Patent US4199737A successfully refreshed from Google Patents.
US4199737A
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Magnetostatic wave device
Assignee: Westinghouse Electric Corp
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Filing: 1978-10-18
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Granted: 1980-04-22
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Expires: 1998-10-18
Abstract
Abstract A magnetostatic wave device for microwave signal processing which includes an input or output transducer finger arrangement which allows shaping of the device response. Two sets of interdigitated fingers are connected to receive the same microwave input signal which is power divided between the two sets. The fingers of one set are substantially parallel to, and in side-by-side relationship with, the fingers of the other set. The device may be used for delay lines, filters, signal correlation, oscillators and numerous other microwave signal processing arrangements.
Inventors
- 👤 Ralph W. Patterson
- 👤 Terence W. O'Keeffe
- 👤 John D. Adam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:48
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/19; H; H03; H03H; H03H2/00; H03H2/001
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
130 words
A magnetostatic wave device operable within a biasing magnetic field, comprising: (a) a magnetostatic wave supporting material; (b) first and second spaced apart microstrip coupling sections in operative relationship with said material; (c) each said section having at least one finger member in substantially parallel side-by-side relationship with the finger member of the other said section; (d) means for electrically connecting both said sections together so as to be electrically in parallel in a manner that if said device is operated as a launcher of magnetostatic waves by coupling to an input microwave signal the current in said side-by-side fingers will be in opposite directions and if said device is operated as a magnetostatic wave receiving currents will be induced in said side-by-side fingers, which currents are in opposite directions.
Claim 2
Dependent Claim
130 words
A magnetostatic wave device operable within a biasing magnetic field, comprising: (a) a magnetostatic wave supporting material; (b) first and second spaced apart microstrip coupling sections in operative relationship with said material; (c) each said section having at least one finger member in substantially parallel side-by-side relationship with the finger member of the other said section; (d) means for electrically connecting both said sections together so as to be electrically in parallel in a manner that if said device is operated as a launcher of magnetostatic waves by coupling to an input microwave signal the current in said side-by-side fingers will be in opposite directions and if said device is operated as a magnetostatic wave receiving currents will be induced in said side-by-side fingers, which currents are in opposite directions.
Claim 3
Dependent Claim
17 words
Apparatus according to claim 1 wherein: (a) each said coupling section includes a plurality of said fingers.
Claim 4
Dependent Claim
16 words
Apparatus according to claim 2 wherein: (a) all of said fingers are of the same length.
Claim 5
Dependent Claim
13 words
Apparatus according to claim 2 wherein: (a) said fingers are of various lengths.
Claim 6
Dependent Claim
13 words
Apparatus according to claim 2 wherein: (a) said fingers are of various widths.
Claim 7
Dependent Claim
14 words
Apparatus according to claim 2 wherein: (a) the distance between adjacent fingers is uniform.
Claim 8
Dependent Claim
14 words
Apparatus according to claim 2 wherein: (a) the distance between adjacent fingers is non-uniform.
Claim 9
Dependent Claim
16 words
Apparatus according to claim 1 wherein: (a) said coupling sections contact said magnetostatic wave supporting material.
Claim 10
Dependent Claim
18 words
Apparatus according to claim 1 wherein: (a) said coupling sections are displaced from said magnetostatic wave supporting material.
Claim 11
Dependent Claim
33 words
Apparatus according to claim 9 which includes: (a) a dielectric spacing member interposed between said coupling sections of said magnetostatic wave supporting material; and (b) said coupling sections contacting said dielectric spacing member.
Claim 12
Dependent Claim
60 words
Apparatus according to claim 1 wherein said device is a launcher of magnetostatic waves and wherein: (a) said means for electrically connecting both said coupling sections together includes a microstrip power divider section; and (b) said power divider section being coupled to a source of microwave signal and operable to equally divide an input microwave signal between said coupling sections.
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) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |