CN209497438U - A kind of three-in-one co-located filter - Google Patents
A kind of three-in-one co-located filter Download PDFInfo
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- CN209497438U CN209497438U CN201920324970.5U CN201920324970U CN209497438U CN 209497438 U CN209497438 U CN 209497438U CN 201920324970 U CN201920324970 U CN 201920324970U CN 209497438 U CN209497438 U CN 209497438U
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Abstract
The utility model proposes a kind of three-in-one co-located filters can obtain positive coupled signal and reverse coupled signal by the way that directional coupler is arranged from filter output signal；By the way that π type attenuation network is arranged, the power of positive coupled signal and reverse coupled signal that adjustment directional coupler obtains is at the optimum detection range of detecting circuit；By the way that detecting circuit is arranged, positive coupled signal and reverse coupled signal are converted into the direct current signal linear with forward signal power and reverse signal power, pass through the DC voltage of detection detecting circuit output, the output signal of filter can be monitored, also it can go out the fluctuation situation of signal according to the reacting condition of voltage, realize measurement and monitoring to transmitter；Compared to traditional filter, filter function is can be realized in the filter of the utility model, also can detecte the voltage of filter output signal, facilitates the measurement and monitoring realized to emitter.
Description
Technical field
The utility model relates to wireless communication fields, more particularly to a kind of three-in-one co-located filter.
Background technique
With the fast development of modern communication systems, radio communication technology applications in various fields is also increasingly extensive.It penetrates
The important component that frequency front and back end is received and dispatched as communication equipment, major function are will to receive high-frequency signal when receiving to sieve
Choosing；Useless transmitting clutter frequency can be effectively filtered out in transmitting, and prevents the wireless interference signal of other transmitters from entering
This transmitter.With the promotion of user demand, radio communication system is also higher and higher to performance of filter requirement, does not require nothing more than
Filter has good functional characteristic, also requires filter scalability high, application is strong, existing filter function list
One, requirement of the client to filter multifunctionality is had been unable to meet, therefore, the utility model, which provides one kind, can be monitored in real time filter
The three-in-one co-located filter of the fluctuation situation of wave device output voltage and reaction filter output signal.
Utility model content
In view of this, the utility model proposes one kind, and filter output voltage and reaction filter can be monitored in real time
The three-in-one co-located filter of the fluctuation situation of output signal.
The technical solution of the utility model is achieved in that the utility model provides a kind of three-in-one co-located filtering
Device comprising rf input terminal, the first RF switch, filter assembly, the second RF switch, orientation being sequentially electrically connected
Coupler and RF output end and detecting circuit, further include π type attenuation network；
Detecting circuit includes positive detecting circuit and reversed detecting circuit；
π type attenuation network includes the first attenuation network and the second attenuation network；
The input terminal of directional coupler and straight-through end correspond electricity with the second RF switch and RF output end respectively
Property connection, the coupled end of directional coupler is electrically connected by the first attenuation network and positive detecting circuit, directional coupler
Isolation end is electrically connected by the second attenuation network and reversed detecting circuit.
On the basis of above technical scheme, it is preferred that positive detecting circuit is identical with reversed detecting circuit structure.
It is further preferred that positive detecting circuit includes AD8362ARUZ-RL power detector and capacitor C98-C104；
CHPF, DECL/2, INLO, DECL, VPOS and CLPF pin difference one of AD8362ARUZ-RL power detector
One corresponding capacitor C98, C99, C101, C102, C103 and C104 of passing through is grounded, AD8362ARUZ-RL power detector
COMM, PWDN, COMM/2, ACOM/2 and ACOM pin are grounded, the VTGT pin of AD8362ARUZ-RL power detector with
Its VREF pin is electrically connected, and the VSET pin of AD8362ARUZ-RL power detector and its VOUT pin are electrically connected,
The INHI pin of AD8362ARUZ-RL power detector is electrically connected by capacitor C100 and the first attenuation network.
It is further preferred that the first attenuation network and the second attenuation network structure are identical.
