Results 31 to 40 of about 13,537 (225)
A Fully-Integrated Quad-Band GSM/GPRS CMOS Power Amplifier [PDF]
, 2008 Concentric distributed active transformers (DAT) are used to implement a fully-integrated quad-band power amplifier (PA) in a standard 130 nm CMOS process.
Aoki, Ichiro +8 more
core +1 more source
PENGARUH BAHAN DIELEKTRIK DALAM UNJUK KERJA WAVEGUIDE
JIF (Jurnal Ilmu Fisika), 2012 Makalah ini menyajikan hasil studi pengukuran nilai Voltage Standing Wave Ratio (VSWR) dan power reflection factor (PRF) untuk berbagai jenis bahan dielektrik yang akan disisipkan pada saluran transmisi yang beroperasi di frekuensi 9 GH dan dibandingkan ...
Lince Markis
doaj +1 more source
A telemetry antenna system for unmanned air vehicles [PDF]
, 2010 This paper presents a low VSWR high gain telemetry antenna system manufactured for UAVs that provides 360± coverage in the roll plane of the UAV. Proposed telemetry antenna system includes four telemetry antennas, one power divider that has one input and
Dogan, Mustafa +3 more
core
Advanced Materials Technologies, EarlyView.This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane +4 more
wiley +1 more source
Optimization of aperture coupled microstrip patch antennas [PDF]
, 2010 Aperture coupled microstrip patch antennas (ACMPA) are special class of microstrip antennas with high gain and wide impedance bandwidth. These antennas differ from other microstrip antennas with their feeding structure of the radiating patch element ...
Dogan, Mustafa +5 more
core
Advanced Science, EarlyView.We present a textile‐compatible, self‐healing liquid metal ink and a dual‐mask printing technique for high‐resolution patterning. Using this approach, we demonstrate high‐performance millimeter‐wave (mmWave) electronic textiles that exhibit exceptional insensitivity to deformation.
Lu Ju +11 more
wiley +1 more source
Bandwidth Enhancement of Balanced Folded Loop Antenna Design for Mobile Handsets Using Genetic Algorithms [PDF]
, 2008 YesIn this paper, a simple folded loop antenna (FLA) for handsets with relatively wide- band impedance, designed and optimized using genetic algorithms (GA).
Abd-Alhameed, Raed A. +2 more
core
Wideband and Frequency‐Reconfigurable Loop Antenna for Sub‐6 GHz Applications
IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.This work tackles the longstanding bandwidth limitation of loop antennas by introducing a compact, symmetrical design that integrates a microstrip balun and periodic varactor loading. Unlike existing methods that often compromise symmetry or beam control, the proposed structure achieves both wide impedance bandwidth and frequency reconfigurability ...
Amir Jafargholi, Romain Fleury
wiley +1 more source
Transmission coefficient estimation based on antenna voltage standing wave ratio under plasma sheath
AIP Advances, 2018 Radio blackout has confused the aerospace industry for decades. The highly attenuated caused by the plasma sheath is the main cause of radio blackout. The transmission coefficient depends on the relationship between plasma density, collision frequency ...
Min Yang +4 more
doaj +1 more source
Desain dan Implementasi Rectenna Hexagonal Patch Array Pada Frekuensi 2,4 GHz
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems), 2018 Abstrak– Penelitian rectenna yang dilakukan terdiri atas dua bagian yaitu antena yang berbentuk hexagonal array dan rectifier. Rectenna hexagonal array ini didesain agar bisa menangkap gelombang radio (RF) pada frekuensi 2,4 GHz yang dapat ...
Herma Nugroho rono adi Kusumo +2 more
doaj +1 more source