Results 261 to 270 of about 66,835 (307)

A Continuously Tunable Sub-Gigahertz Microwave Photonic Bandpass Filter Based on an Ultra-High-Q Silicon Microring Resonator

Journal of Lightwave Technology, 2018
Microwave photonic filter (MPF) is one of the key fundamental subsystems in microwave photonics, and it shows great potentiality in numbers of applications such as optoelectronic oscillator, microwave frequency measurement, and so forth.
Huaqing Qiu, Feng Zhou, Jinran Qie, Yuhan Yao, Xiao Hu, Yuguang Zhang, Xi Xiao, Yu Yu, Jianji Dong, Xinliang Zhang   +9 more
semanticscholar   +1 more source

Ultrawideband Balanced Bandpass Filter

IEEE Microwave and Wireless Components Letters, 2011
A broadside-coupled structure is utilized to design balanced bandpass filter (BPF) with ultrawideband performance. The top and bottom layers of the structure contain tapered microstrip patches. Those patches are coupled via tapered slots in the ground plane, which is located at the middle layer.
openaire   +3 more sources

Bandpass filtering in barium titanate

Applied Optics, 1988
Real-time spatial filteirng is performed in BaTiO(3) using two different holographic geometries. In both geometries white light images of moderate intensity are used to filter selected portions of Fourier transform holograms written in the crystal. The result is a suppression of certain spatial frequencies in the reconstructed images.
L, Pugliese, G M, Morris
openaire   +2 more sources

Substrate Integrated Waveguide Dual-Band and Wide-Stopband Bandpass Filters

IEEE Microwave and Wireless Components Letters, 2018
In this letter, a new coupling structure implemented on a single-layer substrate and its application to design substrate integrated waveguide (SIW) dual-band and wide-stopband bandpass filters are presented.
A. Azad, A. Mohan
semanticscholar   +1 more source

Dielectric square bandpass design

Applied Optics, 1981
Two concepts new in square bandpass design make the design process easier and more systematic. One is the use of adjacent high-order rejection bands. The second is the use of effective index ratio. This paper extends the work of L. I. Epstein [J. Opt. Soc. Am. 42 806 (1952): "The Design of Optical Filters"] and A. Thelen [J. Opt. Soc. Am. 50 1533 (1966)
openaire   +2 more sources

Tunable Bandpass-to-Bandstop Quasi-Yagi–Uda Antenna With Sum and Difference Radiation Patterns

IEEE Transactions on Antennas and Propagation, 2019
A design of the double-element E-plane quasi-Yagi–Uda antenna is proposed offering two different radiation patterns and reconfigurable bandpass-to-bandstop frequency-tunable responses.
S. Malakooti, S. Mousavi, C. Fumeaux
semanticscholar   +1 more source

28-GHz High-Selectivity Bandpass Filters With Dual-Behavior Resonators Using GaAs Technology

IEEE Transactions on Plasma Science, 2019
In this article, the design and implementation of two 28-GHz millimeter-wave on-chip high selectivity bandpass filters with coupled dual-behavior resonators are proposed. The proposed bandpass filters consist of coupled dual-behavior resonators with open/
W. Feng, Yongrong Shi, Xueke Ma, Yiming Shen, W. Che, Q. Xue, Linsheng Wu   +6 more
semanticscholar   +1 more source

Photonic microwave bandpass filters

2007 Second International Conference on Access Networks & Workshops, 2007
Techniques to implement photonic microwave bandpass filters are reviewed. The challenges in implementing these filters for practical applications are discussed.
openaire   +1 more source

New Dual-/Tri-Band Bandpass Filters and Diplexer With Large Frequency Ratio

IEEE transactions on microwave theory and techniques, 2018
To satisfy the simultaneous requirements of future wireless communication systems on short-range high-speed data transmission and long-distance basic coverage, the coexistence of the millimeter-wave and microwave technologies becomes the inexorable trend.
S. Zheng, Z. L. Su, Y. Pan, Z. Qamar, Derek Ho   +4 more
semanticscholar   +1 more source

Interpolative bandpass-A/D-conversion

Signal Processing, 1991
Abstract Interpolative A/D-converters need only few quantizing levels at the A/D-interface. Oversampling combined with noise shaping allow efficient fine quantization by the use of digital interpolation. Because of the high oversampling rate needed, the known approach of interpolative A/D-conversion is restricted to narrowband lowpass-signals.
openaire   +1 more source