CN205595430U - Triplexer - Google Patents

Triplexer Download PDF

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Publication number
CN205595430U
CN205595430U CN201620418774.0U CN201620418774U CN205595430U CN 205595430 U CN205595430 U CN 205595430U CN 201620418774 U CN201620418774 U CN 201620418774U CN 205595430 U CN205595430 U CN 205595430U
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electric capacity
inductance
foot
ground wire
feet
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CN201620418774.0U
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Chinese (zh)
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桑明华
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NANJING WEIXIANG TECHNOLOGY Co Ltd
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NANJING WEIXIANG TECHNOLOGY Co Ltd
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Abstract

The utility model discloses a triplexer belongs to wave filter technical field, including signal input part mouth J1, the first signal output port J2, the 2nd signal output part mouth J3, the 3rd signal output part mouth J4, a LC passive filter unit, the 2nd LC passive filter unit and spiral cavity filter unit, a LC passive filter unit, signal input part mouth J1 is all connected to the input of the 2nd LC passive filter unit and spiral cavity filter unit, 2 LC passive filter and 1 spiral cavity filter's combined method has been adopted, become incoming signal filtering the signal of the high isolation that the three routes is different, the utility model discloses have different resonance circuit, resonant frequency's scope and Q value difference are bie very big.

Description

A kind of triplexer
Technical field
This utility model belongs to wave filter technology field.
Background technology
In modern communications, the application of triplexer and multiplexer is more and more extensive.Traditional triplexer design plan Slightly, the wave filter of each passage the most individually designed, compensate respectively finally by the electrical length optimizing joint Influencing each other of individual path, does not accounts for the impact of wave filter, directly connects what wave filter obtained by joint Serious interference between triplexer response channel.Owing to whole triplexer model is carried out all-wave optimization, so The result that the most time-consumingly and usually can not get.In the case of passband between channels is spaced closely together, each Path influences each other the most serious.Tradition triplexer design does not accounts for the interactional defect of wave filter.
Utility model content
The purpose of this utility model is to provide a kind of triplexer, have employed 2 LC passive filters and 1 spiral shell The combined method of rotation cavity body filter, is filtered into the signal of the different high degree of isolation in three tunnels by input signal, this Utility model has different resonant tanks, and scope and the Q-value difference of resonant frequency are the biggest;This utility model The wave filter using different structure is suitable for different operating frequencies and band, and cavity body filter is by resonator cavity, tune Humorous screws etc. form, and cavity equivalence becomes inductance in parallel electric capacity form a resonance level and reaches filter function, knot Structure is firm, and stable and reliable for performance, volume is little, high q-factor, high side parasitic passband farther out and also perfect heat-dissipating, Can be used for relatively high power and frequency;LC wave filter is used to realize high monolateral near frequency suppression.
For achieving the above object, this utility model by the following technical solutions: a kind of triplexer, including signal Input port J1, the first signal output port J2, secondary signal output port J3, the 3rd signal output port J4, a LC passive filter unit, the 2nd LC passive filter unit and spiral cavity filter cell, Oneth LC passive filter unit, the 2nd LC passive filter unit and spiral cavity filter cell defeated Entering end and be all connected with signal input port J1, the outfan of spiral cavity filter cell connects the first signal output Port J2, the outfan of a LC passive filter unit connects secondary signal output port J3, the 2nd LC The outfan of passive filter unit connects the 3rd signal output port J4;
Spiral cavity filter cell includes spiral cavity wave filter IC1, electric capacity C1, electric capacity C2 and inductance L2, The outfan of spiral cavity wave filter IC1 is the outfan of described spiral cavity filter cell, spiral cavity The input of wave filter IC1 connects 2 feet of electric capacity C2 by electric capacity C1, and 2 feet of electric capacity C2 are also by electricity Sense L2 connects ground wire, and 1 foot of electric capacity C2 is the input of described spiral cavity filter cell;
