Frequency translating devices and frequency translating measurement systems with DC bias added to a mixer diode
US7095989B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2001 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Sep 23, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D7/02
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A frequency translating device (FTD) includes at least one mixer diode connected to down-convert a radio frequency (RF) to an intermediate frequency (IF) and to up-convert an IF to an RF and a source of direct current (DC) bias that is connected to the mixer diode. The source of DC bias provides DC bias to the mixer diode that moves the voltage applied to the mixer diode closer to the threshold voltage of the mixer diode. The mixer diode is turned on in response to the DC bias and a local oscillator (LO) drive. Because DC bias is applied to the mixer diode, the peak to peak voltage range of the LO drive can be reduced, thereby reducing the voltage-dependent capacitance of the mixer diode, causing the FTD to exhibit improved reciprocity. The FTD can be used in a three-pair measurement system to determine the conversion response of another FTD.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.