Broadband HF and VHF antenna design with terrain modeling
Kline, Theodore S.
Smith, Rasler W.
MetadataShow full item record
The objective of this thesis was the design and analysis of broadband antennas to be used with sounders for trans-equatoria! propagation research. Sites have been identified in Oahu and Rarotonga. A four step process is used in the design of the antennas. The four steps are: theoretical design, preliminary analysis with ELNEC software, detailed analysis with NECA software and finally terrain modeling with PAINT, MN and TA software. Preliminary work led to the decision to use two antennas at each site. On Oahu a HF log-periodic antenna is used for the 2-25 MHz band and a VHF log-periodic antenna is used for the 25-60 MHz band. On Rarotonga a VHF log-periodic antenna is also used for the 25-60 MHz band, however a sloping V antenna is used for the 2-25 MHz band. Computer generated impedance values and radiation patterns are presented.
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.
Showing items related by title, author, creator and subject.
Lambrakakis, Georgios D. (Monterey, California: Naval Postgraduate School, 1990-06);This thesis investigates a new mm-wave Bilateral Slot Line (BSL) antenna and its relation to the Linearly Tapered Slot Antenna (LTSA). The BSL antenna consists of a tapered double-sided slotline and can be viewed as two ...
Adamiak, David V. (Monterey, California. Naval Postgraduate School, 1999-12-01);Impulse antennas are specifically designed to transmit and/or receive very short bursts of electromagnetic energy. By their very nature, these short time-duration bursts (impulses) require ultra-wideband transmitting and ...
Harris, Andrew Durham; Myers, Glen A. (Monterey, California. Naval Postgraduate School, 1968-09); NPS-52MV8091AThe report considers the application of a negative impedance converter to a short monopole antenna. The theory of short antennas and an analysis of the negative impedance converter are presented. The frequency- response ...