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- Title
Reconfigurable-bandwidth bandpass filter within 10-50%.
- Authors
Sánchez-Soriano, Miguel Á.; Gómez-García, Roberto; Torregrosa-Penalva, Germán; Bronchalo, Enrique
- Abstract
An original and simple approach to design electronically reconfigurable-bandwidth microwave planar bandpass filters is reported. It exploits the use of transversal signal-interference filtering sections shaped by a branch-line directional coupler arranged in reflection mode with switchable stubs. Thus, by switching on/off these stubs through p-i-n diodes, sharprejection filtering functions with different bandwidths and multiple out-of-band transmission zeros are produced. Analytical equations and guidelines for the synthesis of the basic switchable filter building block are detailed. Moreover, a 2 GHz twostage proof-of-concept microstrip prototype, with five distinct bandwidth states ranging from ~10 to 50%, is built and characterised for experimental verification
- Subjects
BANDWIDTHS; BANDPASS filters; SYSTEMS design; DICHROIC filters; ELECTRIC lines; SWITCHING diodes
- Publication
IET Microwaves, Antennas & Propagation (Wiley-Blackwell), 2013, Vol 7, Issue 7, p502
- ISSN
1751-8725
- Publication type
Article
- DOI
10.1049/iet-map.2012.0274