Accession Number:

AD0728639

Title:

Low Volume High Power Radiating Transmitter.

Descriptive Note:

Final technical rept.,

Corporate Author:

GENERAL ELECTRIC CO SYRACUSE N Y HEAVY MILITARY ELECTRONIC SYSTEMS

Report Date:

1971-07-01

Pagination or Media Count:

52.0

Abstract:

Conventional antenna arrays utilize element spacings of approximately one-half wavelength and are configured to minimize mutual coupling effects. The radiating impedance of conventional array elements is predominately the self-impedance of the element. In this program a distributed transmitter feeding a dense array of elements was developed and demonstrated at UHF. The transmitter consists of a total of two hundred fifty-six radiating elements within a one-square wavelength area. Each element is driven by a one-watt amplifier. In the densely packed array mutual coupling effects are used to advantage. The self-impedance of an isolated small element is impractical to drive. In the array environment the radiation resistance is increased through mutual effects to a magnitude suitable for efficient excitation from conventional solid-state amplifiers. This program demonstrated the feasibility of achieving 1 reasonable radiation impedance with small closely-spaced elements, and 2 efficient and coherent power addition in space of energy radiated from a large number of densely-spaced elements. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE