CN208572082U - Radio frequency transmission module, radio frequency link and communication apparatus - Google Patents
Radio frequency transmission module, radio frequency link and communication apparatus Download PDFInfo
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- CN208572082U CN208572082U CN201821007150.5U CN201821007150U CN208572082U CN 208572082 U CN208572082 U CN 208572082U CN 201821007150 U CN201821007150 U CN 201821007150U CN 208572082 U CN208572082 U CN 208572082U
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Abstract
The application embodiment discloses a kind of radio frequency transmission module, comprising: circulator, connecting plate, coupler, conductor sleeve and connector.Circulator is located between the circuit board and connecting plate of radio frequency link, and circulator includes opposite bottom face and top end face, and bottom face is in contact with a plate face of circuit board, and top end face is in contact with a plate face of connecting plate.Connecting plate includes activation signal pin, transmission cabling and grounding electrode, and transmission cabling is connected between circulator and activation signal pin, and grounding electrode is around activation signal pin and transmission cabling arrangement.Coupler is set to the plate face of connecting plate and for being coupled in the radiofrequency signal transmitted in transmission cabling.Conductor sleeve is located at side of the connecting plate far from circulator, and conductor sleeve supports grounding electrode.Connector is located inside conductor sleeve, and the signal pin of connector supports activation signal pin.It is small that above-mentioned radio frequency transmission module accounts for plate suqare.A kind of radio frequency link and communication apparatus is also disclosed in the application embodiment.
Description
Technical field
This application involves communication product technical field more particularly to a kind of radio frequency transmission modules, a kind of radio frequency link and one
Kind communication apparatus.
Background technique
In existing wireless communication system, radio frequency link is an important component part.With time division duplex (time
Division duplexing, TDD) for standard, radio frequency link includes radio frequency transmission module.Due in radio frequency transmission module
Circulator, coupler and connector use plane figure mode, and need microstrip line to connect between each discrete device, lead to radio frequency
Transmission module accounts for that plate suqare is big, and radio frequency link overall volume is larger.
Utility model content
The application embodiment provides one kind and accounts for the lesser radio frequency transmission module of plate suqare, using the radio frequency transmission module
Radio frequency link and communication apparatus.
In a first aspect, the application provides a kind of radio frequency transmission module.The radio frequency transmission module can be applied to communication apparatus
Radio frequency link in.The radio frequency transmission module is used for the transmitting radio frequency signal in radio frequency link.
The radio frequency transmission module includes circulator, connecting plate, coupler, conductor sleeve and connector.The circulator
Between the circuit board and the connecting plate of the radio frequency link.The circulator includes opposite bottom face and top end face.
The bottom face is in contact with a plate face of the circuit board.The top end face is in contact with a plate face of the connecting plate.Institute
Stating connecting plate includes activation signal pin, transmission cabling and grounding electrode.The transmission cabling is connected to the circulator and institute
It states between activation signal pin.The grounding electrode is arranged around the activation signal pin and the transmission cabling.It is described to connect
It electrically isolates between ground electrode and the activation signal pin, is electrically isolated between the grounding electrode and the transmission cabling.
The coupler is set to the plate face of the connecting plate, and for being coupled in the radiofrequency signal transmitted in the transmission cabling.It is described
Conductor sleeve is located at side of the connecting plate far from the circulator.The conductor sleeve supports the grounding electrode.It is described
Using the conductor material for capableing of conduction, therefore when grounding electrode ground connection, the conductor sleeve is grounded conductor sleeve.The company
Device is connect to be located inside the conductor sleeve.The signal pin of the connector supports the activation signal pin.The connector
It is electrically isolated between signal pin and the conductor sleeve.Radiofrequency signal can be transmitted in the transmission cabling, the ground connection electricity
Extremely radiofrequency signal is provided with reference to ground, therefore radiofrequency signal can be transmitted to the connecting plate from the circulator.Radiofrequency signal
It can be transmitted in the signal pin, the conductor sleeve is used to provide for radiofrequency signal with reference to ground, therefore radiofrequency signal can
The connector is transmitted to from the connecting plate.So radiofrequency signal can pass between the circulator and the connector
It is defeated.
In the application embodiment, by being sequentially arranged in the coupler and the connector on the circulator
Side, so that only have the circulator to need to be arranged on the circuit board of radio frequency link in the radio frequency transmission module, the coupling
Device and the connector no longer occupy the layout area of the circuit board, so reduce the radio frequency transmission module accounts for plate face
Product, so that reducing using the overall volume of the radio frequency link of the radio frequency transmission module.
The stacking of the circulator, the coupler and the connector is arranged, and can also shorten or omit being connected to phase
Adjacent microstrip line between the two improves to reduce the loss of the radio frequency transmission module using the radio frequency transmission module
Radio frequency link output power.The conductor sleeve has the radiofrequency signal transmitted in the connector with reference to ground,
Therefore the connector transmitting radio frequency signal, the connector can be able to be detached from the circuit of radio frequency link in solid space
Plate and be arranged in above the connecting plate.
Wherein, the signal pin is used to support the antenna feeder of the radio frequency link far from one end of the activation signal pin
Plate, the conductor sleeve support the antenna feeder plate far from one end of the grounding electrode, to realize between the antenna feeder plate
Radio signal transmission.So the radio frequency transmission module can be realized the radio frequency between the circuit board and the antenna feeder plate
Signal transmission.
In a kind of optional embodiment, the circulator includes center conductor and is connected to the center conductor unlike signal
The connection signal pin and input signal pin at end.Described in one end connection of the connection signal pin far from the center conductor
Transmit cabling.The input signal pin connects the circuit board far from one end of the center conductor.Radiofrequency signal can be certainly
The circuit board is transmitted to the connection signal pin through the input signal pin.
In the present embodiment, the radiofrequency signal on the circuit board is through the input signal pin and the connection signal
Pin is transmitted to the transmission cabling, is then transmitted to the connector through the activation signal pin, therefore the radio frequency passes
Defeated module can be realized transmission of the radiofrequency signal by the circuit board to the connector in the radio frequency link.
