CN108172956B - A kind of microwave combiner - Google Patents
A kind of microwave combiner Download PDFInfo
- Publication number
- CN108172956B CN108172956B CN201711141266.8A CN201711141266A CN108172956B CN 108172956 B CN108172956 B CN 108172956B CN 201711141266 A CN201711141266 A CN 201711141266A CN 108172956 B CN108172956 B CN 108172956B
- Authority
- CN
- China
- Prior art keywords
- interface
- common cavity
- impedance transformer
- microwave combiner
- common
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The embodiment of the present application discloses a kind of microwave combiner, for new radio-frequency front-end subsystem, compared with prior art, it is possible to reduce filter and 3dB combiner improve integrated level.Microwave combiner includes: the first common cavity, the second common cavity, third common cavity, the first impedance transformer and the second impedance transformer, the first interface of first common cavity is connect with the first signal input interface, the second interface of first common cavity is connect with first antenna interface, and the third interface of the first common cavity is connect with one end of the first impedance transformer；The first interface of second common cavity is connect with the other end of the first impedance transformer, and the second interface of the second common cavity is connect with signal output interface, and the third interface of the second common cavity is connect with one end of the second impedance transformer；The first interface of third common cavity is connect with the other end of the second impedance transformer, and the second interface of third common cavity is connect with the second antennal interface, and the third interface of third common cavity is connect with second signal input interface.
Description
Technical field
This application involves microwave filter combining field more particularly to a kind of microwave combiners.
Background technique
As base station miniature requirement is increasingly strong, filter need to be mentioned further as the critical component in base station module
High integration.
With the fast development of filter industry, the requirement to the index of filter also constantly improves therewith, this side
Face is mainly manifested in, and multichannel product shares an antennal interface, and Out-of-band rejection is wanted high, to be got well with interior Insertion Loss, small in size.It is existing
In technology, as shown in Figure 1, existing combining scheme is combined generally by 3dB electric bridge, but carried out together using 3dB electric bridge
When frequency is combined, isolation is low, at least 3dB loss, and the system complex constituted, integrated level be not high.
Summary of the invention
The embodiment of the present application provides a kind of microwave combiner, for new radio-frequency front-end subsystem, compared with prior art,
Filter and 3dB combiner can be reduced, integrated level is improved.
The first aspect of the embodiment of the present application provides a kind of microwave combiner, and the microwave combiner includes first public
Chamber, the second common cavity, third common cavity, the first impedance transformer and the second impedance transformer, wherein each common cavity includes
First interface, second interface and third interface；The first interface of first common cavity is connected with the first signal input interface,
The second interface of first common cavity is connected with first antenna interface, the third interface of first common cavity and described the
One end of one impedance transformer is connected；The other end of the first interface of second common cavity and first impedance transformer
It is connected, the second interface of second common cavity is connected with signal output interface, the third interface of second common cavity
It is connected with one end of second impedance transformer；The first interface of the third common cavity and second impedance transformer
The other end be connected, the second interface of the third common cavity is connected with the second antennal interface, the third common cavity
Third interface is connected with second signal input interface.Common cavity in the embodiment of the present application can connect two paths simultaneously, no
The signal of same frequency walks different channels, therefore may be implemented to be combined, it is possible to reduce filter and 3dB combiner improve integrated
Degree.
In a kind of possible design, in the first implementation of the embodiment of the present application first aspect, the microwave
Combiner further includes cross coupling device, and first common cavity and the third common cavity further include the 4th interface, wherein institute
The one end for stating cross coupling device is connected with the 4th interface of first common cavity, the other end of the cross coupling device
It is connected with the 4th interface of the third common cavity.The present embodiment additionally provides cross coupling device, introduces cross-coupling dress
Proximal inhibition can be enhanced by setting, and promote being isolated and input with second signal and connecing for the first signal input interface and first antenna interface
Mouth is isolated with the second antennal interface.
In a kind of possible design, in second of implementation of the embodiment of the present application first aspect, described first
Common cavity, the second common cavity and third common cavity are resonator.This example demonstrates the Physical realizations of common cavity, increase
The realizability of the embodiment of the present application.
In a kind of possible design, in the third implementation of the embodiment of the present application first aspect, the resonance
Device is made of inductance and capacitor.The present embodiment specifically illustrates the specific composition of resonator, and increase the embodiment of the present application can
Realisation and integrality.
