CN201869194U - Low-insertion-loss duplexer - Google Patents
Low-insertion-loss duplexer Download PDFInfo
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- CN201869194U CN201869194U CN2010206457639U CN201020645763U CN201869194U CN 201869194 U CN201869194 U CN 201869194U CN 2010206457639 U CN2010206457639 U CN 2010206457639U CN 201020645763 U CN201020645763 U CN 201020645763U CN 201869194 U CN201869194 U CN 201869194U
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Abstract
The utility model discloses a low-insertion-loss duplexer comprising a first receiving cavity filter, a second receiving cavity filter and a transmitting cavity filter, wherein a signal input end of the first receiving cavity filter and a signal output end of the transmitting cavity filter are connected to an antenna port by a connecting resonating piece, a signal output end of the second receiving cavity filter and a signal input end of the transmitting cavity filter are connected to a base station interface by a connecting resonating piece, and a signal output end of the first receiving cavity filter and the signal input end of the second receiving cavity filter are respectively connected with superconducting link system equipment. The low-insertion-loss duplexer is designed especially aiming at the superconducting link system and the CDMA2000 matching base station interfaces of 830MHz frequency, and has the characteristics of low insertion loss, high transceiving isolation, high Q value and miniaturization. The insertion loss of the first receiving cavity filter is no more than 0.25dB; the insertion loss of the second receiving cavity filter is no more than 0.3dB; the insertion loss of the transmitting cavity filter is no more than 0.3dB; and the Q values of the three cavity filters of the duplexer are no less than 4500. On the premise of smallest volume, the duplexer has performance index far higher than the cavity filter type duplexer used on the market.
Description
Technical field
The present invention relates to wireless communication field, comprise space and land, move and fixing wireless communication field.
Background technology
Existing cordless communication network exists the four problems that can't resolve for a long time with prior art and equipment, and this four problems is:
1, because the restriction of geographical position (ocean, desert and hills etc.), environmental protection and right-safeguarding (commercial and residential quarter and historic reservation etc.) and the condition of building a station (electric power, iron tower, transmission, fund etc.) can't solve communication coverage hole problem by newly-built station.
2, because wireless terminal device is subjected to restrictions such as little antenna size, battery capacity, transmitting power, terminal (can make mobile phone or wireless Internet card etc. to land mobile communication network, to satellite communication can be transponder) (land mobile communication network is called the base station to main website, to satellite communication can be ground station) transmission link be weak link, its performance is well below main website to the link of terminal performance, promptly there is uplink and downlink link imbalance problem, and weak link has determined the covering and the communication quality of network, becomes the bottleneck of realizing the high performance network system.
3, the number of present all kinds of main website and terminal equipment increases severely day by day, wireless communication frequency resource anxiety, use spectral frequencies more and more higher, propagation characteristic worse and worse, the main website spacing is more and more nearer, it is serious day by day that Intranet and competition net and other disturb the frequency that produces to pollute, and the main website snr of received signal is descended, and has a strong impact on communication covering, communication quality and power system capacity.
4, CDMA(Code Division Multiple Access, code division multiple access) system of standard exists the self-interference between code channel, produce cell breath, add all kinds of air interference and the soft handover that needs 30% fixed channel expense, often make system operating capacity not reach 60% of theoretical capacity.
Above-mentioned four problems causes wide coverage distance deficiency, covers that the signal penetration rate is low deeply, degradation problem under communication quality variation, frequency and power system capacity and utilization rate of equipment and installations reduction, rate of return on investment and the user satisfaction.At an above difficult problem, what adopt at present all is conventional art means and the equipment that falls behind, and analogy increases new main website equipment, increases the carrier number of main website, sets up tower and puts equipment and repeater equipment and microcellulor indoor distributed system equipment etc. are installed.
Adopt the shortcoming of conventional art means and equipment as follows:
1, the receiver of existing all devices does not all have, very precipitous with the conventional art characteristic that also can not accept filter, it is little to insert minimum, the wide passband passband fluctuation of loss, squareness factor is near 1 radio frequency band filter, the interference of filtering passband outer (stopband) effectively, reach these interference of reduction and enter the Intermodulation Interference that receiver further causes, raised system's back noise.
2, above-mentioned all devices amplifies simultaneously to signal and the noise that receives, be that noise adds up receiving on the link, rather than weaken, the result be received signal quality worse and worse.
3, the low noise amplifier of the receiver radio frequency front end of above-mentioned all devices is worked at normal temperatures, because the electronics Brownian movement produces thermal noise, amplifier has amplified the noise that self produces, and has raised system's back noise, makes signal-to-noise ratio degradation.Influence communication covering seriously and quality and capacity.
4, communication covering and poor quality's place, the zone of the network planning often, main website layout unreasonable (, sub-district too high switch frequent or covering and frequency planning unreasonable etc.), pilot pollution and all kinds of serious interference such as land mobile base station closeness, increase main website, frequency configuration and equipment disposition in these zones, great amount of investment but brings interference and frequency to pollute further seriously often, system and maintenance costs increase, and resource utilizations such as frequency and equipment further reduce.In fact, the most of interference source of network and the source of trouble come from that tower is put, repeater and indoor distributed system, severe contamination network environment.
5, because factors such as available resources, internal and external interference and business demand quantitative changeization are not self controllable, be the passive engineering of mending the fold after the sheep is lost forever so solve problem with above-mentioned method and technology.
In sum, use existing traditional technological means and equipment fundamentally not solve: to remove outer the interference and Intermodulation Interference; Reduction system self back noise; Improve problem effectively to the gain and the sensitivity of useful signal.At the problems referred to above, the applicant has proposed a thinking and a technical scheme of overlapping the brand-new network planning, construction, optimization and O﹠M: the superconductor technology of utilizing that installs a kind of applicant's independent development at wireless main website front end additional is improved the superconduction chain-circuit system of wireless main website received signal (SuperConductor Link System, SCLS; Trade name Beyond Link, BL, following abbreviation BL).BL can overcome the shortcoming of prior art and equipment from root, network performance is had revolutionaryly improve:
1, high-Q filter brings extremely strong antijamming capability.BL adopts high-Q filter to bring extremely strong antijamming capability.At 825-835MHz, adopt high temperature superconducting materia to make radio frequency band filter such as, passband, its insert loss almost nil (＜0.02dB), and traditional cavity body filter inserts loss usually 1dB; Squareness factor is near 1, and quality factor (Q value) are 100,000 the order of magnitude, is 20 times of traditional cavity body filter Q value; Stopband has the above steep attenuation characteristics of 40dB/MHz, the attenuation characteristic about 3dB/MHz and traditional cavity body filter stopband is only had an appointment, and difference is very big.Its characteristic is brought extremely strong antijamming capability and is reduced Intermodulation Interference effectively.
2, under the ultra-low temperature surroundings, low noise amplifier (Low-noise amplifier is called for short LNA) reduces system's back noise effectively, improves system gain.The LNA of BL is operated in 77K(-196.15 ℃) about ultra-low temperature surroundings under, suppressed LNA itself effectively because the thermal noise that Brownian movement produces, reduced system's back noise, LNA brings the raising of gain more to useful signal simultaneously, at normal temperatures, the best noise factor of LNA and under ultra-low temperature surroundings, can reach about 0.2-0.3 dB about 0.6dB.
In a word, BL has high anti-band to be disturbed outward and reduces the Intermodulation Interference ability, can reduce system's back noise effectively and useful signal is brought gain simultaneously, thereby solve the problem that prior art and equipment can't resolve, and improves wireless network performance greatly.
There is a main diversity interface CDMA2000 base station, is connected to the cable that a transmitting-receiving is shared, the signal transmission of finishing the receipts between base station and antenna and sending out.And BL only need handle received signal, so need be with network adaptive device from receive and dispatch shared cable, separating from the received signal of antenna at antenna side, be input to BL and handle, the output signal after handling through BL also will enter the shared cable of transmitting-receiving by network adaptive device and be connected with base station master's diversity interface.For 830MHz frequency range CDMA2000 network, BL need adopt special low insertion loss duplexer as network adapter.If no described low insertion loss duplexer, BL can't be connected with antenna-feedback system with the base station of 830MHz frequency range CDMA2000 network at all.And for BL, need a kind of described low insertion loss duplexer of design, satisfied requirement to be, transmitting-receiving inhibitions degree wants high, receive and the insertion loss of emission filter all little, the Q value will be greatly, volume is little.The insertion loss of the first reception cavity fluid filter is very big to the performance impact of up link, the insertion loss of emission cavity filter is also very big to the down-link performance influence, and present cavity body filter inserts loss generally about 1 ~ 1.5dB on the market, the Q value is difficult to satisfy the performance requirement of superconduction link system equipment below 4000.
The utility model content
The utility model purpose is for mating the product that superconduction link system equipment and 830 MHz frequency range CDMA2000 base-station interfaces provide, be specially the duplexer of a kind of low insertion loss, high receive-transmit isolation, high Q value, miniaturization, high-performance ground realizes that the superconduction chain-circuit system is connected with 830 MHz frequency range CDMA2000 base stations.
The utility model embodiment provides a kind of low insertion loss duplexer, in shell, be provided with and comprise the first reception cavity fluid filter, the second reception cavity fluid filter and emission cavity filter, the signal input part of the wherein said first reception cavity fluid filter is connected to antennal interface with the signal output part of described emission cavity filter by connecting resonance piece, the signal output part of the described second reception cavity fluid filter is connected to base-station interface, the signal output part of the described first reception cavity fluid filter with the signal input part of described emission cavity filter by connecting resonance piece, the signal input part of the described second reception cavity fluid filter is connected with equipment in the superconduction chain-circuit system respectively.
Further, described emission cavity filter and the described first reception cavity fluid filter are the setting of levels chamber layout, and the centre has metallic plate to separate; The described second reception cavity fluid filter is arranged in independent chamber of side, separates by metallic plate and described emission cavity filter and the described first reception cavity fluid filter.
Further, arrange by sphere of movements for the elephants shape and be provided with first resonant cavity, second resonant cavity, the 3rd resonant cavity and the 4th resonant cavity in the described first reception cavity fluid filter inside, and each bending part of each intra resonant cavity is the circular arc corner; All be provided with full-open type air window between first resonant cavity and second resonant cavity, second resonant cavity and the 3rd resonant cavity, the 3rd resonant cavity and the 4th resonant cavity, be provided with open type air window between the 4th resonant cavity and first resonant cavity, be provided with the capacitive character metal probe between first resonant cavity and the 3rd resonant cavity, be provided with the metal coupling piece between second resonant cavity and the 4th resonant cavity; How much centre positions of each resonant cavity are equipped with coaxial resonatron, and there is tuning screw this coaxial resonatron middle, and the resonatron in first resonant cavity is provided with output end connector, and the resonatron in the 4th resonant cavity is provided with the input joint.
Further, arrange by sphere of movements for the elephants shape and be provided with the 5th resonant cavity, the 6th resonant cavity, the 7th resonant cavity and the 8th resonant cavity in described emission cavity filter inside, and each bending part of each intra resonant cavity is the circular arc corner; Be provided with full-open type air window between the 8th resonant cavity and the 5th resonant cavity, the 5th resonant cavity and the 6th resonant cavity, the 6th resonant cavity and the 7th resonant cavity; Be provided with open type air window between the 7th resonant cavity and the 8th resonant cavity, be provided with the capacitive character metal probe between the 6th resonant cavity and the 8th resonant cavity, be provided with the metal coupling piece between the 5th resonant cavity and the 7th resonant cavity; How much centre positions of each resonant cavity are equipped with coaxial resonatron, and there is tuning screw the resonatron middle, and the resonatron in the 7th resonant cavity is provided with the input joint, and the resonatron in the 8th resonant cavity is provided with output end connector.
Further, arrange by sphere of movements for the elephants shape and be provided with the 9th resonant cavity, the tenth resonant cavity, the 11 resonant cavity and the 12 resonant cavity in the described second reception cavity fluid filter inside, and each bending part of each intra resonant cavity is the circular arc corner; Be provided with full-open type air window between the 9th resonant cavity and the tenth resonant cavity, the tenth resonant cavity and the 11 resonant cavity, the 11 resonant cavity and the 12 resonant cavity; Be provided with open type air window between the 12 resonant cavity and the 9th resonant cavity, be provided with the capacitive character metal probe between the tenth resonant cavity and the 12 resonant cavity, be provided with the metal coupling piece between the 9th resonant cavity and the 11 resonant cavity; How much centre positions of each resonant cavity are equipped with coaxial resonatron, and there is tuning screw the resonatron middle, and the resonatron in the 9th resonant cavity is provided with the input joint, and the resonatron in the 12 resonant cavity is provided with out splice going splice.
The metal solid of the described first reception cavity fluid filter, the second reception cavity fluid filter and emission cavity filter all uses aluminum alloy materials to make, and each cavity inner wall is silver-plated.The described first reception cavity fluid filter and the second reception cavity fluid filter gating frequency are 825MHz ~ 835 MHz, and described emission cavity filter gating frequency is 870MHz ~ 880 MHz.
Adopt low insertion loss duplexer of the present utility model that following advantage is arranged:
1, described duplexer can be exclusively used in coupling superconduction chain-circuit system and the 830 MHz frequency range CDMA2000 base stations, and it is very low that it inserts loss.Concrete, described duplexer can be by the first reception cavity fluid filter the signal output part of signal input part and emission cavity filter be connected to antennal interface and realize the antenna end Signal Separation by being connected resonance piece, the signal input part of the signal output part of the second reception cavity fluid filter and emission cavity filter is connected to the BTS interface and realizes that the BTS end signal merges by being connected resonance piece.The signal of reception cavity fluid filter gating 825MHz～835MHz, first receive for the requirement of inserting loss very high, according to the insertion loss≤0.25dB of the first reception cavity fluid filter of above-mentioned standard design; Insertion loss≤the 0.3dB of the described second reception cavity fluid filter; Described emission filter inserts loss≤0.3dB.
2, the limiting value of cavity body filter Q value is about 5000 in theory, and the Q value of cavity body filter that satisfies the miniaturization requirement on the market is general≤4000, but Q value 〉=4500 of three cavity body filters of described duplexer of the present utility model.
3, described duplexer volume is little, and described emission cavity filter and the described first reception cavity fluid filter are the setting of levels chamber layout, and the centre has metallic plate to separate, and has effectively avoided the electromagnetic interference between the filter; The described second reception cavity fluid filter is arranged in independent chamber of side, is convenient to connect the input/output port of each filter, saves the space simultaneously, has realized the volume minimum of similar duplexer, is of a size of 239mm * 130mm * 87mm.
Description of drawings
Fig. 1 is each component circuitry annexation figure of the utility model duplexer.
Fig. 2 is each member connection structure schematic diagram of the utility model duplexer.
Fig. 3 is the structural representation of the first reception cavity fluid filter of the utility model duplexer.
Fig. 4 is the second reception cavity fluid filter and the emission cavity Filter Structures schematic diagram of the utility model duplexer.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model embodiment provides a kind of low insertion loss duplexer, is provided with to comprise the first reception cavity fluid filter Rx1, the second reception cavity fluid filter Rx2 and emission cavity filter Tx in shell 500.The signal input part of the wherein said first reception cavity fluid filter Rx1 is connected to antennal interface with the signal output part of described emission cavity filter Tx by connecting resonance piece, i.e. the ANT interface.The signal output part of the described second reception cavity fluid filter Rx2 is connected to base-station interface with the signal input part of described emission cavity filter Tx by connecting resonance piece, i.e. the BTS interface.The signal input part of the signal output part of the described first reception cavity fluid filter Rx1, the described second reception cavity fluid filter Rx2 is connected with equipment in the superconduction chain-circuit system respectively.
Antennal interface and base station incoming end are N connector among Fig. 1, and the signal input part of the signal output part of the described first reception cavity fluid filter and the second reception cavity fluid filter is sub-miniature A connector or sub-miniature B connector.
