CN209691919U - Cavity body filter and communication radio frequency device - Google Patents
Cavity body filter and communication radio frequency device Download PDFInfo
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- CN209691919U CN209691919U CN201822090513.2U CN201822090513U CN209691919U CN 209691919 U CN209691919 U CN 209691919U CN 201822090513 U CN201822090513 U CN 201822090513U CN 209691919 U CN209691919 U CN 209691919U
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Abstract
This application discloses a kind of cavity body filter and communication radio frequency devices, the public resonant cavity that the cavity body filter includes transmitting unit and receiving unit and is connected to them, transmitting unit includes the capacitive zero point being formed by sheet metal, public resonant cavity and first port couple, the second end and second port of transmitting unit couple, the second end and third port of receiving unit couple, and receiving unit receives signal from first or third port, and transmitting unit exports signal from first port or second port.The structure of the cavity body filter of the application is simple, small in size, index is functional, processing technology is simple, productivity effect is high.
Description
Technical field
This application involves filter field more particularly to a kind of cavity body filters and communication radio frequency device.
Background technique
In the base station system of mobile communication, the carrying in particular frequency range is usually emitted by transmitting antenna and communicates number
According to signal of communication, and signal of communication is received by receiving antenna.By not only including above-mentioned spy in receiving antenna received signal
Determine in frequency range carrying communication data signal of communication, but also including outside many above-mentioned particular frequency ranges clutter or
Interference signal.Number is communicated from the carrying obtained in the particular frequency range that transmitting antenna emits in receiving antenna received signal
According to signal of communication, it usually needs the receiving antenna received signal is filtered by filter, by the carrying communicate number
According to signal of communication specific frequency outside clutter or interference signal filter out.Duplexer filter device is the important component of communication system.
Currently, cavity duplexer filter is generallyd use in base station system, when only the signal of a certain frequency range being allowed to pass through,
Usually select bandpass filter.In the base station system, there is certain requirement in the shape of product, volume, then for filtering
Row's chamber also brings some challenges inside device, realizes that the index request of filter is also particularly important using special construction.Meanwhile for
Under some particular surroundings, it is also necessary to guarantee good performance, such as: low radio frequency Insertion Loss, high intermodulation, light-weight, high power, highly reliable
Property etc..
Summary of the invention
The application is mainly solving the technical problems that provide a kind of cavity body filter and communication radio frequency device, cavity filtering
The structure of device is simple, small in size, index is functional, processing process is simple, debugging is simple, improves productivity effect.
In order to solve the above technical problems, the technical solution that the application uses is:
A kind of cavity body filter is provided, the cavity body filter include transmitting unit and receiving unit and with the transmitting
The public resonant cavity that unit is connected to the receiving unit, the transmitting unit include the capacitive zero point being formed by sheet metal, institute
The first end for stating public resonant cavity and first port, the first end of the transmitting unit and the receiving unit couples, the hair
The second end and second port for penetrating unit couple, and the second end and third port of the receiving unit couple, the receiving unit
For receiving signal from the first port or the third port, the transmitting unit is used for signal from the first port
Or the second port output.
In order to solve the above technical problems, another technical solution that the application uses is:
A kind of communication radio frequency device is provided, the radio-frequency devices include cavity body filter described herein, wherein cavity
Filter is set to the transceiver circuit part of radio-frequency devices, for selecting signal.
The beneficial effect of the application is: being different from the prior art, the cavity body filter of the application includes transmitting unit and connects
Unit, and the public resonant cavity being connected to the transmitting unit with the receiving unit are received, to realize that signal is non-interfering
It receives and emits simultaneously, the public resonant cavity and first port, the first end of the transmitting unit and the receiving unit
First end coupling, the second end of the transmitting unit and second port couple, the second end of the receiving unit and third end
Mouth coupling, the receiving unit are used to receive signal from the first port or the third port, and the transmitting unit is used for
Signal is exported from the first port or the second port, the transmitting unit includes the capacitive zero being formed by sheet metal
Point.The structure of the cavity body filter of the application is simple, small in size, index is functional, processing process is simple, debugging is simple
It is single, improve productivity effect.
Detailed description of the invention
Fig. 1 is the circuit connection diagram of the cavity body filter first embodiment of the application；
Fig. 2 is the circuit connection diagram of the cavity body filter second embodiment of the application；
Fig. 3 is the circuit connection diagram of the cavity body filter 3rd embodiment of the application；
Fig. 4 a~Fig. 4 e is the structural schematic diagram of the cavity body filter 3rd embodiment of the application；
Fig. 5 is the schematic diagram of the section structure of the metal resonators in the cavity body filter 3rd embodiment of the application；
Fig. 6 is the topological structure schematic diagram of the cavity body filter 3rd embodiment of the application；
Fig. 7 is the structural schematic diagram of the communication radio frequency device of the application.
Specific embodiment
The application provides a kind of cavity body filter and communication radio frequency device, for the purpose, technical solution and skill for making the application
Art effect definitely, it is clear, the application is described in further detail below, it is clear that described embodiment is only this Shen
Please a part of the embodiment, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, the range of the application protection is belonged to.
Referring to Fig. 1, being the circuit connection diagram of the cavity body filter first embodiment of the application.The cavity filtering
Device include transmitting unit TX and the first receiving unit RX-1 and with the transmitting unit TX and the first receiving unit RX-1
First public resonant cavity 1 of connection.
Wherein, the transmitting unit TX include the first resonant cavity 101, the second resonant cavity 102, third resonant cavity 103 and
4th resonant cavity 104, wherein connected between first resonant cavity 101 and second resonant cavity 102 by the second window 12
It is logical, it is connected between second resonant cavity 102 and the third resonant cavity 103 by the second window 12, the third resonant cavity
It is connected between 103 and the 4th resonant cavity 104 by the second window 12, second resonant cavity 102 and the 4th resonance
It is connected between chamber 104 by sheet metal 13；
The first receiving unit RX-1 includes the 5th resonant cavity 105, the 6th resonant cavity 106, the 7th resonant cavity 107, the
Eight resonant cavities 108, the 9th resonant cavity 109 and the tenth resonant cavity 110, wherein the 5th resonant cavity 105 and the described 6th humorous
It shakes and is connected to by the second window 12 between chamber 106, by the between the 5th resonant cavity 105 and the 7th resonant cavity 107
The connection of one window 11, is connected between the 5th resonant cavity 105 and the 8th resonant cavity 108 by first window 11, described
It is connected between 7th resonant cavity 107 and the 8th resonant cavity 108 by the second window 12, the 7th resonant cavity 107 and institute
State and be connected between the 6th resonant cavity 106 by the second window 12, the 8th resonant cavity 108 and the 9th resonant cavity 109 it
Between by the second window 12 be connected to, between the 9th resonant cavity 109 and the tenth resonant cavity 110 by the second window 12 connect
It is logical；
First resonant cavity 101 is used as first as the first end of transmitting unit TX and the 5th resonant cavity 106
The first end of receiving unit RX-1 is connected to by the second window 12 with the described first public resonant cavity 1, the first public resonance
Chamber 1 and first port 100 couple, second end and second port 200 of the 4th resonant cavity 104 as the transmitting unit TX
Coupling, the tenth resonant cavity 110 is coupled as the second end and third port 300 of the first receiving unit RX-1, to realize
State the signal input and output of cavity body filter.
Wherein, the described first public resonant cavity 1 is coupled by tap line 14 and the first port 100, and the described 4th is humorous
The chamber 104 that shakes is coupled by tap line 14 and the second port 200, the tenth resonant cavity 110 by tap line 14 with it is described
Third port 300 couples, to realize the signal input and output of the cavity body filter.
The cavity body filter of the application, can due to including the transmitting unit TX and the first receiving unit RX-1 being spaced apart from each other
It receives and emits while realizing signal, and receive signal and transmitting signal and do not interfere with each other.First in the transmitting unit TX
Resonant cavity 101 is connected as the first end of the transmitting unit TX by second window 12 and the described first public resonant cavity 1
Logical, the first public resonant cavity 1 is coupled by tap line 14 and the first port 100, and the first port 100 is used as institute
The output port of transmitting unit TX signal is stated, the 4th resonant cavity 104 passes through pumping as the second end of the transmitting unit TX
Head line 14 and the second port 200 couple, and the second port 200 is the signal input port of the transmitting unit TX；Institute
The 5th resonant cavity 105 in the first receiving unit RX-1 is stated as the first end of the first receiving unit RX-1 by described the
Two windows 12 are connected to the described first public resonant cavity 1, and the first public resonant cavity 1 passes through tap line 14 and the first end
Mouth 100 couples, input port of the first port 100 as the first receiving unit RX-1 signal, the tenth resonance
Chamber 110 is coupled as the second end of the first receiving unit RX-1 by tap line 14 and third port 300, the third end
Mouth 300 is the signal output port of the first receiving unit RX-1.
In the present embodiment, when only carrying out the transmitting of signal, signal coupled transfer in transmitting unit TX.Specifically
Ground, by second port 200 transmit a signal to the 4th resonant cavity 104, through the 4th resonant cavity 104 and third resonant cavity 103 it
Between the second window 12, the second window 12 between third resonant cavity 103 and the second resonant cavity 102, the 4th resonant cavity 104 and
First window 11, the second resonant cavity 102 between two resonant cavities 102 and the second window 12, first between the first resonant cavity 101
The second window 12 between resonant cavity 101 and the first public resonant cavity 1 is passed after carrying out coupled transfer by the first public resonant cavity 1
It is defeated to arrive first port 100, signal transmitting is carried out by the first port 100.
When only carrying out the reception of signal, signal coupled transfer in the first receiving unit RX-1.Specifically, first end
Mouth 100 transmits a signal to the first public resonant cavity 1 by the second window 12, through the first public resonant cavity 1 and the 5th resonant cavity
The second window 12 between the second window 12, the 5th resonant cavity 106 and the 6th resonant cavity 106, the 6th resonant cavity between 105
First window between 106 and the 7th the second window 12, the 5th resonant cavity 105 and the 7th resonant cavity 107 between resonant cavity 107
11, first window 11, the 7th resonant cavity 107 and the 8th resonant cavity 108 between the 5th resonant cavity 105 and the 8th resonant cavity 108
Between the second window 12, the second window 12 between the 8th resonant cavity 108 and the 9th resonant cavity 109, the 9th resonant cavity 109 with
Third port is transferred to by the tenth resonant cavity 110 after the second window 12 progress coupled transfer between tenth resonant cavity 110
300, signal reception is carried out by the third port 300.
When carrying out the reception and transmitting of signal simultaneously, the signal inputted through second port 200 is transferred to the 4th resonant cavity
104, in transmitting unit TX after coupled transfer, it is transferred to the first public resonant cavity 1 through the first resonant cavity 101, passes through the first public affairs
Resonant cavity 1 transfers signals to first port 100 altogether, carries out signal transmitting by first port 100；At the same time, through first
The signal that port 100 inputs is transferred to the first public resonant cavity 1, is transferred to the 5th resonant cavity 105 through the first public resonant cavity 1,
In the first receiving unit RX-1 after coupled transfer, third port 300 is transferred to by the tenth resonant cavity 110, passes through described
Three ports 300 carry out signal reception.
In the present embodiment, the first window 11 and second window 12 indicate that a kind of connection between resonant cavity is closed
System, by adjusting the size of the window, between the second resonant cavity 102 and the 4th resonant cavity 104 in the transmitting unit TX
It is coupled by sheet metal 13 and realizes a capacitive transmission zero, carry out the cross-coupling transmission of signal, first receiving unit
The 5th resonant cavity 105 in RX-1 and between the 7th resonant cavity 107 and between the 5th resonant cavity 105 and the 8th resonant cavity 108
A perceptual transmission zero is respectively realized by first window 11, carries out the cross-coupling transmission of signal, to realize the cavity filter
The structure of wave device is simple, small in size, index is functional, processing process is simple, debugging is simple, improves the mesh of productivity effect
's.
Referring to Fig. 2, being the circuit connection diagram of cavity body filter second embodiment provided by the present application.The cavity
Filter include transmitting unit TX and the second receiving unit RX-2 and with the transmitting unit TX and second receiving unit
Second public resonant cavity 2 of RX-2 connection.
Wherein, the transmitting unit TX include the first resonant cavity 101, the second resonant cavity 102, third resonant cavity 103 and
4th resonant cavity 104 is connected between first resonant cavity 101 and second resonant cavity 102 by the second window 12, described
It is connected between second resonant cavity 102 and the third resonant cavity 103 by the second window 12, the third resonant cavity 103 and institute
State and be connected between the 4th resonant cavity 104 by the second window 12, second resonant cavity 102 and the 4th resonant cavity 104 it
Between be connected to by sheet metal 13；
The second receiving unit RX-2 includes the 11st resonant cavity 111, the 12nd resonant cavity 112, the 13rd resonant cavity
113, the 14th resonant cavity 114, the 15th resonant cavity 115 and the 16th resonant cavity 116, wherein the 11st resonant cavity
111 are connected to by second window 12 with the 12nd resonant cavity 112, and the 12nd resonant cavity 112 passes through described the
Two windows 12 are connected to the 13rd resonant cavity 113, the 13rd resonant cavity 113 by second window 12 with it is described
The connection of 14th resonant cavity 114, the 14th resonant cavity 114 pass through second window 12 and the 15th resonant cavity
115 connections, the 13rd resonant cavity 113 are connected to by the first window 11 with the 15th resonant cavity 115, and described the
15 resonant cavities 115 are connected to by second window 12 with the 16th resonant cavity 116；
4th resonant cavity 104 is as the first end of transmitting unit TX and the 11st resonant cavity 111 as the
The first end of two receiving unit RX-2 is connected to by the second window 12 with the described second public resonant cavity 2, and described second is public humorous
The chamber 2 that shakes is coupled with first port 100, second end and second port of first resonant cavity 101 as the transmitting unit RX
200 couplings, second end and third port coupling 300 of the 16th resonant cavity 116 as the second receiving unit RX-2,
To realize the signal input and output of the cavity body filter.
Wherein, the described second public resonant cavity 2 is coupled by tap line 14 and the first port 100, and described first is humorous
The chamber 101 that shakes is coupled by tap line 14 and the second port 200, and the 16th resonant cavity 116 passes through tap line 14 and institute
The coupling of third port 300 is stated, to realize the signal input and output of the cavity body filter.
The cavity body filter of the application, can due to including the transmitting unit TX and the second receiving unit RX-2 being spaced apart from each other
It receives and emits while realizing signal, and receive signal and transmitting signal and do not interfere with each other.The 4th in the transmitting unit TX
Resonant cavity 104 is connected as the first end of the transmitting unit TX by second window 12 and the described second public resonant cavity 2
Logical, the second public resonant cavity 2 is coupled by tap line 14 and the first port 100, and the first port 100 is used as institute
The output port of transmitting unit TX signal is stated, first resonant cavity 101 passes through pumping as the second end of the transmitting unit TX
Head line 14 and the second port 200 couple, and the second port 200 is the signal input port of the transmitting unit TX；Institute
State the 11st resonant cavity 111 in the second receiving unit RX-2 pass through as the first end of the second receiving unit RX-2 it is described
Second window 12 is connected to the described second public resonant cavity 2, and the second public resonant cavity 2 passes through tap line 14 and described first
Port 100 couples, input port of the first port 100 as the second receiving unit RX-2 signal, and the described 16th
Resonant cavity 116 is coupled as the second end of the second receiving unit RX-2 by tap line 14 and third port 300, and described the
Three ports 300 are the signal output port of the second receiving unit RX-2.
In the present embodiment, when only carrying out the transmitting of signal, signal coupled transfer in transmitting unit TX.Specifically
Ground, second port 200 transmits a signal to the first resonant cavity 101 by the second window 12, humorous through the first resonant cavity 101 and second
The second window 12, the second resonant cavity 102 between vibration chamber 102 and the second window 12 between third resonant cavity 103, third resonance
The first window between the second window 12, the 4th resonant cavity 104 and the second resonant cavity 102 between chamber 103 and the 4th resonant cavity 104
It is public by second after the second window 12 progress coupled transfer between the 11, the 4th resonant cavity 104 of mouth and the second public resonant cavity 2
Resonant cavity 2 is transferred to first port 100, carries out signal transmitting by the first port 100.
When only carrying out the reception of signal, signal coupled transfer in the second receiving unit RX-2.Specifically, first end
Mouth 100 transmits a signal to the second public resonant cavity 2 by the second window 12, through the second public 2 and the 11st resonance of resonant cavity
The second window the 12, the 12nd between the second window 12, the 11st resonant cavity 111 and the 12nd resonant cavity 112 between chamber 111
The second window 12, the 13rd resonant cavity 113 and the 14th resonant cavity 114 between resonant cavity 112 and the 13rd resonant cavity 113 it
Between the second window 12, the first window 11 between the 13rd resonant cavity 113 and the 15th resonant cavity 115, the 15th resonant cavity
The second window 12 between 115 and the 16th resonant cavity 116 carries out being transferred to the by the 16th resonant cavity 116 after coupled transfer
Three ports 300 carry out signal reception by the third port 300.
When carrying out the reception and transmitting of signal simultaneously, the signal inputted through second port 200 is transferred to the first resonant cavity
101, in transmitting unit TX after coupled transfer, it is transferred to the second public resonant cavity 2 through the 4th resonant cavity 104, passes through the second public affairs
Resonant cavity 2 transfers signals to first port 100 altogether, carries out signal transmitting by first port 100；At the same time, through first
The signal that port 100 inputs is transferred to the second public resonant cavity 2, is transferred to the 11st resonant cavity through the second public resonant cavity 2
111, in the second receiving unit RX-2 after coupled transfer, third port 300 is transferred to by the 16th resonant cavity 116, is passed through
The third port 300 carries out signal reception.
