Microwave switch
Abstract
Abstract A STUB ON A MICROWAVE LINE HAS AN ELECTRICAL QUARTERWAVE LENGTH EQUAL TO AN ODD INTEGER OF QUARTERWAVE LENGTHS. THE STUB INCLUDES A SWITCHING DIODE THAT CAN CHANGE THIS EFFECTIVE ELECTRICAL LENGHT TO BECOME A HALFWAVE LENGTH OR OTHER EVEN INTEGER OF A QUARTERWAVE LENGTHS. THIS EFFECTIVE LENGTHENING OCCURS WHEN A BIAS IS REMOVED FROM THE DIODE, AND RF ENERGY IN THE LINE BACK BIASES THE DIODE TO MAKE IT APPEAR AS A CAPACITANCE. SINCE THE IMPENDANCE OF A MICROWAVE LINE REVERSES ITSELF EACH QUARTERWAVE LENGTH, A SHORT MAY BE MADE TO APPEAR AS AN OPEN, OR AN OPEN MAY BE MADE TO APPEAR AS A SHORT BY THE EXPEDIENT OF LENGTHENING AND SHORTENING THE EFFECTIVE ELECTRICAL LENGTH OF THE LINE.
Inventors
- 👤 Robert H Matsushige
- 👤 Gerald Joseph Latus Jr
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |