Phase correction circuit for transistor using high-frequency signal
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsMamiko Yamaguchi, Yoshinobu Sasaki
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Abstract
In order to stabilize a phase of an output signal of a transistor, a phase correction circuit includes: a) a circuit element connected in parallel to a gate of the transistor, an impedance including a reactance changing in response to a potential difference; and b) a voltage control circuit to decrease the reactance component in response to the increase in potential of the gate, wherein total reactance component of the circuit element and the transistor is maintained to a predetermined value. Because of the function of the phase correction circuit, another circuit using the output signal of the transistor can work correctly.
Claims4
A phase correction circuit for a transistor, comprising:
- a circuit element having an output terminal connected to a gate of a transistor to which a control signal line is connected, and an input terminal, wherein the circuit element has a reactance that changes with potential difference between the input terminal and the output terminal;
- and
- a voltage control circuit supplying a voltage to the input terminal of the circuit element so that the reactance of the circuit element decreases in response to an increase in potential of the gate, wherein a sum of the reactance of the circuit element and a gate-source reactance of the transistor remains substantially constant.
Dependencies are inferred from the claim text.