Semiconductor device with a filter formed of 3-element series-and-parallel resonators
US5697087A · kind A · utility
31Cited by
11References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1995 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Oct 24, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2001/0078
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A 3-element series parallel resonator, which performs series resonance and parallel resonance at a predetermined frequency by a combination of three elements including an inductor and a capacitor of concentrated constants, is used as a filter. This design can reduce the circuit constant and permits a filter to be formed on a semiconductor substrate. Accordingly, various micro-wave devices, such as an amplifier which requires a filter, a frequency converter, a multiplier and signal switcher, can be designed into an MMIC on a single chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.