An asymmetrically-scaled-rotated microstrip antenna for conical-beam radiation

Abstract

An asymmetric-scaled-rotated single feed microstrip patch antenna is proposed for conical beam radiation. The antenna consists of four asymmetrically scaled rotated patch excited by single coaxial feed. Empirical design equations are derived for the proposed structure. The measured −10 dB reflection coefficient is 290 MHz (3.80 GHz–4.09 GHz). Simulated and measured performances of the proposed antenna are compared and a good agreement is observed between the two and matched with the predicted resonant frequency.