Accession Number : ADA190955

Title :   A Computer Model Investigation of a Half Square Log-Periodic Array.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Erdeviren, Mustafa

PDF Url : ADA190955

Report Date : Dec 1987

Pagination or Media Count : 168

Abstract : This thesis investigates the potential of a half square log-periodic array for use by the military over the frequency range of 2 to 30 MHz using a computer simulation technique by numerical methods. Using the Numerical Electromagnetics Code (NEC), a selected model was run in free space and over perfect ground to obtain data for radiation patterns and element currents on the array. After the evaluation of the NEC data, the results of the investigation show that half square log-periodic array with dual feed and switched transmission line has characteristics of a successful log-periodic structure with a unidirectional radiation pattern, over the design frequency range of 2 to 30 MHz, showing promise for military applications.

Descriptors :   *COMPUTERIZED SIMULATION, *LOG PERIODIC ANTENNAS, *NUMERICAL METHODS AND PROCEDURES, *RADIATION PATTERNS, *TRANSMISSION LINES, ARRAYS, CODING, COMPUTER APPLICATIONS, CURRENTS, ELECTROMAGNETIC FIELDS, FEEDING, FREQUENCY, MILITARY APPLICATIONS, NUMERICAL ANALYSIS, RECTANGULAR BODIES, SWITCHING, UNIDIRECTIONAL

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE