Patent US3697902A successfully refreshed from Google Patents.
US3697902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slotted microstrip line for impedance matching having two stops to prevent ohmic contact between the movable reactive element and the center strip
Assignee: Alcatel CIT SA
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Filing: 1971-04-14
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Granted: 1972-10-10
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Expires: 1991-04-14
Abstract
Abstract Reactor for cancelling the reactances of a circuit by adding to it a conjugate reactance, involving at least one trolley that can be moved along a microstrip and supporting a probe whose penetration can be adjusted by a screw. One of the ends of the microstrip is terminated by a plug specially adapted to receive a transistor electrode.
Inventors
- 👤 Guy Louvel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:36
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
155 words
A reactor for use in measuring impedances of active circuits comprising; a. a microstrip transmission line; b. first termination means coupled to said microstrip transmission line for receiving energy from a signal generator; c. second termination means coupled to said microstrip transmission line for transmitting energy to aCtive circuits; d. a box enclosing said microstrip transmission line; e. a variable reactance enclosed in said box and capable of cancelling the reactance of the active circuits, said reactor comprising; i. a probe arranged in operable relationship with said microstrip transmission line; ii. a screw means for adjusting the position of said probe relative to said microstrip; iii. two stops for contacting said probe with the bottom of said box, said stops being such as to exclude any ohmic contact with said microstrip; and iv. trolley means coupled to said probe and screw means to permit movement of said probe and screw means relative to said microstrip.
Claim 2
Dependent Claim
155 words
A reactor for use in measuring impedances of active circuits comprising; a. a microstrip transmission line; b. first termination means coupled to said microstrip transmission line for receiving energy from a signal generator; c. second termination means coupled to said microstrip transmission line for transmitting energy to aCtive circuits; d. a box enclosing said microstrip transmission line; e. a variable reactance enclosed in said box and capable of cancelling the reactance of the active circuits, said reactor comprising; i. a probe arranged in operable relationship with said microstrip transmission line; ii. a screw means for adjusting the position of said probe relative to said microstrip; iii. two stops for contacting said probe with the bottom of said box, said stops being such as to exclude any ohmic contact with said microstrip; and iv. trolley means coupled to said probe and screw means to permit movement of said probe and screw means relative to said microstrip.
Claim 3
Dependent Claim
51 words
The reactor of claim 1 wherein said box has a rectangular cross-section at least partially open at one of its faces, said trolley being U-shaped overlapping said partly open face, said microstrip being situated within said box so that it does not rest on any of the sides of said box.
Claim 4
Dependent Claim
19 words
The reactor according to claim 1, wherein said screw means includes a friction head for moving said screw means.
Claim 5
Dependent Claim
57 words
The reactor according to claim 1, further including a second variable including a second probe and screw means, said first and second screw means permitting independent adjustment of said first and second probes and second trolley means for moving said second probe and screw means, movement of said first and second trolleys being independent of each other.
Claim 6
Dependent Claim
40 words
The reactor according to claim 1, wherein said first termination means includes a coaxial connector and wherein said second termination means includes a central conductor for receiving a flat electrode of a transistor, said conductor being conducted to said microstrip.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |