Frequency generator and communication system
US7091757B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2004 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Jul 19, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D7/14
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The object of the invention is to provide a frequency generator which is composed of an oscillator and a frequency doubler and in which difference in amplitude between differential outputs of the frequency doubler can be equalized at low power consumption without adjustment. To achieve the object, the amplitude of differential outputs of the frequency doubler is detected and the delay time of a variable delay circuit is controlled. Owing to this configuration, in case a frequency of the oscillator varies or in case delay time by the delay circuit used in the frequency doubler varies by process variation and others even if the frequency is fixed, the amplitude of the differential outputs of the frequency doubler can be also equalized in the frequency generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.