-frequency port is for the input and the output of the radiofrequency signal of base station provides interface;
DC port is for the input and output of DC power supply and antenna-feedback system control signal provide interface;
Close road port, export antenna-feedback system to behind the road or reverse work provides interface for the signal of radio frequency and DC port closes;
DC channel, qualification is by the high frequency band signal and carry out the lightning protection processing;
Radio frequency path, coupling prevention at radio-frequency port and close radiofrequency signal between the road port;
Box body, ccontaining described radio frequency path and DC channel;
Described prevention at radio-frequency port, DC port and close road port and all be fixed on the box body.
Described DC channel is included in the low pass filter that closes the high-frequency signal in the road port inhibition particular frequency range and carries out lightning protection and handle lightning protection circuit, and low pass filter is connected with the lightning protection treatment circuit.
Described radio frequency path has capacitance, and preferably, described capacitance is a distributed constant formula electric capacity.
For forming described capacitance, described closing between road port and the radio frequency electrically connected by coaxial line, set up the medium sleeve between the internal and external conductor of this coaxial line partial section, and internal and external conductor is to should the sleeve part being disconnected all.For making design more reasonable, the open position of described inner wire and outer conductor staggers mutually.
In addition, the low pass filter in the described DC channel is made up of electric capacity and inductance.Described lightning protection circuit then comprises:
The gas discharge tube of cascade and pressure limiting diode are used for discharging step by step middle ground;
Metal pattern resistance is used as decoupling between gas discharge tube and pressure limiting diode;
Two fast diodes are parallel between metal pattern resistance and the pressure limiting diode, and both are provided with on the contrary polarity.
On physical structure, described box body is divided into two cavitys physically by dividing plate, respectively ccontaining described DC channel and radio frequency path.Described DC channel is integrated on the circuit board, and in the cavity under this circuit board is fixed on, described dividing plate is reserved with through hole and supplies DC channel and close the road port electric connection.
More specifically, described box body comprises body and lid, and pad is established cushion rubber between lid and the body.The cavity that is used for ccontaining radio frequency path in the described box body comprises cylindrical through hole, and one connects described box body setting, sets up rectangular channel in addition, is communicated with described cylindrical through hole.The described road port that closes is arranged on cartridge outer surface with the cavity of the corresponding ccontaining radio frequency path of prevention at radio-frequency port, and receptacle connector and contact pin connector are provided respectively.The cavity of the corresponding ccontaining DC channel of described DC port is arranged on cartridge outer surface, and receptacle connector is provided.
Compared with prior art, the utlity model has following beneficial effect:
1, by in radio frequency path, adopting distributed constant formula electric capacity to hand over every straight-through, in DC channel, adopt low pass filter to suppress high-frequency signal, allow the signal that is lower than 3MHz pass through, make the working band broadening, contained all mobile communication frequency ranges from 800MHz-2170MHz;
2, by physically radio frequency path and DC channel being separated, form unique high frequency, low frequency signal shunt structure, make that the low-and high-frequency signal has high-isolation between prevention at radio-frequency port and DC port, its numerical value is not less than 70dB;
3, rational physical structure makes the further miniaturization of volume of loop product, helps producing in batches;
4, corresponding wide band characteristics have been improved the lightning protection function of product, and the lightening pulse nubbin is limited in the safe scope, and this lightning protection path not only can lead to the DC signal, also 2.176MHz is shown very little path Insertion Loss.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of lightning protection circuit of the present utility model;
Fig. 3 is the schematic diagram of formed first cavity of box body of the present utility model and second cavity, analyses and observe gained in being indulged by the body under the box body;
Fig. 4 is the utility model product combination structural perspective.
Embodiment
See also Fig. 1, on circuit theory, the utility model wideband feeding appliance is based on forming radio frequency path by prevention at radio-frequency port BTS/Node B to closing road port ANT, the centre has been connected in series a capacitor C, it mainly acts on is to suppress low frequency signal, partition direct current, and frequency realizes between these two ports transmitting by being coupling in of capacitor C to the radiofrequency signal of 2170MHz at 800MHz simultaneously.
Form DC channel to closing the road port ANT by low pass filter 21 and lightning protection circuit 22 from DC port DC/OOK; the effect of low pass filter 21 is to suppress high-frequency signal (the particularly radiofrequency signal from 800MHz to 2170MHz); the signal that allows frequency be lower than 3MHz passes through; lightning protection circuit 22 unloadings are from the lightning impulse current of cat head; residual voltage is controlled within the scope that the electronic devices and components of DC circuit and radio circuit can bear, reaches the purpose of protecting group station equipment.
