39 research outputs found
A Novel Reconfigurable Filter Using Periodic Structures
Abstract- In this paper, a reconfigurable filter is realized using electromagnetic bandgap structures (EBG) which can be switched from bandpass to bandstop filter at the same frequency by PIN diodes. A unit model for the reconfigurable filter is derived by equivalent circuit approach and full wave electromagnetic simulation is used for extracting the values of the lumped elements. The extracted parameters show that the bandpass and bandgap effect of the EBG cells. The dispersion diagram is obtained for the structure by combining the commercial software and the Floquet's theorem. The PIN diodes are used to switch from bandpass to bandstop filter. The measurement results show that the insertion loss in bandpass filter is around 2.1 dB and the 3-dB bandwidth is around 5.2 GHz which is suitable for wideband applications. For the bandstop filter, the 20 dB rejection bandwidth is 5.3 GHz and the insertion loss in the pass band is 1.6 dB
Optical control on GaAs fet bandpass distributed amplifier
Microwave and Optical Technology Letters18141-43MOTL
Analysis of periodically corrugated gyrotropic waveguide
10.1002/(SICI)1098-2760(19990520)21:43.0.CO;2-6Microwave and Optical Technology Letters214257-261MOTL
Bragg reflection filter by periodic photoexcitation of a semiconductor waveguide
10.1002/(SICI)1098-2760(19991020)23:23.0.CO;2-AMicrowave and Optical Technology Letters232117-120MOTL
Periodically photoinduced Bragg reflection filter
10.1109/EUMA.1999.3383361999 29th European Microwave Conference, EuMC 1999144-4
Modeling of a twin-rib nonreciprocal phase shifter by the spectral-index method
10.1002/1098-2760(20010120)28:23.0.CO;2-DMicrowave and Optical Technology Letters282110-113MOTL
Periodic-Structure Photoexcitation of a GaAs Image Guide for Selective Optoelectronic MMW Control
Optically controlled Bragg reflection characteristic of millimeter waves in a corrugated dielectric waveguide
Microwave and Optical Technology Letters176352-357MOTL
Optically controlled frequency selective surface with semi-conductor substrate
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)1158-161IAPS
Leaky wave radiation in a corrugated ferrite slab under arbitrary orientation of magnetization
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)2702-705IAPS