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H-slot truncated patch is designed to excite a circularly polarized short backfire antenna (SBA). The novel design of SBA contain H-shaped slot with truncated patch fed by single feed probe. It also consists of parasitic circular ring at the height of sub-reflector. It is demonstrated that H-shaped slot truncated patch can achieve a voltage standing wave ratio (VSWR) bandwidth of 4.0% (VSWR <;...
The broadband rectangular microstrip antennas are realized by using multi-resonator gap-coupled and stacked configurations. However they increase the size of the configuration in either vertical or horizontal directions. By cutting the resonant slots inside the patch the bandwidth is increased without increasing the total patch size. By using the different feed technique like L-probe feed the bandwidth...
In the present communication a new method for calculation of various parameters of an annular ring antenna is proposed using extended cavity model. The model is easier and intuitive than the full wave analysis. The properties of return loss, radiation pattern and quality factor of ring antenna are calculated and compared with the simulated results of the existing model.
A broad-band dual-polarization patch antenna fed by L-shaped probes at the patch corners is presented. A coupled line directional coupler mounted at the back of the ground plane is used to enhance the isolation between the L-probes to a large extent. Through using the coupler to feed the L-probes, the isolation between the input ports is 34 dB over the GSM900 operating bandwidth, which has enhanced...
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