Tunable lumped-distributed capacitively-coupled transmission-line filter

Tunable lumped-distributed capacitively-coupled transmission-line filter

A wide tuning range filter is proposed, based on lumped-distributed capacitively-coupled transmission lines. The proposed structure maintains a constant inter-resonator coupling factor over a wide centre-frequency tuning range leading to a constant fractional bandwidth design. A bandpass filter with...

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Veröffentlicht in:Electronics letters 2004-04, Vol.40 (7), p.1-1
Hauptverfasser: Carey-Smith, B, Warr, P A, Beach, M A, Nesimoglu, T
Format: Artikel
Sprache:eng
Schlagworte:
Bandpass filters
Bandwidth
Constants
Design factors
Joining
Transmission lines
Tuning
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Zusammenfassung:A wide tuning range filter is proposed, based on lumped-distributed capacitively-coupled transmission lines. The proposed structure maintains a constant inter-resonator coupling factor over a wide centre-frequency tuning range leading to a constant fractional bandwidth design. A bandpass filter with a two-octave tuning range has been designed, fabricated and measured.
ISSN:0013-5194
1350-911X