In the present embodiment, the first window 11 and second window 12 indicate that a kind of connection between resonant cavity is closed
System, by adjusting the size of the window, between the second resonant cavity 102 and the 4th resonant cavity 104 in the transmitting unit TX
It is coupled by sheet metal 13 and realizes a capacitive transmission zero, carry out the cross-coupling transmission of signal, second receiving unit
The 13rd resonant cavity 113 in RX-2 and between the 15th resonant cavity 115 by first window 11 realize one perception transmission zero
Point carries out the cross-coupling transmission of signal, the structure to realize the cavity body filter is simple, small in size, index is functional,
Processing process is simple, debugging is simple, improves the purpose of productivity effect.
Referring to Fig. 3, be the circuit connection diagram of cavity body filter 3rd embodiment provided by the present application, it is real with first
It applies example (Fig. 1) to compare, cavity body filter described in the present embodiment further include:
Second receiving unit RX-2 and be connected to the second receiving unit RX-2 with the transmitting unit TX second
Public resonant cavity 2, the second receiving unit RX-2 are humorous including the 11st resonant cavity 111, the 12nd resonant cavity the 112, the 13rd
Shake chamber 113, the 14th resonant cavity 114, the 15th resonant cavity 115 and the 16th resonant cavity 116, the 11st resonant cavity
111 are connected to by second window 12 with the 12nd resonant cavity 112, and the 12nd resonant cavity 112 passes through described the
Two windows 12 are connected to the 13rd resonant cavity 113, the 13rd resonant cavity 113 by second window 12 with it is described
The connection of 14th resonant cavity 114, the 14th resonant cavity 114 pass through second window 12 and the 15th resonant cavity
115 connections, the 13rd resonant cavity 113 are connected to by the first window 11 with the 15th resonant cavity 115, and described the
15 resonant cavities 115 are connected to by second window 12 with the 16th resonant cavity 116.
First end and described second public resonance of 11st resonant cavity 111 as the second receiving unit RX-2
Chamber 2 is connected to by the second window 12, and the second public resonant cavity 2 is coupled with the second port 200, the 16th resonance
Chamber 116 is coupled as the second end of the second receiving unit RX-2 and the 4th port 400, to realize the cavity body filter
Signal input and output.
Wherein, the described first public resonant cavity 1 is coupled by tap line 14 and the first port 100, and described second is public
Resonant cavity 2 is coupled by tap line 14 and the second port 200 altogether, and the tenth resonant cavity 110 passes through tap line 14 and institute
The coupling of third port 300 is stated, the 16th resonant cavity 116 is coupled by tap line 14 and the 4th port 400, to realize
The signal input and output of the cavity body filter.
Tap line 14 in the present embodiment is quarter-wave tap line, and the sheet metal 13 is copper.
The cavity body filter of the application due to including the transmitting unit TX and the first receiving unit RX-1 that are spaced apart from each other, and
Second receiving unit RX-2 is received and is emitted while can be realized signal, and is received signal and emitted signal and do not interfere with each other.Institute
The first resonant cavity 101 stated in transmitting unit TX passes through second window 12 and institute as the first end of the transmitting unit TX
It states the first public resonant cavity 1 to be connected to, the first public resonant cavity 1 is coupled by tap line 14 and the first port 100, institute
Output port of the first port 100 as the transmitting unit TX signal is stated, the 4th resonant cavity 104 is single as the transmitting
The second end of first TX is connected to by the second window 12 with second common cavity 2, and the second public resonant cavity 2 passes through tap line
14 couple with the second port 200, and the second port 200 is the signal input port of the transmitting unit RX；Described
The 5th resonant cavity 105 in one receiving unit RX-1 passes through the second window 12 as the first end of the first receiving unit RX-1
It is connected to the described first public resonant cavity 1, the first public resonant cavity 1 passes through tap line 14 and 100 coupling of first port
It connects, input port of the first port 100 as the first receiving unit RX-1 signal, the tenth resonant cavity 110 is made
It is connect for described first and penetrates the second end of unit R X-1 and coupled by tap line 14 and the third port 300, the third port
300 be the signal output port of the first receiving unit RX-1；The 11st resonant cavity in the second receiving unit RX-2
111 are connected to by the second window 12 with the described second public resonant cavity 2 as the first end of the second receiving unit RX-2, institute
It states the second public resonant cavity 2 to couple by tap line 14 and the second port 200, the second port 200 is as described the
The input port of two receiving unit RX-2 signals, the 16th resonant cavity 116 connects as described second penetrates the of unit R X-2
Two ends are coupled by tap line 14 and the 4th port 400, and the 4th port 400 is the second receiving unit RX-2's
Signal output port.
In the present embodiment, the first window 11 and second window 12 indicate that a kind of connection between resonant cavity is closed
System, by adjusting the size of the window, between the second resonant cavity 102 and the 4th resonant cavity 104 in the transmitting unit TX
It is coupled by sheet metal 13 and realizes a capacitive transmission zero, carry out the cross-coupling transmission of signal, first receiving unit
The 5th resonant cavity 105 in RX-1 and between the 7th resonant cavity 107 and between the 5th resonant cavity 105 and the 8th resonant cavity 108
A perceptual transmission zero, the 13rd resonant cavity 113 in the second receiving unit RX-2 are respectively realized by first window 11
Realize that a perceptual transmission zero, the cross-coupling for carrying out signal pass by first window 11 between the 15th resonant cavity 115
Defeated, to realize the specified index performance of the cavity body filter, and structure is simple, small in size, processing process is simple, adjusts
Examination is simple, improves the purpose of productivity effect.
In the present embodiment, when only carrying out the transmitting of signal, signal coupled transfer in transmitting unit TX.Specifically
Ground transmits a signal to the second public resonant cavity 2 by second port 200, through between the second common cavity and the 4th resonant cavity 104
The second window 12, the second window 12 between the 4th resonant cavity 104 and third resonant cavity 103, third resonant cavity 103 and second
The first window 11, second between the second window 12, the 4th resonant cavity 104 and the second resonant cavity 102 between resonant cavity 102 is humorous
The between the second window 12, the first resonant cavity 101 and the first public resonant cavity 1 to shake between chamber 102 and the first resonant cavity 101
First port 100 is transferred to by the first public resonant cavity 1 after two windows 12 progress coupled transfer, passes through the first port
100 carry out signal transmitting.
