US4758775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broad band coupler
Assignee: Eip Microwave Inc
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Filing: 1987-04-10
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Granted: 1988-07-19
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Expires: 2007-04-10
Abstract
Abstract The present invention relates to microwave measurement systems and more particularly to a microwave network analyzer having a measurement head connectable between a source of radio frequency energy and a device under test which head is capable of operating over an extended band of radio frequency energy.
Inventors
- 👤 Mark D. Roos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:27
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02; G01R27/04; G01R27/06; H; H01; H01P; H01P5/00; H01P5/12; H01P5/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
170 words
In a microwave measurement system for applying broad band radio frequency energy to a device under test and receiving signal information from the device under test an energy coupler comprising: a radio frequency energy transmission means for coupling between a source of radio frequency and a device under test to transmit said radio frequency energy to said device under test and receive energy reflections from an device under test over said entire frequency band; a first coupler means coupled to said transmission means for sampling transmitted and reflected radio frequency energy, said first coupler means having a first frequency band pass over a first predetermined portion, less than the whole, of the frequency band of said source; and a second coupler means coupled to said transmission means for sampling transmitted and reflected radio frequency energy, said second coupler means having a second frequency band pass over a second predetermined portion, less than the whole, of the frequency band of said source, said first and second frequency band passes being different.
Claim 2
Dependent Claim
170 words
In a microwave measurement system for applying broad band radio frequency energy to a device under test and receiving signal information from the device under test an energy coupler comprising: a radio frequency energy transmission means for coupling between a source of radio frequency and a device under test to transmit said radio frequency energy to said device under test and receive energy reflections from an device under test over said entire frequency band; a first coupler means coupled to said transmission means for sampling transmitted and reflected radio frequency energy, said first coupler means having a first frequency band pass over a first predetermined portion, less than the whole, of the frequency band of said source; and a second coupler means coupled to said transmission means for sampling transmitted and reflected radio frequency energy, said second coupler means having a second frequency band pass over a second predetermined portion, less than the whole, of the frequency band of said source, said first and second frequency band passes being different.
Claim 3
Dependent Claim
28 words
An energy coupler as defined in claim 1 wherein each of said coupler means includes first and second directional couplers for discretely sampling transmitted and reflected energy respectively.
Claim 4
Dependent Claim
24 words
An energy coupler as defined in claim 2 wherein the band pass frequencies of said first and second coupler means are adjacent each other.
References Cited (Backward Citations)
US3562642A
Cited
US4290009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-19 | 1992-01-18 | 1992-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-19 | 1996-01-18 | 1996-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-19 | 2000-01-18 | 2000-07-19 | $7700.00 | Window Closed / Lapsed |