Communications: radio wave antennas – Antennas – Spiral or helical type
Patent
1996-10-21
1999-02-23
Wong, Don
Communications: radio wave antennas
Antennas
Spiral or helical type
343844, H01Q 136
Patent
active
058749276
ABSTRACT:
A tilted helical element antenna array has increased effective aperture. By tilting individual helical radiators relative to one another, the region of aperture overlap may be decreased to thereby increase the effective aperture of the array. Helical radiators are disposed at a radiator spacing which is less than the operating wavelength .lambda.. At such a small spacing, the apertures of each of the helical radiators overlap. To decrease this aperture overlap region and thereby increase the effective aperture of the array, each of the helical radiators are tilted relative to one another. Thus, a compact antenna having an increased effective aperture is provided.
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Richard C. Johnson Antenna Engineering Handbook, Third Edition, Chapter 13, entitled "Helical Antennas" by Howard E. King and Jimmy L. Wong.
Knowles Patrick J.
Waterman Timothy G.
Ho Tan
Wong Don
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