US4155091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact omnidirectional antenna array
Assignee: IEC Electronics Corp
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Filing: 1977-09-12
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Granted: 1979-05-15
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Expires: 1997-09-12
Abstract
Abstract An omnidirectional antenna array comprising a ferrite antenna inductively coupled to one leg of a loop antenna that lies in a plane parallel to the long axis of the ferrite antenna. The output signal may be taken from either of the antennas.
Inventors
- 👤 Gilbert C. Vorie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:10
CPC Classifications
H; H01; H01Q; H01Q7/00; H01Q21/00; H01Q21/29
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
52 words
An antenna array comprising an elongated ferrite antenna, a loop antenna, and means for mounting said antennas in closely spaced array asymmetrically relative to each other with the ferrite antenna crossing the loop at only a single location along it so that said loop antenna is inductively coupled to said ferrite antenna.
Claim 2
Dependent Claim
52 words
An antenna array comprising an elongated ferrite antenna, a loop antenna, and means for mounting said antennas in closely spaced array asymmetrically relative to each other with the ferrite antenna crossing the loop at only a single location along it so that said loop antenna is inductively coupled to said ferrite antenna.
Claim 3
Dependent Claim
24 words
An antenna array according to claim 1 wherein the gain of said loop antenna is approximately equal to the gain of said ferrite antenna.
Claim 4
Dependent Claim
65 words
An antenna array comprising an elongated ferrite antenna, a plurality of loop antennas, and means for mounting said loop antennas close to said ferrite antenna and asymmetically relative thereto with the core of the ferrite antenna crossing the loop antenna at only a single location along each of the loop antennas so that each of said loop antennas is inductively coupled to said ferrite antenna.
Claim 5
Dependent Claim
65 words
An antenna array comprising an elongated ferrite antenna, a plurality of loop antennas, and means for mounting said loop antennas close to said ferrite antenna and asymmetically relative thereto with the core of the ferrite antenna crossing the loop antenna at only a single location along each of the loop antennas so that each of said loop antennas is inductively coupled to said ferrite antenna.
Claim 6
Dependent Claim
61 words
An antenna array according to claim 3 including also tuning capacitors for tuning said ferrite antenna and each one of said loop antennas, the values of said tuning capacitors being selected to tune each of said loop antennas to a different frequency in a selected range of frequencies and to tune said ferrite antenna to a frequency within the selected range.
Claim 7
Dependent Claim
56 words
An antenna array comprising an elongated ferrite antenna and a loop antenna, means for mounting said antennas relative to each other with the ferrite antenna crossing the loop at only a single location along it so that there is inductive coupling between them, and means for taking an electrical output signal from one of said antennas.
Claim 8
Dependent Claim
56 words
An antenna array comprising an elongated ferrite antenna and a loop antenna, means for mounting said antennas relative to each other with the ferrite antenna crossing the loop at only a single location along it so that there is inductive coupling between them, and means for taking an electrical output signal from one of said antennas.
Claim 9
Dependent Claim
22 words
An antenna array according to claim 5 including tuning means for tuning both of said antennas to resonate at a preselected frequency.
Claim 10
Dependent Claim
25 words
An antenna array according to claim 5 wherein said ferrite antenna lies in a plane parallel and relatively close to the plane of the loop.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |