US4654600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase detector
Assignee: Tektronix Inc
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Filing: 1985-08-30
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Granted: 1987-03-31
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Expires: 2005-08-30
Abstract
Abstract A phase detector uses the junction of a coplanar waveguide and a slot line. The coplanar waveguide serves as an input terminal and is contiguous to the slot line which is shorted. A strobe pulse is applied to the shorted slot line via a snap-off diode, and an input signal is passed via sampling diodes and capacitors to a common mode output.
Inventors
- 👤 Larry R. Lockwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:21
CPC Classifications
G; G01; G01R; G01R25/00; G01R25/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
61 words
A phase detector comprising: an input coplanar waveguide; a shorted slot line joining said input coplanar waveguide; means for generating a strobe pulse, said strobe pulse being applied to said phase detector via said shorted slot line such that a sample of an input signal introduced at said input coplanar waveguide is output from said phase detector during said strobe pulse.
Claim 2
Dependent Claim
61 words
A phase detector comprising: an input coplanar waveguide; a shorted slot line joining said input coplanar waveguide; means for generating a strobe pulse, said strobe pulse being applied to said phase detector via said shorted slot line such that a sample of an input signal introduced at said input coplanar waveguide is output from said phase detector during said strobe pulse.
Claim 3
Dependent Claim
29 words
A phase detector as recited in claim 1 wherein said generating means comprises a snap-off diode connected to said shorted slot line to which a strobe signal is applied.
Claim 4
Dependent Claim
55 words
A phase detector as recited in claim 1 further comprising: a pair of sampling diodes connected to said input signal, said shorted slot line acting as a balun to provide a balanced pulse drive for said diodes; and a capacitor connected to the output of each of said diodes to provide a common mode output.
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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |