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VHF (very high frequency) &UHF (ultra high frequency) band type miniature microwave filter bank

A microwave filter, miniature technology, applied in the direction of electrical components, multi-terminal pair network, impedance network, etc., to achieve the effect of small size, mass production, and simple structure of the circuit

Inactive Publication Date: 2015-09-30
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But still do not have a kind of VHF&UHF band miniature microwave filter bank in the prior art

Method used

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  • VHF (very high frequency) &UHF (ultra high frequency) band type miniature microwave filter bank
  • VHF (very high frequency) &UHF (ultra high frequency) band type miniature microwave filter bank
  • VHF (very high frequency) &UHF (ultra high frequency) band type miniature microwave filter bank

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Embodiment Construction

[0020]With reference to Fig. 1(a), Fig. 1(b), Fig. 1(c), Fig. 1(d), a VHF&UHF band miniature microwave filter bank of the present invention. The first microwave filter F1 includes a surface-mounted 50-ohm impedance first input port P1, a first input inductance Lin1, a first resonator L1-C1, a second resonator L2-C2, a third resonator L3-C3, The fourth resonator L4-C4, the first output inductor Lout1, the first Z-shaped inter-stage 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 connecting the first coil L1 and the first capacitor C1 in parallel, one end of the first coil L1 is connected to one end of the first capacitor C1, and the other end of the first coil L1 is connected to the first capacitor C1 The other ends of the two are respectively grounded; the second resonator L2-C2 is formed by parallel connection of the second coil L2 and the second capacitor C2, one end of ...

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Abstract

The invention relates to a VHF (very high frequency) &UHF (ultra high frequency) band type miniature microwave filter bank. The miniature microwave filter bank comprises a single-pole tripe-throw switch chip MS-SMA-033 and three microwave filters with different frequency bands, wherein each microwave filter comprises input / output ports with surface mounted 50 ohmage impedance and parallel resonance units formed through parallel connection of lumped inductance capacitors. The structures all adopt a multi-layer LTCC (low temperature co-fired ceramic) technology. The miniature microwave filter bank has the advantages of easiness in debugging, light weight, small size, high reliability, good electrical property, good temperature stability, good batch consistency of electrical property, low cost, capability of realizing mass production and the like, and is applicable to occasions and corresponding systems, with strict requirements for size, electrical property, temperature stability and reliability, for communications in corresponding microwave frequency bands, satellite communications and the like.

Description

technical field [0001] The invention relates to a filter bank, in particular to a VHF&UHF band miniature microwave filter bank. 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 microwave filters Both sex and cost have put forward higher requirements. The main indicators describing the performance of this component are: passband operating frequency range, stopband frequency range, passband insertion loss, stopband attenuation, passband input / output voltage standing wave ratio, insertion phase shift and delay frequency characteristics, temperature Stability, size, weight, reliability, etc. Filters with different frequencies are connected through switches to form a filter bank, whi...

Claims

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Application Information

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IPC IPC(8): H03H7/01
Inventor 乔冬春张超戴永胜刘毅李博文陈烨潘航
Owner NANJING UNIV OF SCI & TECH
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