US4080603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmitting and receiving loop antenna with reactive loading
Assignee: Individual
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Filing: 1976-07-12
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Granted: 1978-03-21
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Expires: 1996-07-12
Abstract
Abstract The disclosure relates to an antenna system for C.B. radio use which is mounted upon a metallic base, such as the roof of an automobile, the antenna having the S-shape or Greek-key design configuration, the antenna being mounted at one end of the base through an insulating medium, the one end being coupled to a plate on the insulating medium which forms a capacitor with the insulating medium and the metallic base of fixed predetermined value. A variable capacitor is also formed between end extension of the plate and the free end of the antenna.
Inventors
- 👤 Howard Belmont Moody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:47
CPC Classifications
H; H01; H01Q; H01Q7/00; H01Q1/00; H01Q1/27; H01Q1/32; H01Q1/325; H01Q1/3275; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/26; H01Q9/265
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
An antenna system which comprises: a. an electrically conductive base surface, and b. an antenna mounted on said base surface, including: c. an electrically insulating layer disposed on said base surface, d. an electrically conductive plate positioned on said insulating layer remote from said base surface to form a capacitor therewith, said antenna being coupled at one end to said plate, e. said antenna having a plurality of S-shaped regions disposed about its continuous perimeter, and f. means coupled to said base for providing a variable capacitance between said antenna and said base surface.
Claim 2
Dependent Claim
94 words
An antenna system which comprises: a. an electrically conductive base surface, and b. an antenna mounted on said base surface, including: c. an electrically insulating layer disposed on said base surface, d. an electrically conductive plate positioned on said insulating layer remote from said base surface to form a capacitor therewith, said antenna being coupled at one end to said plate, e. said antenna having a plurality of S-shaped regions disposed about its continuous perimeter, and f. means coupled to said base for providing a variable capacitance between said antenna and said base surface.
Claim 3
Dependent Claim
19 words
A system as set forth in claim 1, wherein said base surface is the exterior surface of an automobile.
Claim 4
Dependent Claim
17 words
A system as set forth in claim 2, wherein the perimeter of said antenna is substantially circular.
Claim 5
Dependent Claim
67 words
A system as set forth in claim 1, wherein said means coupled to said base includes said base surface, electrically insulating means having apertures therein positioned on said base surface, electrically conductive means coupled to said one end of said antenna and having apertures alinable with said apertures of said electrically insulating means, said electrically insulating means and electrically conductive means being rotatable relative to each other.
Claim 6
Dependent Claim
67 words
A system as set forth in claim 2 wherein said means coupled to said base includes said base surface, electrically insulating means having apertures therein positioned on said base surface, electrically conductive means coupled to said one end of said antenna and having apertures alinable with said apertures of said electrically insulating means, said electrically insulating means and electrically conductive means being rotatable relative to each other.
Claim 7
Dependent Claim
67 words
A system as set forth in claim 3, wherein said means coupled to said base includes said base surface, electrically insulating means having apertures therein positioned on said base surface, electrically conductive means coupled to said one end of said antenna and having apertures alinable with said apertures of said electrically insulating means, said electrically insulating means and electrically conductive means being rotatable relative to each other.
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) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |