Frequency switch for multiband power amplifier applications and multiband/multistandard power amplifier module
US7593703B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2006 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Feb 1, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7209
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A frequency switch (1), in particular for use in a multiband/multistandard power amplifier module (11, 17), comprising at least two output ports, a first output port (7) being arranged within a first output path (8) and a second output port (9) being arranged within a second output path (10), said output ports (7, 9) being connected with an input port (6) via said output paths (8, 10), each output path (8, 10) being provided with at least one RF block (2a, 2b, 2c, 2d), each RF-block (2a, 2b, 2c, 2d) comprising a capacitor, (3a, 3b, 3c, 3d) a switching element (5a, 5b, 5c, 5d) and a quarterwave section, wherein for each RF-block (2a, 2b, 2c, 2d) a predetermined frequency band is selected and the length of said quarterwave section is matched to said selected frequency band in order to block incoming signals in said selected frequency band if the switching element (5a, 5b, 5c, 5d) of the corresponding RF-block (2a, 2b, 2c, 2d) is switched on. Thus a frequency switch for usage with a multiband power amplifier can be realised which allows selection of different frequency bands with reduced power loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.