Mixer having compensation for harmonics of local oscillator signal
US6404263B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 2001 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Jul 11, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D7/1491
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A mixer for a wireless communications system having a differential amplifier that translates an input intermediate frequency voltage signal or an input radio frequency voltage signal to current signals that are supplied to a doubly-balanced switching modulator that develops a differential mixed output radio frequency signal or intermediate frequency signal that is the product of the current signals and a local oscillator signal. Included in the differential amplifier are a first reactance circuit and a second reactance circuit each of which provides a low impedance to ground at the second harmonic of the local oscillator signal and a high impedance at the frequency of the input radio frequency signal or input intermediate frequency signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.