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dc.contributor.authorThiem, Keem B.
dc.contributor.authorJanaswamy, Ramakrishna
dc.date1993-03
dc.date.accessioned2013-02-27T23:23:52Z
dc.date.available2013-02-27T23:23:52Z
dc.date.issued1993-03
dc.identifier.urihttp://hdl.handle.net/10945/28839
dc.description.abstractFor a variety of mechanical and electrical reasons, the U.S. Army prefers to use a wire antenna for its mobile applications in the HF and VHF bands. However, due to the rapid fluctuation of impedance with frequency, a simple wire antenna is not suitable. This research will look into the aspects of electronic switching of the antenna length and electronic switching of the accompanying tuning network for frequency hopping applications. Two separate schemes will be studied. The first one involves a chosen wire antenna loaded with PIN diodes. The diodes will be selectively switched ON or OFF at different frequencies to control the input impedance of the antenna. In the second scheme, a monopole antenna of fixed length will be considered and data on its input impedance over many sub-bands within 30 to 90 MHz will be generated. Tuning networks composed of resistors, inductors and capacitors will be designed over each sub-band. The various networks will then be connected via PIN diodes and selectively switched to provide matching over a much wider band.en_US
dc.description.urihttp://archive.org/details/widebandingtechn00thie
dc.format.extentvi, 133 p.: ill. ; 28 cm.en_US
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.lcshANTENNASen_US
dc.titleWidebanding techniques for VHF antennas - IIen_US
dc.typeTechnical Reporten_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentElectrical and Computer Engineeringen_US
dc.identifier.oclca191835
dc.identifier.npsreportNPS-EC-93-007
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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