In a kind of possible design, in the 4th kind of implementation of the embodiment of the present application first aspect, the resonance
Device supports the road N signal to pass through, and the N is the positive integer greater than 1.This embodiment describes the spies for the resonator that the application refers to
Property, feature, which is combined, for resonator provides support.
In a kind of possible design, in the 5th kind of implementation of the embodiment of the present application first aspect, the resonance
The resonance frequency of device is between transmitting-receiving passband.This example demonstrates the characteristics of the resonator electrical property, increase the application reality
Apply the operability of example.
In a kind of possible design, in the 6th kind of implementation of the embodiment of the present application first aspect, the resonance
Device is coaxial cavity resonator or micro-strip resonantor or dielectric resonator etc..This embodiment describes the types of resonator, enrich
The embodiment of the present application.
In a kind of possible design, in the 7th kind of implementation of the embodiment of the present application first aspect, the intersection
Coupling device is probe or grounded metal line or winged bar.This embodiment describes the specific physics realization shapes of cross coupling device
Formula increases the operability of the embodiment of the present application.
In a kind of possible design, in the 8th kind of implementation of the embodiment of the present application first aspect, the intersection
Coupling device is for enhancing proximal inhibition.This embodiment describes the effect of cross coupling device, cross coupling device can increase
Strong proximal inhibition promotes isolation.
In a kind of possible design, in the 9th kind of implementation of the embodiment of the present application first aspect, described first
Impedance transformer and second impedance transformer are used to adjust the signal ratio of the first access and alternate path, first access
For the access where first impedance transformer, the alternate path is the access where second impedance transformer.This
Microwave combiner in embodiment can adjust the signal ratio of two paths of signals by impedance transformer.
As can be seen from the above technical solutions, the embodiment of the present application has the advantage that
The embodiment of the present application provides a kind of microwave combiner, and the microwave combiner includes the first common cavity, the second public affairs
Chamber, third common cavity, the first impedance transformer and the second impedance transformer altogether, wherein each common cavity include first interface,
Second interface and third interface；The first interface of first common cavity is connected with the first signal input interface, and described first
The second interface of common cavity is connected with first antenna interface, and the third interface of first common cavity and first impedance become
One end of parallel operation is connected；The first interface of second common cavity is connected with the other end of first impedance transformer,
The second interface of second common cavity is connected with signal output interface, the third interface of second common cavity and described the
One end of two impedance transformers is connected；The other end of the first interface of the third common cavity and second impedance transformer
It is connected, the second interface of the third common cavity is connected with the second antennal interface, the third interface of the third common cavity
It is connected with second signal input interface.Common cavity in the embodiment of the present application can connect two paths simultaneously, different frequency
Signal walks different channels, therefore may be implemented to be combined, it is possible to reduce filter and 3dB combiner improve integrated level.
Detailed description of the invention
Fig. 1 is a structural schematic diagram for being combined scheme in the prior art；
Fig. 2 is one embodiment structural schematic diagram of microwave combiner in the embodiment of the present application；
Fig. 3 is an application scenarios schematic diagram of microwave combiner in the embodiment of the present application；
Fig. 4 is another example structure schematic diagram of microwave combiner in the embodiment of the present application；
Fig. 5 is that an isolation of microwave combiner in the embodiment of the present application emulates schematic diagram；
Fig. 6 is another application scenarios schematic diagram of microwave combiner in the embodiment of the present application；
Fig. 7 is another isolation emulation schematic diagram of microwave combiner in the embodiment of the present application；
Fig. 8 is another application scenarios schematic diagram of microwave combiner in the embodiment of the present application.
Specific embodiment
The embodiment of the present application provides a kind of microwave combiner, for new radio-frequency front-end subsystem, compared with prior art,
Filter and 3dB combiner can be reduced, integrated level is improved.
