A Wideband Leaky-Wave Lens Antenna with Annular Corrugations in the Ground Plane

A Wideband Leaky-Wave Lens Antenna with Annular Corrugations in the Ground Plane

Bosma, S. (TU Delft Tera-Hertz Sensing)
van Rooijen, N. (TU Delft Tera-Hertz Sensing)
Alonso Del Pino, M. (TU Delft Tera-Hertz Sensing)
Llombart, Nuria (TU Delft Tera-Hertz Sensing)

2022

We present a resonant leaky-wave lens antenna, fed by a circular waveguide with annular corrugations in the ground plane. The proposed leaky-wave feed reduces the impact of the spurious TM0 leaky-wave mode in all planes over a wide bandwidth while reducing assembly complexity compared to previous methods. The proposed leaky-wave antenna has an aperture efficiency above 80%, a return loss below -15 dB, and a cross-polarization level below -20 dB over a bandwidth from 110-220 GHz (2:1). We have fabricated and measured a WR-5 band (140-220 GHz) antenna prototype with a lens diameter of 3 cm that achieves excellent agreement between measurement and simulation in terms of return loss, directivity, and gain.

leaky-wave antenna
lens antenna
wideband antennas
millimeter-wave
and submillimeter-wave antennas

http://resolver.tudelft.nl/uuid:db8c2e32-c7d0-42b4-8f07-c3d18c6f8ad3

https://doi.org/10.1109/LAWP.2022.3176884

2022-10-20

1536-1225

IEEE Antennas and Wireless Propagation Letters, 21 (8), 1649-1653

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

journal article

© 2022 S. Bosma, N. van Rooijen, M. Alonso Del Pino, Nuria Llombart