CN203747817U - Multiband active demultiplexer device and wireless network coverage communication system - Google Patents
Multiband active demultiplexer device and wireless network coverage communication system Download PDFInfo
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- CN203747817U CN203747817U CN201420018955.5U CN201420018955U CN203747817U CN 203747817 U CN203747817 U CN 203747817U CN 201420018955 U CN201420018955 U CN 201420018955U CN 203747817 U CN203747817 U CN 203747817U
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- active splitter
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Abstract
The utility model relates to a multiband active demultiplexer device and a wireless network coverage communication system. The demultiplexer device comprises a tuning band pass filter, a high linear low noise amplifier, a first multipath radio frequency switch, a narrowband band pass filter, a second multipath radio frequency switch and a power divider which are sequentially connected in series, a band pass filter control circuit unit used for controlling the center frequency and/or bandwidth of the tuning band pass filter, a radio frequency switch control circuit unit used for controlling closing or opening of the first and second multipath radio frequency switches, and a power source unit used for providing power for the high linear low noise amplifier, the first and second multipath radio frequency switches, the band pass filter control circuit unit and the radio frequency switch control circuit unit, wherein the band pass filter control circuit unit is connected with the tuning band pass filter, and the radio frequency switch control circuit unit is connected with the first and second multipath radio frequency switches. The multiband active demultiplexer device solves an intermodulation interference problem of an uplink weak signal and a downlink large signal and reduces cost of the wireless network coverage communication system.
Description
[
technical field]
The utility model relates to multiplex communication, particularly relates to the multiplex communication system being applied on intercom, relates in particular to the multiband active splitter apparatus that receives intercom signal.
[
background technology]
In wireless communication system, particularly, in some private network communication systems, due to multichannel common, the radiofrequency signal coupling between different channels, can produce Intermodulation Interference, for this reason, can use duplexer to do transmitting-receiving isolation in engineering application.For making up multichannel along separate routes and feeder loss, up splitter adopts active splitter.
Referring to Fig. 4, prior art active splitter 20 ' be to be formed by wider band pass filter, low noise amplifier and power divider, this active splitter 20 ' bandwidth is fixing non-adjustable, and broader bandwidth.The today becoming increasingly complex in electromagnetic environment, understand some useless large-signal by active splitter 20 ' enter receiver, affect the performance of receiver, nature cannot ensure that wireless network covers the communication of communication system long-term stability.Referring to Fig. 5, prior art active splitter 20 ' be applied in wireless network to cover the necessary high-performance duplexer that uses in communication system, could solve the problem of the weak and descending large-signal Intermodulation Interference of upward signal, also could improve the stability of system and the speech quality of the system of guarantee, but cost just increases so a lot.
[
utility model content]
The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and provides a kind of multiband active splitter apparatus and wireless network to cover communication system, this multiband active splitter apparatus has not only solved the problem of the weak and descending large-signal Intermodulation Interference of upward signal, and on the basis of and speech quality stable in guarantee wireless network covering communication system, reduce the cost of wireless network covering communication system.
The technical scheme that the utility model solve the technical problem employing is:
A kind of multiband active splitter apparatus is provided, comprises power divider and power subsystem, this multiband active splitter apparatus also comprises tunable bandpass filter connected in series successively, high linearity low-noise amplifier, the first multi-channel rf switch, narrow band filter and the second multi-channel rf switch, and comprise the band pass filter control circuit unit of controlling described tunable bandpass filter centre frequency and/or bandwidth, control in addition the radio-frequency (RF) switch control circuit unit that described the first multi-channel rf switch and the second multi-channel rf switch are closed or open, described power divider is connected with described the second multi-channel rf switch, described power subsystem is respectively described high linearity low-noise amplifier, the first multi-channel rf switch, the second multi-channel rf switch, band pass filter control circuit unit and the power supply of radio-frequency (RF) switch control circuit unit, described band pass filter control circuit unit is connected with described tunable bandpass filter, described radio-frequency (RF) switch control circuit unit is connected with the second multi-channel rf switch with described the first multi-channel rf switch respectively, described multiband active splitter apparatus receives after wireless signal, first this wireless signal carries out filtering for the first time by the tunable bandpass filter of described multiband active splitter apparatus inside, amplify through too high linearity low-noise amplifier again, and then process is by the first multi-channel rf switch, the narrow band filter of the optional frequency band of narrow band filter and the second multi-channel rf switch composition carries out filtering for the second time, to deliver to described power divider through twice filtering and amplifying signal again, outside each receiver is given along separate routes in twice filtering and amplifying signal by described power divider.