The description and claims of this application and term " first ", " second ", " third ", " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so that the embodiments described herein can be in addition to illustrating herein
Or the sequence other than the content of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
It should be noted that the application meets the demand of new radio-frequency front-end subsystem structure, compared with the existing technology,
Improve level of integrated system.In order to make it easy to understand, the id signal by taking 2T1R as an example of the embodiment in the application flows to, wherein
In 2T1R structure, the signal input interface being mentioned above is for receiving signal, and signal output interface is for emitting signal.But if
When id signal flows to by taking 1T2R as an example, the signal input interface being mentioned above can be used for transmitting signal, and signal output connects
Mouth can be used for receiving signal, therefore the function for the signal input interface and signal output interface being mentioned above does not limit herein
It is fixed.
Referring to FIG. 2, Fig. 2 is a kind of structural schematic diagram of microwave combiner provided by the embodiments of the present application, wherein the knot
Structure can be the part-structure of microwave combiner, as antenna opening signal is combined device.As shown in Fig. 2, microwave combiner 200 includes
The 201, second common cavity of first common cavity (C1) (C2) 202, the 203, first impedance transformer of third common cavity (C3) (K1) 204 and
Second impedance transformer (K2) 205, wherein each common cavity includes first interface, second interface and third interface；First is public
The first interface of chamber 201 is connected with the first signal input interface altogether, and the second interface of the first common cavity 201 connects with first antenna
Mouth is connected, and the third interface of the first common cavity 201 is connected with one end of the first impedance transformer 204；Second common cavity 202
First interface be connected with the other end of the first impedance transformer 204, the second interface of the second common cavity 202 and signal export
Interface is connected, and the third interface of the second common cavity 202 is connected with one end of the second impedance transformer 205；Third common cavity
203 first interface is connected with the other end of the second impedance transformer 205, the second interface of third common cavity 203 and second
Antennal interface is connected, and the third interface of third common cavity 203 is connected with second signal input interface.
As shown in figure 3, Fig. 3 is a kind of application scenarios schematic diagram of microwave combiner provided by the embodiments of the present application, wherein
First antenna interface is the Ant1 206 in figure, and the second antennal interface is that Ant2 207, P1 and the P3 in figure are the letter to be emitted
Number, P2 be the signal received, wherein P1 and P2 can pass through the first common cavity 201, and P2 and P3 can pass through
The structure referred in two common cavities 202, microwave combiner structure and Fig. 2 is similar, is specifically not repeated herein.
It should be noted that the first common cavity 201, the second common cavity 202 and third common cavity 203 are resonator, it should
Resonator can be coaxial cavity resonator, can also be other resonators, such as micro-strip resonantor, specific resonator types are herein
Without limitation.It should be noted that the resonator is made of inductance and capacitor, and supports the road N signal to pass through, N is whole greater than 1
Number.
It should be noted that the electrical property of the first common cavity 201, the second common cavity 202 and third common cavity 203 and non-public affairs
Chamber is different altogether, and common cavity is among transmitting-receiving passband, and not common chamber resonance frequency is in respective passband.Such as, it in common cavity, receives
RX passband is f1_RX~f2_RX.Transmission TX passband is f1_TX~f2_TX, it is assumed that RX frequency is lower than TX, the resonance frequency of common cavity
Rate is between f2_RX~f1_TX.
It should be noted that the first impedance transformer 204 and the second impedance transformer 205 are for adjusting the first access and the
The signal ratio of two accesses, the first access are the access where the first impedance transformer 204, and alternate path is the second impedance transformer
Access where 205.In the present embodiment, by adjusting in the application the first impedance transformer 204 and the second impedance transformation
Two-way (adjustment of S_Ant1_P2 and S_Ant2_P2 signal, such as 1:1 may be implemented in device 205；1:2；1:3 etc..
As shown in figure 4, Fig. 4 is another application scenarios schematic diagram of microwave combiner provided by the embodiments of the present application, by
Pass through the same RX filter in the signal received from ANT1 and ANT2, influence ANT1-RX and ANT2-RX phase difference only has
Tap coupler Qe, common cavity frequency f0, impedance transformer K1, three factors.Influence of the difference of F0, K1 to phase is negligible；
The influence of tap Qe, (analysis Qe 10% is fluctuated), to phase effect less than 10 degree, each factor influences RX phase equalization
It is not significant, therefore the performance of module phase equalization can be improved using the microwave combiner 200 in the application.
Wherein, Fig. 5 is that Fig. 4 corresponds to the corresponding circuit diagram P1-P3 isolation simulation result of microwave combiner.
