Enhancement Of Wider Impedance Bandwidth Monopole Cpw-Fed Pentagonal Patch Antenna With Slits For SRR Applications
DOI:
https://doi.org/10.63665/10.63665/IJMEC.1103.03Keywords:
Pentagonal patch antenna, Short Range Radar applications, Co-planar Waveguide, Slot-loading technique, S11 parameters, Gain characteristics, Radiation patterns, Surface current distributionsAbstract
This paper presents the design of a monopole CPW-fed pentagonal patch antenna with slits for Short Range Radar (SRR) applications. The proposed antenna is implemented on an FR4 substrate with dimensions of 28 × 23 ×
1.6 mm³ and utilizes a Co-planar Waveguide (CPW) feeding technique. The antenna is optimized through a stepwise geometric evolution process using slot-loading technique which resonates at 9.73 GHz with reflection coefficients of –38.05 dB. It operates over a frequency band of 8.85–11.69 GHz producing a bandwidth of 2.84 GHz. The observed peak gain is
3.6 dBi. This paper presents the analysis of S11 parameters, far-field radiation patterns, 3D gain characteristics, and surface current distributions at the resonant frequency. The structure was optimized for stable reflection coefficient, omnidirectional radiation, and compatibility with compact sensing systems.
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