Wherein, the circulator includes pedestal.Conductor material can be used in the pedestal.The pedestal connects the circuit board
Ground pad when, pedestal ground connection.The center conductor, the connection signal pin and the input signal pin can pacify
It is mutually electrically isolated loaded on the pedestal, and with the pedestal.
In a kind of optional embodiment, the connecting plate further includes matrix.Described matrix includes towards the circulator
The top surface of bottom surface and the separate circulator.The activation signal pin and the transmission cabling are located at the top surface of described matrix.
In a kind of embodiment, the connecting plate can be circuit board.For example, the connecting plate is double-layer circuit board, then
Described matrix is the core dielectric layer of circuit board, can form circuit board on the top surface of described matrix and the bottom surface of described matrix
Routing layer.Alternatively, the connecting plate is four-layer circuit board, then described matrix may include that the core dielectric layer of circuit board and core are situated between
Two layers of the routing layer and dielectric layer of matter layer two sides, the top surface of described matrix forms the top routing layer of four-layer circuit board, described
The bottom surface of matrix forms the bottom routing layer of four-layer circuit board.Wherein, described matrix include but is not limited to synthetic fibers substrate,
Glass cloth base substrate and ceramic substrate.
In a kind of optional embodiment, the connecting plate further includes connection pin.The connection pin is located at described matrix
Top surface.The transmission cabling connects the connection pin and the activation signal pin.The grounding electrode surrounds the company
Connect pin setting.Described matrix is equipped with connection signal hole.Matrix is run through in connection signal hole.Connection signal hole can be through-hole.Institute
Connection signal pin is stated to protrude into the connection signal hole and contact the connection pin.
Wherein, the connection pin is equipped with jack, and the connection signal pin protrudes into the jack to contact the company
Connect pin.
Wherein, the bottom surface of described matrix is equipped with earthing block.One or more ground holes are additionally provided on the connecting plate.Institute
It states and conductor material, such as copper product can be filled in ground hole.The ground hole connects the grounding electrode and the earthing block.Institute
The conductor material stated in earthing block is electrically connected the earthing block and the grounding electrode.The earthing block contacts the circulator
Pedestal, thus realize the circuit board --- circulator --- ground connection of the connecting plate is continuous.
In a kind of optional embodiment, the coupler is located at the top surface of described matrix or the bottom surface of described matrix.
In a kind of embodiment, the coupler includes load, coupled pin and is connected between load and coupled pin
Microstrip line.The coupled pin is for being electrically connected the circuit board.
Wherein, when the coupler is fixed on the bottom surface of described matrix, the coupler is electrically isolated with the earthing block.
When the coupler is fixed on the top surface of described matrix, the coupler is electrically isolated with the grounding electrode.The load can
Think 50 ohm of (Ω) resistance.Wherein, the microstrip line and the coupled pin can be formed directly in described matrix.
Wherein, when the described matrix of the connecting plate uses ceramic substrate, the coupler can be molded directly on matrix.
In other embodiments, the coupler can be discrete device.The coupler can be fixed by modes such as welding
In on the connecting plate.
In a kind of optional embodiment, the circulator further includes coupled signal pin.The coupled signal pin installation
It is electrically isolated in the pedestal, and with the pedestal.The coupled signal pin is electrically isolated with the center conductor.The coupling
The one end for closing signal pins connects the circuit board, and the other end of the coupled signal pin connects the coupled pin.This reality
It applies in mode, the coupled signal pin is for making the coupler be electrically connected the circuit board.
In a kind of optional embodiment, the circulator further includes output signal pin.The output signal pin installation
It is electrically isolated in the pedestal, and with the pedestal.One end of the output signal pin connects the center conductor, described defeated
The other end of signal pins connects the circuit board out.Radiofrequency signal can be from the connection signal pin through the output signal
Pin is transmitted to the circuit board.
In the present embodiment, the input signal pin is connected to the radio frequency transmitter circuitry on the circuit board, described
Output signal pin is connected to the RF receiving circuit on the circuit board, and the radio frequency link is to send and receive bi-directional RF
Link.The circulator can be multiplexed in the receives link of the radio frequency link and transmitting link.
In a kind of optional embodiment, the connecting plate is fixed on the top end face of the circulator by fastener.Alternatively,
The connecting plate is fixed on the top end face of circulator by way of welding or high temperature glue sticking.The connecting plate is fixed to described
The mode of the top end face of circulator can be according to being selected.
For example, when using fastener connection type multiple first fixation holes can be formed on the circulator, in the company
Form multiple second fixation holes on fishplate bar, multiple fasteners (such as screw) connect correspondingly multiple first fixation holes with it is multiple
Second fixation hole, the connecting plate is locked on the circulator.In other embodiments, spiral shell is can also be used in fastener
Bolt, rivet etc..
Wherein, fastener uses conductor material, can be realized electric connection.Fastener connects the connecting plate and the ring
The pedestal of row device.Fastener can connect the grounding electrode (and described earthing block) on the connecting plate.The pedestal
When ground connection, the circulator and the connecting plate can be grounded continuously by fastener.
In a kind of optional embodiment, the connector includes the signal pin and insulation sleeve.The signal pin is sheathed on
In the insulation sleeve, and the both ends of the signal pin protrude from the both ends of the surface of the insulation sleeve.
In present embodiment, the insulation sleeve is between the signal pin and the conductor sleeve, to realize electrical property
Isolation.The both ends of the surface of the relatively described insulation sleeve in the both ends of the signal pin are protruded, to preferably be in contact with other component, are protected
Card is electrically connected reliability.
In a kind of optional embodiment, conductive adhesive layer or elastic conducting are equipped between the conductor sleeve and the grounding electrode
Body.The conductive adhesive layer and the elastic conductor are for improving the reliability that the conductor sleeve is contacted with the grounding electrode.
The elastic conductor can be metal spring leaf.The elastic conductor can be fixed by welding manner.
Wherein, the conductor sleeve includes the top and bottom being disposed opposite to each other.The bottom surface of the conductor sleeve supports described
Grounding electrode.The bottom surface of the conductor sleeve sets groove, which is used to avoid signal lead (such as the institute on the connecting plate
State transmission cabling).The top surface of the conductor sleeve sets groove, which is used to avoid the signal lead on antenna feeder plate.
Wherein, the inner cavity (for accommodating the space of the connector) of the conductor sleeve and set on the conductor sleeve
The groove of bottom surface and top surface can be formed by milling process.
Second aspect, the application also provide a kind of radio frequency link.The radio frequency link includes signal amplification module, antenna feeder mould
Radio frequency transmission module described in block and any of the above-described embodiment.The signal amplification module is used to amplify the function of radiofrequency signal
Rate.The antenna feeder module is for emitting or receiving radiofrequency signal.In a kind of embodiment, the antenna feeder module also has filtering function
Energy.The radio frequency transmission module is between the signal amplification module and the antenna feeder module.The radio frequency transmission module
Circulator is connect with the signal amplification module.The signal pin of the connector of the radio frequency transmission module connects the antenna feeder mould
Block.
In the present embodiment, radiofrequency signal " the signal amplification module --- circuit board --- it is described go in ring
Device --- the transmission cabling --- connector --- the antenna feeder plate --- described antenna feeder module " between transmit.Due to
The radio frequency transmission module (including the circulator, the transmission cabling, the coupler and the connector) accounts for plate face
Product is smaller and shortens or omits and is connected to microstrip line between adjacent component, thus the overall volume of the radio frequency link compared with
Small, loss is lower, and output power is higher.
Wherein, the radio frequency link further includes circuit board and antenna feeder plate.The signal amplification module is set to the circuit board.
The antenna feeder module is set to the antenna feeder plate.The radio frequency transmission module is between the circuit board and the antenna feeder plate.Institute
It states circulator and connects the signal amplification module through the circuit board.The signal pin of the connector connects institute through the antenna feeder plate
State antenna feeder module.
In a kind of optional embodiment, the signal amplification module includes power amplifier, power coupler and low noise
Big device.The signal amplification module includes the first branch and second branch.The first branch connect institute with the second branch
State the unlike signal pin of circulator.The first branch includes the power amplifier and the power coupler.Described
One branch is a part of the transmitting link of the radio frequency link, and the input signal that the first branch connects the circulator is drawn
Foot.The power coupler is connected between the power amplifier and the input signal pin of the circulator.Described second
Branch includes the low noise amplifier.The second branch be the radio frequency link receives link a part, described second
Branch connects the output signal pin of the circulator.The low noise amplifier connects the output signal pin of the circulator.
The antenna feeder module includes filter and antenna.The filter is connected between the connector and the antenna.In this reality
It applies in mode, the radio frequency link can realize emission of radio frequency signals and reception.
In a kind of optional embodiment, the radio frequency link further includes shielding case.The shielding case is located at the circuit board
Between antenna feeder plate.The shielding case is for surrounding the radio frequency transmission module.
Wherein, it can be fixed by fasteners such as such as screws between the circuit board, the antenna feeder plate and the shielding case,
It can be fixed by modes such as welding, conductive adhesives.The conductor sleeve passes through the affixed shielding case of bracket.The conductor
Sleeve, the bracket and the shielding case can be integrally formed.Shielding case prevents for realizing electromagnetic shielding in its transmitted inwards
Signal is disturbed or externally generates interference.When having multiple radio frequency links in communication apparatus, the shielding case be can be avoided
The radio frequency transmission module of different radio frequency link interferes with each other.
The third aspect, the application also provide a kind of communication apparatus.The communication apparatus includes baseband chip and one or more
A radio frequency link as described in above-mentioned any embodiment.The baseband chip is for synthesizing the signal that will emit, or docking
The signal received is decoded.The signal amplification module of the radio frequency link is electrically connected the baseband chip.
In a kind of optional embodiment, the quantity of the radio frequency link is multiple, the circuit board of multiple radio frequency links
It is integrally formed.Wherein, the antenna feeder plate of multiple radio frequency links can also be integrally formed.At this point, the radio frequency transmission of multiple radio frequency links
Module is arranged at each interval between the antenna feeder plate of the integrated circuit board and one.
Detailed description of the invention
Fig. 1 is a kind of schematic block diagram of communication apparatus provided by the present application；
Fig. 2 is a kind of each component connection relationship diagram of radio frequency link provided by the present application；
Fig. 3 is a kind of structural schematic diagram of radio frequency link provided by the present application；
Fig. 4 is the decomposed structural schematic diagram of radio frequency link shown in Fig. 3；
Fig. 5 be in Fig. 4 circulator in the structural schematic diagram of another angle；
Fig. 6 is the decomposed structural schematic diagram of circulator shown in Fig. 5；
Fig. 7 is decomposed structural schematic diagram of the circulator shown in Fig. 5 in another angle；
Fig. 8 is the schematic diagram of the part-structure of radio frequency link shown in Fig. 4；
Fig. 9 is structural schematic diagram of the structure shown in Fig. 8 in another angle；
Figure 10 is the assembly structure diagram of structure shown in circulator shown in Fig. 5 and Fig. 8；
Figure 11 is the structural schematic diagram of connector in Fig. 4；
Figure 12 is the partial schematic diagram of the part-structure of radio frequency link shown in Fig. 4；
Figure 13 is structural schematic diagram when radio frequency link shown in multiple Fig. 3 provided by the present application is assembled into total module.
Specific embodiment
The application embodiment is described below with reference to the attached drawing in the application embodiment.
Referring to Fig. 1, Fig. 1 is a kind of structural schematic diagram of communication apparatus 100 provided by the present application.Communication apparatus 100 can
With but be not limited to base station, router, mobile unit etc..The application is illustrated so that communication apparatus 100 is base station as an example.
