The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 05, 2017
Filed:
Mar. 06, 2015
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Mohammad S. Sharawi, Dhahran, SA;
Rifaqat Hussain, Dhahran, SA;
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Abstract
The cognitive radio antenna assembly includes two boards, a main board that has an ultra-wideband antenna (UWB) and also serves as a ground plane for the reconfigurable antenna, and an elevated MIMO board having two planar inverted-F antennas (PIFAs) that are reconfigurable to selectively operate on different frequency bands. Each PIFA has a radiating patch having a slot bridged by PIN diodes and DC blocking capacitors on opposite sides of the slot. The resonant frequency of each PIFA is controlled by which diodes are switched on and off. The PIFA antennas are shorted to the ground plane the (UWB antenna) on the main board by shorting walls. The PIFA antennas are capable of resonating from the 700 MHz band through 3000 MHz, while the UWB senses the spectrum over the entire bandwidth. The antenna assembly is compact, being suitable for cellular phone and wireless applications in 4G wireless standards.