As shown in Figure 2, described emission cavity filter Tx and the described first reception cavity fluid filter Rx1 are the setting of levels chamber layout, and the centre has metallic plate 400 to separate; The described second reception cavity fluid filter Rx2 is arranged in independent chamber of side, separates by metallic plate 400 and described emission cavity filter and the described first reception cavity fluid filter.Such as metallic plate 400 thick two millimeters.The metal solid of the described first reception cavity fluid filter, the second reception cavity fluid filter and emission cavity filter all uses aluminum alloy materials to make, and each cavity inner wall is silver-plated.The described first reception cavity fluid filter and the second reception cavity fluid filter gating frequency are 825MHz-835MHz, and described emission cavity filter gating frequency is 870MHz-880 MHz.
As shown in Figure 3, arrange by sphere of movements for the elephants shape and be provided with first resonant cavity 11, second resonant cavity 12, the 3rd resonant cavity 13 and the 4th resonant cavity 14 in the described first reception cavity fluid filter Rx1 inside, and each bending part of each intra resonant cavity is the circular arc corner; All be provided with full-open type air window 15 between first resonant cavity and second resonant cavity, second resonant cavity and the 3rd resonant cavity, the 3rd resonant cavity and the 4th resonant cavity, be provided with open type air window 16 between the 4th resonant cavity and first resonant cavity, be provided with between first resonant cavity and the 3rd resonant cavity between capacitive character metal probe 17, the second resonant cavitys and the 4th resonant cavity and be provided with metal coupling piece 18; How much centre positions of each resonant cavity are equipped with coaxial resonatron 19, there is tuning screw 110 this coaxial resonatron middle, resonatron in first resonant cavity is provided with output end connector 111, the first resonant cavity lateral wall has the resonatron in a through hole 112, the four resonant cavitys to be provided with input joint 113.
The length of described first resonant cavity, second resonant cavity, the 3rd resonant cavity and the 4th resonant cavity all be 60mm, wide all be that 60mm, height all are 39.5mm; Described coaxial resonatron external diameter is 9mm, the high 37.5mm of being.
Shown in the left-half of Fig. 4, arrange by sphere of movements for the elephants shape and be provided with the 5th resonant cavity 31, the 6th resonant cavity 32, the 7th resonant cavity 33 and the 8th resonant cavity 34 in described emission cavity filter inside, and each bending part of each intra resonant cavity is the circular arc corner; Be provided with full-open type air window 35 between the 8th resonant cavity and the 5th resonant cavity, the 5th resonant cavity and the 6th resonant cavity, the 6th resonant cavity and the 7th resonant cavity; Be provided with between the 7th resonant cavity and the 8th resonant cavity to be provided with between capacitive character metal probe 37, the five resonant cavitys and the 7th resonant cavity between open type air window 36, the six resonant cavitys and the 8th resonant cavity and be provided with metal coupling piece 38; How much centre positions of each resonant cavity are equipped with coaxial resonatron 39, and the resonatron that the resonatron middle has the resonatron in tuning screw 40, the seven resonant cavitys to be provided with in input joint 312, the eight resonant cavitys is provided with output end connector 310.
The length of described the 5th resonant cavity, the 6th resonant cavity, the 7th resonant cavity and the 8th resonant cavity all be 60mm, wide all be that 60mm, height all are 39.5mm; Described coaxial resonatron external diameter is 9mm, the high 37.5mm of being.
Shown in the right half part of Fig. 4, arrange by sphere of movements for the elephants shape and be provided with the 9th resonant cavity 21, the tenth resonant cavity the 22, the 11 resonant cavity 23 and the 12 resonant cavity 24 in the described second reception cavity fluid filter inside, each bending part of each intra resonant cavity is the circular arc corner; Be provided with full-open type air window 25 between the 9th resonant cavity and the tenth resonant cavity, the tenth resonant cavity and the 11 resonant cavity, the 11 resonant cavity and the 12 resonant cavity; Be provided with between the 12 resonant cavity and the 9th resonant cavity to be provided with between capacitive character metal probe 27, the nine resonant cavitys and the 11 resonant cavity between open type air window 26, the ten resonant cavitys and the 12 resonant cavity and be provided with metal coupling piece 28; How much centre positions of each resonant cavity are equipped with coaxial resonatron 29, and the resonatron that the resonatron middle has the resonatron in tuning screw 210, the nine resonant cavitys to be provided with in input joint 213, the 12 resonant cavitys is provided with out splice going splice 211.
