Broadband Passive Two-Feed-Per-Beam Pillbox Architecture for High Beam Crossover Level - Université de Rennes Access content directly
Journal Articles IEEE Transactions on Antennas and Propagation Year : 2020

Broadband Passive Two-Feed-Per-Beam Pillbox Architecture for High Beam Crossover Level

Terry Bateman
  • Function : Author
  • PersonId : 1064359
Jim Francey
  • Function : Author
  • PersonId : 1064360

Abstract

Multi-beam antennas based on quasi-optical systems feeding a single radiating aperture generate orthogonal beams with a low crossover level between adjacent beams (around -13 dB at most). To circumvent this limitation, we present a circuit architecture allowing the excitation of a quasi-optical system (pillbox system) with two feeds per beam to reach much higher beam crossover levels. To this end, a specific eight-beam passive circuit is designed to cover the 76-86 GHz frequency band. It is based on a single-layer substrate integrated waveguide (SIW) coupler followed by equiphase SIW lines. The maximum phase and amplitude imbalance between the sources are only 35 the wavelength in the SIW lines at the design frequency) and 1.3 dB, respectively, and the isolation is better than -19 dB. The measured beam crossover level of the corresponding antenna is better than -3.2 dB, corresponding to an improvement of 16 dB with respect to single-feed-per-beam pillbox systems. The proposed passive architecture offers beam crossover levels suitable for low-cost electronically controlled multi-beam applications, as for next-generation 5G backhauling systems.
Fichier principal
Vignette du fichier
Potelon et al-2019-Broad-Band Passive Two-Feeds-Per-Beam Pillbox Architecture for High Beam.pdf (1.8 Mo) Télécharger le fichier
Origin Files produced by the author(s)
Loading...

Dates and versions

hal-02469489 , version 1 (20-03-2020)

Identifiers

Cite

Thomas Potelon, Mauro Ettorre, Terry Bateman, Jim Francey, Ronan Sauleau. Broadband Passive Two-Feed-Per-Beam Pillbox Architecture for High Beam Crossover Level. IEEE Transactions on Antennas and Propagation, 2020, 68 (1), pp.575-580. ⟨10.1109/TAP.2019.2934353⟩. ⟨hal-02469489⟩
81 View
272 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More