Emitter-coupled oscillator with differential switching control
US5357220A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1993 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | Jan 21, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/2821
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An emitter-coupled oscillator circuit suitable for monolithic integration. The emitter-coupled oscillator circuit comprises (a) switching means for producing at an output port an output signal having a variable oscillation frequency, and the switching means has first and second inputs for receiving a differential control signal and the switching means includes first and second terminals for connecting to a capacitor; (b) output port means coupled to the output port of the switching means for outputting the output signal; (c) frequency control means coupled to the first and second terminals of the switching means for adjusting the oscillation frequency of the output signal; and (d) switching control means for producing a differential control signal at first and second outputs coupled to the first and second inputs respectively of the switching means and the switching means being responsive to the differential control signal for producing the output signal, and the switching control means having a control terminal coupled to the frequency control means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.