The length of described the 9th resonant cavity, the tenth resonant cavity, the 11 resonant cavity and the 12 resonant cavity all be 56.5mm, wide all be that 47mm, height all are 60mm; Described coaxial resonatron external diameter is 7.75mm, and height is 55mm.
The input of the output of the described first reception cavity fluid filter and the second reception cavity fluid filter by sub-miniature A connector or sub-miniature B connector be connected with superconduction link system equipment.
Need to prove, the size of the described first reception cavity fluid filter Rx1, the second reception cavity fluid filter Rx2 and emission cavity filter Tx, and the height of coaxial resonatron and diameter etc. all can produce adjustment according to the design needs, cooperate the beneficial effect realized duplexer low insertion loss, high receive-transmit isolation, high Q value, miniaturization.
Through applicant's experiment test repeatedly, each cavity body filter of this duplexer can reach following index down at normal temperature (25 ℃):
Under high temperature (65 ℃) environment, the insertion loss of each filter has ± the floating of 0.01dB.
In the table: BL-I(Rx1) be the first reception cavity fluid filter, BL-O(Rx2) the second reception cavity fluid filter, Tx is the emission cavity filter.
Adopt the duplexer of said structure, can be exclusively used in coupling superconduction chain-circuit system and the 830 MHz frequency range CDMA2000 base stations, help to realize the miniaturization of whole superconduction link system equipment and integrated.Its advantage is low insertion loss, high receive-transmit isolation, high Q value, structure miniaturization.According to above-mentioned design, the size of this duplexer can reach 239mm * 130mm * 87mm.
The above is a preferred implementation of the present utility model; certainly can not limit the interest field of the utility model with this; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvement and change, these improvement and change also are considered as protection range of the present utility model.
Claims (9)
1. low insertion loss duplexer, it is characterized in that, in shell, be provided with and comprise the first reception cavity fluid filter, the second reception cavity fluid filter and emission cavity filter, the signal input part of the wherein said first reception cavity fluid filter is connected to antennal interface with the signal output part of described emission cavity filter by connecting resonance piece, the signal output part of the described second reception cavity fluid filter is connected to base-station interface, the signal output part of the described first reception cavity fluid filter with the signal input part of described emission cavity filter by connecting resonance piece, the signal input part of the described second reception cavity fluid filter is connected with superconduction link system equipment respectively.
2. according to the described low insertion loss duplexer of claim 1, it is characterized in that described emission cavity filter and the described first reception cavity fluid filter are the setting of levels chamber layout, the centre has metallic plate to separate; The described second reception cavity fluid filter is arranged in independent chamber of side, separates by metallic plate and described emission cavity filter and the described first reception cavity fluid filter.
3. according to the described low insertion loss duplexer of claim 1, it is characterized in that, arrange by sphere of movements for the elephants shape and be provided with first resonant cavity, second resonant cavity, the 3rd resonant cavity and the 4th resonant cavity in the described first reception cavity fluid filter inside, each bending part of each intra resonant cavity is the circular arc corner; All be provided with full-open type air window between first resonant cavity and second resonant cavity, second resonant cavity and the 3rd resonant cavity, the 3rd resonant cavity and the 4th resonant cavity, be provided with open type air window between the 4th resonant cavity and first resonant cavity, be provided with the capacitive character metal probe between first resonant cavity and the 3rd resonant cavity, be provided with the metal coupling piece between second resonant cavity and the 4th resonant cavity; How much centre positions of each resonant cavity are equipped with coaxial resonatron, and there is tuning screw this coaxial resonatron middle, and the resonatron in first resonant cavity is provided with output end connector, and the resonatron in the 4th resonant cavity is provided with the input joint.
