Patent US5659889A successfully refreshed from Google Patents.
US5659889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio with antenna connector having high and low impedance points
Assignee: Laird Technologies Inc
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Filing: 1995-01-04
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Granted: 1997-08-19
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Expires: 2015-01-04
Abstract
Abstract A radio transceiver of the present invention includes a transmission line within a housing. The transmission line is comprised of a hollow center conductor and an outer conductor, both connected to a transceiver circuit. The transmission line is also connected to a low impedance connector which is coupled to the housing. A retractable 1/2 wave antenna having an integral matching section will be matched to a transceiver circuit when extended. When the antenna is retracted, the antenna is retracted within the center conductor and acts as a 1/4 wave antenna and will still be matched to the transceiver circuit.
Inventors
- 👤 Mark G. Cockson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:49
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/243; H01Q1/244; H04; H04B; H04B1/00; H04B1/38; H04B1/3827; H04B1/3833; Y; Y10; Y10S; Y10S439/00; Y10S439/916
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
153 words
An antenna connector for use with a radio having high and low impedance points comprising: a first conductor coupled to a ground forming an attachment point for the ground at said connector; a second conductor coupled to a first impedance point of said radio, said second conductor being hollow, said second conductor having a first diameter; and a third conductor coupled to a second impedance point of said radio, said third conductor being hollow, said third conductor having a second diameter, said second diameter being smaller than said first diameter, said third conductor and said second conductor being disposed proximate each other in a co-axial relationship wherein an external center conductor may be coupled to either of said second or third conductors depending on the diameter of said external center conductor, said second and third conductors being arranged such that a retractable antenna may be slidably received through said second and third connectors.
Claim 2
Dependent Claim
153 words
An antenna connector for use with a radio having high and low impedance points comprising: a first conductor coupled to a ground forming an attachment point for the ground at said connector; a second conductor coupled to a first impedance point of said radio, said second conductor being hollow, said second conductor having a first diameter; and a third conductor coupled to a second impedance point of said radio, said third conductor being hollow, said third conductor having a second diameter, said second diameter being smaller than said first diameter, said third conductor and said second conductor being disposed proximate each other in a co-axial relationship wherein an external center conductor may be coupled to either of said second or third conductors depending on the diameter of said external center conductor, said second and third conductors being arranged such that a retractable antenna may be slidably received through said second and third connectors.
Claim 3
Dependent Claim
45 words
The antenna connector of claim 1 further comprising an external coaxial adapter coupled to said connector, said coaxial adapter having a ground coupled to said first conductor, said coaxial adapter having a center conductor coupled to said second or third conductor of said antenna connector.
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) | 2000-08-18 | 2001-02-17 | 2001-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-18 | 2005-02-17 | 2005-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-18 | 2009-02-17 | 2009-08-19 | $7700.00 | Window Closed / Lapsed |