Filtering type frequency switching circuit
US7301419B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2004 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Dec 2, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/15
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Two lines Ai1 (i=1 or 2) are connected to an input terminal In. The line Ai1 is grounded via a capacitor Ci1. The line Ai1 and a line Bi1 form a coupled line. One end of the line Bi1 is connected to a positive pole of a diode Di1 which is grounded at its negative pole. Lines Bi0 and Bi2 are connected to the other end of the line Bi1. The other end of the line Bi0 is connected to a capacitor Ci0 which is grounded at its other end and a resistor Ri0 which is connected to a voltage control terminal VCTLi at its other end. The other end of the line Bi2 is connected to the positive pole of a diode Di2. The line Bi2 and the line Ai2 form a coupled line. One end of the line Ai2 is connected to an output terminal Out-i, and the other end is grounded via a capacitor Ci2. The output of the terminals Out-1, 2 are switched to 5.8 GHz band, 4.8 GHz band and cut-off, by applying to VCTL1 and VCTL2 three potentials, that is, ground potential. positive potential which causes no current flow and positive potential which causes current flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.