Geodetic Very Long Baseline Interferometry (VLBI) uses radio telescopes as sensor
networks to determine Earth orientation parameters and baseline vectors between the …

Concurrent multi-band observations are a cornerstone of future radio astronomy and very-
long baseline interferometry (VLBI). While some telescopes can incorporate multiple …

This article presents the design, simulations, and measured results of a dual-band coaxial
feed for satellite communication in the 2.4 and 10.45 GHz bands. The feed is designed for …

In order to achieve rotationally symmetric beam, low cross-polarization component, and
small size in a wide frequency band, a new quad-band horn is proposed in this paper by …

This paper proposes a new horn antenna with a coaxial-groove structure using a spline-
taper with small protrusion four bands of 7.1/8.5/20/30 GHz. This horn has a good VSWR …

The next generation Very Long Baseline Interferometry (VLBI) radio telescope sited at the
Yebes Observatory is a fully operative 13.2 m ring-focus reflector covering the frequency …

Antenna systems operating in widely separated dual/triple bands are becoming common
requirements owing to various complex mission requirements. In this work, a Dual CP, Dual …

This paper proposes a new dual-band horn consisting of a tapered section, coaxial grooves
section, and a ring projection installed between both sections in order to achieve rotationally …

IGN Yebes Technology Development Center Page 1 IGN Yebes Technology Development
Center José Antonio López–Fernández, José Antonio López–Pérez, Pablo de Vicente …

The TWIN radio telescope pair at the Geodetic Observatory Wettzell features two identical
antenna constructions reserved for geodetic VLBI within the International VLBI Service for …