The Bowtie Antenna with Concentric Circular slot for Triple Band Applications

The bowtie antenna patch with concentric circular slot for triple band applications. The circular slots are introduced at bowtie antenna to improve the impedance bandwidth, high gain. The proposed antenna operate at three different frequencies are 8.3 GHz, 11.8 GHz and 14.5 GHz with 10 dB return losses are -24.48 dB, -35.50 dB and - 21.90 dB. The co polarization and cross polarization (XP) are observed and XP are found at is 0°, -15 dB(co pol) and - 33 dB (cross pol) at 8.3 GHz. The radiation patterns are observed at is 0° and is 90° in xz and yz plane for three resonance bands. The co and cross polarization has presented and cross polarization is found below 20 dB at one plane of each angle and operating frequency. The simulation results measured results have good agreement.