See also Fig. 2, described lightning protection circuit 22 comprises the gas discharge tube UV1 and the pressure limiting diode UV2 of cascade, is used for discharging step by step, between the two ground connection; Metal pattern resistance R 1 is used as decoupling between gas discharge tube UV1 and pressure limiting diode UV2; Two fast diode V1 and V2 are parallel between metal pattern resistance R 1 and the pressure limiting diode UV2, and both are provided with on the contrary polarity.
Used gas discharge tube UV1, residual voltage is 150V, because this residual voltage can cause mortality to damage to lower floor's components and parts, so the second level has adopted pressure limiting diode UV2 further to reduce residual voltage.Because the problem of the switching time of two device UV1 and UV2 adds metal pattern resistance R 1 and does decoupling between two-stage, and consider problems such as the Insertion Loss of low frequency signal and standing wave, two fast diode V1 in parallel and V2 in pressure limiting diode UV2 front.
Fig. 4 is the perspective view of a specific product of the present utility model, and among this figure, wideband feeding appliance integral body is a box body, is made of jointly body 3 and lid 4.
Establish groove in the body 3, after body 3 and lid 4 cover, just form a cavity, this cavity is divided into physically separated two cavitys 31 and 32 by a metal partion (metp), is used for the components and parts of ccontaining different path separately.In addition, pad is established square cushion rubber 1 between lid 4 and the body 3, can play effects such as waterproof, electromagnetic shielding.
Internal structure about body 3 is please observed in conjunction with Fig. 3 and Fig. 4, first cavity 31 that is in the below of body 3 shown in Figure 4 comprises two parts, a part is for connecting the cylindrical hole 312 of whole body 3, another part then is a rectangular channel 314, cylindrical hole 312, rectangular channel 314 all is connected with second cavity 32, after described metal partion (metp) 33 is fixed in rectangular channel 314 tops of first cavity 31, just form described first cavity 31 and second cavity 32, form indivedual through holes (not shown) between dividing plate 33 and the body 3, cable by this through hole or corresponding interface unit can make to be realized between radio frequency path and the DC channel electrically connecting.
In described second cavity 32, be provided with a circuit board 5, integrated described DC channel on the circuit board 5, comprise its low pass filter 21 and lightning protection circuit 22 and printed circuit (not shown) etc., this circuit board 5 is fixed in second cavity 32, on described dividing plate 33, the low pass filter 21 of DC channel is made up of inductance 212 and electric capacity 214, low pass filter 21 places the rectangular channel 314 of dividing plate 33 belows, one end electrically connects by the road port 6 that closes with radio frequency path, and the through hole that an end then passes described dividing plate 33 is electrically connected on the DC channel of described circuit board 5.Body 3 corresponding second cavitys 32 places offer via hole 320, and described DC port 7 adopts SMA type receptacle connector, are inserted among the described via hole 320, and its cable gos deep into second cavity 32 to be realized electrically connecting with the lightning protection circuit 22 of described DC channel.
Described first cavity, 31 built-in described radio frequency paths, radio frequency path is made of a distributed constant formula capacitance C (consulting Fig. 2), and ingenious part of the present utility model is this capacitance C is integrated on the coaxial line 9.Particularly, cylindrical hole 312 two ends at first cavity 31, plant respectively and fixing described road port 6 and the prevention at radio-frequency port 8 of closing, close road port 6 and adopt 7/16 type receptacle connector, 8 of prevention at radio-frequency port adopt 7/16 type contact pin connector, close and then adopt coaxial line 9 to realize its electric connection between road port 6 and the prevention at radio-frequency port 8.
