Attenuator unit, step attenuator, and electronic apparatus
US6181922A · kind A · utility
51Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1996 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Jan 30, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/245
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An attenuator unit for attenuating a signal, the unit includes a .pi.-type attenuator having a first resistor and second and third resistors which are arranged on both sides of the first resistor, a first transistor connected in parallel with the first resistor, and a second transistor connected between a joint node of the second resistor and the third resistor and a first voltage level. In the unit, by controlling a gate voltage of the first transistor and a gate voltage of the second transistor, an attenuation value of the attenuator unit is changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.