Described multiband active splitter apparatus is applied in the communication system of intercom.Particularly, described multiband active splitter apparatus is applied to the UHF private network communication system that frequency is 400MHz～520MHz.Or described multiband active splitter apparatus is applied to the VHF private network communication system that frequency is 136-174MHz.UHF is the abbreviation of English Ultra High Frequency, and the Chinese meaning is hyperfrequency; VHF is the abbreviation of English Very high frequency, and the Chinese meaning is very high frequency(VHF).
Also provide a kind of wireless network to cover communication system, comprise the trunk desk of antenna-feedback system, active splitter, mixer and at least one channel, and be the external power source of described active splitter power supply, this wireless network covers communication system and also comprises the first low performance duplexer and each the second low performance duplexer with the same quantity of described trunk desk, described active splitter is multiband active splitter apparatus, comprise power subsystem, also comprise tunable bandpass filter connected in series successively, high linearity low-noise amplifier, the first multi-channel rf switch, narrow band filter, the second multi-channel rf switch and power divider, and comprise the band pass filter control circuit unit of controlling described tunable bandpass filter centre frequency and/or bandwidth, control in addition the radio-frequency (RF) switch control circuit unit that described the first multi-channel rf switch and the second multi-channel rf switch are closed or open, described power subsystem is respectively described high linearity low-noise amplifier, the first multi-channel rf switch, the second multi-channel rf switch, band pass filter control circuit unit and the power supply of radio-frequency (RF) switch control circuit unit, described band pass filter control circuit unit is connected with described tunable bandpass filter, described radio-frequency (RF) switch control circuit unit is connected with the second multi-channel rf switch with described the first multi-channel rf switch respectively, described the first low performance duplexer is electrically connected with described antenna-feedback system, multiband active splitter apparatus and mixer respectively, each the second low performance duplexer respectively with multiband active splitter apparatus, mixer and corresponding trunk desk electrical connection, the wireless signal receiving is delivered to described the first low performance duplexer by described antenna-feedback system, be transferred to described multiband active splitter apparatus through described the first low performance duplexer again, described multiband active splitter apparatus receives after described wireless signal, first this wireless signal carries out filtering for the first time by the tunable bandpass filter of described multiband active splitter apparatus inside, amplify through too high linearity low-noise amplifier again, and then process is by the first multi-channel rf switch, the narrow band filter of the optional frequency band of narrow band filter and the second multi-channel rf switch composition carries out filtering for the second time, to deliver to described power divider through twice filtering and amplifying signal again, described power divider is given twice filtering and amplifying signal along separate routes each the second low performance duplexer and delivers to corresponding trunk desk, each trunk desk is forwarded on corresponding receiver again, so just realize a complete communication process.
Described wireless network covers communication system applications and covers in communication system in the wireless network of intercom.Particularly, described wireless network covers the UHF private network communication system that communication system applications is 400MHz～520MHz in frequency.Or described wireless network covers the VHF private network communication system that communication system applications is 136-174MHz in frequency.
Compared with the existing technology, the beneficial effect of the utility model multiband active splitter apparatus and wireless network covering communication system is:
1, use the utility model multiband active splitter apparatus, up more weak signal effectively can be strengthened and amplifies, also solved the problem of descending large-signal Intermodulation Interference, do not weaken sensitivity, dynamic range and the intermodulation index of trunk desk and receiver simultaneously, but also compensated the loss of up link;
2, the utility model multiband active splitter apparatus prime adopts tunable band pass filter, the bandwidth of 3dB can be accomplished in 30MHz, can prevent from being with outer strong signal blocking; And the narrower narrow band filter filtering again of dedicated bandwidth after too high linearity low-noise amplifier makes the utility model multiband active splitter apparatus to having good inhibitory action from the signal outside descending and band;
3 and multiband active splitter apparatus is applied in to wireless network covers in communication system, can substitute with low performance duplexer the high-performance duplexer of prior art, so just can reduce the cost in wireless network covering application system.
In sum, the utility model multiband active splitter apparatus has not only solved the problem of the weak and descending large-signal Intermodulation Interference of upward signal, and on the basis of and speech quality stable in guarantee wireless network covering communication system, reduce the cost of wireless network covering communication system.
[
brief description of the drawings]
Fig. 1 is the theory diagram of the utility model multiband active splitter apparatus; in figure, dotted portion represents wireless signal; tunable bandpass filter 21 that arrow above represents that from then on wireless signal input, and power divider 26 two arrows below represent that from then on signal export;
Fig. 2 is the application principle block diagram of described multiband active splitter apparatus, and dotted portion represents that described multiband active splitter apparatus can make three along separate routes or four uses along separate routes;
Fig. 3 is the theory diagram that wireless network covers application system, and dotted portion represents that described wireless network covers application system and can be used for three channels or four channel systems;
Fig. 4 is the application square frame principle block diagram of prior art active splitter;
Fig. 5 is the theory diagram that prior art wireless network covers application system.
