Active inductor
US6028496A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1998 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Jun 3, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/486
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An active inductor which consumes less direct current (DC) power and is stably biased, has a smaller number of bias pins, a higher quality factor (Q) and fewer controlling ports, than that of the prior art, is realized in metal semiconductor field effect transistor or bipolar transistor technology. The active inductor includes an inverting amplifier of a common source (common emitter) type, which inversely amplifies an input signal and outputs the amplified signal as an output signal, a non-inverting amplifier of a common gate (common base) cascode type, which non-inversely amplifies the output signal and the amplified signal as the input signal, a capacitor connected between the input signal and a reference signal, and a biasing portion for biasing the inverting amplifier and the non-inverting amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.