Performance Analysis of a 22 GHz Microstrip Patch Antenna for High-Frequency Wireless Systems
DOI:
https://doi.org/10.22399/ijcesen.1775Abstract
The increasing need for high-frequency wireless applications, including satellite communications and radar systems, drives the demand for compact, high-performance antennas with efficient impedance matching, high gain, and stable radiation characteristics. However, traditional microstrip patch antennas often exhibit limitations such as poor impedance matching, polarization sensitivity, and undesirable side lobes, especially in the millimeter-wave spectrum.
This study presents the design and evaluation of a microstrip patch antenna optimized for approximately 22 GHz, incorporating structural and material enhancements to improve performance. The antenna’s characteristics are analyzed in terms of Voltage Standing Wave Ratio (VSWR), gain, and S-parameters. The results show effective impedance matching within the 20.2–21.6 GHz range, achieving a minimum VSWR of 1.2034 at 21.4533 GHz. However, at 22.12 GHz, the VSWR rises to 4.5094, indicating impedance mismatch. To address this, modifications such as substrate optimization and impedance tuning are considered. Gain analysis demonstrates strong directional performance, with a peak gain of 5.5291 dB at 21.57 GHz. Moreover, S-parameter analysis confirms efficient impedance matching at 21.1733 GHz, with a reflection coefficient of -22.0036 dB, ensuring minimal signal loss.
The findings indicate that the proposed antenna is well-suited for high-frequency applications. However, additional refinements are required to enhance impedance matching at 22 GHz, reduce side lobes, and improve efficiency. Future research will focus on optimizing the substrate, refining the feed network, and implementing structural modifications to achieve superior broadband performance.
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