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- Title
Enhanced Axial Ratio Bandwidth and Circular Polarization Purity in Triple Band Hexagonal Shaped Antenna.
- Authors
Shinde, Pratap; Shinde, Jayashree; Gaikwad, Prajkta
- Abstract
The proposed hexagonal shaped antenna is designed to possess circularly polarized triple resonating band operation using a novel technique of paired open-ended slot embedded around antenna axis. The open-ended slots cut at and along either side of horizontal axis of the hexagonal radiating patch create meandered electrical path which allows the current circulation at the center of patch to degenerate the two orthogonal modes for circular polarization (CP) radiation. Hexagonal antenna fed with CPW feed give rise wide impedance bandwidth and wide axial ratio bandwidth. Circular polarization purity is achieved by optimizing the length of paired open-ended slots. A rectangular tunable notch embedded in the ground plane controls the impedance bandwidth by limiting its upper edge frequency. The proposed antenna possesses a wide impedance bandwidth of 68.4%, axial ratio bandwidth (ARBW) of 57.14% and peak gain of 4 dB. The proposed circularly polarized antenna holds triple circularly polarized bands resonating at 1.52 GHz, 1.73 GHz and 3.78 GHz with axial ratio bandwidth (ARBW) of 15 MHz, 15 MHz and 2720 MHz respectively, which is about 0.98%, 0.98% and 57.14% with respect to center resonating frequency. Antenna reports peak gain of 4 dB. The magnitude of axial ratio near to 0dB for all bands indicates purity in CP.
- Subjects
CIRCULAR polarization; COPLANAR waveguides; ANTENNAS (Electronics); BANDWIDTHS; ANTENNA feeds; ANTENNA design; NOTCH filters
- Publication
International Journal of Microwave & Optical Technology, 2024, Vol 19, Issue 1, p7
- ISSN
1553-0396
- Publication type
Article