Oneth LC passive filter unit includes electric capacity C3, inductance L1, inductance L8, electric capacity C14, electric capacity C11, electric capacity C12, electric capacity C15, electric capacity C16, electric capacity C13, electric capacity C30, electric capacity C31, electric capacity C29, Electric capacity C28, electric capacity C27, electric capacity C7, electric capacity C8, electric capacity C6, electric capacity C10, electric capacity C9, electric capacity C5, Electric capacity C14, inductance L9, inductance L10, inductance L7, inductance L14, inductance L15, inductance L3, inductance L4, inductance L6 and inductance L5,1 foot of electric capacity C3 is the input of a described LC passive filter unit, 2 feet of electric capacity C3 connect 1 foot of electric capacity C12 by inductance L1, and 2 feet of electric capacity C12 connect electric capacity C13 1 foot, 1 foot of electric capacity C12 by electric capacity C11 connect ground wire, 1 foot of electric capacity C12 is also by series connection The electric capacity C14 connected and electric capacity C16 connects ground wire, and inductance L8 is connected in parallel with electric capacity C14, electric capacity C12 2 feet connect ground wire by the electric capacity C15 that is connected in series and electric capacity C16;
Inductance L7 is connected in parallel with electric capacity C13, and 1 foot of electric capacity C13 connects ground wire, electricity by inductance L9 2 feet holding C13 connect ground wire by inductance L10, and 2 feet of electric capacity C13 connect electric capacity by electric capacity C31 1 foot of C29,2 feet of electric capacity C29 connect 1 foot of electric capacity C7, the 1 of electric capacity C29 by electric capacity C27 Foot connects ground wire by electric capacity C30 and inductance L15 respectively, and 2 feet of electric capacity C29 are respectively by electric capacity C28 Ground wire is connected with inductance L14;
1 foot of electric capacity C7 connects ground wire by inductance L4, and 2 feet of electric capacity C7 connect ground by inductance L3 Line, inductance L6 is connected in parallel with electric capacity C7, and 2 feet of electric capacity C7 are also connected with 1 foot of electric capacity C6;
1 foot of electric capacity C6 connects ground wire, the 2 of electric capacity C6 by the electric capacity C8 being connected in series and electric capacity C10 Foot connects ground wire by the electric capacity C9 being connected in series and electric capacity C10, and inductance L5 is connected in parallel with electric capacity C9, 2 feet of electric capacity C6 connect ground wire also by electric capacity C5, and 2 feet of electric capacity C6 are a described passive filter of LC The outfan of ripple device unit;
2nd LC passive filter unit includes electric capacity C4, electric capacity C22, electric capacity C19, electric capacity C21, electricity Hold C26, electric capacity C20, electric capacity C23, electric capacity C17, inductance L13, electric capacity C24, electric capacity C18, electric capacity C33, inductance L12, inductance L17, electric capacity C34, electric capacity C37, electric capacity C38, electric capacity C32, inductance L18, Electric capacity C35, electric capacity C40, electric capacity C36, electric capacity C39, electric capacity C41 and inductance L16, the 1 of electric capacity C22 Foot is the input of described 2nd LC passive filter unit, and 2 feet of electric capacity C22 are connected by electric capacity C26 Ground wire, 1 foot of electric capacity C22 connects ground wire by electric capacity C4, and 1 foot of electric capacity C22 is also by being connected in series Electric capacity C19 and electric capacity C20 connect ground wire, inductance L11 is connected in parallel with electric capacity C19, the 2 of electric capacity C22 Foot connects ground wire also by the electric capacity C21 being connected in series and electric capacity C20, and 2 feet of electric capacity C22 are also connected with electricity Holding 1 foot of C23,2 feet of electric capacity C23 connect ground wire by electric capacity C17, and 2 feet of electric capacity C23 are the most logical Crossing 1 foot that electric capacity C24 connects electric capacity C25, inductance L13 is connected in parallel with electric capacity C23, the 1 of electric capacity C25 Foot connects ground wire by electric capacity C18 and inductance L12 the most respectively, and 2 feet of electric capacity C25 are respectively by electric capacity C33 Connecting ground wire with inductance L17,2 feet of electric capacity C25 connect 1 foot of electric capacity C38 also by electric capacity C37, 1 foot of electric capacity C38 connects ground wire also by electric capacity C34, and inductance L18 is connected in parallel with electric capacity C38, electricity 2 feet holding C38 connect 1 foot of electric capacity C39, and 1 foot of electric capacity C39 is by the electric capacity C35 being cascaded Connecting ground wire with electric capacity C32,1 foot of electric capacity C39 connects ground wire, the 2 of electric capacity C39 also by electric capacity C40 Foot connects ground wire by the electric capacity C36 being connected in series and electric capacity C32, and inductance L16 is in parallel with electric capacity C36 even Connecing, 2 feet of electric capacity C39 connect ground wire also by electric capacity C41, and 2 feet of electric capacity C39 are described 2nd LC The outfan of passive filter unit.
Described spiral cavity filter cell is applicable to the signal of 370-380MHz, a LC passive filter Unit is applicable to the signal of 390-400MHz, and the 2nd LC passive filter unit is applicable to 300-354MHz's Signal.
A kind of triplexer described in the utility model, have employed 2 LC passive filters and 1 spiral cavity The combined method of wave filter, different resonant tanks, scope and the Q-value difference of resonant frequency are the biggest.Use The wave filter of different structure is suitable for different operating frequencies and band.Cavity body filter is by resonator cavity, tuning spiral shell The compositions such as nail, become cavity equivalence inductance in parallel electric capacity to form a resonance level and reach filter function, structure jail Gu, stable and reliable for performance, volume is little, high q-factor, high side parasitic passband farther out and also perfect heat-dissipating, can For relatively high power and frequency;LC wave filter is used to realize high monolateral near frequency suppression;This utility model is adopted By LC passive filter and the mode of spiral cavity filter combination, it is achieved that the small size of triplexer;LC without Source filter monolateral nearly frequency suppression height;Realize high-isolation :≤-80dB.
This utility model, according to the index of each path filter, obtains the proper polynomial of wave filter response. Derive the polynomial computing formula of triplexer response characteristic, and be calculated its proper polynomial.These are many Xiang Shizhong contains the information that influences each other of each path filter.The reflection root of polynomial of triplexer is entered Row rearrangement, can make triplexer the moire behavior such as all present three frequency ranges.Utilize these roots, can To calculate final filter characteristic multinomial easily.Finally, these filter polynomial are applied Classical integrated approach, draws the high q-factor of each wave filter, high squareness factor.
Accompanying drawing explanation
Fig. 1 is hardware elementary diagram of the present utility model;
Fig. 2 is isolation curve chart of the present utility model;
Fig. 3 is loss standing wave curve chart of the present utility model.
Detailed description of the invention
A kind of triplexer as shown in Figure 1, including signal input port J1, the first signal output port J2, the Binary signal output port J3, the 3rd signal output port J4, a LC passive filter unit, the 2nd LC Passive filter unit and spiral cavity filter cell, a LC passive filter unit, the 2nd LC without The input of source filter unit and spiral cavity filter cell is all connected with signal input port J1, helical cavity The outfan of fluid filter unit connects the first signal output port J2, a LC passive filter unit defeated Going out end and connect secondary signal output port J3, the outfan of the 2nd LC passive filter unit connects the 3rd signal Output port J4;
Spiral cavity filter cell includes spiral cavity wave filter IC1, electric capacity C1, electric capacity C2 and inductance L2, The outfan of spiral cavity wave filter IC1 is the outfan of described spiral cavity filter cell, spiral cavity The input of wave filter IC1 connects 2 feet of electric capacity C2 by electric capacity C1, and 2 feet of electric capacity C2 are also by electricity Sense L2 connects ground wire, and 1 foot of electric capacity C2 is the input of described spiral cavity filter cell;
Oneth LC passive filter unit includes electric capacity C3, inductance L1, inductance L8, electric capacity C14, electric capacity C11, electric capacity C12, electric capacity C15, electric capacity C16, electric capacity C13, electric capacity C30, electric capacity C31, electric capacity C29, Electric capacity C28, electric capacity C27, electric capacity C7, electric capacity C8, electric capacity C6, electric capacity C10, electric capacity C9, electric capacity C5, Electric capacity C14, inductance L9, inductance L10, inductance L7, inductance L14, inductance L15, inductance L3, inductance L4, inductance L6 and inductance L5,1 foot of electric capacity C3 is the input of a described LC passive filter unit, 2 feet of electric capacity C3 connect 1 foot of electric capacity C12 by inductance L1, and 2 feet of electric capacity C12 connect electric capacity C13 1 foot, 1 foot of electric capacity C12 by electric capacity C11 connect ground wire, 1 foot of electric capacity C12 is also by series connection The electric capacity C14 connected and electric capacity C16 connects ground wire, and inductance L8 is connected in parallel with electric capacity C14, electric capacity C12 2 feet connect ground wire by the electric capacity C15 that is connected in series and electric capacity C16;
Inductance L7 is connected in parallel with electric capacity C13, and 1 foot of electric capacity C13 connects ground wire, electricity by inductance L9 2 feet holding C13 connect ground wire by inductance L10, and 2 feet of electric capacity C13 connect electric capacity by electric capacity C31 1 foot of C29,2 feet of electric capacity C29 connect 1 foot of electric capacity C7, the 1 of electric capacity C29 by electric capacity C27 Foot connects ground wire by electric capacity C30 and inductance L15 respectively, and 2 feet of electric capacity C29 are respectively by electric capacity C28 Ground wire is connected with inductance L14;
1 foot of electric capacity C7 connects ground wire by inductance L4, and 2 feet of electric capacity C7 connect ground by inductance L3 Line, inductance L6 is connected in parallel with electric capacity C7, and 2 feet of electric capacity C7 are also connected with 1 foot of electric capacity C6;
1 foot of electric capacity C6 connects ground wire, the 2 of electric capacity C6 by the electric capacity C8 being connected in series and electric capacity C10 Foot connects ground wire by the electric capacity C9 being connected in series and electric capacity C10, and inductance L5 is connected in parallel with electric capacity C9, 2 feet of electric capacity C6 connect ground wire also by electric capacity C5, and 2 feet of electric capacity C6 are a described passive filter of LC The outfan of ripple device unit;
2nd LC passive filter unit includes electric capacity C4, electric capacity C22, electric capacity C19, electric capacity C21, electricity Hold C26, electric capacity C20, electric capacity C23, electric capacity C17, inductance L13, electric capacity C24, electric capacity C18, electric capacity C33, inductance L12, inductance L17, electric capacity C34, electric capacity C37, electric capacity C38, electric capacity C32, inductance L18, Electric capacity C35, electric capacity C40, electric capacity C36, electric capacity C39, electric capacity C41 and inductance L16, the 1 of electric capacity C22 Foot is the input of described 2nd LC passive filter unit, and 2 feet of electric capacity C22 are connected by electric capacity C26 Ground wire, 1 foot of electric capacity C22 connects ground wire by electric capacity C4, and 1 foot of electric capacity C22 is also by being connected in series Electric capacity C19 and electric capacity C20 connect ground wire, inductance L11 is connected in parallel with electric capacity C19, the 2 of electric capacity C22 Foot connects ground wire also by the electric capacity C21 being connected in series and electric capacity C20, and 2 feet of electric capacity C22 are also connected with electricity Holding 1 foot of C23,2 feet of electric capacity C23 connect ground wire by electric capacity C17, and 2 feet of electric capacity C23 are the most logical Crossing 1 foot that electric capacity C24 connects electric capacity C25, inductance L13 is connected in parallel with electric capacity C23, the 1 of electric capacity C25 Foot connects ground wire by electric capacity C18 and inductance L12 the most respectively, and 2 feet of electric capacity C25 are respectively by electric capacity C33 Connecting ground wire with inductance L17,2 feet of electric capacity C25 connect 1 foot of electric capacity C38 also by electric capacity C37, 1 foot of electric capacity C38 connects ground wire also by electric capacity C34, and inductance L18 is connected in parallel with electric capacity C38, electricity 2 feet holding C38 connect 1 foot of electric capacity C39, and 1 foot of electric capacity C39 is by the electric capacity C35 being cascaded Connecting ground wire with electric capacity C32,1 foot of electric capacity C39 connects ground wire, the 2 of electric capacity C39 also by electric capacity C40 Foot connects ground wire by the electric capacity C36 being connected in series and electric capacity C32, and inductance L16 is in parallel with electric capacity C36 even Connecing, 2 feet of electric capacity C39 connect ground wire also by electric capacity C41, and 2 feet of electric capacity C39 are described 2nd LC The outfan of passive filter unit.
Described spiral cavity filter cell is applicable to the signal of 370-380MHz, a LC passive filter Unit is suitable for the signal of 390-400MHz, and the 2nd LC passive filter unit is applicable to the letter of 300-354MHz Number.
During work, signal source inputs from signal input port J1, a LC passive filter unit, second Signal source is filtered by LC passive filter unit and spiral cavity filter cell respectively, and such as Fig. 2 and Tu Shown in 3, spiral cavity filter cell is responsible for filtering and the signal of output 370-380MHz, and a LC is passive Filter cell is responsible for filtering and the signal of output 390-400MHz, and the 2nd LC passive filter unit is responsible for Filtering and the signal of output 300-354MHz.
A kind of triplexer described in the utility model, have employed 2 LC passive filters and 1 spiral cavity The combined method of wave filter, different resonant tanks, scope and the Q-value difference of resonant frequency are the biggest.Use The wave filter of different structure is suitable for different operating frequencies and band.Cavity body filter is by resonator cavity, tuning spiral shell The compositions such as nail, become cavity equivalence inductance in parallel electric capacity to form a resonance level and reach filter function, structure jail Gu, stable and reliable for performance, volume is little, high q-factor, high side parasitic passband farther out and also perfect heat-dissipating, can For relatively high power and frequency;LC wave filter is used to realize high monolateral near frequency suppression;This utility model is adopted By LC passive filter and the mode of spiral cavity filter combination, it is achieved that the small size of triplexer;LC without Source filter monolateral nearly frequency suppression height;Realize high-isolation :≤-80dB.

Claims (2)

1. a triplexer, it is characterised in that: include signal input port J1, the first signal output port J2, Secondary signal output port J3, the 3rd signal output port J4, a LC passive filter unit, second LC passive filter unit and spiral cavity filter cell, a LC passive filter unit, the 2nd LC The input of passive filter unit and spiral cavity filter cell is all connected with signal input port J1, spiral The outfan of cavity body filter unit connects the first signal output port J2, a LC passive filter unit Outfan connects secondary signal output port J3, and the outfan of the 2nd LC passive filter unit connects the 3rd letter Number output port J4;
Spiral cavity filter cell includes spiral cavity wave filter IC1, electric capacity C1, electric capacity C2 and inductance L2, The outfan of spiral cavity wave filter IC1 is the outfan of described spiral cavity filter cell, spiral cavity The input of wave filter IC1 connects 2 feet of electric capacity C2 by electric capacity C1, and 2 feet of electric capacity C2 are also by electricity Sense L2 connects ground wire, and 1 foot of electric capacity C2 is the input of described spiral cavity filter cell;
Oneth LC passive filter unit includes electric capacity C3, inductance L1, inductance L8, electric capacity C14, electric capacity C11, electric capacity C12, electric capacity C15, electric capacity C16, electric capacity C13, electric capacity C30, electric capacity C31, electric capacity C29, Electric capacity C28, electric capacity C27, electric capacity C7, electric capacity C8, electric capacity C6, electric capacity C10, electric capacity C9, electric capacity C5, Electric capacity C14, inductance L9, inductance L10, inductance L7, inductance L14, inductance L15, inductance L3, inductance L4, inductance L6 and inductance L5,1 foot of electric capacity C3 is the input of a described LC passive filter unit, 2 feet of electric capacity C3 connect 1 foot of electric capacity C12 by inductance L1, and 2 feet of electric capacity C12 connect electric capacity C13 1 foot, 1 foot of electric capacity C12 by electric capacity C11 connect ground wire, 1 foot of electric capacity C12 is also by series connection The electric capacity C14 connected and electric capacity C16 connects ground wire, and inductance L8 is connected in parallel with electric capacity C14, electric capacity C12 2 feet connect ground wire by the electric capacity C15 that is connected in series and electric capacity C16;
Inductance L7 is connected in parallel with electric capacity C13, and 1 foot of electric capacity C13 connects ground wire, electricity by inductance L9 2 feet holding C13 connect ground wire by inductance L10, and 2 feet of electric capacity C13 connect electric capacity by electric capacity C31 1 foot of C29,2 feet of electric capacity C29 connect 1 foot of electric capacity C7, the 1 of electric capacity C29 by electric capacity C27 Foot connects ground wire by electric capacity C30 and inductance L15 respectively, and 2 feet of electric capacity C29 are respectively by electric capacity C28 Ground wire is connected with inductance L14;
1 foot of electric capacity C7 connects ground wire by inductance L4, and 2 feet of electric capacity C7 connect ground by inductance L3 Line, inductance L6 is connected in parallel with electric capacity C7, and 2 feet of electric capacity C7 are also connected with 1 foot of electric capacity C6;
1 foot of electric capacity C6 connects ground wire, the 2 of electric capacity C6 by the electric capacity C8 being connected in series and electric capacity C10 Foot connects ground wire by the electric capacity C9 being connected in series and electric capacity C10, and inductance L5 is connected in parallel with electric capacity C9, 2 feet of electric capacity C6 connect ground wire also by electric capacity C5, and 2 feet of electric capacity C6 are a described passive filter of LC The outfan of ripple device unit;
2nd LC passive filter unit includes electric capacity C4, electric capacity C22, electric capacity C19, electric capacity C21, electricity Hold C26, electric capacity C20, electric capacity C23, electric capacity C17, inductance L13, electric capacity C24, electric capacity C18, electric capacity C33, inductance L12, inductance L17, electric capacity C34, electric capacity C37, electric capacity C38, electric capacity C32, inductance L18, Electric capacity C35, electric capacity C40, electric capacity C36, electric capacity C39, electric capacity C41 and inductance L16, the 1 of electric capacity C22 Foot is the input of described 2nd LC passive filter unit, and 2 feet of electric capacity C22 are connected by electric capacity C26 Ground wire, 1 foot of electric capacity C22 connects ground wire by electric capacity C4, and 1 foot of electric capacity C22 is also by being connected in series Electric capacity C19 and electric capacity C20 connect ground wire, inductance L11 is connected in parallel with electric capacity C19, the 2 of electric capacity C22 Foot connects ground wire also by the electric capacity C21 being connected in series and electric capacity C20, and 2 feet of electric capacity C22 are also connected with electricity Holding 1 foot of C23,2 feet of electric capacity C23 connect ground wire by electric capacity C17, and 2 feet of electric capacity C23 are the most logical Crossing 1 foot that electric capacity C24 connects electric capacity C25, inductance L13 is connected in parallel with electric capacity C23, the 1 of electric capacity C25 Foot connects ground wire by electric capacity C18 and inductance L12 the most respectively, and 2 feet of electric capacity C25 are respectively by electric capacity C33 Connecting ground wire with inductance L17,2 feet of electric capacity C25 connect 1 foot of electric capacity C38 also by electric capacity C37, 1 foot of electric capacity C38 connects ground wire also by electric capacity C34, and inductance L18 is connected in parallel with electric capacity C38, electricity 2 feet holding C38 connect 1 foot of electric capacity C39, and 1 foot of electric capacity C39 is by the electric capacity C35 being cascaded Connecting ground wire with electric capacity C32,1 foot of electric capacity C39 connects ground wire, the 2 of electric capacity C39 also by electric capacity C40 Foot connects ground wire by the electric capacity C36 being connected in series and electric capacity C32, and inductance L16 is in parallel with electric capacity C36 even Connecing, 2 feet of electric capacity C39 connect ground wire also by electric capacity C41, and 2 feet of electric capacity C39 are described 2nd LC The outfan of passive filter unit.
2. a kind of triplexer as claimed in claim 1, it is characterised in that: described spiral cavity wave filter list Unit is applicable to the signal of 370-380MHz, and a LC passive filter unit is applicable to the letter of 390-400MHz Number, the 2nd LC passive filter unit is applicable to the signal of 300-354MHz.
CN201620418774.0U 2016-05-10 2016-05-10 Triplexer Withdrawn - After Issue CN205595430U (en)

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Application Number Priority Date Filing Date Title
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CN201620418774.0U CN205595430U (en) 2016-05-10 2016-05-10 Triplexer

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CN201620418774.0U Withdrawn - After Issue CN205595430U (en) 2016-05-10 2016-05-10 Triplexer

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107359389A (en) * 2016-05-10 2017-11-17 南京威翔科技有限公司 A kind of triplexer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107359389A (en) * 2016-05-10 2017-11-17 南京威翔科技有限公司 A kind of triplexer
CN107359389B (en) * 2016-05-10 2020-01-10 南京威翔科技有限公司 Triplexer

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