CST – Computer Simulation Technology

Broadband beam scanning circularly polarised leaky-wave antenna based on modified substrate integrated waveguide
C. Jin, M. Mujumdar, A. Alphones
Electronics Letters
Volume: 49, Issue: 5, 28 February 2013
316 - 318
broadband beam scanning, circularly polarised modified substrate
A high gain broadband beam scanning circularly-polarised (CP) leakywave antenna (LWA) is proposed based on a modified substrate integrated waveguide. The designed CP LWA has been fabricated and its performance measured. The reported antenna presents expected broadband matched impedance with a measured reflection coefficient |S11| < - 10 dB from 15.4 to 19 GHz. The radiation pattern was measured and the axial ratio of the antenna is within 3 dB from 15.9 to 17.2 GHz. The antenna exhibits continuous beam scanning from 35° at 15.5 GHz to 47° at 18 GHz according to the broadside with maximum gain of 12.3 dBi.

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