Be connected in the coaxial line 9 that closes between road port 6 and the prevention at radio-frequency port 8 and comprise inner wire 91 and outer conductor 92, inner and outer conductor 91 and 92 certain distance that staggers all is disconnected, so, coaxial line 9 is divided into two parts, a part connects closes road port 6, its outer conductor 92 is shorter, and inner wire 91 is longer, forms outer teat; Another part then connects prevention at radio-frequency port 8, and its inner wire 91 is shorter, and 92 of outer conductors are longer, therefore, forms cavity portion.When road port 6 and prevention at radio-frequency port 8 were closed in installing, the described outer teat that closes road port 6 one ends just was inserted in the cavity portion of described prevention at radio-frequency port 8 one ends.But, in order to form capacitor C, need to keep certain slit between the inner wire 91 of both sides, corresponding, also keep corresponding slit between the outer conductor 92 of both sides, and, then set up medium sleeve 93, so at the overlapping position of inner wire 91 and outer conductor 92, inner and outer conductor 91 does not contact physically with 92, direct current can not and close transmission between the road port 6 at prevention at radio-frequency port 8, has then formed described distributed constant formula capacitance C electrically, realizes the effect of handing over every straight-through.
Close on the road port 6 because low pass filter 21 1 ends of DC channel system is connected, therefore, can consider to be connected on the coaxial line 9 that closes road port 6 sides.And the reliability that connects for enhancing equipment, the described coaxial line 9 that closes between road port 6 and the prevention at radio-frequency port 8 that is connected in can be replaced by the stronger metallic conductor of hardness, because of being is equal to replacement, and therefore not all right detailed description.
In sum, the utility model wideband feeding appliance can be realized radiofrequency signal, antenna control signal With the galvanic road of closing, the signal that closes behind the road flows to the cat head antenna-feedback system by radio-frequency cable, its work Frequency is widened to 800MHz-2170MHz, has contained all spectra of present mobile communication, have volume little, Little and the isolation of insertion loss is than high.
Claims (15)
1. a wideband feeding appliance is used for carrying out feed between tower amplifier and the base station, it is characterized in that it comprises:
Prevention at radio-frequency port is for the input and the output of the radiofrequency signal of base station provides interface;
DC port is for the input and output of DC power supply and antenna-feedback system control signal provide interface;
Close road port, export antenna-feedback system to behind the road or reverse work provides interface for the signal of radio frequency and DC port closes;
DC channel, qualification is by the high frequency band signal and carry out the lightning protection processing;
Radio frequency path, coupling prevention at radio-frequency port and close radiofrequency signal between the road port;
Box body, ccontaining described radio frequency path and DC channel;
Described prevention at radio-frequency port, DC port and close road port and all be fixed on the box body.
2. wideband feeding appliance according to claim 1, it is characterized in that: described DC channel is included in the low pass filter that closes the high-frequency signal in the road port inhibition particular frequency range and carries out lightning protection and handle lightning protection circuit, and low pass filter is connected with the lightning protection treatment circuit.
3. wideband feeding appliance according to claim 2 is characterized in that: described radio frequency path has capacitance.
4. wideband feeding appliance according to claim 3 is characterized in that: described capacitance is a distributed constant formula electric capacity.
5. wideband feeding appliance according to claim 4, it is characterized in that: described closing between road port and the radio frequency electrically connected by coaxial line, set up the medium sleeve between the internal and external conductor of this coaxial line partial section, and internal and external conductor is to should the sleeve part all being disconnected, to form described capacitance.
6. wideband feeding appliance according to claim 5 is characterized in that: the open position of described inner wire and outer conductor staggers mutually.
7. wideband feeding appliance according to claim 6 is characterized in that: described low pass filter is made up of electric capacity and inductance.
8. according to the wideband feeding appliance described in the claim 6, it is characterized in that described lightning protection circuit comprises:
The gas discharge tube of cascade and pressure limiting diode are used for discharging step by step middle ground;
Metal pattern resistance is used as decoupling between gas discharge tube and pressure limiting diode;
Two fast diodes are parallel between metal pattern resistance and the pressure limiting diode, and both are provided with on the contrary polarity.
9. according to any described wideband feeding appliance in the claim 1 to 8, it is characterized in that: described box body is divided into two cavitys physically by dividing plate, respectively ccontaining described DC channel and radio frequency path.
10. wideband feeding appliance according to claim 9 is characterized in that: described DC channel is integrated on the circuit board, and in the cavity under this circuit board is fixed on, described dividing plate is reserved with through hole and supplies DC channel and close the road port electric connection.
11. wideband feeding appliance according to claim 10 is characterized in that: described box body comprises body and lid, and pad is established cushion rubber between lid and the body.
12. wideband feeding appliance according to claim 11 is characterized in that: the cavity that is used for ccontaining radio frequency path in the described box body comprises cylindrical through hole, and one connects described box body setting.
