MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202611107106 A) filed by Meena Kumari; Manish Kumar Vishnoi; Dr. S. B. Batra; and Dr. V. K. Singh on September 06, 2026, for Flexible Circular Slot And Rectangular Notch Loaded Microstrip Antenna.
Inventors include Manish Kumar Vishnoi; Dr. S. B. Batra; Dr. V. K. Singh; Pawan Kumar Saini; Dr. Aakansha Garg; Kundan Singh Rautela; and Neeraj Kumar.
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: The present invention relates to a flexible microstrip antenna for broadband and multiband wireless communication applications. The antenna comprises a flexible jeans or cotton-based textile substrate supporting a circular conductive radiating patch, a circular slot formed within the radiating patch, a rectangular notch, a microstrip feed line and a partial or modified ground plane. The circular slot and rectangular notch modify the effective current path and surface-current distribution of the radiating structure, while the modified ground configuration contributes to the impedance characteristics and bandwidth enhancement. In the demonstrated configuration, the antenna provides an operating frequency range of approximately 2.39 GHz to 25 GHz with a fractional impedance bandwidth of approximately 165.09%. The antenna exhibits resonant responses at approximately 2.6 GHz, 3.34 GHz, 6.904 GHz, 14.018 GHz and 18.72 GHz, with a maximum surface-current density of approximately 92.7 A/m at 2.6 GHz, maximum directivity of approximately 5 dBi at 18.72 GHz, and broadband gain of approximately 4.39 dBi. The flexible textile construction permits the antenna to conform to curved surfaces and supports its use in wearable, portable and conformal wireless communication systems. The antenna is suitable for applications covering portions of WLAN, C-band, X-band, Ku-band and K-band frequency regions.
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