Method and apparatus of an input resistance of a passive mixer to broaden the input matching bandwidth of a common source/gate LNA
US8626106B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 2011 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Apr 26, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/75
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A cascode common source and common gate LNAs operating at 60 GHz are introduced and described. The cascode common source LNA is simulated to arrive at an optimum ratio of upper device width to the lower device width. The voltage output of the cascode common source LNA is translated into a current to feed and apply energy to the mixer stage. These input current signals apply the energy associated with the current directly into the switched capacitors in the mixer to minimize the overall power dissipation of the system. The LNA is capacitively coupled to the mixer switches in the I and Q mixers and are enabled and disabled by the clocks generated by the quadrature oscillator. These signals are then amplified by a differential amplifier to generate the sum and difference frequency spectra.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.