Voltage regulation and modulation circuit
US8643356B2 · kind B2 · utility
0Cited by
5References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2009 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Jul 20, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/028
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A voltage regulation and modulation circuit of a contactless device, including an adjustable impedance circuit configured to maintain an amplitude of an input voltage to be less than an amplitude of a reference voltage; a current buffer circuit coupled between the adjustable impedance circuit and a load, and configured to buffer a supply current, which is output from the adjustable impedance circuit, to the load; and a parallel regulator coupled to an output of the current buffer circuit, and configured to maintain a constant supply voltage at the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.