The communication apparatus 100 includes baseband chip 400 and one or more radio frequency links 500.The baseband chip 400
It is contained in the inner cavity of the complete machine with one or more radio frequency links 500.The baseband chip 400 will for synthesizing
The signal of transmitting, or for being decoded to the signal received.The baseband chip 400 connects the radio frequency link 500.
In a kind of embodiment, the radio frequency link 500 is unidirectional transmitting link.The radio frequency link 500 can pass
Signal that is defeated and emitting the synthesis of baseband chip 400.In another embodiment, the radio frequency link 500 is two-way hair
Penetrate receives link.The radio frequency link 500 can either transmit and emit the signal that the baseband chip 400 synthesizes, additionally it is possible to connect
The signal received is simultaneously transferred to the baseband chip 400 by the collection of letters number.The application is transmitting receives link with radio frequency link 500
For be illustrated.
Referring to Fig. 2, Fig. 2 is a kind of each component connection relationship diagram of radio frequency link 500 provided by the present application.This Shen
Please in, with the radio frequency link 500 be applied to time division duplex (time division duplexing, TDD) standard channel radio
It is illustrated for letter system.
The radio frequency link 500 includes signal amplification module 10, radio frequency transmission module 20 and antenna feeder module 30.The signal
Amplification module 10 and the baseband chip 400 are electrically connected.Specifically, the antenna feeder module 30 is for emitting or receiving radio frequency letter
Number.The radio frequency transmission module 20 is used for transmission radio frequency between the signal amplification module 10 and the antenna feeder module 30
Signal.The signal amplification module 10 is used to amplify the power of radiofrequency signal.Optionally, in a kind of embodiment, the antenna feeder
Module 30 also has filter function.
The radio frequency transmission module 20 includes circulator 1, coupler 2 and connector 3.The circulator 1 and the signal
Amplification module 10 connects.The signal amplification module 10 includes the first branch 101.The first branch 101 includes power amplification
Device (power amplifier, PA) 103 and power coupler 104.The first branch 101 is the radio frequency link 500
Emit a part of link.The power coupler 104 is connected between the power amplifier 103 and the circulator 1.Institute
Power coupler 104 is stated for detecting or the power of corrected link signal.The circulator 1 is for protecting the power amplifier
103.The coupler 2 is used to couple the radiofrequency signal in the cabling between the circulator 1 and the connector 3, Jin Eryong
In to antenna amplitude or phase be corrected.The connector 3 connects the antenna feeder module 30.The antenna feeder module 30 is wrapped
Include filter 301 and antenna 302.The filter 301 is connected between the connector 3 and the antenna 302.The antenna
302 are used for external emission radiofrequency signal.In the present embodiment, the radio frequency link 500 can realize transmitting or receive radio frequency
Signal.
Optionally, the signal amplification module 10 further includes second branch 102.The second branch 102 includes low noise
Big device 105.The second branch 102 is a part of the receives link of the radio frequency link 500.The low noise amplifier 105
Connect the circulator 1.The low noise amplifier 105 is separately connected the difference of the circulator 1 with the power coupler 104
Signal pins.The circulator 1 can be realized transmitting link and receives link multiplexing.
It is a kind of structural schematic diagram of radio frequency link 500 provided by the present application also referring to Fig. 3 and Fig. 4, Fig. 3.Fig. 4 is
The decomposed structural schematic diagram of radio frequency link 500 shown in Fig. 3.
The radio frequency link 500 further includes circuit board 40, antenna feeder plate 50 and shielding case 60.The signal amplification module 10 is set
In the circuit board 40.The antenna feeder module 30 is set to the antenna feeder plate 50.The antenna feeder plate 50 can be circuit board.It is described to penetrate
Frequency transmission module 20 is set between the circuit board 40 and the antenna feeder plate 50.The radio frequency transmission module 20 is used in the electricity
Transmitting radio frequency signal between road plate 40 and the antenna feeder plate 50.The radio frequency transmission module 20 is electrically connected through the circuit board 40
The signal amplification module 10.The radio frequency transmission module 20 is electrically connected the antenna feeder module 30 through the antenna feeder plate 50.Institute
Shielding case 60 is stated between the circuit board 40 and antenna feeder plate 50.The shielding case 60 is for surrounding the radio frequency transmission module
20.Shielding case 60 prevents for realizing electromagnetic shielding the signal of its transmitted inwards is disturbed or the signal pair of its transmitted inwards
Outer generation interference.
The radio frequency transmission module 20 further includes connecting plate 4 and conductor sleeve 5.The circulator 1 is located at the rf chain
Between the circuit board 40 and the connecting plate 4 on road 500.The circulator 1 includes opposite bottom face 11 and top end face 12.Institute
Bottom face 11 is stated to be in contact with a plate face of the circuit board 40.The circulator 1 connects the signal through the circuit board 40
Amplification module 10.The top end face 12 is in contact with a plate face of the connecting plate 4.In other words, the connecting plate 4 is located at annular
It the side of device 1 and is in contact with the top end face 12.The connecting plate 4 includes activation signal pin 41, transmission cabling 42 and connects
Ground electrode 43.The transmission cabling 42 is connected between the circulator 1 and the activation signal pin 41.The grounding electrode
43 arrange around the activation signal pin 41 and the transmission cabling 42.The grounding electrode 43 and the activation signal pin
It electrically isolates between 41, is electrically isolated between the grounding electrode 43 and the transmission cabling 42.Radiofrequency signal can be described
It is transmitted in transmission cabling 42, the grounding electrode 43 provides for radiofrequency signal with reference to ground, therefore radiofrequency signal can be from the ring
Row device 1 is transmitted to the connecting plate 4.The coupler 2 is set to the connecting plate 4, and for being coupled in the transmission cabling 42
The radiofrequency signal of middle transmission.
The conductor sleeve 5 is located at side of the connecting plate 4 far from the circulator 1.The conductor sleeve 5 supports institute
State grounding electrode 43.The conductor sleeve 5, which uses, is capable of conductive conductor material, therefore when the ground connection of the grounding electrode 43, institute
State the ground connection of conductor sleeve 5.
