Results 81 to 90 of about 544,807 (305)
Compact H-Plane CLAF-SIW Horn Antenna With Phase Front Correction
IEEE AccessThis work presents an H-plane contactless air-filled substrate-integrated waveguide (CLAF-SIW) horn antenna, whose directivity is enhanced by incorporating a metalens along the horn flaring.
Andres Biedma-Perez +3 more
doaj +1 more source
Dielectric-Resonator- Fed Active Horn Antenna
, 2007 本論文藉由整合號角狀天線（horn antenna）、介電共振器（dielectric resonator）與功率放大器(power amplifier)，成為一可攜式的高指向性天線。在帶狀線與波導的轉接中，藉由介電共振器而增加信號耦合的效率。當此轉接方式用於號角天線時，相對於傳統轉接方式，介電共振器的使用可以提供項對寬的頻寬並改善天線的幅射場型。 藉由天線與功率放大器的結合，可得到更高之天線增益。最後，將兩個號角天線組合於一基板上，經分析與設計後與可得到和(sum)與差模(difference ...
莊閔旭, Chuang, Min-Hsi
core
Advanced Electronic Materials, EarlyView.A compact passive engineered surface converts changes in microwave frequency into many distinct illumination patterns, allowing nearby objects to be imaged without mechanical scanning, active tuning, or a large antenna array. Operating from 18 to 28 GHz, the single‐port system uses measured field patterns to reconstruct metallic targets and distinguish
Mohammed H. Arif +6 more
wiley +1 more source
DESIGN OF H-PLANE SECTORAL HORN ANTENNA FOR MICROWAVE APPLICATIONS USING MATLAB
Journal of Engineering and Sustainable Development, 2018 Wireless communications has become more essential in our life, as well as considered as the one of fastest growing segment in the communication business. The antenna was and still the main component of any wireless communication system.
Mushreq Abdulhussain Shuriji
doaj
Double ridge horn antenna for antenna measurement
, 2013 The thesis deals with broadband antennas for measurement purposes. A ridged horn antenna has been selected for this concept, designed for the frequency range 0.9 GHz to 9 GHz.
Vašina, Petr
core
A Magnetically Programmable Metasurface for Versatile Scattering Manipulation in the Microwave Band
Advanced Electronic Materials, EarlyView.A magnetically programmable metasurface converts external magnetic fields into microwave phase modulation, thereby removing surface bias wiring. This mechanism achieves both retro‐reflective beam control and radar scattering suppression, offering a contactless, barrier‐penetrating solution for on‐demand electromagnetic scattering reconfiguration ...
Lihao Zhu +7 more
wiley +1 more source
Aerosol-printed horn-shaped antenna on LTCC
, 2022 S.2461-2464This paper presents an aerosol-printed horn-shaped antenna on LTCC designed to operate in the 60 GHz frequency range. This design shows the potential of aerosol printing to manufacture LTCC integrated horn antennas at millimeter-waves ...
Ihle, M. +4 more
core +1 more source
Autonomous Charging and Battery Swapping for Unmanned Aerial Vehicles: A Review
Advanced Intelligent Systems, EarlyView.This review evaluates major autonomous charging and battery swapping methods for unmanned aerial vehicles (UAVs) against a single question: how close each is to sustained unattended operation. Rather than ranking them by charging performance, it identifies the limitation that most restricts each method, and briefly outlines the supporting technologies ...
Zelin Wu +5 more
wiley +1 more source
3D-printed low-cost choke corrugated Gaussian profile horn antenna for Ka-band. [PDF]
Sci Rep, 2023 Zárate YD +3 more
europepmc +1 more source
Angewandte Chemie, EarlyView.Direct synthesis of sulfonimide‐based polymers of intrinsic microporosity enables comparison with compositionally similar flexible analogs. Incorporation of a common pore‐filling transport medium drives these fundamentally different polymer architectures toward similar bulk conductivity and mechanical properties while revealing distinct microscopic ion‐
Abraham Herzog‐Arbeitman +8 more
wiley +1 more source