High-performance VHF (very high frequency)-band band-pass filter

The invention discloses a high-performance VHF (very high frequency)-band band-pass filter. The prototype of a deformed Chebyshew band-pass filter with controllable transmission zeros is adopted, equivalent lumped components are realized through an LTCC (low-temperature co-fired ceramic) multilayer...

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Bibliographische Detailangaben
Hauptverfasser: BIAN JIEPING, DAI YONGSHENG, ZHANG XIAOMING, CONG ZHENGHUA, ZHOU WEI, CHEN XIANGZHI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The invention discloses a high-performance VHF (very high frequency)-band band-pass filter. The prototype of a deformed Chebyshew band-pass filter with controllable transmission zeros is adopted, equivalent lumped components are realized through an LTCC (low-temperature co-fired ceramic) multilayer structure, the band-pass filter can be greatly downsized under the condition of same technical indicators; meanwhile, two four-stage filter bodies of the band-pass filter are cascaded, restraint effect outside the band can be effectively increased, and requirements of insertion loss of the band-pass filter on a passing band and a stop band are well met. In addition, the high-performance VHF-band band-pass filter is low in cost, favorable for mass production, good in frequency-selection characteristic and temperature performance and the like, thereby being widely applicable to a radio-frequency wireless communication system.