The connector 3 is located inside the conductor sleeve 5.The signal pin 31 of the connector 3 supports the contact letter
Number pin 41.It is electrically isolated between the signal pin 31 and the conductor sleeve 5 of the connector 3.Radiofrequency signal can be described
It is transmitted in signal pin 31, the conductor sleeve 5 is used to provide for radiofrequency signal with reference to ground, therefore radiofrequency signal can be from the company
Fishplate bar 4 is transmitted to the connector 3.So radiofrequency signal can be transmitted between the circulator 1 and the connector 3.
Wherein, the one end of the signal pin 31 far from the activation signal pin 41 is for supporting the radio frequency link 500
Antenna feeder plate 50, the conductor sleeve 5 supports the antenna feeder plate 50 far from one end of the grounding electrode 43, to realize and institute
State the radio signal transmission between antenna feeder plate 50.So the radio frequency transmission module 20 can be realized the circuit board 40 and institute
State the radio signal transmission between antenna feeder plate 50.The signal pin 31 of the connector 3 connects the antenna feeder through the antenna feeder plate 50
Module 30.In the present embodiment, radiofrequency signal is in " the signal amplification module 10 --- circuit board 40 --- described ring
--- --- connector 3 --- the antenna feeder plate 50 --- is between the antenna feeder module 30 " for the transmission cabling 42 for row device 1
Transmission.
In this application, by making the coupler 2 and the connector 3 be sequentially arranged in 1 top of circulator, so that
Only have the circulator 1 to need to be arranged in the coupling on the circuit board 40 of radio frequency link 500 in the radio frequency transmission module 20
Device 2 and the connector 3 no longer occupy the layout area of the circuit board 40, so reduce the radio frequency transmission module 20
Account for plate suqare so that using the radio frequency transmission module 20 radio frequency link 500 overall volume reduce.
The stacking of the circulator 1, the coupler 2 and the connector 3 is arranged, and can also shorten or omit being connected to
Adjacent microstrip line between the two improves to reduce the loss of the radio frequency transmission module 20 using the radio frequency transmission
The output power of the radio frequency link 500 of module 20.The conductor sleeve 5 makes the radiofrequency signal transmitted in the connector 3
With reference, therefore the connector 3 transmitting radio frequency signal, the connector 3 can be able to be detached from and penetrate in solid space
The circuit board 40 of frequency link 500 and be arranged in 4 top of the connecting plate.
Applicant learns that, even if carrying out Miniaturization Design to device each in radio frequency transmission module, traditional penetrates by verifying
The plate face ratio that frequency transmission module occupies circuit board is still approximately kept at 20% or so, it is difficult to be broken through.And it is herein described
Radio frequency transmission module 20 is by the optimization to device architecture and arrangement and integrates, and the radio frequency transmission module 20 accounts for plate suqare drop
60% down to traditional scheme reduces by 8% or so hereinafter, making the plate suqare that accounts for of the radio frequency transmission module 20.
In the application, the circuit board 40 is substantially plate-like.Circuit board 40 includes two plate faces and connection being disposed opposite to each other
All sides between plate face, the two plate faces can be substantially parallel.The connecting plate 4 is substantially plate-like.Connecting plate 4 includes two
The plate face being disposed opposite to each other and all sides being connected between plate face, the two plate faces can be substantially parallel.
In a kind of embodiment, the shielding case 60 can also surround the signal amplification module 10 and be arranged.Wherein, described
Shielding case 60 further includes set on the isolation board between the first branch 101 and the second branch 102, and isolation board is for avoiding
Signal in the first branch 101 is interfered with each other with the signal in the second branch 102.
Also referring to Fig. 5 to Fig. 7, Fig. 5 be in Fig. 4 circulator 1 in the structural schematic diagram of another angle；Fig. 6 is Fig. 5
The decomposed structural schematic diagram of shown circulator 1；Fig. 7 is that circulator 1 shown in Fig. 5 shows in the decomposed structure of another angle
It is intended to.
The circulator 1 includes pedestal 13, center conductor 14, connection signal pin 15, input signal pin 16, output letter
Number pin 17 and coupled signal pin 18.
Conductor material can be used in the pedestal 13.The bottom face 11 and the top end face 12 formation of the circulator 1
On opposite two end faces of the pedestal 13.When the pedestal 13 connects the ground pad of the circuit board 40, the pedestal
13 ground connection.
The center conductor 14 is installed on the pedestal 13, and mutually electrically isolates with the pedestal 13.
The connection signal pin 15, the input signal pin 16 and the output signal pin 17 are installed on the base
Seat 13, and mutually electrically isolated with the pedestal 13.It can be realized by insulation external member 19 between above-mentioned pin and the pedestal 13
It electrically isolates.The connection signal pin 15, the input signal pin 16 and the output signal pin 17 are connected to described
14 unlike signal end of center conductor.For example, signal end 141 there are three the tools of center conductor 14, the connection signal pin 15,
The input signal pin 16 and the output signal pin 17 are connected to different signal ends 141.The connection signal pin
15 one end far from the center conductor 14 connect the transmission cabling 42.The input signal pin 16 is far from the center
One end of conductor 14 connects the circuit board 40.The first branch 101 connects the input signal pin 16 of the circulator 1.
Radiofrequency signal can be transmitted to the connection signal pin 15 through the input signal pin 16 from the circuit board 40.It is described defeated
One end of signal pins 17 connects the circuit board 40 out.The output signal that the second branch 102 connects the circulator 1 is drawn
Foot 17.Radiofrequency signal can be transmitted to the circuit board 40 through the output signal pin 17 from the connection signal pin 15.
The coupled signal pin 18 is installed on the pedestal 13, and electrically isolates with the pedestal 13.The coupling letter
Number pin 18 is electrically isolated with the center conductor 14.Insulation external member 19 can be arranged on the outside of the coupled signal pin 18, with reality
Now electrically isolating between the pedestal 13.One end of the coupled signal pin 18 connects the circuit board 40, the coupling
The other end for closing signal pins 18 connects the coupler 2.The coupled signal pin 18 is for connecting the coupler 2 electrically
Connect the circuit board 40.
