US4311972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed antenna coupler
Assignee: Boeing North American Inc
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Filing: 1980-01-21
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Granted: 1982-01-19
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Expires: 2000-01-21
Abstract
Abstract An antenna coupler samples the power transferred between the transmitter and the load, and at two equal distance points from the load. The coupler, based upon the value of the samples, connects a tuning stub to the transmission lines that ensures matched impedance conditions between the transmitter and the load.
Inventors
- 👤 Harvey L. Landt
- 👤 Donald J. Mooty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:59
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/38; H03H7/40
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
A high speed coupler for tuning a transmission line between a radio frequency source having an output impedance Z 0 and a radio frequency load, comprising: means for measuring the power transfer U 1 between a point located a distance θ, where θ is the distance in wavelength of the transmitted frequency, from the RF load; means for measuring the power transfer U 2 between a point located a distance of 2 θ from the RF load; and means for inserting a tuning stub having a length Ψ and located a distance φ from the RF load wherein Ψ and Φ are indicated by U 1 , U 2 , θ and Z 0 .
Claim 2
Dependent Claim
115 words
A high speed coupler for tuning a transmission line between a radio frequency source having an output impedance Z 0 and a radio frequency load, comprising: means for measuring the power transfer U 1 between a point located a distance θ, where θ is the distance in wavelength of the transmitted frequency, from the RF load; means for measuring the power transfer U 2 between a point located a distance of 2 θ from the RF load; and means for inserting a tuning stub having a length Ψ and located a distance φ from the RF load wherein Ψ and Φ are indicated by U 1 , U 2 , θ and Z 0 .
Claim 3
Dependent Claim
123 words
The high speed coupler according to claim 1 wherein the means for measuring U 1 and the means for measuring U 2 , comprises: means for measuring the voltage potential E r at the load; means for measuring the voltage potential E s1 at location θ; means for measuring the voltage potential E s2 at location 2 θ; means for obtaining the absolute value of E r , E s1 and E s2 ; means for squaring the absolute value of E r , E s1 and E s2 ; and means for dividing the absolute value of E r into E s1 to obtain, thereby, U 1 and means for dividing E r into E s2 to obtain, thereby, U 2 .
Claim 4
Dependent Claim
61 words
The high speed coupler according to claim 2 wherein the means for inserting a tuning stub having a length Ψ and located a distance φ from the RF load comprises: means for converting U 1 , U 2 , θ and Z 0 into a tuning stub having a length Ψ and located at a distance φ from the RF load.
Claim 5
Dependent Claim
109 words
A high speed method for tuning a transmission line between a radio frequency source having an output impedance Z 0 and a radio frequency load, comprising: measuring the power transfer U 1 between a point located a distance θ where θ is the distance in wavelength of the transmitted frequency from the RF load; measuring the power transfer U 2 between a point located a distance of 2 θ from the RF load; and inserting a tuning stub having a length Ψ and located a distance φ from the RF load wherein Ψ and Φ are indicated by U 1 , U 2 , θ and Z 0 .
Claim 6
Dependent Claim
109 words
A high speed method for tuning a transmission line between a radio frequency source having an output impedance Z 0 and a radio frequency load, comprising: measuring the power transfer U 1 between a point located a distance θ where θ is the distance in wavelength of the transmitted frequency from the RF load; measuring the power transfer U 2 between a point located a distance of 2 θ from the RF load; and inserting a tuning stub having a length Ψ and located a distance φ from the RF load wherein Ψ and Φ are indicated by U 1 , U 2 , θ and Z 0 .
Claim 7
Dependent Claim
113 words
The high speed method according to claim 4 wherein the step for measuring U 1 and the means for measuring U 2 , comprises: measuring the voltage potential E r at the load; measuring the voltage potential E s1 at location θ; measuring the voltage potential E s2 at location 2 θ; obtaining the absolute value of E r , E s1 and E s2 ; means for squaring the absolute value of E r , E s1 and E s2 ; and dividing the absolute value of E r into E s1 to obtain, thereby, U 1 and means for dividing E r into E s2 to obtain, thereby, U 2 .
Claim 8
Dependent Claim
59 words
The high speed method according to claim 2 wherein the step for inserting a tuning stub having a length Ψ and located a distance φ from the RF load comprises: converting U 1 , U 2 , θ and Z 0 into a tuning stub having a length Ψ and located at a distance φ from the RF load.
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) | 1985-01-18 | 1985-07-20 | 1986-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-18 | 1989-07-20 | 1990-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-18 | 1993-07-20 | 1994-01-19 | $7700.00 | Window Closed / Lapsed |