Compact Ka-band lens antennas for LEO satellites

JR Costa, CA Fernandes, G Godi… - … on Antennas and …, 2008 - ieeexplore.ieee.org
Two new compact lens antenna configurations are presented and compared for data link
communications with LEO satellites at 26 GHz. These lenses match a secant type radiation …

Reflector synthesis for wide-scanning focal plane arrays

A Dubok, A Al-Rawi, G Gerini… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
A new complex offset double-reflector configuration for a wideband focal plane array (FPA)
is presented which is optimized for Ka-band applications with a scan range of±20° in the …

Design of wideband omnidirectional dual-reflector antennas in millimeter waves

RA Penchel, SR Zang, JR Bergmann… - IEEE Antennas and …, 2019 - ieeexplore.ieee.org
The work investigates the electromagnetic performance of omnidirectional dual-reflector
antennas designed to operate with a frequency bandwidth larger than 45%(25-40 GHz). We …

Antenna for multiple frequency bands

SK Rao, S Chun - US Patent 9,246,234, 2016 - Google Patents
An exemplary embodiment of an antenna in accordance with the present invention utilizes a
sub-reflector and a main reflector with each of them having its own focal-ring type geometry …

Axis-displaced dual-reflector antennas for omnidirectional coverage with arbitrary main-beam direction in the elevation plane

FJ da Silva Moreira… - IEEE Transactions on …, 2006 - ieeexplore.ieee.org
The synthesis of classical dual-reflector antennas suited to provide omnidirectional
coverages with arbitrary main-beam direction in the elevation plane is discussed. Both sub …

[图书][B] Преобразование и излучение электромагнитных волн открытыми резонансными структурами. Моделирование и анализ переходных и …

В Кравченко, Ю Сиренко, К Сиренко - 2022 - books.google.com
Начально-краевые задачи, рассмотренные в книге, описывают неустановившиеся
электромагнитные поля, формируемые компактными, волноводными и …

Omnidirectional ADE antenna with a GO-shaped main reflector for an arbitrary far-field pattern in the elevation plane

JR Bergmann, FJS Moreira - IET Microwaves, Antennas & Propagation, 2009 - IET
This work presents a formulation for shaping the main reflector of a dual-reflector antenna
designed to offer an omnidirectional coverage with an arbitrary radiation pattern in the …

GO shaping of omnidirectional dual-reflector antennas for a prescribed equi-phase aperture field distribution

FJ da Silva Moreira, A Prata… - IEEE Transactions on …, 2007 - ieeexplore.ieee.org
A formulation is presented for shaping dual-reflector antennas designed to offer an
omnidirectional coverage. The shaping procedure is based on geometrical optics (GO) …

Rigorous substantiation of the method of exact absorbing conditions in time-domain analysis of open electrodynamic structures

O Shafalyuk, P Smith, L Velychko - Progress in Electromagnetics Research …, 2012 - jpier.org
Exact absorbing conditions are used in computational electrodynamics of nonsine waves for
truncating the domain of computation when replacing the original open initial boundary …

Amplitude and Phase Synthesis at Cylindrical Apertures of Omnidirectional Dual-Reflector Antennas for Uniform Coverage

PAB Leão, TVB Faria… - IEEE Antennas and …, 2024 - ieeexplore.ieee.org
This work presents a simple formulation to synthesize amplitude and phase distributions at
cylindrical apertures of omnidirectional dual-reflector antennas. Adopting a tapered …