13. wideband feeding appliance according to claim 12 is characterized in that: the cavity that is used for ccontaining radio frequency path in the described box body also comprises rectangular channel, is communicated with described cylindrical through hole.
14. wideband feeding appliance according to claim 13 is characterized in that: the described road port that closes is arranged on cartridge outer surface with the cavity of the corresponding ccontaining radio frequency path of prevention at radio-frequency port, and receptacle connector and contact pin connector are provided respectively.
15. wideband feeding appliance according to claim 14 is characterized in that: the cavity of the corresponding ccontaining DC channel of described DC port is arranged on cartridge outer surface, and receptacle connector is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200529839U CN201042010Y (en) | 2007-06-19 | 2007-06-19 | Broad frequency band feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200529839U CN201042010Y (en) | 2007-06-19 | 2007-06-19 | Broad frequency band feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201042010Y true CN201042010Y (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200529839U Expired - Fee Related CN201042010Y (en) | 2007-06-19 | 2007-06-19 | Broad frequency band feeder |
Country Status (1)
| Country | Link |
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| CN (1) | CN201042010Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361109A (en) * | 2011-10-11 | 2012-02-22 | 深圳市大富科技股份有限公司 | Connecting assembly, low pass filter and cavity filter |
| CN103474726A (en) * | 2013-08-23 | 2013-12-25 | 京信通信系统（中国）有限公司 | Elliptic function type low pass filter |
| CN101330302B (en) * | 2007-06-19 | 2014-06-11 | 京信通信系统（中国）有限公司 | Wideband feeding appliance |
| CN105161928A (en) * | 2015-08-28 | 2015-12-16 | 中航光电科技股份有限公司 | Anti-thunder filtration module |
| CN106067581A (en) * | 2016-07-21 | 2016-11-02 | 斯必能通讯器材(上海)有限公司 | Low passive intermodulation broadband block isolating device |
| CN106410405A (en) * | 2016-11-25 | 2017-02-15 | 京信通信技术(广州)有限公司 | Electronically-tuned antenna feeding device and electronically-tuned antenna feeding method |
| CN107658859A (en) * | 2017-10-17 | 2018-02-02 | 西安飞机工业（集团）有限责任公司 | A kind of Spark gap method for aircraft communication navigation system |
-
2007
- 2007-06-19 CN CNU2007200529839U patent/CN201042010Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330302B (en) * | 2007-06-19 | 2014-06-11 | 京信通信系统（中国）有限公司 | Wideband feeding appliance |
| CN102361109A (en) * | 2011-10-11 | 2012-02-22 | 深圳市大富科技股份有限公司 | Connecting assembly, low pass filter and cavity filter |
| CN102361109B (en) * | 2011-10-11 | 2013-12-04 | 深圳市大富科技股份有限公司 | Connecting assembly, low pass filter and cavity filter |
| CN103474726A (en) * | 2013-08-23 | 2013-12-25 | 京信通信系统（中国）有限公司 | Elliptic function type low pass filter |
| CN103474726B (en) * | 2013-08-23 | 2016-04-06 | 京信通信系统（中国）有限公司 | Elliptic Function Type low pass filter |
| CN105161928A (en) * | 2015-08-28 | 2015-12-16 | 中航光电科技股份有限公司 | Anti-thunder filtration module |
| CN105161928B (en) * | 2015-08-28 | 2018-01-09 | 中航光电科技股份有限公司 | A kind of lightning protection filtration module |
| CN106067581A (en) * | 2016-07-21 | 2016-11-02 | 斯必能通讯器材(上海)有限公司 | Low passive intermodulation broadband block isolating device |
| CN106067581B (en) * | 2016-07-21 | 2019-04-23 | 斯必能通讯器材(上海)有限公司 | Low passive intermodulation broadband block isolating device |
| CN106410405A (en) * | 2016-11-25 | 2017-02-15 | 京信通信技术(广州)有限公司 | Electronically-tuned antenna feeding device and electronically-tuned antenna feeding method |
| WO2018094994A1 (en) * | 2016-11-25 | 2018-05-31 | 京信通信技术(广州)有限公司 | Electrically tunable antenna feed apparatus and method |
| CN107658859A (en) * | 2017-10-17 | 2018-02-02 | 西安飞机工业（集团）有限责任公司 | A kind of Spark gap method for aircraft communication navigation system |
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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: 20080326 Termination date: 20150619 |
|
| EXPY | Termination of patent right or utility model |