Distributed amplifier having improved D.C. biasing and voltage standing wave ratio performance
US4864250A · kind A · utility
10Cited by
1References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1987 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Jan 29, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/607
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A distributed amplifier having an on chip DC biasing network including a spiral inductor. The spiral inductor has a low resistance for providing a minimal resistance path for the DC biasing, while also having a high inductance for isolating the RF signal from the DC bias sources. Additionally, an inductive lead connected between the spiral inductor and the amplifier has a predetermined inductance such that this inductance is matched with the inherent capacitance of the spiral inductor in order to provide a substantially same impedance as that of the amplifying stages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.