Abstract
AbstractCompact variation of A-shape microstrip antenna is discussed. To enhance the bandwidth of this compact design, its various gap-coupled multi-resonator variations using compact MSAs like M-shape, N-shape, W-shape, U-shape, and their variations are proposed. The wideband response is attributed to the gap-coupling between fundamental resonant modes among various patches. The gap-coupled variation of A-shape patch with respective M-shape, N-shape, W-shape, and U-shape patches yields wideband response. Here in terms of pattern purity and bandwidth, gap-coupled design of A-shape with M-shape and W-shape patch individually yields optimum response. The gap-coupled variation of A-shape with a combination of M and N-shape patch yields a dual-band CP response. The proposed multi-resonator compact antennas are proposed on suspended FR4 substrate in 800–1200 MHz frequency range and thus will find applications in mobile communication systems in the said frequency band.KeywordsCompact microstrip antennaBroadband microstrip antennaA-shapeM-shapeN-shapeW-shapeU-shapeGap-coupled configuration
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