In the present embodiment, the radiofrequency signal on the circuit board 40 is through the input signal pin 16 and the connection
Signal pins 15 are transmitted to the transmission cabling 42, are then transmitted to institute through the activation signal pin 41 and the connector 3
State antenna feeder plate 50, therefore the radio frequency transmission module 20 can be realized in the radio frequency link 500 radiofrequency signal by the circuit
Plate 40 arrives the transmission of the antenna feeder plate 50.Radiofrequency signal on the antenna feeder plate 50 is through the connector 3, the activation signal
Pin 41 and the transmission cabling 42 are transmitted to the connection signal pin 15, are then transmitted by the output signal pin 17
To the circuit board 40, therefore the radio frequency transmission module 20 can be realized in the radio frequency link 500 radiofrequency signal by described
Antenna feeder plate 50 arrives the transmission of the circuit board 40.
The input signal pin 16 is connected to radio frequency transmitter circuitry (namely the first branch on the circuit board 40
101), the output signal pin 17 is connected to RF receiving circuit (namely the second branch on the circuit board 40
102), the radio frequency link 500 is to send and receive two-way radio frequency link.The circulator 1 can be in the radio frequency link 500
Receives link and transmitting link in be multiplexed.
It is the schematic diagram of the part-structure of radio frequency link 500 shown in Fig. 4 also referring to Fig. 8 and Fig. 9, Fig. 8；Fig. 9 is Fig. 8
Structural schematic diagram of the shown structure in another angle.
The connecting plate 4 further includes matrix 44.Described matrix 44 includes towards the bottom surface 441 of the circulator 1 and separate
The top surface 442 of the circulator 1.The activation signal pin 41 and the transmission cabling 42 are located at the top surface of described matrix 44
442.In the vertical direction of transmission 42 extending direction of cabling, the width of the activation signal pin 41 is greater than the transmission
The width of cabling 42.The activation signal pin 41 can be generally circular oval or rectangular.The connecting plate 4 also wraps
Include connection pin 45.The connection pin 45 is located at the top surface 442 of described matrix 44.The transmission cabling 42 connects the connection
Pin 45 and the activation signal pin 41.The grounding electrode 43 is arranged around the connection pin 45.Described matrix 44 is set
There is connection signal hole 443.Matrix 44 is run through in connection signal hole 443.Connection signal hole 443 can be through-hole.
It is understood that the grounding electrode 43 refers to around the activation signal pin 41, described to connect in the application
Ground electrode 43 is arranged in the setting of 41 surrounding of activation signal pin, and in around the state surrounded.It can be with around the structure surrounded
It is that whole circle surrounds, is also possible to modes, the application such as half-turn surrounds, two sides are surrounded and does not make considered critical to this.Likewise, described
Grounding electrode 43 is arranged around the transmission cabling 42 and the connection pin 45, can also do similar understanding.
The bottom surface 441 of described matrix 44 is equipped with earthing block 46.One or more ground holes are additionally provided on the connecting plate 4
444.Ground hole 444 runs through matrix 44.Conductor material, such as copper product can be filled in the ground hole 444.The ground hole
The 444 connections grounding electrode 43 and the earthing block 46.Conductor material in the earthing block 46 is electrically connected the ground connection
Block 46 and the grounding electrode 43.The earthing block 46 contacts the pedestal 13 of the circulator 1, to realize the circuit board
The ground connection of the connecting plate 4 is continuous for 40 --- circulators 1 ---.
The coupler 2 is located at the top surface 442 of described matrix 44 or the bottom surface 441 of described matrix 44.The application is with described
Coupler 2 is illustrated for being located at the bottom surface 441 of described matrix 44.
The coupler 2 includes load 21, coupled pin 22 and the micro-strip being connected between load 21 and coupled pin 22
Line 23.The coupled pin 22 is for being electrically connected the circuit board 40.Wherein, the coupler 2 is fixed on described matrix 44
Bottom surface 441 when, the coupler 2 is electrically isolated with the earthing block 46.The coupler 2 is fixed on described matrix 44
When top surface 442, the coupler 2 is electrically isolated with the grounding electrode 43.The load 21 can be 50 ohm (Ω) electricity
Resistance.Wherein, the microstrip line 23 and the coupled pin 22 can be formed directly in described matrix 44.The coupled signal pin
18 other end connects the coupled pin 22.
In a kind of embodiment, the connecting plate 4 can be circuit board.For example, the connecting plate 4 is double-layer circuit board,
Then described matrix 44 is the core dielectric layer of circuit board, and the top layer that circuit board can be formed on the top surface 442 of described matrix 44 is walked
Line layer, the activation signal pin 41, the transmission cabling 42 and the connection pin 45 are located at the top layer routing layer.It is described
The bottom routing layer of circuit board, the microstrip line of the earthing block 46 and the coupler 2 can be formed on the bottom surface 441 of matrix 44
23 and coupled pin 22 be formed in the bottom routing layer.
Alternatively, the connecting plate 4 is four-layer circuit board, then described matrix 44 may include the core dielectric layer and core of circuit board
Two layers of the routing layer and dielectric layer of heart dielectric layer two sides, the top that the top surface 442 of described matrix 44 forms four-layer circuit board are walked
Line layer, the bottom surface 441 of described matrix 44 form the bottom routing layer of four-layer circuit board.
Wherein, described matrix 44 includes but is not limited to synthetic fibers substrate, glass cloth base substrate and ceramic substrate.
For example, the coupler 2 can be by low temperature co-fired when the described matrix 44 of the connecting plate 4 is using ceramic substrate
Ceramic (low temperature co-fired ceramic, LTCC) technology is molded directly in described matrix 44.
In other embodiments, the coupler 2 can be discrete device.The coupler 2 can be solid by modes such as welding
Due on the connecting plate 4.
