A METHOD AND DESIGN OF MULTIBAND REJECTION MICROSTRIP PATCH ANTENNA FOR WIRELESS COMMUNICATIONS

A METHOD AND DESIGN OF MULTIBAND REJECTION MICROSTRIP PATCH ANTENNA FOR WIRELESS COMMUNICATIONS A Metallic Device that can radiate and receiving Radio waves is an Antenna. The Microstrip Patch Antenna is used in the Wireless Communications due to its versatility in resonant frequency, radiation pattern, polarization, impedance, and Smaller Size, Less Cost, and Less Weight with easy fabrication. The present invention disclosed herein is a Method and Design of Multiband Rejection Microstrip Patch Antenna for Wireless Communications comprising of Rectangular Patch (301), Circular Slot Etched (302); Microstrip Feed Line (303), H-Slot (304), and U-Slot (305). The present invention disclosed herein is design of an antenna which is operating over the wide frequency range of 3-16 GHz with multiband rejection capability, can attain using slotting technique where Slot shapes H and U were carved on the radiating patch and the feed line to achieve the band rejections respectively at 6GHz, 7.9-8.7GHz, and 12.5 14.6 GHz. The Circular Slot with half radius was etched over the corners of the Rectangular Patch. The Omni Directional Antenna was fed with 50 ohms feed line with RT duroid as the base and Radiating Surface, ground with perfect Electric Conductors. The miniaturization was achieved with perfect Gain, maximum return loss around 33.7dB, minimum return loss around -10dB over the pass band regions with maximum gain of 4.1572 dB. The invention disclosed herein uses ANSYS HFSS Simulation Software to design Multiband Rejection Microstrip Patch Antenna for Wireless Communications. RLCOMPARISION mtth hand u sot2 0.00 C- ______ -dB(S(1,l)) Setu 1 w ep -5.00 - dB(S(l,l))_l =.10.00 dBSl:) -:::15.00 -'20.00 '0-25.00 -30.00 -.350h o 4.00 6.00 8.00 10.00 12.00 14.00 Freq [GHz] Figure 5: TBand Rejections incident power Wth hadus10t2 jk ,A...75-.--2g 1&1.25 r-1.00 -o0.75 u0.50 0.0$.00 7.00 12.00 17.00 Freq [GHz] Figure 6: incident Power. radiated power Ath h ad slot2 0.75- W. Z0.63 dThOe .00~f 7.00 12:00 17.00 Freq [GHz] Figure 7: Radiating Power.