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US 6,639,489 B2Granted
Composite high-frequency switch, high-frequency module, and communication apparatus
AssigneeMurata Manufacturing Co., Ltd.
InventorsNobuyoshi Okuda, Tetsuro Harada
Life of this patent
Estimating the term…
Abstract
A high-frequency module prevents distortion in first and second diodes of a high-frequency switch in a communication system which is not selected without providing a negative power source, and a communication apparatus includes such a high-frequency module. The high-frequency module includes a diplexer having inductors and capacitors, and high-frequency switches including first and second diodes, transmission lines, inductors, and capacitors.
Claims21
A composite high-frequency switch comprising:
- a plurality of high-frequency switches, each including a first terminal, a second terminal, a first control terminal, a second control terminal, a first diode, a second diode, and a transmission line;
- wherein
- the composite high-frequency switch arranged such that the first terminal, the transmission line, the first diode, and the second terminal are connected in series, the first terminal side of the transmission line is connected to a ground via the second diode, the first control terminal is connected to the ground side of the second diode, and the second control terminal is connected to the second terminal side of the first diode;
- and
- at least two of the plurality of high-frequency switches are arranged such that the second control terminals are connected to each other and the connection point thereof is connected to a common control terminal via a resistor.
2 more elements
A composite high-frequency switch, comprising:
- a plurality of high-frequency switches, each including a first terminal, a second terminal, a first control terminal, a second control terminal, a first diode, a second diode, and a transmission line;
- wherein
- the composite high-frequency switch is arranged such that the first terminal, the transmission line, the first diode, and the second terminal are connected in series, the first terminal side of the transmission line is connected to a ground via the second diode, the first control terminal is connected to the ground side of the second diode, the second control terminal is connected to the second terminal side of the first diode;
- and
- at least two of the plurality of high-frequency switches are arranged such that the first control terminals are connected to each other and the connection point thereof is connected to a common control terminal via a resistor.
2 more elements
A composite high-frequency switch, comprising:
- a plurality of high-frequency switches each having a first terminal, a second terminal, a first control terminal, a second control terminal, a first diode, a second diode, and a transmission line;
- wherein
- the composite high-frequency switch is arranged such that the first terminal, the transmission line, the first diode, and the second terminal are connected in series, the first terminal side of the transmission line is connected to a ground via the second diode, the first control terminal is connected to the ground side of the second diode, the second control terminal is connected to the second terminal side of the first diode;
- and
- at least two of the plurality of high-frequency switches are arranged such that the first control terminal of a first of the high-frequency switches and the second control terminal of a second of the high-frequency switches are connected to each other and the connection point thereof is connected to a common control terminal via a resistor.
2 more elements
Dependencies are inferred from the claim text.