When only carrying out the reception of signal, signal is only coupled in the first receiving unit RX-1 and the second receiving unit RX-2
Transmission.Specifically, first port 100 transmits a signal to the first public resonant cavity 1 by the second window 12, public humorous through first
The second window between the second window 12, the 5th resonant cavity 106 and the 6th resonant cavity 106 to shake between chamber 1 and the 5th resonant cavity 105
The second window 12, the 5th resonant cavity 105 and the 7th resonant cavity between the 12, the 6th resonant cavity 106 of mouth and the 7th resonant cavity 107
First window 11, the 5th resonant cavity 105 between 107 and the first window 11 between the 8th resonant cavity 108, the 7th resonant cavity
The second window between 107 and the 8th the second window 12, the 8th resonant cavity 108 and the 9th resonant cavity 109 between resonant cavity 108
12, the second window 12 between the 9th resonant cavity 109 and the tenth resonant cavity 110 passes through the tenth resonant cavity after carrying out coupled transfer
110 are transferred to third port 300, carry out signal reception by the third port 300；Second port 200 passes through the second window
12 transmit a signal to the second public resonant cavity 2, through the second window between the second public 2 and the 11st resonant cavity 111 of resonant cavity
The second window 12, the 12nd resonant cavity 112 and the 13rd between the 12, the 11st resonant cavity 111 of mouth and the 12nd resonant cavity 112
The second window 12, the 13rd resonant cavity 113 between resonant cavity 113 and the second window 12 between the 14th resonant cavity 114,
First window 11, the 14th resonant cavity 114 and the 15th resonant cavity between 13 resonant cavities 113 and the 15th resonant cavity 115
The second window 12 between the second window 12, the 15th resonant cavity 115 and the 16th resonant cavity 116 between 115 is coupled
The 4th port 400 is transferred to by the 16th resonant cavity 116 after transmission, signal reception is carried out by the 4th port 400.
When carrying out the reception and transmitting of signal simultaneously, it is public humorous that the signal inputted through second port 200 is transferred to second
Shake chamber 2, is transferred to the 4th resonant cavity 104 through the second public resonant cavity 2, humorous through first in transmitting unit TX after coupled transfer
Vibration chamber 101 is transferred to the first public resonant cavity 1, transfers signals to first port 100 by the first public resonant cavity 1, passes through
First port 100 carries out signal transmitting；At the same time, the signal inputted through first port 100 is transferred to the first public resonant cavity
1, it is transferred to the 5th resonant cavity 105 through the first public resonant cavity 1, in the first receiving unit RX-1 after coupled transfer, passes through
Ten resonant cavities 110 are transferred to third port 300, carry out signal reception by the third port 300；It is defeated through second port 200
The signal entered is transferred to the second public resonant cavity 2, is transferred to the 11st resonant cavity 111 through the second public resonant cavity 2, connects second
In receipts unit R X-2 after coupled transfer, the 4th port 400 is transferred to by the 16th resonant cavity 116, passes through the 4th port
400 carry out signal reception.
Fig. 4 a~Fig. 4 e is please referred to, is the structural schematic diagram of the application cavity body filter 3rd embodiment.Fig. 4 a is this Shen
Please in cavity body filter transmitting unit TX interior resonance chamber attachment structure schematic diagram, wherein the transmitting unit TX include first to
4th resonant cavity 101~104, Fig. 4 b are the connection structure of the first receiving unit RX-1 interior resonance chamber in the application cavity body filter
Schematic diagram, wherein the first receiving unit RX-1 includes the 5th to the tenth resonant cavity 105~110, Fig. 4 c is the application cavity
The connection structure of resonant cavity is illustrated in the first public resonant cavity 1 and transmitting unit TX and the first receiving unit RX-1 in filter
Figure；Fig. 4 d is the attachment structure schematic diagram of the second receiving unit RX-2 interior resonance chamber in the application cavity body filter, wherein described
Second receiving unit RX-2 includes the 11st to the 16th resonant cavity 111~116, and Fig. 4 e is second in the application cavity body filter
The attachment structure schematic diagram of resonant cavity, only provides herein in public resonant cavity 2 and transmitting unit TX and the second receiving unit RX-2
Partially connected architecture schematic diagram, specific same Fig. 3 of connection relationship are not described in detail herein.
The cavity body filter includes cover board 117, cavity wall 118, and the cover board 117 is equipped with cover board screw hole 119, described
Cavity wall 118 has certain wall thickness, is correspondingly arranged on cavity wall screw hole (not shown go out), and screw 120 passes through the cover board screw hole
119 and the cavity wall screw hole with the fixation cover board 117.
In the present embodiment, especially by setting cavity wall 118 by transmitting unit TX and the first receiving unit RX-1 and the
Two receiving unit RX-2 are spaced apart, and separate the cavity body filter to form the resonant cavity, to realize non-interfering
Receiving simultaneously in other embodiments can also be by other means by transmitting unit and receiving unit interval with transmitting signal
It opens.
Wherein, the size of first to fourth resonant cavity 101~104 is in the transmitting unit TX
Wherein, 36mm is the diameter of resonant cavity, and 41mm is the height of resonant cavity；The first receiving unit RX-1 and second is received
The size of the 5th to the 16th resonant cavity 106~116 in unit R X-2 isWherein, 32mm is resonance
The diameter of chamber, 41mm are the height of resonant cavity；The size of the first public resonant cavity 1 and the second public resonant cavity 2 isWherein, 36mm is the diameter of resonant cavity, and 41mm is the height of resonant cavity.Certainly, resonant cavity
Size can be designed according to actual parameter index and actual conditions, and above-mentioned size is the cavity for combining present embodiment
The structure of filter provides an embodiment.
Wherein, the cavity body filter further includes the coupling screw rod 121 being arranged at first window 11 and the second window 12,
One end of the coupling screw rod 121 is connect by screw thread with the cover board screw hole 119, and the other end extends to the first window 11
In the second window 12, the depth extended in first window 11 and the second window 12 by adjusting coupling screw rod 121 is to adjust
Save the stiffness of coupling between two adjacent resonators.
Wherein, the coupling screw rod 121 in the present embodiment is metal Coupling screw rod.
Wherein, a resonator 10 is provided in each resonant cavity.