Referring to FIG. 6, Fig. 6 is a kind of another structural schematic diagram of microwave combiner provided by the embodiments of the present application.Such as
Shown in Fig. 2, microwave combiner 200 includes the first common cavity (C1) 201, second common cavity (C2) 202, third common cavity (C3)
203, the first impedance transformer (K1) 204 and the second impedance transformer (K2) 205, wherein each common cavity includes first connecing
Mouth, second interface and third interface；The first interface of first common cavity 201 is connected with the first signal input interface, and first is public
The second interface of chamber 201 is connected with first antenna interface altogether, the third interface and the first impedance transformer of the first common cavity 201
204 one end is connected；The first interface of second common cavity 202 is connected with the other end of the first impedance transformer 204, and second
The second interface of common cavity 202 is connected with signal output interface, and the third interface of the second common cavity 202 and the second impedance convert
One end of device 205 is connected；The first interface of third common cavity 203 is connected with the other end of the second impedance transformer 205, the
The second interface of three common cavities 203 is connected with the second antennal interface, and the third interface and second signal of third common cavity 203 are defeated
Incoming interface is connected.Wherein, it in order to improve the effect of combining, reduces and influences each other with frequency combining bring, in the present embodiment
Microwave combiner further includes cross coupling device (K3) 208, and the first common cavity 201 and third common cavity 203 further include the 4th connecing
Mouthful, wherein one end of cross coupling device 208 is connected with the 4th interface of the first common cavity 201, cross coupling device 208
The other end be connected with the 4th interface of third common cavity 203.
Since embodiment introduces cross coupling device 208, enhance proximal inhibition, thus can be promoted P1- > ANT1 with
The isolation of P3- > ANT2.Wherein, Fig. 5 is to correspond to the corresponding circuit diagram P1-P3 of microwave combiner in Fig. 4 simulation result, Fig. 7 is isolated
Simulation result is isolated for the corresponding circuit diagram P1-P3 of microwave combiner corresponding to Fig. 6.By the simulation result comparison in Fig. 5 and Fig. 7
It is found that isolation can be promoted by increasing cross coupling device 208 between the first common cavity 201 and third common cavity 203.
As shown in figure 8, Fig. 8 is a kind of application scenarios schematic diagram of microwave combiner provided by the embodiments of the present application, wherein
First antenna interface is the Ant1 206 in figure, and the second antennal interface is that Ant2 207, P1 and the P3 in figure are the letter to be emitted
Number, P2 be the signal received, wherein P1 and P2 can pass through the first common cavity 201, and P2 and P3 can pass through
Two common cavities 202, microwave combiner 200 include the first common cavity (C1) 201, second common cavity (C2) 202, third common cavity
(C3) the 203, first impedance transformer (K1) 204 and the second impedance transformer (K2) 205, wherein each common cavity includes
One interface, second interface and third interface；The first interface of first common cavity 201 is connected with the first signal input interface, the
The second interface of one common cavity 201 is connected with first antenna interface, and the third interface of the first common cavity 201 and the first impedance become
One end of parallel operation 204 is connected；The first interface of second common cavity 202 is connected with the other end of the first impedance transformer 204,
The second interface of second common cavity 202 is connected with signal output interface, the third interface of the second common cavity 202 and the second impedance
One end of converter 205 is connected；The first interface of third common cavity 203 is connected with the other end of the second impedance transformer 205
It connects, the second interface of third common cavity 203 is connected with the second antennal interface, the third interface of third common cavity 203 and second
Signal input interface is connected.Wherein, it in order to improve the effect of combining, reduces and influences each other with frequency combining bring, this implementation
Microwave combiner in example further includes cross coupling device (K3) 208, and the first common cavity 201 and third common cavity 203 further include
4th interface, wherein one end of cross coupling device 208 is connected with the 4th interface of the first common cavity 201, cross-coupling dress
208 other end is set to be connected with the 4th interface of third common cavity 203.
It should be noted that the first common cavity 201, the second common cavity 202 and third common cavity 203 are resonator, it should
Resonator can be coaxial cavity resonator, can also be other resonators, such as micro-strip resonantor, specific resonator types are herein
Without limitation.It should be noted that the resonator is made of inductance and capacitor, and supports the road N signal to pass through, N is whole greater than 1
Number.
