Results 21 to 30 of about 45,299 (236)

A 77GHz on-chip microstrip patch antenna with suppressed surface wave using EBG substrate [PDF]

open access: yes, 2013
This paper presents the design of a patch antenna with suppressed surface waves by means of applying an electromagnetic band-gap structure. Establishing th e antenna on high dielectric substrate such as Silicon makes it possible to integrate the ...
Nemati, Mohammad Hossein   +3 more
core   +1 more source

A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges

open access: yesSensors, 2020
Differentially driven devices represent a highly promising research field for radio frequency (RF), microwave (MW), and millimeter-wave (mmWave) designers and engineers.
Yasir I. A. Al-Yasir   +4 more
doaj   +1 more source

A Comparative Study of Narrow/Ultra-Wideband Microwave Sensors for the Continuous Monitoring of Vital Signs and Lung Water Level

open access: yesSensors
This article presents an in-depth investigation of wearable microwave antenna sensors (MASs) used for vital sign detection (VSD) and lung water level (LWL) monitoring.
Anwer S. Abd El-Hameed   +3 more
doaj   +1 more source

Multistep Transitions From Microstrip and GCPW Lines to SIW in 5G 26 GHz Band

open access: yesIEEE Access, 2021
Substrate integrated waveguides (SIW) are a topic of interest for many researchers, due to their power handling capabilities and compatibility with planar processing techniques.
Alfonso Gomez Garcia   +3 more
doaj   +1 more source

Ultra wideband vertical microstrip–microstrip transition

open access: yesIET Microwaves, Antennas & Propagation, 2007
Simple design guidelines for an ultra wideband aperture-coupled vertical microstrip-microstrip transition are presented. The proposed transition uses broadside coupling between elliptical-shaped microstrip patches at the top and bottom layers via an elliptical-shaped slot in the mid-layer.
openaire   +3 more sources

Gridded circular patch antennas [PDF]

open access: yes, 1999
The performance of circular microstrip patch antennas is presented where the conducting patch and ground plane are constructed from a grid. Improved cross polarization, mode suppression, and band-width are possible, but are accompanied by lower gain and ...
Langley, Richard J.   +8 more
core   +1 more source

Cutting-Edge Microwave Sensors for Vital Signs Detection and Precise Human Lung Water Level Measurement

open access: yesMagnetism
In this article, a comprehensive review is presented of recent technological advancements utilizing electromagnetic sensors in the microwave range for detecting human vital signs and lung water levels.
Anwer S. Abd El-Hameed   +3 more
doaj   +1 more source

Optimization of a 12.5 GHz microstrip antenna array using Taguchi's method [PDF]

open access: yes, 2011
This Article is provided by the Brunel Open Access Publishing Fund - Copyright 2011 @ Hindawi PublishingThis paper presents Taguchi's optimization method implemented in the design of a single feed (without any matching network) 5×5 microstrip antenna ...
K. Tsiakmakis   +9 more
core   +1 more source

DEFECTED CONCRETE POST DETECTION THROUGH ANTENNA ARRAY COUPLING EFFECT [PDF]

open access: yesJournal of Engineering Science and Technology, 2017
In this paper, a proposed defected concrete post detection system is introduced. The proposed system consists of two compact microstrip broad side antenna arrays resonating at 1 GHz with dimensions of 45 cm by 13.2 cm for each antenna array and a weight ...
TAMER G. ABOUELNAGA, KAMEL S. SULTAN
doaj  

Design of a Super Compact UWB Filter Based on Hybrid Technique with a Notch Band Using Open Circuited Stubs

open access: yesAdvanced Electromagnetics, 2020
This paper presents a new design of a super compact Ultra wideband (UWB) band-pass filter (BPF) with rejection of X-band satellite applications. For covering the UWB bandpass, the proposed filter is realized using hybrid technique which is achieved by ...
H. El Omari El Bakali   +4 more
doaj   +1 more source

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