Dual-Mode Reconfigurable Filter With Asymmetrical Transmission Zeros and Center Frequency Control
Authors:
- 28 August 2006
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Microwave and Wireless Components Letters
- Vol. 16 (9) , 499-501
Abstract
A reconfigurable bandpass filter with asymmetrical responses is demonstrated using a dual-mode microstrip resonator. The proposed topology introduces several fixed and switchable perturbations to control the center frequency and the location of the transmission zeros of the filter. The tuning mechanism consists of capacitively loading the edges of a modified square patch resonator, in order to manipulate the current distribution of the degenerate modes. This operation results in asymmetrical responses with a center frequency tuning ratio of 10% at X band, and angular transmission zero displacement of Deltaomegaz = 3.5rad/s or greater in both a lower and higher side of the passbandKeywords
This publication has 8 references indexed in Scilit:
- Dual-Mode Reconfigurable Filter for 3-D System-on-Package (SOP) Integration2005
- Bandpass filter design using a microstrip triangular loop resonator with dual-mode operationIEEE Microwave and Wireless Components Letters, 2005
- New triangular microstrip loop resonators for bandpass dual-mode filter applications2005
- Comments on “Description of Coupling Between Degenerate Modes of a Dual-Mode Microstrip Loop Resonator Using a Novel Perturbation Arrangement and Its Dual-Mode Bandpass Filter Applications”IEEE Transactions on Microwave Theory and Techniques, 2004
- Realization of a dual-mode bandpass filter exhibiting either a Chebyshev or an elliptic characteristic by changing perturbation's sizeIEEE Microwave and Wireless Components Letters, 2004
- Adaptive synthesis and design of resonator filters with source/load-multiresonator couplingIEEE Transactions on Microwave Theory and Techniques, 2002
- Bandpass characteristics of new dual-modemicrostrip square loop resonatorsElectronics Letters, 1995
- Microstrip bandpass filter using degenerate modes of a microstrip ring resonatorElectronics Letters, 1972