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:
Jan. 28, 2020
Filed:
Mar. 28, 2018
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Rifaqat Hussain, Dhahran, SA;
Mohammad S Sharawi, Dhahran, SA;
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran, SA;
Abstract
A low profile, 4-element, slot-based, frequency reconfigurable MIMO antenna for cognitive radio (CR) platforms for cellular communication front ends. The antenna is on a board having a top layer substrate and a bottom layer ground plane. The bottom layer ground plane contains four antenna elements, each antenna element having a circular slot and an annular slot spaced outwardly from and extending circumferentially around the circular slot. The bottom layer contains a microstrip feed-line for each antenna element. Varactor diodes on the top layer span the width of each annular slot to tune the resonance frequency over a wide operation band. The antenna covers a wide frequency band from 1800 MHz to 2450 MHz and supports several well-known wireless standards bands, including GSM1800, LTE, UMTS and WLAN, as well as many others.