It is further preferred that the first attenuation network includes resistance R45-R49；
One end of resistance R45 is electrically connected by capacitor C100 and AD8362ARUZ-RL power detector, resistance R46's
One end of one end and resistance R45 are electrically connected, the other end of resistance R45 respectively with one end of resistance R47 and resistance R48 one
End is electrically connected, and the other end of resistance R48 and the coupled end of directional coupler are electrically connected, the other end, the resistance of resistance R46
The other end of R47 and the other end of resistance R49 are grounded.
It is further preferred that the model SYDC-20-62HP+ of directional coupler.
On the basis of above technical scheme, it is preferred that filter assembly includes first filter in parallel, the second filtering
Device and third filter；
One end of first filter is electrically connected with the first RF switch and the second RF switch respectively.
It is further preferred that the frequency range of first filter is 30MHz~90MHz；
The frequency range of second filter is 90MHz~225MHz；
The frequency range of third filter is 225MHz~512MHz.
On the basis of above technical scheme, it is preferred that the first RF switch and the second RF switch be 0.03~
The Three-in-one miniature integrated switch of 3.0GHz.
The three-in-one co-located filter of one kind of the utility model has the advantages that (1) is logical compared with the existing technology
Setting directional coupler is crossed, positive coupled signal and reverse coupled signal can be obtained from filter output signal, realizes function
The sweep check function of rate monitoring, the isolation of source output power fixed ampllitude, signal source, transmission and reflection；
(2) the positive coupled signal and reverse coupled signal obtained by setting π type attenuation network, adjustment directional coupler
Power, be at the optimum detection range of detecting circuit；
(3) by setting detecting circuit, positive coupled signal and reverse coupled signal are converted to and forward signal power
The linear direct current signal with reverse signal power can monitor filter by the DC voltage of detection detecting circuit output
The output signal of wave device can also go out the fluctuation situation of signal according to the reacting condition of voltage, realize the measurement to transmitter and prison
It surveys；
(4) compared to traditional filter, filter function is can be realized in the filter of the utility model, also can detecte filter
The voltage of wave device output signal facilitates the measurement and monitoring realized to emitter.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structure chart of three-in-one co-located filter of the utility model；
Fig. 2 is directional coupler, π type attenuation network and detecting circuit in a kind of three-in-one co-located filter of the utility model
Circuit diagram.
Specific embodiment
Below in conjunction with the utility model embodiment, the technical solution in the utility model embodiment is carried out clear
Chu is fully described by, it is clear that and described embodiment is only a part of embodiment of the utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work
Under the premise of every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, the three-in-one co-located filter of one kind of the utility model comprising the radio frequency being sequentially electrically connected is defeated
Enter terminal, the first RF switch, filter assembly, the second RF switch, directional coupler and RF output end and detection
Circuit and π type attenuation network.
First RF switch and the second RF switch make radiofrequency signal switching input different filtering channels.In this implementation
In example, the first RF switch and the second RF switch are all made of the small size integrated switch of 0.03~3.0GHz, and insertion loss is small,
Standing wave is good, and isolation is high, can be effectively ensured that filter overall losses are small, and proximal inhibition is big, and which improves transceivers
The indices such as sensitivity, selectivity and dynamic range.
Filter assembly realizes the ultrashort wave all band span of 30MHz~512MHz using the method for segmentation.Due to covering
Frequency range it is wider, single hop wave device is not able to satisfy the ultrashort wave all band requirement of 30MHz~512MHz, and single hop performance refers to
It is poor to mark, therefore filter assembly is divided into three sections, and the frequency range of first filter is 30MHz~90MHz, the frequency of second filter
Rate range is 90MHz~225MHz, and the frequency range of third filter is 225MHz~512MHz, and every section of filter is all to use
The bandpass filter that the mode of double tunning series resonance is realized switches resonant capacitance by ten groups of PIN pipe switch arrays and realizes jump
Frequently, i.e. the capacitance state of capacitor has 1024 classes, selected from 1024 resonant frequency points Insertion Loss is smaller, index preferably and frequency connect
The numerical value of corresponding ON-OFF control circuit is stored in storage by band limits of the 250 continuous resonant frequency points to cover this section
Device is in case call.In numerical portion, the switchings that three sections of switches are controlled by switching circuit and the reality in the case where having selected frequency range
The high-low pressure switching of existing 10 tunnels power supply.According to every all the way to the influence of index, the first filter under each frequency range difference and same frequency range
The PIN bis- that different internal resistances is small, parasitic capacitance is big, power capacity is big is respectively adopted in wave device, second filter and third filter
Pole pipe, in the present embodiment, first filter, second filter and third filter belong to the prior art, are not repeated herein.