It should be noted that the electrical property of the first common cavity 201, the second common cavity 202 and third common cavity 203 and non-public affairs
Chamber is different altogether, and common cavity is among transmitting-receiving passband, and not common chamber resonance frequency is in respective passband.Such as, it in common cavity, receives
RX passband is f1_RX~f2_RX.Transmission TX passband is f1_TX~f2_TX, it is assumed that RX frequency is lower than TX, the resonance frequency of common cavity
Rate is between f2_RX~f1_TX.
It should be noted that the first impedance transformer 204 and the second impedance transformer 205 are for adjusting the first access and the
The signal ratio of two accesses, the first access are the access where the first impedance transformer 204, and alternate path is the second impedance transformer
Access where 205.In the present embodiment, by adjusting in the application the first impedance transformer 204 and the second impedance transformation
Two-way (adjustment of S_Ant1_P2 and S_Ant2_P2 signal, such as 1:1 may be implemented in device 205；1:2；1:3 etc..
Microwave combiner in the embodiment of the present application uses 2 grades or multistage (3 and 3 or more) common cavity realization multichannel
Combining achievees the purpose that reduce filter and 3dB combiner, to reduce the volume of filter.
It should be noted that the combining scheme of the application is mainly used for being combined with frequency, between being equally applicable to different frequency range
Combining.The application can be extended to the combining of more multichannel, such as 3 tunnels, 4 tunnels, 8 tunnels etc..The application can be applied to various forms filter
The combining of wave device (such as band logical, with resistance etc.).
Wherein, coupling the first impedance transformer 204 and the second impedance transformer between the common cavity in the application are adjusted
205, it may be implemented two-way (S_Ant1_P2 and S_Ant2_P2), the signal power of two-way is than adjustable, such as 1:1；1:2；1:3
Deng.
Increase cross-coupling K3 between common cavity in this application, can promote two paths (S_Ant1_P1 and S_
Ant2_P3 the isolation between), reduction influence each other.
In the application, due to sharing a certain channel (TX or RX), there is improvement to the phase equalization index in the channel.
The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before
Embodiment is stated the application is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of microwave combiner, which is characterized in that the microwave combiner includes the first common cavity, the second common cavity, third
Common cavity, the first impedance transformer and the second impedance transformer, wherein each common cavity connects including at least first interface, second
Mouth and third interface；
The first interface of first common cavity is connected with the first signal input interface, the second interface of first common cavity
It is connected with first antenna interface, the third interface of first common cavity is connected with one end of first impedance transformer
It connects；
The first interface of second common cavity is connected with the other end of first impedance transformer, second common cavity
Second interface be connected with signal output interface, the third interface of second common cavity and second impedance transformer
One end is connected；
The first interface of the third common cavity is connected with the other end of second impedance transformer, the third common cavity
Second interface be connected with the second antennal interface, the third interface of the third common cavity is connected with second signal input interface
It connects.
2. microwave combiner according to claim 1, which is characterized in that the microwave combiner further includes cross-coupling dress
Set, first common cavity and the third common cavity further include the 4th interface, wherein one end of the cross coupling device with
4th interface of first common cavity is connected, and the 4th of the other end of the cross coupling device and the third common cavity the
Interface is connected.
3. microwave combiner according to claim 1, which is characterized in that first common cavity, the second common cavity and
Three common cavities are resonator.
4. microwave combiner according to claim 3, which is characterized in that the resonator is made of inductance and capacitor.
5. microwave combiner according to claim 3, which is characterized in that the microwave combiner supports the road N signal to pass through,
The N is the integer greater than 1.
6. microwave combiner according to claim 3, which is characterized in that the resonance frequency of the resonator is in transmitting-receiving passband
Between.
7. microwave combiner according to any one of claim 3 to 6, which is characterized in that the resonator is coaxial cavity
Body resonator or micro-strip resonantor or dielectric resonator etc..
8. microwave combiner according to claim 2, which is characterized in that the cross coupling device is probe or ground connection gold
Belong to line or winged bar.
9. the microwave combiner according to claim 2 or 8, which is characterized in that the cross coupling device is logical for improving
Isolation performance between road.
10. microwave combiner according to any one of claim 1 to 6, which is characterized in that first impedance transformer
And second impedance transformer is used to adjust the signal ratio of the first access and alternate path, first access is described first
Access where impedance transformer, the alternate path are the access where second impedance transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711141266.8A CN108172956B (en) | 2017-11-16 | 2017-11-16 | A kind of microwave combiner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711141266.8A CN108172956B (en) | 2017-11-16 | 2017-11-16 | A kind of microwave combiner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108172956A CN108172956A (en) | 2018-06-15 |
| CN108172956B true CN108172956B (en) | 2019-09-20 |
Family
ID=62527438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711141266.8A Active CN108172956B (en) | 2017-11-16 | 2017-11-16 | A kind of microwave combiner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108172956B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910428B (en) * | 2019-11-19 | 2024-03-01 | 上海华为技术有限公司 | Combiner, chip and radio frequency power amplifier |
| CN113258230B (en) * | 2020-06-24 | 2022-04-01 | 中兴通讯股份有限公司 | Dielectric filter combining unit and dielectric multiplexer |
| CN112086720B (en) * | 2020-09-14 | 2022-03-15 | 天华(深圳)通信科技有限公司 | POI combiner for 5G base station |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2749145A1 (en) * | 2009-01-08 | 2010-07-15 | Cts Corporation | Duplex filter with recessed top pattern and cavity |
| CN201490308U (en) * | 2009-03-30 | 2010-05-26 | 安徽华东光电技术研究所 | Ultra wideband tri-frequency combiner |
| CN202737070U (en) * | 2012-06-28 | 2013-02-13 | 安徽省瑞洋通讯设备有限公司 | Full-band high-performance dual-band combiner |
| US9509034B2 (en) * | 2014-11-17 | 2016-11-29 | City University Of Hong Kong | N-way coaxial waveguide power divider/combiner |
| CN206332153U (en) * | 2016-12-13 | 2017-07-14 | 苏州波发特通讯技术股份有限公司 | Multichannel common cavity combiner |
| CN107275739A (en) * | 2017-08-16 | 2017-10-20 | 江苏凡为通信科技有限公司 | A kind of combiner |
-
2017
- 2017-11-16 CN CN201711141266.8A patent/CN108172956B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108172956A (en) | 2018-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105553494B (en) | A kind of radio-frequency front-end frequency selection circuit and its signal acceptance method | |
| CN108172956B (en) | A kind of microwave combiner | |
| CN106788472B (en) | The radio frequency front-end device and mobile terminal of carrier wave polymerization | |
| CN107017913B (en) | A kind of RF transmit-receive circuit | |
| CN104362425B (en) | A kind of mobile terminal of shared NFC antenna | |
| CN105720339A (en) | Dual-band adjustable band-pass filter | |
| CN201976076U (en) | Diplexer | |
| CN105428808A (en) | Antenna and terminal for transmitting and/or receiving multi-frequency-range wireless signals | |
| CN106099370A (en) | Antenna system, harmonics restraint element and radio-frequency unit | |
| CN110829025B (en) | Antenna module, terminal and method for adjusting antenna isolation | |
| CN106230471B (en) | A kind of radio circuit and mobile terminal of carrier wave polymerization | |
| CN205621831U (en) | Adjustable band pass filter of dual -frenquency | |
| CN102611469B (en) | A kind of phase-shift filtering method | |
| CN105140603A (en) | Gap capacitive loading dual-mode dual-passband filter | |
| Chen et al. | A simple and effective method for designing frequency adjustable balun diplexer with high common-mode suppression | |
| CN113824464A (en) | Antenna diplexer circuit, power amplifier transmitting module and mobile communication equipment | |
| CN110797642B (en) | Antenna module and terminal | |
| CN110829023B (en) | Antenna module and terminal | |
| CN104953216A (en) | Power processing circuit and multipath amplification circuit | |
| CN110677168A (en) | 5G terminal signal transceiving device and method and terminal | |
| CN203457154U (en) | Antenna-feed system access device and antenna feed system | |
| CN105655713A (en) | Multi-band antenna and mobile terminal | |
| CN201845848U (en) | Three-band branch line coupler | |
| CN210609159U (en) | 5G terminal signal transmitting and receiving device and terminal | |
| CN205621824U (en) | Five multiplexers of low pass - band -pass based on novel frequency separation structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |