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UHF waveband miniature duplexer

A duplexer and miniature technology, which is applied in the direction of waveguide devices, electrical components, multi-terminal pair networks, etc., to achieve excellent electrical performance, simple circuit structure, and light weight

Inactive Publication Date: 2015-10-07
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But still do not have a kind of UHF band miniature duplexer in the prior art

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  • UHF waveband miniature duplexer
  • UHF waveband miniature duplexer
  • UHF waveband miniature duplexer

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Embodiment Construction

[0012] In conjunction with Fig. 1 (a), Fig. 1 (b), Fig. 1 (c), a kind of UHF band miniature duplexer of the present invention includes LC isolation circuit and two microwave filters, wherein the first microwave filter F1 includes The first input port P1, the first input inductor Lin1, the first resonator L1-C1, the second resonator L2-C2, the third resonator L3-C3, the fourth resonator L4-C4, the first output inductor Lout1, The first Z-shaped interstage coupling stripline Z1, the surface-mounted 50-ohm impedance first output port P2 and the ground terminal, wherein the first resonator L1-C1 is formed by the parallel connection of the first coil L1 and the first capacitor C1 , one end of the first coil L1 is connected to one end of the first capacitor C1, the other end of the first coil L1 and the other end of the first capacitor C1 are respectively grounded; the second resonator L2-C2 is composed of the second coil L2 and the second capacitor C2 is connected in parallel, one ...

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Abstract

The invention relates to a UHF waveband miniature duplexer comprising a three-port isolation circuit and two microwave filters of different frequency bands. Microwave filters comprise output ports with surface mounting of 50ohm impedance, parallel resonant units which are realized by integrated inductors and capacitors via parallel connection, and resonant units which are formed by comb lines. The aforementioned structure is realized by adopting a multilayer low-temperature co-fired ceramic process technology. The UHF waveband miniature duplexer has advantages of being each to debug, low in weight, small in size, high in reliability, great in electrical property, great in temperature stability, great in electrical property batch consistency and low in cost so that the UHF waveband miniature duplexer can be mass produced and is suitable for occasions and corresponding systems with strict requirements for the size, electrical property, temperature stability and reliability, such as communication of the corresponding microwave frequency bands and satellite communication.

Description

technical field [0001] The invention relates to a duplexer, in particular to a UHF band micro duplexer. Background technique [0002] In recent years, with the rapid development of miniaturization of mobile communication, satellite communication and national defense electronic systems, high performance, low cost and miniaturization have become the development direction of the microwave / radio frequency field. The performance, size and reliability of the duplexer Both sex and cost have put forward higher requirements. The main indicators describing the performance of this component are: operating frequency, isolation, insertion loss, stability, etc. A duplexer can be realized by isolating filters of different frequencies by LC. [0003] Low-temperature co-fired ceramics is an electronic packaging technology. Using multilayer ceramic technology, passive components can be built inside the dielectric substrate, and active components can also be mounted on the surface of the sub...

Claims

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Application Information

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IPC IPC(8): H03H7/01H01P1/203
Inventor 乔冬春张超戴永胜陈烨李博文潘航刘毅
Owner NANJING UNIV OF SCI & TECH
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