Directional coupler obtains positive coupled signal and reverse coupled signal, realizes that power monitoring, source output power are steady
Width, signal source isolation, transmission and the sweep check function of reflecting.In the present embodiment, as shown in Fig. 2, the type of directional coupler
It number is SYDC-20-62HP+, the input terminal of directional coupler and straight-through end are sub with the second RF switch and RF output end respectively
It corresponds and is electrically connected, the coupled end of directional coupler is electrically connected by the first attenuation network and positive detecting circuit, fixed
It is electrically connected to the isolation end of coupler by the second attenuation network and reversed detecting circuit.
π type attenuation network, the power of positive coupled signal and reverse coupled signal that adjustment directional coupler obtains, makes it
Optimum detection range in detecting circuit.π type attenuation network includes identical first attenuation network of structure and the second attenuation network
Network, therefore the first attenuation network is introduced at this.In the present embodiment, as shown in Fig. 2, the first attenuation network includes resistance
R45-R49；Specifically, one end of resistance R45 is electrically connected by capacitor C100 and AD8362ARUZ-RL power detector, electricity
Hinder R46 one end and resistance R45 one end be electrically connected, the other end of resistance R45 respectively with one end of resistance R47 and resistance
One end of R48 is electrically connected, and the other end of resistance R48 and the coupled end of directional coupler are electrically connected, and resistance R46's is another
The other end at end, the other end of resistance R47 and resistance R49 is grounded.
Detecting circuit is converted to positive coupled signal and reverse coupled signal and forward signal power and reverse signal function
The linear direct current signal of rate.In the present embodiment, detecting circuit includes the identical positive detecting circuit of structure and reversed
Detecting circuit, therefore in the positive detecting circuit of this introduction, specifically, as shown in Fig. 2, positive detecting circuit includes
AD8362ARUZ-RL power detector and capacitor C98-C104；Wherein, the CHPF of AD8362ARUZ-RL power detector,
DECL/2, INLO, DECL, VPOS and CLPF pin correspond respectively through capacitor C98, C99, C101, C102, C103 and
C104 ground connection, COMM, PWDN, COMM/2, ACOM/2 and ACOM pin of AD8362ARUZ-RL power detector are grounded,
The VTGT pin of AD8362ARUZ-RL power detector and its VREF pin are electrically connected, AD8362ARUZ-RL power detector
VSET pin and its VOUT pin be electrically connected, the INHI pin of AD8362ARUZ-RL power detector passes through capacitor C100
It is electrically connected with the first attenuation network.The VOUT pin of AD8362ARUZ-RL power detector exports positive voltage, real-time monitoring electricity
Pressure can monitor the output signal of filter, and the fluctuation situation of signal can be also gone out according to the reacting condition of voltage, realize to transmitting
The measurement and monitoring of machine.
The foregoing is merely the better embodiments of the utility model, are not intended to limit the utility model, it is all
Within the spirit and principles of the utility model, it is practical new to should be included in this for any modification, equivalent replacement, improvement and so on
Within the protection scope of type.
Claims (9)
1. a kind of three-in-one co-located filter comprising rf input terminal, the first RF switch, filtering being sequentially electrically connected
Device assembly, the second RF switch, directional coupler and RF output end and detecting circuit, it is characterised in that: further include π
Type attenuation network；
The detecting circuit includes positive detecting circuit and reversed detecting circuit；
The π type attenuation network includes the first attenuation network and the second attenuation network；
The input terminal of the directional coupler and straight-through end correspond electricity with the second RF switch and RF output end respectively
Property connection, the coupled end of directional coupler is electrically connected by the first attenuation network and positive detecting circuit, directional coupler
Isolation end is electrically connected by the second attenuation network and reversed detecting circuit.
