Dual-polarized directive ultrawideband antenna integrated with horn and Vivaldi array
A novel ultrawideband dual-polarized H-plane horn antenna incorporated with a Vivaldi
array is proposed. Aiming at ultrawide low-frequency applications that require dual …
array is proposed. Aiming at ultrawide low-frequency applications that require dual …
Optimization and realization of quadruple-ridge flared horn with new spline-defined profiles as a high-efficiency feed from 4.6 GHz to 24 GHz
In this communication, we present a new optimization and realization of a quadruple-ridge
flared horn (QRFH) as a feed for reflector antennas of the square kilometer array (SKA) …
flared horn (QRFH) as a feed for reflector antennas of the square kilometer array (SKA) …
Multi-level approximations for fast and accurate antenna noise temperature calculation of dual-reflector antennas
DIL de Villiers, R Lehmensiek - IEEE Transactions on Antennas …, 2022 - ieeexplore.ieee.org
Antenna noise temperature calculation for a reflector antenna system can be a
computationally expensive operation if the structure is electrically large. Several …
computationally expensive operation if the structure is electrically large. Several …
Dielectrically loaded quad-ridge flared horn for beamwidth control over decade bandwidth—optimization, manufacture, and measurement
J Flygare, M Pantaleev - IEEE Transactions on Antennas and …, 2019 - ieeexplore.ieee.org
We present the design, manufacture, and measured performance of a dielectrically loaded
quad-ridge flared horn (QRFH) feed for decade bandwidth radio astronomy application. The …
quad-ridge flared horn (QRFH) feed for decade bandwidth radio astronomy application. The …
Beyond-Decade Ultrawideband Quad-Ridge Flared Horn With Dielectric Load From 1 to 20 GHz
In this article, we present a novel dielectrically loaded quad-ridge flared horn (QRFH) as a
reflector feed with beyond-decade ultrawideband performance. The dielectric is machined in …
reflector feed with beyond-decade ultrawideband performance. The dielectric is machined in …
Water vapour radiometry in geodetic very long baseline interferometry telescopes: Assessed through simulations
The accuracy of geodetic Very Long Baseline Interferometry (VLBI) is affected by water
vapour in the atmosphere in terms of variations in the signal propagation delay at the …
vapour in the atmosphere in terms of variations in the signal propagation delay at the …
Broadband small-aperture high-gain ridge horn antenna array element
This letter presents the design and characterization of an octave-bandwidth, small-aperture,
linearly polarized, high-gain horn antenna operating in the 6–12 GHz band for active arrays …
linearly polarized, high-gain horn antenna operating in the 6–12 GHz band for active arrays …
An ultrawideband nested coaxial waveguide feed antenna for radio astronomy
X Du, T Johnson, T Landecker… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
We describe a new type of ultrawideband feed antenna based on nested coaxial
waveguides. The feed is for radio astronomy applications and covers two closely spaced …
waveguides. The feed is for radio astronomy applications and covers two closely spaced …
First order design of a quadruple-ridged flared horn for the ngVLA Band 1
R Lehmensiek, DIL De Villiers - 2022 16th European …, 2022 - ieeexplore.ieee.org
The design of an all-metal quadruple-ridged flared horn (QRFH) feed antenna for the ngVLA
optics is presented. The feed is required to operate over the 1.2 GHz-3.5 GHz frequency …
optics is presented. The feed is required to operate over the 1.2 GHz-3.5 GHz frequency …
[图书][B] Dielectrically Loaded Quad-ridge Flared Horns for Ultra Wideband Reflector Feed Applications in Radio Astronomy
J Flygare - 2022 - search.proquest.com
Reflector-based radio telescopes are used as tools for observations in both radio astronomy
and space geodesy. To observe the weak sources in space, highly sensitive receivers …
and space geodesy. To observe the weak sources in space, highly sensitive receivers …