Wherein, the cavity body filter further includes the coupling muscle being arranged at the first window 11 and the second window 12
122, the coupling muscle 122 connects two adjacent resonators 10, and one end of the coupling screw rod 121 passes through screw thread and the cover board spiral shell
Hole 119 connects, and the other end extends in the coupling muscle 122, to enhance the stiffness of coupling between two neighboring resonant cavity, specifically
, setting couples muscle 122 to connect two resonance at the second window 12 between the second resonant cavity 102 and third resonant cavity 103
Intracavitary resonator 10, for enhancing the stiffness of coupling between the second resonant cavity 102 and third resonant cavity 103, in third resonance
Setting couples muscle 122 to connect the resonator in two resonant cavities at the second window 12 between chamber 103 and the 4th resonant cavity 104
10, it is humorous in the 5th resonant cavity 105 and the 7th for enhancing the stiffness of coupling between third resonant cavity 103 and the 4th resonant cavity 104
Setting coupling muscle 122 is at first window 11 between vibration chamber 107 to connect the resonator 10 in two resonant cavities, for enhancing the 5th
Stiffness of coupling between resonant cavity 105 and the 7th resonant cavity 107, between the first resonant cavity 101 and the first public resonant cavity 1
Setting coupling muscle 122 is at second window 12 to connect the resonator 10 in two resonant cavities, for enhancing the first resonant cavity 101 and the
Stiffness of coupling between one public resonant cavity 1, the second window 12 between the 5th resonant cavity 105 and the first public resonant cavity 1
Place's setting coupling muscle 122 is to connect the resonator 10 in two resonant cavities, for enhancing the 5th resonant cavity 105 and the first public resonance
Stiffness of coupling between chamber 1 is arranged at the second window 12 between the 4th resonant cavity 104 and the second public resonant cavity 2 and couples
Muscle 122 is to connect the resonator 10 in two resonant cavities, for enhancing between the 4th resonant cavity 104 and the second public resonant cavity 2
Stiffness of coupling, at the second window 12 between the 11st resonant cavity 111 and the second public resonant cavity 2 setting couple muscle 122 with
The resonator 10 in two resonant cavities is connected, it is strong for enhancing the coupling between the 11st resonant cavity 111 and the second public resonant cavity 2
Degree.In other embodiments, the coupling muscle 122 can also be set at other first windows 11 and/or the second window 12, had
Body is designed according to actual needs.
In the present embodiment, the cavity body filter include transmitting unit TX and receiving unit RX and with the transmitting unit
The public resonant cavity that TX is connected with receiving unit RX, the receiving unit RX include that the first receiving unit RX-1 and second receives list
First RX-2, the public resonant cavity include the first public resonance connecting with the transmitting unit TX with the first receiving unit RX-1
Chamber 1 and the second public resonant cavity 2 being connect with the transmitting unit TX with the second receiving unit RX-2, the transmitting unit TX
Including being respectively arranged with first to fourth resonant cavity 101~104 of a resonator 10 totally four resonant cavities, described first receive it is single
First RX-1 includes being respectively arranged with the 5th to the tenth resonant cavity 105~110 of a resonator 10 totally six resonant cavities, and described second
Receiving unit RX-2 includes being respectively arranged with the 11st to the 16th resonant cavity 111~116 of a resonator 10 totally six resonance
The humorous of different number can also be arranged in chamber and two public resonant cavities in transmitting unit and receiving unit in other embodiments
Shake chamber, is not specifically limited herein.
For the structure and size of the resonator 10 in clearly any of the above-described embodiment, referring to Fig. 5, Fig. 5 be Fig. 4 a~
The schematic diagram of the section structure of metal resonators in Fig. 4 e cavity body filter.
Wherein, the resonator 10 in the transmitting unit TX in first to fourth resonant cavity 101~104 is the first metal
Resonator；In the 5th to the 16th resonant cavity 105~116 in the first receiving unit RX-1 and the second receiving unit RX-2
Resonator 10 be the second metal resonators；Resonator 10 in the first public resonant cavity 1 and the second public resonant cavity 2
Be third metal resonators, first and second and third metallic resonator structure it is identical, size is different.Wherein, described
One and third metal resonators outer diameter be 21mm, internal diameter 8.4mm, be highly 19mm；Outside second metal resonators
Diameter is 25mm, internal diameter 10mm, is highly 20mm.In other embodiments, the transmitting unit TX and the first receiving unit RX-
1 and the second resonator 10 or ceramic resonator in receiving unit RX-2, it is designed according to actual conditions, does not do have herein
Body limits.
Wherein, cavity body filter is bandpass filter, the first metal resonators, the second metal resonators and third metal
Resonator is band-pass resonator.Bandpass filter refers to that the electromagnetic wave for allowing particular frequency range passes through, while shielding other
The filter of frequency range electromagnetic wave.In transmitting unit TX or the first receiving unit RX-1 or the second receiving unit RX-2, pass
The defeated electromagnetic wave to signal input port generally comprises the electromagnetic wave of particular frequency range He other frequency ranges, then humorous in band logical
After the interior coupled transfer for carrying out signal of the device that shakes, the electromagnetic wave through signal output port output is the electromagnetic wave of particular frequency range,
And the electromagnetic wave of other frequency ranges is filtered out, that is, realizes the screening to electromagnetic wave.
Wherein, the free transmission range of first metal resonators and third metal resonators is 935MHz~960MHz；Institute
The free transmission range for stating the second metal resonators is 890MHz~915MHz, the screening to electromagnetic wave is better achieved.
Wherein, the inside of first metal resonators and second metal resonators and third metal resonators is equal
It is provided with metal frequency modulation screw rod 15 (as shown in fig 4e), one end of the metal frequency modulation screw rod 15 passes through screw thread and the cover board spiral shell
Hole 119 connects, and the other end extends in the metal resonators 10, is extended to by the adjusting metal frequency modulation screw rod 15 described
Depth in metal resonators is to adjust the resonance frequencies of the metal resonators.
In order to intuitively show the structure of the cavity body filter in above embodiment, referring to Fig. 6, Fig. 6 is the filter of Fig. 3 cavity
The topological structure schematic diagram of wave device.
In conjunction with Fig. 3, Fig. 6 intuitively shows the connected relation in transmitting unit TX between four resonant cavities, and first receives
Connected relation in unit R X-1 and the second receiving unit RX-2 between each six resonant cavities and with the first public resonant cavity 1 and
The connected relation of second public resonant cavity 2.Wherein, the first resonant cavity 101 and the first receiving unit RX- in transmitting unit TX
The 5th resonant cavity 105 in 1 is connected to the described first public resonant cavity 1, the first public resonant cavity 1 and first port 100
It couples, the 4th resonant cavity 104 in the transmitting unit TX and the 11st resonant cavity 111 and institute in the second receiving unit RX-2
It states the second public resonant cavity 2 to be connected to, the second public resonant cavity 2 is coupled with second port 200, first receiving unit
The tenth resonant cavity 110 in RX-1 is coupled with third port 300, the 16th resonant cavity in the second receiving unit RX-2
116 and the 4th port 400 couple, while to realize signal receive and transmitting.
In the present embodiment, cavity body filter 20 can simultaneously it is non-interfering carry out signal transmitting and reception, both
The requirement of index performance is considered, it is contemplated that the technique in production process such as processes at the complexities, so that processing, assembly, work
Skill process is simple, can improve production efficiency.
Referring to Fig. 7, being the structural schematic diagram of the communication radio frequency device of the application.The communication radio frequency device 21 includes above-mentioned
The cavity body filter 20 of any embodiment, the cavity body filter 20 are set to the transceiver circuit part of communication radio frequency device 21,
Signal is selected.
About the structure of cavity body filter, in conjunction with Fig. 1 to Fig. 6 and aforementioned text, detailed description is no longer superfluous herein
It states.
It is different from the prior art, the cavity body filter of the application includes that transmitting unit and the first receiving unit and second receive
Unit is able to achieve while signal is not interfere with each other and receives and emit.The second resonant cavity and the 4th resonant cavity in transmitting unit it
Between be connected to by sheet metal, signal input through the 4th resonant cavity, and by the resonant cavity of connection progress coupled transfer, and by first
Resonant cavity exports and realizes the transmitting of signal；The 5th resonant cavity in first receiving unit and between the 7th resonant cavity and the 5th is humorous
It shakes between chamber and the 8th resonant cavity and between the 13rd resonant cavity and the 15th resonant cavity in the second receiving unit by the
The connection of one window, signal is inputted through the first public resonant cavity and/or the second public resonant cavity, and is carried out by the resonant cavity of connection
Coupled transfer, and by the tenth resonant cavity and/or the 16th resonant cavity export and realize the reception of signal.The cavity of the application filters
The structure of device is simple, has preferable consistency and stability, meanwhile, processing technology is simple, convenient for batch production, can improve life
Produce efficiency.
The foregoing is merely presently filed embodiments, are not intended to limit the scope of patent protection of the application, all benefits
The equivalent structure or equivalent flow shift made by present specification and accompanying drawing content is applied directly or indirectly in other phases
The technical field of pass similarly includes in the scope of patent protection of the application.
Claims (10)
1. a kind of cavity body filter, which is characterized in that the cavity body filter include transmitting unit and receiving unit and with institute
The public resonant cavity that transmitting unit is connected to the receiving unit is stated, the transmitting unit includes the capacitive zero being formed by sheet metal
The first end of point, the public resonant cavity and first port, the first end of the transmitting unit and the receiving unit couples, institute
The second end and second port for stating transmitting unit couple, and the second end and third port of the receiving unit couple, the reception
Unit is used to receive signal from the first port or the third port, and the transmitting unit is used for signal from described first
Port or second port output.
2. cavity body filter according to claim 1, which is characterized in that the transmitting unit is humorous including being respectively arranged with one
The first resonant cavity, the second resonant cavity, third resonant cavity and the 4th resonant cavity of vibration device, first resonant cavity and described second
It is connected between resonant cavity by the second window, is connected between second resonant cavity and the third resonant cavity by the second window
It is logical, it is connected between the third resonant cavity and the 4th resonant cavity by the second window, second resonant cavity and described the
It is coupled between four resonant cavities by the sheet metal；
The receiving unit is the first receiving unit, and the public resonant cavity is the first public resonant cavity, and described first receives list
Member includes being respectively arranged with the 5th resonant cavity of a resonator, the 6th resonant cavity, the 7th resonant cavity, the 8th resonant cavity, the 9th humorous
Shake chamber and the tenth resonant cavity, is connected between the 5th resonant cavity and the 6th resonant cavity by the second window, and described the
It is connected between six resonant cavities and the 7th resonant cavity by second window, the 5th resonant cavity and the 7th resonance
It is connected between chamber by first window, is connected between the 7th resonant cavity and the 8th resonant cavity by second window
It is logical, it is connected between the 5th resonant cavity and the 8th resonant cavity by first window, the 8th resonant cavity and described the
It is connected between nine resonant cavities by second window, passes through described the between the 9th resonant cavity and the tenth resonant cavity
The connection of two windows；
First resonant cavity as transmitting unit first end and the 5th resonant cavity as the first receiving unit
One end passes through the second window and is connected to the described first public resonant cavity, and the first public resonant cavity and first port couple,
4th resonant cavity is coupled as the second end and second port of the transmitting unit, and the tenth resonant cavity connects as first
The second end and third port for receiving unit couple, to realize the signal input and output of the cavity body filter.
3. cavity body filter according to claim 2, which is characterized in that the cavity body filter further includes the second reception list
Second public resonant cavity of member and connection second receiving unit and the transmitting unit, second receiving unit include
It is respectively arranged with the 11st resonant cavity, the 12nd resonant cavity, the 13rd resonant cavity, the 14th resonant cavity, the tenth of a resonator
Five resonant cavities and the 16th resonant cavity, the 11st resonant cavity are connected by second window and the 12nd resonant cavity
Logical, the 12nd resonant cavity is connected to by second window with the 13rd resonant cavity, and the 13rd resonant cavity is logical
It crosses second window to be connected to the 14th resonant cavity, the 14th resonant cavity passes through second window and described the
The connection of 15 resonant cavities, the 13rd resonant cavity are connected to by the first window with the 15th resonant cavity, and described the
15 resonant cavities are connected to by second window with the 16th resonant cavity；
11st resonant cavity passes through second as the first end of second receiving unit and the described second public resonant cavity
Window connection, the second public resonant cavity and the second port couple, and the 16th resonant cavity connects as described second
The second end and the 4th port for receiving unit couple, to realize the signal input and output of the cavity body filter.
