High frequency circuit and high frequency power amplifier
AssigneeMitsubishi Electric Corporation
InventorsTakaaki YOSHIOKA, Masatake HANGAI, Koji YAMANAKA
Life of this patent
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Abstract
A wire (14) having a first end connected to a line (2) and a second end connected to a second end of a resistor (9) and having an inductive component La resonating with a parasitic capacitance Ca of the resistor (9), or a wire (16) having a first end connected to a line (3) and a second end connected to a second end of a resistor (12) and having an inductive component Lb resonating with a parasitic capacitance Cb of the resistor (12) are provided. Consequently, gain flatness in an operating frequency band can be improved.
Claims11
A high frequency circuit comprising:
- a series line in which a first line and a second line are connected together via a first resistor;
- a second resistor having a first end grounded;
- and
- a first wire having a first end connected to the first line or the second line, having a second end connected to a second end of the second resistor, and having an inductive component resonating with a parasitic capacitance of the second resistor.
A high frequency power amplifier comprising
- an input matching circuit, a transistor, and an output matching circuit connected together in series, wherein
- at least one matching circuit out of the input matching circuit or the output matching circuit includes a high frequency circuit including:
- a series line in which a first line and a second line are connected together via a first resistor;
- a second resistor having a first end grounded;
- and
- a first wire having a first end connected to the first line or the second line, having a second end connected to a second end of the second resistor, and having an inductive component resonating with a parasitic capacitance of the second resistor.
A high frequency power amplifier comprising
- a plurality of circuits connected together in series via an inter-stage circuit, the plurality of circuits each including an input matching circuit, a transistor, and an output matching circuit connected together in series, wherein
- at least one circuit out of the input matching circuit, the output matching circuit, and the inter-stage circuit includes a high frequency circuit including:
- a series line in which a first line and a second line are connected together via a first resistor;
- a second resistor having a first end grounded;
- and
- a first wire having a first end connected to the first line or the second line, having a second end connected to a second end of the second resistor, and having an inductive component resonating with a parasitic capacitance of the second resistor.
Dependencies are inferred from the claim text.