Communications: radio wave antennas – Antennas – High frequency type loops
Reexamination Certificate
2001-03-30
2001-12-25
Phan, Tho (Department: 2821)
Communications: radio wave antennas
Antennas
High frequency type loops
C343S742000, C343S867000
Reexamination Certificate
active
06333717
ABSTRACT:
FIELD OF THE INVENTION
This invention concerns the means of supporting loop antennas. This is the U.S. version of Canadian patent application 2,331,347.
SUMMARY OF THE INVENTION
Previous disclosures have shown that it is practicable and desirable to support loop antennas with conductors connected directly across the loops from a balanced feed point to the opposite side of the loops. This is more desirable than supporting such loops with long insulators that can be broken more easily by bad weather. This disclosure shows that it also is possible to support such loops with conductors that are placed in the plane that is perpendicular to the plane of the loops. Particularly, it is convenient to have such supporting conductors mounted diagonally with respect to the plane of the loops. Hereinafter in this description and the attached claims, such conductors will be called diagonal supporting conductors. In some cases, such supports may be less heavy and less expensive than the combination of the supports directly across the loops plus the usual supporting boom. In other cases, it is a considerable advantage that such diagonal supporting conductors can reduce the motion of the loops in the wind and, thereby, preserve the proper electrical operation of the antenna in the wind.
REFERENCES:
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patent: 4152708 (1979-05-01), Boucher
patent: 4229742 (1980-10-01), Rotunda
patent: 4236160 (1980-11-01), Johnson
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patent: 4595928 (1986-06-01), Wingard
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patent: 6020857 (2000-02-01), Podger
patent: 6104353 (2000-08-01), Diamond et al.
Dodd, Peter, “Design of An All-Metal Quad,”The Antenna Experimenter's Guide, 2nd Ed. (Potters Bar, Hertfordshire: Radio Society of Great Britain, 1996), pp. 98-99.
Podger, J. S., Analysis Results, Two Meter Quad, No Date.
Podger, J. S., Analysis Results, Two Meter Strengthened Quad, No. Date.
Podger, J. S., Analysis Results, Two Meter Quad Strengthened By Diagonal Conductors, No. Date.
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