A Wideband Quadraxial Feed for Compact Dual Polarised Vivaldi Antenna Elements
Paper i proceeding, 2025

This work presents a fully metallic dual polarised Vivaldi antenna element for K/Ka-band SatCom phased arrays. The element is fed by a novel quadraxial-to-quadridge waveguide transition, which is designed for connectorless integration with a PCB-mounted beamformer IC network. The Vivaldi unit cell has an active reflection coefficient of better than -10 dB for scanning up to 60 degrees in the E-, D-, and H-planes in the K/Ka SatCom bands. A back-to-back (B2B) configuration of the quadraxial transition is 3D-printed in metal using the laser powder-bed fusion technique. A tolerance study shows how an initial gap between the quadraxial pins of approximately 30 μm impacts the B2B insertion loss, while the zero-gap post-processed B2B structure features a reflection of -13 dB and the transmission coefficient of -0.7 dB, in both simulations and measurements and in both bands of interest.

SatCom

additive manufacturing

Vivaldi

3D printing

active antenna

LEO

BFIC

phased array

Författare

Teanette van der Spuy

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Rob Maaskant

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Lukas Nystrom

Satcube AB

Johan Malmstrom

Saab

Henrik Holter

Ericsson AB

Eucap 2025 19th European Conference on Antennas and Propagation


9788831299107 (ISBN)

19th European Conference on Antennas and Propagation, EuCAP 2025
Stockholm, Sweden,

Ämneskategorier (SSIF 2025)

Annan elektroteknik och elektronik

Drivkrafter

Innovation och entreprenörskap

DOI

10.23919/EuCAP63536.2025.10999760

Mer information

Senast uppdaterat

2025-06-19