Results 61 to 70 of about 740,918 (215)

Miniaturized microstrip bandpass filter based on adjacent-nonadjacent coupling

open access: yesDianzi Jishu Yingyong, 2018
A miniaturized microstrip bandpass filter is presented. The proposed filter consists of four folded stepped-impedance resonators. As compared with its corresponding conventional uniform-impedance resonator or stepped-impedance resonator counterparts, the
Rao Xiaohong   +4 more
doaj   +1 more source

Do We Really Need Frequency‐Selective Surface and Metasurface Reflectors for Antenna Gain Enhancement, or Are Metallic Reflectors Enough?

open access: yesInternational Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
Enhancing antenna gain remains a key requirement in modern wireless systems, particularly with the rapid evolution of 5G, emerging 6G networks, satellite links, and high‐resolution radar. Recent research trends increasingly rely on frequency‐selective surfaces (FSSs) and metasurface‐based reflectors, which offer precise electromagnetic wave control ...
A. J. A. Al-Gburi, Mohammad Rezwan Habib
wiley   +1 more source

Modelling and validation of a simple and compact wide upper stop band ultra-wideband bandpass filter

open access: yesThe Journal of Engineering, 2014
A compact ultra-wideband (UWB) bandpass filter (BPF) is proposed based on end coupled microstrip transmission line, defected ground structure and defected microstrip structure.
Somdotta Roy Choudhury, Santanu Das
doaj   +1 more source

A Compact 4 × 4 Dual‐Circularly Polarized Array Antenna With Beam‐Scanning Capability for S‐Band Satellite Uplink/Downlink Communications

open access: yesInternational Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
This paper presents a compact dual circularly polarized (CP) stacked‐patch antenna and a corresponding sequentially rotated 4 × 4 array for S‐band satellite communication applications. The driven patch is excited through two orthogonal H‐shaped slots that couple energy from the feedline, while a parasitic patch placed above the driven patch and ...
Muhammad Adnan   +3 more
wiley   +1 more source

Microstrip/Coplanar Waveguide Hybrid Bandpass Filter With Electromagnetic Coupling

open access: yes, 2016
Microstrip/coplanar waveguide (CPW) hybrid bandpass filter with electromagnetic (EM) coupling has been developed, and a hybrid tri-band bandpass filter has been proposed.
Hong, Jia-Sheng   +3 more
core   +1 more source

Reflectionless bandpass filter with flat passband, high selectivity, and enhanced out-of-band suppression

open access: yesTongxin xuebao
Currently, the design of reflectionless filters was challenged by insufficient selectivity and insufficient flatness. Therefore, a two-port microstrip reflectionless bandpass filter topology was proposed to provide a reference for addressing these ...
Chen Wei   +3 more
doaj   +2 more sources

Optical Control Strategies for Advanced Reconfigurable Transmitarray Antennas Operating in mmWave

open access: yesInternational Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
Next‐generation radar and wireless communication networks increasingly rely on reconfigurable transmitarray antennas (RTAs) to achieve high‐gain beamforming via real‐time phase adjustment. While conventional RTA designs frequently integrate PIN diodes for their rapid switching capabilities and reliable isolation, the associated biasing circuitry ...
Hamza Kaouach   +4 more
wiley   +1 more source

MINIATURIZED BANDPASS FILTER BASED ON PEANO FRACTAL GEOMETRY WITH HIGHER HARMONIC SUPPRESSION

open access: yesAl-Qadisiyah Journal for Engineering Science, 2011
A novel design for compact microstrip bandpass filter design is presented for use in the application of modern wireless communication systems. The proposed filter structure is composed of two fractal-based microstrip resonators.
Wasan A. Jehad, Yaqeen S. Mezaal
doaj  

Compact Microstrip Bandpass Filter With Multispurious Suppression Using Quarter-Wavelength and Half-Wavelength Uniform Impedance Resonators

open access: yesIEEE Access, 2018
In this paper, an effective and simple method for suppressing the spurious frequency in bandpass filter is proposed. Quarter- and half-wavelength uniform impedance resonators are used to generate the filtering function.
Kai-Ran Xiang, Fu-Chang Chen
doaj   +1 more source

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