4. according to the described low insertion loss duplexer of claim 3, it is characterized in that, the length of described first resonant cavity, second resonant cavity, the 3rd resonant cavity and the 4th resonant cavity all be 60mm, wide all be that 60mm, height all are 39.5mm; Described coaxial resonatron external diameter is 9mm, the high 37.5mm of being.
5. according to the described low insertion loss duplexer of claim 1, it is characterized in that, arrange by sphere of movements for the elephants shape and be provided with the 5th resonant cavity, the 6th resonant cavity, the 7th resonant cavity and the 8th resonant cavity in described emission cavity filter inside, each bending part of each intra resonant cavity is the circular arc corner; Be provided with full-open type air window between the 8th resonant cavity and the 5th resonant cavity, the 5th resonant cavity and the 6th resonant cavity, the 6th resonant cavity and the 7th resonant cavity; Be provided with open type air window between the 7th resonant cavity and the 8th resonant cavity, be provided with the capacitive character metal probe between the 6th resonant cavity and the 8th resonant cavity, be provided with the metal coupling piece between the 5th resonant cavity and the 7th resonant cavity; How much centre positions of each resonant cavity are equipped with coaxial resonatron, and there is tuning screw the resonatron middle, and the resonatron in the 7th resonant cavity is provided with the input joint, and the resonatron in the 8th resonant cavity is provided with output end connector.
6. according to the described low insertion loss duplexer of claim 5, it is characterized in that, the length of described the 5th resonant cavity, the 6th resonant cavity, the 7th resonant cavity and the 8th resonant cavity all be 60mm, wide all be that 60mm, height all are 39.5mm; Described coaxial resonatron external diameter is 9mm, the high 37.5mm of being.
7. according to the described low insertion loss duplexer of claim 1, it is characterized in that, arrange by sphere of movements for the elephants shape and be provided with the 9th resonant cavity, the tenth resonant cavity, the 11 resonant cavity and the 12 resonant cavity in the described second reception cavity fluid filter inside, each bending part of each intra resonant cavity is the circular arc corner; Be provided with full-open type air window between the 9th resonant cavity and the tenth resonant cavity, the tenth resonant cavity and the 11 resonant cavity, the 11 resonant cavity and the 12 resonant cavity; Be provided with open type air window between the 12 resonant cavity and the 9th resonant cavity, be provided with the capacitive character metal probe between the tenth resonant cavity and the 12 resonant cavity, be provided with the metal coupling piece between the 9th resonant cavity and the 11 resonant cavity; How much centre positions of each resonant cavity are equipped with coaxial resonatron, and there is tuning screw the resonatron middle, and the resonatron in the 9th resonant cavity is provided with the input joint, and the resonatron in the 12 resonant cavity is provided with out splice going splice.
8. according to the described low insertion loss duplexer of claim 7, it is characterized in that, the length of described the 9th resonant cavity, the tenth resonant cavity, the 11 resonant cavity and the 12 resonant cavity all be 56.5mm, wide all be that 47mm, height all are 60mm; Described coaxial resonatron external diameter is 7.75mm, and height is 55mm.
9. according to claim 1 or 2 described low insertion loss duplexers, it is characterized in that the input of the output of the described first reception cavity fluid filter and the second reception cavity fluid filter is connected with external equipment by sub-miniature A connector or sub-miniature B connector; The metal solid of the described first reception cavity fluid filter, the second reception cavity fluid filter and emission cavity filter all uses aluminum alloy materials to make, and each cavity inner wall is silver-plated.
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| CN2010206457639U CN201869194U (en) | 2010-12-07 | 2010-12-07 | Low-insertion-loss duplexer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196676A (en) * | 2016-03-15 | 2017-09-22 | 南京特信超导技术有限公司 | FDD multi-standard high-temperature superconductor radio-frequency front-end adapters |
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2010
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196676A (en) * | 2016-03-15 | 2017-09-22 | 南京特信超导技术有限公司 | FDD multi-standard high-temperature superconductor radio-frequency front-end adapters |
| CN107196676B (en) * | 2016-03-15 | 2019-08-20 | 南京特信超导技术有限公司 | FDD multi-standard high-temperature superconductor radio-frequency front-end adapter |
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