Mixer circuit
US10903807B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 23, 2018 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Aug 23, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45714
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention relates to a mixer circuit, which includes a transconductance stage circuit, a switch stage circuit and a load stage circuit which are electrically connected in sequence. The transconductance stage circuit is used to access a radio frequency voltage signal and convert the radio frequency voltage signal into a radio frequency current signal The switch-level circuit is used to access the local oscillator signal and the radio frequency current signal, and the switch-level transistor is turned on by using the local oscillator signal; the load-level circuit is used to convert the intermediate frequency current signal into a voltage signal for output. In the present invention, the transconductance stage circuit adopts a transistor superposition technology structure, which improves the conversion gain of the mixer; at the same time, it uses a source degenerate inductance structure, which further improves the conversion gain and linearity of the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.