Referring to Figure 6 together, Fig. 8 and Figure 10, Figure 10 are the package assemblies of structure shown in circulator 1 shown in Fig. 5 and Fig. 8
Schematic diagram.
The connecting plate 4 is fixed on the top end face 12 of circulator 1 by fastener.Alternatively, the connecting plate 4 passes through welding
Or the mode of high temperature glue sticking is fixed on the top end face 12 of circulator 1.The connecting plate 4 is fixed to the top of the circulator 1
The mode in face 12 can be according to being selected.
For example, multiple first fixation holes 131 can be formed on the circulator 1 when using fastener connection type.It is described
First fixation hole 131 can be provided on the pedestal 13.Multiple second fixation holes 47 are formed on the connecting plate 4.Described
Two fixation holes 47 run through the connecting plate 4.Multiple fasteners 6 (such as screw) connect multiple first fixation holes 131 correspondingly
With multiple second fixation holes 47, the connecting plate 4 is locked on the circulator 1.In other embodiments, fastener 6
Bolt, rivet etc. can also be used.
Wherein, fastener 6 uses conductor material, can be realized electric connection.Fastener 6 connects the connecting plate 4 and institute
State the pedestal 13 of circulator 1.Fastener 6 can connect (and the earthing block of the grounding electrode 43 on the connecting plate 4
46).When the pedestal 13 is grounded, the circulator 1 and the connecting plate 4 can be grounded continuously by fastener 6.
The connection signal pin 15 protrudes into the connection signal hole 443 and contacts the connection pin 45.Wherein, described
It connects pin 45 and is equipped with jack 451, the connection signal pin 15 protrudes into the jack 451 to contact the connection pin
45.Wherein, described matrix 44 is equipped with coupling jack 445, and the coupled signal pin 18 of the circulator 1 is inserted into the coupling
Jack 445 is closed, to contact the coupled pin 22.
Figure 11 is please referred to, Figure 11 is the structural schematic diagram of connector 3 in Fig. 4.
The connector 3 includes the signal pin 31 and insulation sleeve 32.The signal pin 31 is sheathed on the insulation sleeve 32
It is interior, and the both ends of the signal pin 31 protrude from the both ends of the surface 321 of the insulation sleeve 32.In present embodiment, the insulation
Set 32 electrically isolates between the signal pin 31 and the conductor sleeve 5 to realize.The both ends of the signal pin 31
The both ends of the surface 321 of the relatively described insulation sleeve 32 are protruded, thus preferably with other component (such as the activation signal pin 41, institute
State antenna feeder plate 50) it is in contact, guarantee to be electrically connected reliability.
Referring to Figure 4 together and Figure 12, Figure 12 be radio frequency link 500 shown in Fig. 4 part-structure partial schematic diagram.
The conductor sleeve 5 passes through the affixed shielding case 60 of bracket 7.Wherein, the circuit board 40, the antenna feeder plate 50
And can be fixed by fasteners such as such as screws between the shielding case 60, it can also be solid by modes such as welding, conductive adhesives
It is fixed.The conductor sleeve 5, the bracket 7 and the shielding case 60 can be integrally formed.
Wherein, conductive adhesive layer or elastic conductor 51 are equipped between the conductor sleeve 5 and the grounding electrode 43.It is described to lead
Electric glue-line or elastic conductor 51 are for improving the reliability that the conductor sleeve 5 is contacted with the grounding electrode 43.The elasticity
Conductor can be metal spring leaf.The elastic conductor can be fixed by welding manner.
Wherein, the conductor sleeve 5 includes the top surface 52 and bottom surface 53 being disposed opposite to each other.The bottom surface 53 of the conductor sleeve 5
Support the grounding electrode 43.Conductive adhesive layer or elastic conductor 51 can be set to the conductor sleeve 5 bottom surface 53 and the ground connection
Between electrode 43.It may also set up conductive adhesive layer or elastic conductor between the top surface 52 of the conductor sleeve 5 and the antenna feeder plate 50.
The bottom surface 53 of the conductor sleeve 5 sets groove 54, which is used to avoid the signal lead on the connecting plate 4
(such as described transmission cabling 42).The top surface 52 of the conductor sleeve 5 sets groove 55, and the groove 55 is for avoiding antenna feeder plate 50
Signal lead.
Wherein, the inner cavity (for accommodating the space of the connector 3) of the conductor sleeve 5 and be set to the conductor sleeve
5 bottom surface 53 and the groove (54,55) of top surface 52, can be formed by milling process.
Figure 13 is please referred to, Figure 13 is knot when radio frequency link 500 shown in multiple Fig. 3 provided by the present application is assembled into total module
Structure schematic diagram.
The quantity of the radio frequency link 500 is multiple.Multiple radio frequency links 500 are assembled into total module 600.When multiple
The assembling of radio frequency link 500 is formed by total module 600 applied to the extensive multiple-input, multiple-output of 5G (massive MIMO, MM) system
When system, with the extensive mimo systems of 5G being obviously improved in terms of capacity and covering, the radio-frequency channel number of total module 600
Amount is also increasing.
Wherein, the circuit board 40 of multiple radio frequency links 500 is integrally formed.That is, multiple radio frequency links 500 can
To share the big first circuit board 70 of an area, multiple modules for being equivalent to circuit board 40 are integrated in first circuit board 70.
The antenna feeder plate 50 of multiple radio frequency links 500 can also be integrally formed.That is, multiple radio frequency links 500 can share one
Area big second circuit board 80 is integrated with multiple modules for being equivalent to antenna feeder plate 50 in second circuit board 80.At this point, multiple penetrate
The radio frequency transmission module 20 (refering to Fig. 4) of frequency link 500 is arranged in integrated first circuit board 70 and one at each interval
Between second circuit board 80.The shielding case 60 of each radio frequency link 500 can be avoided the radio frequency of different radio frequency link 500
Transmission module 20 interferes with each other.
