Results 21 to 30 of about 211,037 (301)

Dual Band Filter-Antenna with Fixed Low Band and Frequency-Agile High Band for Wireless Communications

open access: yesAdvanced Electromagnetics, 2020
This work proposes a design of compact filter-antenna with fixed and frequency-agile bands for wireless communications and cognitive radio (CR) systems.
H. A. Atallah
doaj   +1 more source

A Dual Band Belt Antenna [PDF]

open access: yes, 2008
This paper presents an antenna structure design using a standard belt for wearable applications. The antenna arouse from a body of research work on wearable metallic structures functioning as antennas for wireless on-body ...
Batchelor, John C.   +1 more
core   +1 more source

Design of High Performance Microstrip Dual-Band Bandpass Filter [PDF]

open access: yes, 2015
This paper presents a new design of dual-band bandpass filters using coupled stepped-impedance resonators for wireless systems. This architecture uses multiple couple stubs to tune the passband frequencies and the filter characteristics are improved ...
Khajavi, N., Majidifar, S., Makki, S. V.
core   +4 more sources

Design and analysis of defected ground structure transformer for dual-band antenna

open access: yesThe Journal of Engineering, 2014
This study presents a novel dual-band antenna design methodology utilising a dual-frequency impedance transformer with defected ground structure (DGS).
Wai-Wa Choi   +4 more
doaj   +1 more source

A Dual-Band Dual-Polarized Omnidirectional Antenna

open access: yesFrontiers in Physics, 2020
A dual-band dual-polarized omnidirectional antenna is investigated. The two bands are generated by a lower circular patch and an upper circular patch, respectively.
Hui Gu, Lei Ge, Jihong Zhang
doaj   +1 more source

Key Technology of Mixed Matching Circuit for Miniaturizing Dual-Band Antenna

open access: yesIEEE Access, 2022
A mixed matching circuit for miniaturizing dual-band antenna is introduced and verified in this study. Two L-shaped matching circuit for miniaturization are cascaded to interpret the theory of operation in accordance with the dual-band allocations on the
Daoheng Zhu   +3 more
doaj   +1 more source

Extended Composite Right/Left-Handed Transmission Line and Dual-Band Reactance Transformation

open access: yesJournal of Electrical and Computer Engineering, 2010
An extended composite right/left-handed transmission line is introduced, and its dual-band bandpass filter characteristics are explored. Novel reactance transformations, derived from this transmission line, are formulated to transform a low-pass ...
Yuming Zhang, Barry Spielman
doaj   +1 more source

Modified U Slot Patch Antenna with Large Frequency Ratio for Vehicle-to-Vehicle Communication

open access: yesSensors, 2023
This paper presents a single-fed, single-layer, dual-band antenna with a large frequency ratio of 4.74:1 for vehicle-to-vehicle communication. The antenna consists of a 28 GHz inset-fed rectangular patch embedded into a 5.9 GHz patch antenna for dual ...
Sandhiya Reddy Govindarajulu   +4 more
doaj   +1 more source

Dual band fss with fractal elements [PDF]

open access: yes, 1999
Experimental and computed results of a frequency selective surface (FSS) based on a certain type of fractal element are presented. The fractal element is a two iteration Sierpinski gasket dipole.
Rahmat-Samii, Y, Romeu Robert, Jordi
core   +2 more sources

Compact Dual Band Antenna Design for Ku / Ka Band Applications

open access: yesAdvanced Electromagnetics, 2017
This communication proposes a compact 16 GHz / 30 GHz dual band antenna design for Ku / Ka band applications. The antenna consists of two layers with lower layer having the fed patch and the upper layer having non-periodic element array.
A. Kandwal
doaj   +1 more source

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