Microwave phase shifter including a reflective phase shift stage and a frequency multiplication stage
US6111477A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1997 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Apr 17, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A phase shifter/modulator which provides linear phase control of a microwave continuous wave carrier signal. Linear phase shift range in excess of 360 degrees is provided as a result of linear variation in control voltage. A reference signal, at a subharmonic of the output carrier signal frequency, is injected into a highly linear fractional range reflection type phase shifter. This fractional phase modulated signal is input to a field effect transistor (FET) based frequency/phase multiplier. The frequency/phase multiplier translates the subharmonic reference signal to the desired output carrier frequency with the full 360 degree phase shift range imposed on the output carrier signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.