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NCJ Number: 249345 Find in a Library
Title: Quad-Band Antenna for Public Safety Applications
Journal: IEEE Antennas and Wireless Propagation Letters  Volume:13  Dated:2014  Pages:1231-1234
Author(s): H. Mopidevi; Y. Damgaci; D. Rodrigo; L. Jofre; B.A. Cetiner
Date Published: 2014
Page Count: 4
Sponsoring Agency: National Institute of Justice (NIJ)
Washington, DC 20531
Grant Number: 2007-IJCX-K025, 2009-SQ-B9-K005
Document: HTML
Type: Program/Project Description; Report (Grant Sponsored); Report (Technical)
Format: Article; Document (Online)
Language: English
Country: United States of America
Annotation: This article describes the design, fabrication, and characterization of a frequency-reconfigurable antenna for the United States Public Safety (PS) wireless communication applications.
Abstract: This antenna is quad-band operating in the PS bands-220, 470, 800, and 4960 MHz. It is an electrically small antenna with calculated ka ~ 0.55 at 220 MHz. The antenna has two reconfigurable modes of operations. In mode 1, 220-, 470-, and 4960-MHz bands are excited. Mode 2 provides operation over 800- and 4960-MHz bands. This dynamic frequency reconfiguration is accomplished by two radio frequency microelectromechanical systems switches strategically located within the antenna architecture. The measured and simulated results for impedance and radiation characteristics agree well, where ~ 3 percent and 17 percent fractional bandwidths have been measured in the four bands, respectively, while maintaining integrity of radiation pattern. (Publisher abstract modified)
Main Term(s): Technology transfer
Index Term(s): Antennas; NIJ grant-related documents; NIJ Resources; Police equipment; Police telecommunications systems; Specifications
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