Accession Number : ADA255176


Title :   Computer Modeling of Tactical High Frequency Antennas


Descriptive Note : Master's thesis


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Gregory, Jr, Bobby G


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a255176.pdf


Report Date : Jun 1992


Pagination or Media Count : 111


Abstract : The purpose of this thesis was to compare the performance of three tactical high frequency antennas to be used as possible replacement for the Tactical Data Communications Central (TDCC) antennas. The antennas were modeled using the Numerical Electromagnetics Code, Version 3 (NEC3), and the Eyring Low Profile and Buried Antenna Modeling Program (PAT7) for several different frequencies and ground conditions. The performance was evaluated by comparing gain at the desired takeoff angles, the voltage standing wave ratio of each antenna, and its omni-directional capability. The buried antenna models, the ELPA-302 and horizontal dipole, were most effective when employed over poor ground conditions. The best performance under all conditions tested was demonstrated by the HT-20T. Each of these antennas have tactical advantages and disadvantages and can optimize communications under certain conditions. The selection of the best antenna situation dependent. An experimental test of these models is recommended to verify the modeling results NEC-3, PAT7, HT-20T, ELPA- 302, Horizontal Dipole.


Descriptors :   *COMPUTERIZED SIMULATION , *BURIED OBJECTS , *DIPOLE ANTENNAS , *COMMUNICATIONS CENTRALS , TEST AND EVALUATION , FREQUENCY , ANGLES , RATIOS , HIGH FREQUENCY , MODELS , SELECTION , STANDING WAVE RATIOS , STANDING WAVES , DIRECTIONAL , THESES , PROFILES , GAIN , ANTENNAS , DIPOLES , TAKEOFF , REPLACEMENT


Subject Categories : Electrical and Electronic Equipment
      Computer Programming and Software
      Radiofrequency Wave Propagation
      Radio Communications


Distribution Statement : APPROVED FOR PUBLIC RELEASE