Results 301 to 310 of about 95,680 (349)

MEMS‐reconfigurable bandpass filter

Microwave and Optical Technology Letters, 2008
AbstractThis article presents a MEMS‐based bandpass filter with a reconfigurable frequency response. The proposed device consists of a stub‐loaded Branch‐Line Coupler in artificial transmission line technology, resulting in a very compact structure. Furthermore, by using a micro electro mechanical system resistive switch, a reconfigurable frequency ...
Laura Corchia, Giuseppina Monti, Luciano Tarricone   +2 more
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Superconductive Bandpass Filters

1994
This paper reports on superconductive bandpass filters with several functions or with a high power handling capability. A frequency shift of several megahertz and a successful switching operation due to thermal switches were confirmed in four-pole microstrip filters with a frequency of 1.5 GHz, a bandwidth of 1.5% and a loss of less than 0.7 dB. It was
Yasuhiro Nagai, Naobumi Suzuki, Osamu Michikami, David F. Hebert, Theodore Van Duzer   +4 more
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Multiple resonance FTR filters for nonpolarizing bandpass filters

Applied Optics, 1984
A design procedure is given for multiple resonance FTR filters which are required to be nonpolarizing for a specific wavelength and angle of incidence. The optimum thickness of the buffer layer is derived to make the phase velocities of TE and TM modes coincide in a twin-waveguide system.
H, Kitajima, K, Fujita, H, Cizmic
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Zolotarev bandpass filters

IEEE Transactions on Microwave Theory and Techniques, 2001
Zolotarev rational functions may be used in certain bandpass filter applications for which two narrower passbands are required. Coupled-resonator low-pass prototypes for narrow bandpass filters based on even- and odd-degree Zolotarev functions are synthesized using a transformed variable.
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Narrow-Bandpass Waveguide Filters

IEEE Transactions on Microwave Theory and Techniques, 1972
A procedure is described whereby narrow-bandpass waveguide filters having ripple in both the passbands and stopbands can be synthesized in the form of coupled waveguide cavities. Orthogonal modes in square or circular waveguides are employed to enable negative coupling elements to be realized.
A.E. Atia, A.E. Williams
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Bandpass filtering with lowpass filters

Journal of the Franklin Institute, 1963
Abstract Lowpass filters may achieve the effects of bandpass filtering by heterodyning the bandpass wave to obtain the “in-phase” and “quadrature” components and filtering these with suitable lowpass filters. The impulse responses for the lowpass filters are determined in a simple way from the desired bandpass impulse response.
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Optimal Conjunctive Granulometric Bandpass Filters

Journal of Mathematical Imaging and Vision, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Compact wideband bandpass filter

IEEE Microwave and Wireless Components Letters, 2006
Designing wideband bandpass filters (BPF) with parallel-coupled microstrip lines requires tight coupling resulting in close separation between the lines and difficulty of fabrication. Here, it is shown that the etched slots in the ground plane of the parallel coupled lines can significantly increase the coupling.
M.K. Mandal, S. Sanyal
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Bandpass filtering in BaTiO3

Annual Meeting Optical Society of America, 1988
White light images are used to perform real-time spatial filtering in BaTiO3 in two different geometries. White light images act as spatial filters by erasing certain frequency components of photorefractive Fourier transform holograms. As a result, these frequency components are suppressed in the reconstructed holographic images.
Lenore Pugliese, G. Michael Morris
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Voltage tunable bandpass filter

2015 Signal Processing Symposium (SPSympo), 2015
A voltage tunable bandpass filter is presented. The filter is realized in microstrip technology using two stepped-impedance resonators. The voltage tuning is provided by means of varactor diodes. The filter has fixed absolute bandwidth of 30 MHz in the frequency range from 375 MHz to 915 MHz. The insertion loss is lower than 5 dB and return loss better
Arkadiusz Golaszewski, Adam Abramowicz
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