Authors - Megha Potdar Abstract - This paper delineates a compact microstrip patch antenna that operates within the frequency range of 6.5 to 8.5 THz and exhibits a resonance frequency of 7.344 THz. The antenna maintains a flat, compact shape that is well-suited for terahertz circuit integration and also incorporates circular and U-shaped patch modifications that enhance radiation efficiency, gain, and band-width. According to the simulation results, the device has a gain of 7.042 dBi, a VSWR of 1.1329, a low return loss of –24.109 dB, and a wide impedance bandwidth of 1.119 THz. It demonstrates consistent radiation patterns and effective impedance matching across the operating frequency range, indicating that the proposed design outperforms conventional THz patch antennas and rep-resents a highly efficient solution for high-speed terahertz communication, im-aging, and sensing applications.
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