Claims
- 1. An electromagnetic compatibility test antenna array comprising a shaped element antenna including a first set of opposed triangular shaped and substantially planar antenna elements projecting in substantially opposite directions and having respective apexes connected to respective ones of elongated conductor means, a second set of opposed rectangular shaped antenna elements connected only to respective ones of said opposed shaped antenna elements of said first set at distal end base members thereof, respectively, and extending in planes substantially normal to a substantially common plane of said antenna elements of said first set;
- a log periodic dipole antenna array connected to said first set of antenna elements, respectively, via said respective conductor means; and
- said rectangular shaped elements and said triangular shaped elements are each characterized by wire or tube struts defining an outline of said rectangular shaped elements and said triangular shaped elements, respectively, at least one of said triangular shaped elements and said rectangular shaped elements include intermediate strut members extending between the strut members which define said outline, and said antenna array exhibits an antenna factor of less than 10 decibels in a signal receive or transmit operating mode for electromagnetic radiation signals having a frequency of between about 25 megahertz and 160 megahertz.
- 2. An electromagnetic compatibility test antenna characterized by:
- spaced apart elongated electrically conductive boom members;
- a shaped element antenna connected to said boom members comprising a first set of opposed triangular shaped substantially planar antenna elements extending substantially only within a common plane and having respective apexes connected to respective ones of said members and having base members disposed spaced from said boom members;
- a second set of antenna elements connected only to said base members of said triangular shaped elements, respectively, and extending in planes substantially normal to a substantially common plane in which said triangular shaped elements are disposed, said first set of elements and said second set of elements comprising wire or tube triangular outlines and wire or tube rectangular outlines, respectively; and
- a log periodic antenna array comprising plural opposed wire dipole antenna members connected to said boom members, respectively, at points spaced from said triangular shaped antenna elements whereby said antenna is operable to exhibit an antenna factor of less than about 10 decibels for a signal receive or transmit frequency range of about 25 megahertz to 160 megahertz.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of U.S. patent application Ser. No. 08/699,469, filed Aug. 19, 1996.
US Referenced Citations (14)
Non-Patent Literature Citations (1)
Entry |
Balanis, Constantine A., Antenna Theory Analysis and Design, Chapter 8 "Broadbband Dipoles and Matching Techniques," New York: John Wiley & Sons, Inc., 1982, pp. 340-347. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
699469 |
Aug 1996 |
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