MICROWAVE SWITCHING ELEMENT

PURPOSE: To provide improved linearity by connecting a specified circuit element to the gate electrode of a field effect transistor(FET) whose operating state is controlled by control signals impressed to the gate electrode. CONSTITUTION: An input signal terminal 13 is connected to the drain electro...

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Bibliographic Details
Main Author TAKASU HIDEKI
Format Patent
LanguageEnglish
Published 17.01.1997
Edition6
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:PURPOSE: To provide improved linearity by connecting a specified circuit element to the gate electrode of a field effect transistor(FET) whose operating state is controlled by control signals impressed to the gate electrode. CONSTITUTION: An input signal terminal 13 is connected to the drain electrode D of the FET 14 and the drain electrode D is connected to an output signal terminal 15. The gate electrode G is connected through a transmission line 17 whose line length is the 1/4 length of the propagation wavelength of input signals and a resistor 18 provided with an extremely large resistance value to a control signal terminal 19. The impedance of the gate electrode G of the FET 14 is provided with the resistance value extremely large enough to consider that the resistor 18 is in an open state in terms of a high frequency. The resistance value is impedance converted in the transmission line 17 and turned to an extremely small value. Thus, the gate electrode G is turned to a grounded state in terms of the high frequency.
Bibliography:Application Number: JP19950160490