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A novel broadband omni-directional circular patch antenna is proposed to substitute for a broadband monopole antenna for its proverbial advantages. Considering the inherent narrow bandwidth of conventional microstrip patch antennas, electromagnetic coupling feed technology, shorting pins and matching network designed by means of genetic algorithm (GA) optimizers are used simultaneously to broaden...
A low-cost Ku-band array of microstrip antennas, which is fed by standard waveguide, is presented in this paper. The 72 corner-fed square patches of the array are arranged in a 6-by-12 configuration. A novel waveguide to microstrip line transition with power divider is employed as a centre fed for the array in order to reduce the loss of the microstrip feed line. The resonant frequency of the array...
High gain microstrip antenna using a shorted square wall in the center of the square patch has been reported. In this letter, we presented a modified structure for such a high gain design. Shorting at the center of the patch can be realized by placing number of shorting posts along the radiating edges of the patch, and a CPW-feed structure was used to excite the patch antenna through a slot. It is...
A novel dual-FET active patch antenna element for quasi-optical power combining arrays is described. The circuit uses two FETs which symmetrically load a split patch antenna. The push-pull operation of the devices decreases H-plane crosspolarisation dramatically. A power output of 47 mW was achieved at 8.1 GHz.<<ETX>>
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