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US3588741A Expired / Lapsed US ⏱️ 0.0 years remaining

Microstrip semiconductor mount with composite ground plane

Assignee: AT&T Inc
•
Filing: 1969-04-01
•
Granted: 1971-06-28
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Expires: 1989-04-01
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Abstract

Abstract THE PRESENT INVENTION IS A NEW FORM OF MICROSTRIP MOUNT FOR TWO-TERMINAL SEMICONDUCTOR DEVICES. ITS ELEMENTS INCLUDE FIRST: A LARGE RADIAL CAPACITOR WHICH ACTS AS A DC CONNECTOR AND AN RF DECOUPLER BETWEEN A DC, BIAS SOURCE AND ONE SUCH DEVICE, AND ALSO ACTS AS A COMPOSITE GROUND PLANE FOR THE RF SIGNAL GENERATED IN THE DEVICE, AND SECOND, AN ADJUSTABLE CONDUCTIVE BRIDGE WHICH PROVIDES A DC PATH TO ONE OF THE DEVICE TERMINALS FROM ONE SIDE OF THE RADIAL CAPACITOR AND THROUGH THE CAPACITOR FORMS A CAVITY WHICH RESONATES AT THE DESIRED FREQUENCY WITH THE REACTANCE OF THE DEVICE. IN ONE ILLUSTRATIVE APPLICATION, THE INVENTION IS USED IN THE CONSTRUCTION OF A MICROWAVE IMPATT OSCILLATOR HAVING AN EXTREMELY LOW Q AND CONSEQUENTLY A VERY HIGH LOCKING FIGURE OF MERIT.

Inventors

  • 👤 Bernard Glance

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 11:55
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/147; H10; H10D; H10D99/00; H10N; H10N80/00

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1974-06-27 1974-12-27 1975-06-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-06-27 1978-12-27 1979-06-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-06-27 1982-12-27 1983-06-28 $7700.00 Window Closed / Lapsed

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