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Circularly polarized microstrip antenna realized by cutting unequal arm length U-slot is discussed. In 2.3 GHz frequency band, it gives VSWR and axial ratio bandwidth of 9 and 4%, respectively. In the reported work, a detailed explanation about the working of circular polarized antenna in terms patch resonant modes and the equations/design procedure to realize similar antennas at different frequency...
A novel design of rectangular Microstrip patch antenna backed by C shaped defected ground plane (DGP) is presented. First, effect of adding a slot in ground plane on fundamental mode is studied. A parametric analysis is performed by varying the slot width and changes in current distribution is observed. From this observation, approximate equations to calculate the resonant length of C shaped slot...
Analysis of proximity fed circularly polarized square patch antenna with multiple triangular notches is presented. The triangular notch tunes the spacing between TM10 and TM01 modes to yield circular polarization. Further a design of single triangular notch cut square patch antenna is also proposed which gives similar axial ratio bandwidth. The resonant length formulation at modified TM01 and TM10...
The notch cut circular microstrip antenna to realize circular polarization on thinner substrate is proposed. The notch degenerates fundamental TM11 mode into two orthogonal modes, to yield circular polarization. To improve upon the gain and bandwidth, its three layer suspended configuration is proposed. It yields VSWR and axial ratio BW of 60 and 15 MHz, respectively with gain of more than 5 dBi over...
The dual band microstrip antenna is realized by placing open circuit stub on the edges of the patch. When the stub length is taken to be nearly quarter wave in length, it offers capacitive and inductive impedance around the resonance frequency of the patch and realizes dual frequency response. In this paper, a detail analysis for the effect of stub on the dual band response of rectangular microstrip...
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