Low Volume High Power Radiating Transmitter.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1971
- Accession Number
- AD0728639
Entities
People
- George F. Farrell Jr.
- Gordon F. Stuart
Organizations
- General Electric