Radio frequency switching circuit and semiconductor device including the same

A radio frequency switching circuit having improved input/output power characteristics is provided. The circuit includes basic switching sections each including a plurality of FETs 13 a- 13 d, 14 a- 14 d, 11 a- 11 d or 12 a- 12 d connected in series. The basic switching sections are respectively pro...

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Bibliographic Details
Main Authors NAKATSUKA TADAYOSHI, MIYAGI MASASHI
Format Patent
LanguageEnglish
Published 23.11.2006
Subjects
BASIC ELECTRIC ELEMENTS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
PULSE TECHNIQUE
RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
WAVEGUIDES
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Summary:A radio frequency switching circuit having improved input/output power characteristics is provided. The circuit includes basic switching sections each including a plurality of FETs 13 a- 13 d, 14 a- 14 d, 11 a- 11 d or 12 a- 12 d connected in series. The basic switching sections are respectively provided between an input/output terminal 1 and the ground, between an input/output terminal 3 and the ground, between the input terminals 1 and 2, and between the input terminals 2 and 3. The circuit also includes a plurality of resistors 43 a- 43 d, 44 a- 44 d, 41 a- 41 d and 42 a- 42 d, each having one terminal connected to a drain electrode of a corresponding FET and the other terminal connected to a source electrode of the corresponding FET. A resistor connected between the drain and source electrodes of an FET, among the FETs included in a basic switching section in an OFF state, closer to the input/output terminal to which a signal is inputted has a smaller resistance value.
Bibliography:Application Number: US20060438280