Logarithmic detector amplifier system for use as high sensitivity selective receiver without frequency conversion
US10333475B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2017 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Oct 2, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/462
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A logarithmic detector amplifying (LDA) system is provided for use as a high sensitivity receive booster or replacement for a low noise amplifier in a receive chain of a communication device. The LDA system includes an amplifying circuit configured to receive an input signal having a first frequency and generate an oscillation based on the input signal, a sampling circuit coupled to the amplifying circuit and configured to terminate the oscillation based on a predetermined threshold to periodically clamp and restart the oscillation to generate a series of pulses modulated by the oscillation and by the input signal, and one or more resonant circuits coupled with the amplifying circuit and configured to establish a frequency of operation and to generate an output signal having a second frequency, the second frequency being substantially the same as the first frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.