2. three-in-one co-located filter as described in claim 1 a kind of, it is characterised in that: the forward direction detecting circuit and reversed
Detecting circuit structure is identical.
3. three-in-one co-located filter as claimed in claim 2 a kind of, it is characterised in that: the forward direction detecting circuit includes
AD8362ARUZ-RL power detector and capacitor C98-C104；
CHPF, DECL/2, INLO, DECL, VPOS and CLPF pin difference of the AD8362ARUZ-RL power detector are one by one
It is corresponding to be grounded by capacitor C98, C99, C101, C102, C103 and C104, the COMM of AD8362ARUZ-RL power detector,
PWDN, COMM/2, ACOM/2 and ACOM pin are grounded, the VTGT pin and its VREF of AD8362ARUZ-RL power detector
Pin is electrically connected, and the VSET pin of AD8362ARUZ-RL power detector and its VOUT pin are electrically connected,
The INHI pin of AD8362ARUZ-RL power detector is electrically connected by capacitor C100 and the first attenuation network.
4. a kind of three-in-one co-located filter as claimed in claim 3, it is characterised in that: first attenuation network and second
Attenuation network structure is identical.
5. a kind of three-in-one co-located filter as claimed in claim 4, it is characterised in that: first attenuation network includes electricity
Hinder R45-R49；
One end of the resistance R45 is electrically connected by capacitor C100 and AD8362ARUZ-RL power detector, resistance R46's
One end of one end and resistance R45 are electrically connected, the other end of resistance R45 one end with one end of resistance R47 and resistance R48 respectively
It is electrically connected, the other end of resistance R48 and the coupled end of directional coupler are electrically connected, the other end, the resistance R47 of resistance R46
The other end and the other end of resistance R49 be grounded.
6. a kind of three-in-one co-located filter as claimed in claim 5, it is characterised in that: the model of the directional coupler
SYDC-20-62HP+。
7. a kind of three-in-one co-located filter as described in claim 1, it is characterised in that: the filter assembly includes parallel connection
First filter, second filter and third filter；
One end of the first filter is electrically connected with the first RF switch and the second RF switch respectively.
8. a kind of three-in-one co-located filter as claimed in claim 7, it is characterised in that: the frequency model of the first filter
It encloses for 30MHz~90MHz；
The frequency range of the second filter is 90MHz~225MHz；
The frequency range of the third filter is 225MHz~512MHz.
9. a kind of three-in-one co-located filter as described in claim 1, it is characterised in that: first RF switch and second
RF switch is the Three-in-one miniature integrated switch of 0.03~3.0GHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920324970.5U CN209497438U (en) | 2019-03-14 | 2019-03-14 | A kind of three-in-one co-located filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920324970.5U CN209497438U (en) | 2019-03-14 | 2019-03-14 | A kind of three-in-one co-located filter |
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| Publication Number | Publication Date |
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| CN209497438U true CN209497438U (en) | 2019-10-15 |
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| CN201920324970.5U Active CN209497438U (en) | 2019-03-14 | 2019-03-14 | A kind of three-in-one co-located filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865263A (en) * | 2020-07-15 | 2020-10-30 | 武汉博畅通信设备有限责任公司 | Double-circuit numerical control frequency hopping trapper |
| CN112003586A (en) * | 2020-08-24 | 2020-11-27 | 武汉博畅通信设备有限责任公司 | Four-in-one co-site filter |
-
2019
- 2019-03-14 CN CN201920324970.5U patent/CN209497438U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865263A (en) * | 2020-07-15 | 2020-10-30 | 武汉博畅通信设备有限责任公司 | Double-circuit numerical control frequency hopping trapper |
| CN111865263B (en) * | 2020-07-15 | 2023-06-27 | 武汉博畅通信设备有限责任公司 | Double-circuit numerical control frequency hopping trapper |
| CN112003586A (en) * | 2020-08-24 | 2020-11-27 | 武汉博畅通信设备有限责任公司 | Four-in-one co-site filter |
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