4. cavity body filter according to claim 1, which is characterized in that the transmitting unit is humorous including being respectively arranged with one
The first resonant cavity, the second resonant cavity, third resonant cavity and the 4th resonant cavity of vibration device, first resonant cavity and described second
It is connected between resonant cavity by the second window, is connected between second resonant cavity and the third resonant cavity by the second window
It is logical, it is connected between the third resonant cavity and the 4th resonant cavity by the second window, second resonant cavity and described the
It is coupled between four resonant cavities by the sheet metal；
The receiving unit is the second receiving unit, and the public resonant cavity is the second public resonant cavity, and described second receives list
Member includes the 11st resonant cavity, the 12nd resonant cavity, the 13rd resonant cavity, the 14th resonance for being respectively arranged with a resonator
Chamber, the 15th resonant cavity and the 16th resonant cavity, the 11st resonant cavity pass through second window and the described 12nd
Resonant cavity connection, the 12nd resonant cavity are connected to by second window with the 13rd resonant cavity, and the described 13rd
Resonant cavity is connected to by second window with the 14th resonant cavity, and the 14th resonant cavity passes through second window
It is connected to the 15th resonant cavity, the 13rd resonant cavity is connected to by first window with the 15th resonant cavity, institute
The 15th resonant cavity is stated to be connected to by second window with the 16th resonant cavity；
4th resonant cavity is as the first end of transmitting unit and the 11st resonant cavity as the second receiving unit
First end is connected to by the second window with the described second public resonant cavity, and the second public resonant cavity and first port couple,
First resonant cavity is coupled as the second end and second port of the transmitting unit, described in the 16th resonant cavity conduct
The second end and third port of second receiving unit couple, to realize the signal input and output of the cavity body filter.
5. cavity body filter according to claim 3, which is characterized in that the cavity body filter further include: cover board；
Wherein, first to fourth described resonant cavity is the first metal resonators；It is described humorous in 5th to the 16th resonant cavity
Vibration device is the second metal resonators；The resonator in the first public resonant cavity and the second public resonant cavity is
Third metal resonators；
The outer diameter of first metal resonators and third metal resonators is 21mm, and internal diameter 8.4 is highly 19mm, described
The outer diameter of second metal resonators is 25mm, internal diameter 10mm, is highly 20mm.
6. cavity body filter according to claim 5, which is characterized in that first metal resonators, second gold medal
Belong to resonator and the third metal resonators are band-pass resonator；
The free transmission range of first metal resonators and third metal resonators is 935MHz~960MHz；Second metal
The free transmission range of resonator is 890MHz~915MHz.
7. cavity body filter according to claim 5, which is characterized in that first metal resonators and second gold medal
The inside for belonging to resonator and third metal resonators is provided with metal frequency modulation screw rod, and one end of the metal frequency modulation screw rod is logical
It crosses screw thread to connect with the screw hole of the cover board, the other end extends in the metal resonators, by adjusting the metal frequency modulation
The depth that screw rod extends in the metal resonators is to adjust the resonance frequencies of the metal resonators.
8. cavity body filter according to claim 5, which is characterized in that the cavity body filter further includes being arranged described
One end of coupling screw rod at first window and the second window, the coupling screw rod is connected by the screw hole of screw thread and the cover board
It connects, the other end extends in the first window and the second window.
9. cavity body filter according to claim 8, which is characterized in that the cavity body filter further includes being arranged described
Coupling muscle at first window and the second window, the coupling muscle connect two adjacent resonators, and one end of the coupling screw rod is logical
It crosses screw thread to connect with the screw hole of the cover board, the other end extends in the coupling muscle.
10. a kind of communication radio frequency device, which is characterized in that the communication radio frequency device includes such as any one of claim 1~9 institute
The cavity body filter stated, the cavity body filter are set to the transceiver circuit part of the communication radio frequency device, for letter
It number is selected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822090513.2U CN209691919U (en) | 2018-12-12 | 2018-12-12 | Cavity body filter and communication radio frequency device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822090513.2U CN209691919U (en) | 2018-12-12 | 2018-12-12 | Cavity body filter and communication radio frequency device |
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| Publication Number | Publication Date |
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| CN209691919U true CN209691919U (en) | 2019-11-26 |
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ID=68596014
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822090513.2U Active CN209691919U (en) | 2018-12-12 | 2018-12-12 | Cavity body filter and communication radio frequency device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036338A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication device and filter |
| CN113036354A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| CN113054353A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| CN113054384A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| CN113054345A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN113629370A (en) * | 2020-05-09 | 2021-11-09 | 大富科技(安徽)股份有限公司 | Communication device and filter thereof |
| CN113839161A (en) * | 2020-06-23 | 2021-12-24 | 大富科技(安徽)股份有限公司 | Filter and communication equipment |
-
2018
- 2018-12-12 CN CN201822090513.2U patent/CN209691919U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036338A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication device and filter |
| CN113036354A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| CN113054353A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| CN113054384A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| CN113054345A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN113629370A (en) * | 2020-05-09 | 2021-11-09 | 大富科技(安徽)股份有限公司 | Communication device and filter thereof |
| CN113839161A (en) * | 2020-06-23 | 2021-12-24 | 大富科技(安徽)股份有限公司 | Filter and communication equipment |
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Address after: 233000 building 4, national financial incubation Industrial Park, 17 Yannan Road, high tech Zone, Bengbu City, Anhui Province Patentee after: Dafu Technology (Anhui) Co., Ltd Address before: 518104, Guangdong, Shenzhen province Baoan District manhole street, oyster Road, manhole Industrial Company Third Industrial Zone, A1, A2, A3 101, A4 first, second, third layers Patentee before: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. |