In the present embodiment, the first circuit that multiple radio frequency links 500 can be big with common space in total module 600
Plate 70 and second circuit board 80, and first circuit board 70 is divided into different modules, second circuit board 80 be divided into it is different
Module, to meet the needs of different radio frequency link 500.In this way, always between the different radio frequency link 500 in module 600
It arranges more compact, so that the available reasonable control of volume of total module 600, so that the overall volume of total module 600 is smaller.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application should be subject to the protection scope in claims.
Claims (11)
1. a kind of radio frequency transmission module characterized by comprising
Circulator, between the circuit board and connecting plate of radio frequency link, the circulator includes opposite bottom face and top
Face, the bottom face are in contact with a plate face of the circuit board, and the top end face is in contact with a plate face of the connecting plate；
The connecting plate includes activation signal pin, transmission cabling and grounding electrode, and the transmission cabling is connected to described go in ring
Between device and the activation signal pin, the grounding electrode is arranged around the activation signal pin and the transmission cabling；
Coupler, set on the plate face of the connecting plate, and for being coupled in the radiofrequency signal transmitted in the transmission cabling；
Conductor sleeve, the side positioned at the connecting plate far from the circulator, the conductor sleeve support the grounding electrode；
And
Connector is located inside the conductor sleeve, and the signal pin of the connector supports the activation signal pin.
2. radio frequency transmission module as described in claim 1, which is characterized in that the circulator includes center conductor and is connected to
The connection signal pin and input signal pin at center conductor unlike signal end, the connection signal pin is far from described
One end of heart conductor connects the transmission cabling, and the input signal pin connects the electricity far from one end of the center conductor
Road plate, radiofrequency signal can be transmitted to the connection signal pin through the input signal pin from the circuit board.
3. radio frequency transmission module as claimed in claim 2, which is characterized in that the connecting plate further includes that matrix and connection are drawn
Foot, described matrix include the bottom surface towards the circulator and the top surface far from the circulator, the activation signal pin, institute
State transmission cabling and the connection pin be located at the top surface of described matrix, the transmission cabling connection connection pin with it is described
Activation signal pin.
4. radio frequency transmission module as claimed in claim 3, which is characterized in that the coupler be located at described matrix top surface or
Bottom surface.
5. radio frequency transmission module as claimed in claim 4, which is characterized in that the coupler include load, coupled pin and
The microstrip line being connected between load and coupled pin, the coupled pin is for being electrically connected the circuit board.
6. radio frequency transmission module as claimed in claim 5, which is characterized in that the circulator further includes coupled signal pin,
The coupled signal pin is electrically isolated with the center conductor, and one end of the coupled signal pin connects the circuit board,
The other end of the coupled signal pin connects the coupled pin.
7. the radio frequency transmission module as described in any one of claim 2 to 6, which is characterized in that the circulator further includes defeated
Signal pins out, one end of the output signal pin connect the center conductor, and the other end of the output signal pin connects
The circuit board is connect, radiofrequency signal can be transmitted to the circuit through the output signal pin from the connection signal pin
Plate.
8. a kind of radio frequency link, which is characterized in that including any in signal amplification module, antenna feeder module and such as claim 1 to 7
Radio frequency transmission module described in, the signal amplification module are used to amplify the power of radiofrequency signal, and the antenna feeder module is used for
Transmitting receives radiofrequency signal, and the radio frequency transmission module is between the signal amplification module and the antenna feeder module, institute
The circulator for stating radio frequency transmission module is connect with the signal amplification module, the signal pin of the connector of the radio frequency transmission module
Connect the antenna feeder module.
9. radio frequency link as claimed in claim 8, which is characterized in that the signal amplification module includes power amplifier, function
Rate coupler and low noise amplifier, the power coupler are connected to the input signal of the power amplifier Yu the circulator
Between pin, the low noise amplifier connects the output signal pin of the circulator.
10. radio frequency link as claimed in claim 8 or 9, which is characterized in that the radio frequency link further includes shielding case, described
Shielding case is between the circuit board and antenna feeder plate, for surrounding the radio frequency transmission module.
11. a kind of communication apparatus, which is characterized in that including any in baseband chip and one or more such as claims 8 to 10
The signal amplification module of radio frequency link described in, the radio frequency link is electrically connected the baseband chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821007150.5U CN208572082U (en) | 2018-06-27 | 2018-06-27 | Radio frequency transmission module, radio frequency link and communication apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821007150.5U CN208572082U (en) | 2018-06-27 | 2018-06-27 | Radio frequency transmission module, radio frequency link and communication apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN208572082U true CN208572082U (en) | 2019-03-01 |
Family
ID=65489174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821007150.5U Active CN208572082U (en) | 2018-06-27 | 2018-06-27 | Radio frequency transmission module, radio frequency link and communication apparatus |
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| CN (1) | CN208572082U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635291A (en) * | 2019-03-29 | 2019-12-31 | 中航光电科技股份有限公司 | Radio frequency backboard and backboard assembly |
| CN111601493A (en) * | 2020-06-28 | 2020-08-28 | 深圳市速联技术有限公司 | Method and device for protecting strong electromagnetic pulse of radio frequency link |
| WO2022074425A1 (en) * | 2020-10-05 | 2022-04-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Proximity rf connector (prf) |
-
2018
- 2018-06-27 CN CN201821007150.5U patent/CN208572082U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635291A (en) * | 2019-03-29 | 2019-12-31 | 中航光电科技股份有限公司 | Radio frequency backboard and backboard assembly |
| CN111601493A (en) * | 2020-06-28 | 2020-08-28 | 深圳市速联技术有限公司 | Method and device for protecting strong electromagnetic pulse of radio frequency link |
| CN111601493B (en) * | 2020-06-28 | 2021-02-23 | 深圳市速联技术有限公司 | Method and device for protecting strong electromagnetic pulse of radio frequency link |
| WO2022074425A1 (en) * | 2020-10-05 | 2022-04-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Proximity rf connector (prf) |
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Effective date of registration: 20211224 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: Super fusion Digital Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |