Harmonic termination of power amplifiers using BAW filter output matching circuits
US7728696B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2008 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Oct 29, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/0014
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system, apparatus and method for providing filtering functionality and impedance transformation within a BAW resonator network are disclosed. In particular, a BAW resonator network is designed to provide bandpass capability and a transformation between its input impedance and output impedance. By effectively integrating impedance matching functionality within the BAW resonator network, discrete impedance matching elements previously required within a system may be removed or reduced in size. As a result, matching networks and their associated component costs, insertion losses, and board size contributions may be reduced. Harmonic termination may be provided within the BAW resonator network or a prematch stage to improve efficiency of a power amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.