Results 41 to 50 of about 397,805 (170)

Return loss of LPDA antenna

, 2020
The return loss of a log-periodic dipole antenna measured by an Agilent FieldFox 9927A VNA over a frequency range from 50 MHz to 8 GHz is presented.
openaire   +1 more source

The simulation of S-parameters of the Wilkinson power divider

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
Wilkinson power divider (WPD) currently compete successfully with other devices, as study new features of their designs provide the selection of new technologies for various applications.
R. A. Zhernosekov, V. T. Pershin
doaj  

A Review of Microstrip Patch Antenna-Based Passive Sensors

Sensors
This paper briefly overviews and discusses the existing techniques using antennas for passive sensing, starting from the antenna operating principle and antenna structural design to different antenna-based sensing mechanisms.
Zain Ul Islam, Amine Bermak, Bo Wang
doaj   +1 more source

Modified series-fed dipole pair antenna using split-ring resonator directors for dual-band operation

Journal of Taibah University for Science, 2018
The performance of the conventional Series Fed Dipole Pair Antenna (SDP) antenna is raised by adding Split Ring Resonator (SRR). Firstly, a conventional SDP antenna that operates in the frequency range of 1.8–2.62 GHz is designed by adjusting the lengths
Arun Kumar, Manisha Choudhary
doaj   +1 more source

Power divider based on vertical elliptical directional couplers with increased isolation and bandwidth

The Journal of Engineering, 2019
In this study, a novel high-isolation wideband divider based on multi-layer elliptical defected ground structure coupler is presented along with its analytical theory and design procedure.
Chenhao Wang, Jie Cui, Shanhong Guo, Renli Zhang   +3 more
doaj   +1 more source

Metallic post-array loaded cylindrical dielectric resonator antenna

The Journal of Engineering, 2016
An investigation of a novel cylindrical dielectric resonator antenna (DRA) configuration has been carried out. It is shown that two resonances including the full- and half-cylindrical HE(11δ)-like modes can coexist simultaneously at different frequencies
Byeong-Yong Park, Tae-Wan Kim, Seong-Ook Park   +2 more
doaj   +1 more source

Tri-band MIMO Antenna for WLAN, WiMAX and Defence System & Radio Astronomy Applications

Advanced Electromagnetics, 2018
In this paper, an efficacious and impermeable undeviating MIMO consist of 70 x 50 x 0.4 mm3 is used for WLAN, defence system & radio astronomy and WiMAX applications.
K. B. V. Babu, B. Anuradha
doaj   +1 more source

Design and feed two models for microstrip antenna in two different feed methods and compare their properties

Tikrit Journal of Pure Science
In any wireless communication, the antenna plays a very important role. The need in this technology is to reduce the size of the antenna, weight, and cost with a low profile, high performance, and low return loss (RL), which is what researchers are ...
Ammar Mohammed, Mshari Ayed Asker Alshamri   +1 more
doaj   +1 more source

Design of a compact broadband circularly polarized RFID antenna

Gong-kuang zidonghua, 2015
For problem that existing circularly polarized antenna is difficult to meet requirements of broadband and miniaturized application simultaneously, a compact broadband circularly polarized RFID antenna for global ultrahigh frequency(UHF) RFID read-write ...
HUANG Kai, ZHANG Ran, BEI Lulu
doaj   +1 more source

Basic Study on Measurement of Return Loss and Smith Chart Change Using Microstrip Patch Antenna with Concentration Transition for Non-invasive Blood Glucose Measurement. [PDF]

J Electr Eng Technol, 2023
Yu RH, Rhee SY, Kim KH.
europepmc   +1 more source