[embodiment]
Below in conjunction with each accompanying drawing, the utility model is described in further detail.
Referring to Fig. 1 to Fig. 3, the utility model relates to a kind of multiband active splitter apparatus 20, comprises power divider 26 and power subsystem 29, this multiband active splitter apparatus 20 also comprises tunable bandpass filter connected in series successively 21, high linearity low-noise amplifier 22, the first multi-channel rf switch 23, narrow band filter 24 and the second multi-channel rf switch 25, and comprise the band pass filter control circuit unit 27 of controlling described tunable bandpass filter 21 centre frequencies and/or bandwidth, control in addition the radio-frequency (RF) switch control circuit unit 28 that described the first multi-channel rf switch 23 and the second multi-channel rf switch 25 are closed or open, described power divider 26 is connected with described the second multi-channel rf switch 25, described power subsystem 29 is respectively described high linearity low-noise amplifier 22, the first multi-channel rf switch 23, the second multi-channel rf switch 25, band pass filter control circuit unit 27 and radio-frequency (RF) switch control circuit unit 28 and powers, described band pass filter control circuit unit 27 is connected with described tunable bandpass filter 21, band pass filter control circuit unit 27 also has an effect, is exactly that power subsystem 29 is powered for tunable bandpass filter 21 indirectly by this band pass filter control circuit unit 27, described radio-frequency (RF) switch control circuit unit 28 is connected with the second multi-channel rf switch 25 with described the first multi-channel rf switch 23 respectively, described multiband active splitter apparatus 20 receives after wireless signal, as receive the wireless signal of intercom, first this wireless signal carries out filtering for the first time by the tunable bandpass filter 21 of described multiband active splitter apparatus 20 inside, amplify through too high linearity low-noise amplifier 22 again, and then process is by the first multi-channel rf switch 23, the narrow band filter of the optional frequency band that narrow band filter 24 and the second multi-channel rf switch 25 form carries out filtering for the second time, to deliver to described power divider 26 through twice filtering and amplifying signal again, outside each receiver 30 is given along separate routes in twice filtering and amplifying signal by described power divider 26, as given along separate routes on outside corresponding intercom.
Described multiband active splitter apparatus 20 is applied in the communication system of intercom.Particularly, described multiband active splitter apparatus 20 is applied to the UHF private network communication system that frequency is 400MHz～520MHz.Or described multiband active splitter apparatus 20 is applied to the VHF private network communication system that frequency is 136-174MHz.
Referring to Fig. 1 to Fig. 3, the utility model also relates to a kind of wireless network and covers communication system, comprises the trunk desk 70 of antenna-feedback system 10, active splitter, mixer 50 and at least one channel, and is the external power source 80 of described active splitter power supply, this wireless network covers communication system and also comprises the first low performance duplexer 40 and each the second low performance duplexer 60 with described trunk desk 70 same quantity, described active splitter is multiband active splitter apparatus 20, comprise power subsystem 29, also comprise tunable bandpass filter connected in series successively 21, high linearity low-noise amplifier 22, the first multi-channel rf switch 23, narrow band filter 24, the second multi-channel rf switch 25 and power divider 26, and comprise the band pass filter control circuit unit 27 of controlling described tunable bandpass filter 21 centre frequencies and/or bandwidth, control in addition the radio-frequency (RF) switch control circuit unit 28 that described the first multi-channel rf switch 23 and the second multi-channel rf switch 25 are closed or open, described power subsystem 29 is respectively described high linearity low-noise amplifier 22, the first multi-channel rf switch 23, the second multi-channel rf switch 25, band pass filter control circuit unit 27 and radio-frequency (RF) switch control circuit unit 28 and powers, described band pass filter control circuit unit 27 is connected with described tunable bandpass filter 21, described radio-frequency (RF) switch control circuit unit 28 is connected with the second multi-channel rf switch 25 with described the first multi-channel rf switch 23 respectively, described the first low performance duplexer 40 is electrically connected with described antenna-feedback system 10, multiband active splitter apparatus 20 and mixer 50 respectively, each the second low performance duplexer 60 is electrically connected with multiband active splitter apparatus 20, mixer 50 and corresponding trunk desk 70 respectively, the wireless signal receiving is delivered to described the first low performance duplexer 40 by described antenna-feedback system 10, as as described in antenna-feedback system 10 wireless signal that receives intercom is delivered to as described in the first low performance duplexer 40, be transferred to described multiband active splitter apparatus 20 through described the first low performance duplexer 40 again, described multiband active splitter apparatus 20 receives after described wireless signal, first this wireless signal carries out filtering for the first time by the tunable bandpass filter 21 of described multiband active splitter apparatus 20 inside, amplify through too high linearity low-noise amplifier 22 again, and then process is by the first multi-channel rf switch 23, the narrow band filter of the optional frequency band that narrow band filter 24 and the second multi-channel rf switch 25 form carries out filtering for the second time, to deliver to described power divider 26 through twice filtering and amplifying signal again, described power divider 26 is given twice filtering and amplifying signal along separate routes each the second low performance duplexer 60 and delivers to corresponding trunk desk 70, each trunk desk 70 is forwarded on corresponding receiver again, as each trunk desk 70 is forwarded on corresponding intercom again, so just realize a complete communication process.
Described wireless network covers communication system applications and covers in communication system in the wireless network of intercom.Particularly, described wireless network covers the UHF private network communication system that communication system applications is 400MHz～520MHz in frequency.Or described wireless network covers the VHF private network communication system that communication system applications is 136-174MHz in frequency.
Exchanging simulating network by high-performance duplexer in Fig. 3 and Fig. 5 and low performance duplexer repeatedly tests relatively.Last test result is: by Fig. 3 and Fig. 5 networking speaking test, communication distance and speech quality do not have significant difference; And the high-performance duplexer in Fig. 3 and Fig. 5 and low performance duplexer are exchanged to networking speaking test, and the high-performance duplexer in Fig. 5 changes into after low performance duplexer, communication distance variation, and also variation of speech quality, has noise to occur; Low performance duplexer in Fig. 3 changes into after high-performance duplexer, and communication distance and speech quality obviously do not worsen.This just illustrates that the active splitter 20 of prior art ' be applied in wireless network covers in communication system and must use high-performance duplexer, the problem that could solve the weak and descending large-signal Intermodulation Interference of upward signal, could improve the stability of whole system and the speech quality of guarantee whole system.And multiband active splitter apparatus 20 of the present utility model is applied in wireless network covering communication system, no matter be to use low performance duplexer, or high-performance duplexer, can solve the problem of the weak and descending large-signal Intermodulation Interference of upward signal, can improve the stability of whole system and ensure the speech quality of whole system; And when having made to use low performance duplexer, just can reduce wireless network and cover the cost in application system.
Above embodiment has only expressed preferred implementation of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims; It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model; Therefore, all equivalents and modifications of doing with the utility model claim scope, all should belong to the covering scope of the utility model claim.
Claims (2)
1. a multiband active splitter apparatus (20), comprises power divider (26) and power subsystem (29); It is characterized in that:
Also comprise tunable bandpass filter connected in series successively (21), high linearity low-noise amplifier (22), the first multi-channel rf switch (23), narrow band filter (24) and the second multi-channel rf switch (25), and comprise the band pass filter control circuit unit (27) of controlling described tunable bandpass filter (21) centre frequency and/or bandwidth, control in addition the radio-frequency (RF) switch control circuit unit (28) that described the first multi-channel rf switch (23) and the second multi-channel rf switch (25) are closed or open; Described power divider (26) is connected with described the second multi-channel rf switch (25); Described power subsystem (29) is respectively described high linearity low-noise amplifier (22), the first multi-channel rf switch (23), the second multi-channel rf switch (25), band pass filter control circuit unit (27) and radio-frequency (RF) switch control circuit unit (28) power supply; Described band pass filter control circuit unit (27) is connected with described tunable bandpass filter (21); Described radio-frequency (RF) switch control circuit unit (28) is connected with the second multi-channel rf switch (25) with described the first multi-channel rf switch (23) respectively;
Described multiband active splitter apparatus (20) receives after wireless signal, first this wireless signal carries out filtering for the first time by the inner tunable bandpass filter (21) of described multiband active splitter apparatus (20), amplify through too high linearity low-noise amplifier (22) again, and then process is by the first multi-channel rf switch (23), the narrow band filter of the optional frequency band of narrow band filter (24) and the second multi-channel rf switch (25) composition carries out filtering for the second time, to deliver to described power divider (26) through twice filtering and amplifying signal again, outside each receiver (30) is given along separate routes in twice filtering and amplifying signal by described power divider (26).
2. wireless network covers a communication system, comprises the trunk desk (70) of antenna-feedback system (10), active splitter, mixer (50) and at least one channel, and is the external power source (80) of described active splitter power supply; It is characterized in that:
Also comprise the first low performance duplexer (40) and each the second low performance duplexer (60) with the same quantity of described trunk desk (70), described active splitter is multiband active splitter apparatus (20), comprise power subsystem (29), also comprise tunable bandpass filter connected in series successively (21), high linearity low-noise amplifier (22), the first multi-channel rf switch (23), narrow band filter (24), the second multi-channel rf switch (25) and power divider (26), and comprise the band pass filter control circuit unit (27) of controlling described tunable bandpass filter (21) centre frequency and/or bandwidth, control in addition the radio-frequency (RF) switch control circuit unit (28) that described the first multi-channel rf switch (23) and the second multi-channel rf switch (25) are closed or open, described power subsystem (29) is respectively described high linearity low-noise amplifier (22), the first multi-channel rf switch (23), the second multi-channel rf switch (25), band pass filter control circuit unit (27) and radio-frequency (RF) switch control circuit unit (28) power supply, described band pass filter control circuit unit (27) is connected with described tunable bandpass filter (21), described radio-frequency (RF) switch control circuit unit (28) is connected with the second multi-channel rf switch (25) with described the first multi-channel rf switch (23) respectively,
Described the first low performance duplexer (40) is electrically connected with described antenna-feedback system (10), multiband active splitter apparatus (20) and mixer (50) respectively; Each the second low performance duplexer (60) respectively with multiband active splitter apparatus (20), mixer (50) and corresponding trunk desk (70) electrical connection;
The wireless signal receiving is delivered to described the first low performance duplexer (40) by described antenna-feedback system (10), be transferred to described multiband active splitter apparatus (20) through described the first low performance duplexer (40) again, described multiband active splitter apparatus (20) receives after described wireless signal, first carry out filtering for the first time by the inner tunable bandpass filter (21) of described multiband active splitter apparatus (20), amplify through too high linearity low-noise amplifier (22) again, and then process is by the first multi-channel rf switch (23), the narrow band filter of the optional frequency band of narrow band filter (24) and the second multi-channel rf switch (25) composition carries out filtering for the second time, to deliver to described power divider (26) through twice filtering and amplifying signal again, described power divider (26) is given twice filtering and amplifying signal along separate routes each the second low performance duplexer (60) and delivers to corresponding trunk desk (70), each trunk desk (70) is forwarded on corresponding receiver again, so just realize a complete communication process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420018955.5U CN203747817U (en) | 2014-01-13 | 2014-01-13 | Multiband active demultiplexer device and wireless network coverage communication system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420018955.5U CN203747817U (en) | 2014-01-13 | 2014-01-13 | Multiband active demultiplexer device and wireless network coverage communication system |
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| Publication Number | Publication Date |
|---|---|
| CN203747817U true CN203747817U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420018955.5U Withdrawn - After Issue CN203747817U (en) | 2014-01-13 | 2014-01-13 | Multiband active demultiplexer device and wireless network coverage communication system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730546A (en) * | 2015-03-25 | 2015-06-24 | 天津七六四通信导航技术有限公司 | Electronic speed controller filtering circuit applied to receiving channel of Tacan ground device |
| CN104779970A (en) * | 2014-01-13 | 2015-07-15 | 深圳市欧标实业发展有限公司 | Multiband active shunt device and wireless network coverage communication system |
| CN107769814A (en) * | 2017-09-26 | 2018-03-06 | 广东欧珀移动通信有限公司 | Lift circuit, mobile terminal and the signal processing method of main collection receiving sensitivity |
-
2014
- 2014-01-13 CN CN201420018955.5U patent/CN203747817U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779970A (en) * | 2014-01-13 | 2015-07-15 | 深圳市欧标实业发展有限公司 | Multiband active shunt device and wireless network coverage communication system |
| CN104779970B (en) * | 2014-01-13 | 2017-07-07 | 深圳市欧标实业发展有限公司 | Multiband active splitter apparatus and wireless network covering communication system |
| CN104730546A (en) * | 2015-03-25 | 2015-06-24 | 天津七六四通信导航技术有限公司 | Electronic speed controller filtering circuit applied to receiving channel of Tacan ground device |
| CN107769814A (en) * | 2017-09-26 | 2018-03-06 | 广东欧珀移动通信有限公司 | Lift circuit, mobile terminal and the signal processing method of main collection receiving sensitivity |
| CN107769814B (en) * | 2017-09-26 | 2020-06-23 | Oppo广东移动通信有限公司 | Circuit for improving receiving sensitivity of main set, mobile terminal and signal processing method |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140730 Effective date of abandoning: 20170707 |