Investigation of a compensated rectangular microstrip antenna with negative capacitor and negative inductor for bandwidth enhancement


Kaya A., Yuksel E. Y.

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol.55, no.5, pp.1275-1282, 2007 (SCI-Expanded) identifier identifier

Abstract

New broadband impedance matching circuits used to increase the impedance bandwidth of the microstrip antennas for transmit applications are proposed and analyzed. A microstrip patch operating at 10.5 GHz having 12.2% bandwidth has been utilized as a reference antenna. The impedance bandwidth of the antenna has been enhanced by using negative capacitance and inductance compensation networks from 12.22% to 16.96% and 24.50%, respectively. In addition, it has been shown that the active compensation significantly improves the radiation pattern.