High frequency device, power supply device and communication apparatus
AssigneeSony Corporation
InventorsMasahiro Tanaka, Shun Mitarai, Masahiro Tada, Koji Naniwada
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Abstract
A high frequency device including an electrostatic type vibrator, a pad, and a circuit. The electrostatic type vibrator is operable via a DC bias voltage. The pad is configured to supply the DC bias voltage. The circuit is positioned electrically between the pad and the vibrator. The circuit is configured to stabilize the DC bias voltage. The circuit and the high frequency signal device are on a common substrate.
Claims11
A high frequency device having a high frequency signal device, which comprises:
- an electrostatic type vibrator driven by means of a DC bias voltage,
- a pad to supply the DC bias voltage, and
- a circuit positioned electrically between said pad and said vibrator and configured to stabilize said DC bias voltage, said circuit including a resistor and a capacitor,
- wherein,
- said resistor is positioned serially in a DC feed line between said pad and said vibrator,
- said capacitor is coupled to said resistor and ground, and
- said circuit configured to stabilize the DC bias voltage and said high frequency signal device are provided on a common substrate.
A high frequency device having a high frequency signal device, which comprises:
- an electrostatic type vibrator operated by being applied with a DC bias voltage,
- a pad to supply the DC bias voltage, and
- a circuit positioned electrically between said pad and said vibrator and configured to stabilize said DC bias voltage,
- wherein,
- said circuit having a function of stabilizing the DC bias voltage and said high frequency signal device are on a common substrate.
A power supply device serving for a drive of a high frequency signal device which comprises:
- an electrostatic type vibrator driven by a DC bias voltage,
- a pad to supply the DC bias voltage, and
- a circuit positioned electrically between said pad and said vibrator, and configured to stabilize the DC bias voltage, said circuit including a resistor and a capacitor,
- wherein,
- said resistor is positioned serially in a DC feed line between said pad and said vibrator,
- said capacitor is coupled to said resistor and ground, and
- said circuit configured to stabilize the DC bias voltage and said high frequency signal device are provided on a common substrate.
A communication apparatus comprising:
- a filter for carrying out band limitation of a transmission signal and/or a reception signal, wherein,
- said filter includes an electrostatic drive type vibrator driven by a DC bias voltage,
- a pad to supply said DC bias voltage,
- a circuit positioned electrically between said pad and said vibrator and configured to stabilize said DC bias voltage, said circuit including a resistor and a capacitor,
- wherein,
- said resistor is positioned serially in a DC feed line between said pad and said vibrator,
- said capacitor is coupled to said resistor and ground, and
- said circuit having a function of stabilizing the DC bias voltage is provided on a same substrate on which said filter is formed.
A communication apparatus comprising:
- a filter for carrying out band limitation of a transmission signal and/or a reception signal,
- wherein
- said filter includes an electrostatic drive type vibrator driven by a DC bias voltage,
- a pad to supply said DC bias voltage, and
- a circuit positioned electrically between said pad and said vibrator and configured to stabilize said DC bias voltage, and
- wherein,
- said circuit, having a function of stabilizing the DC bias voltage, and said filter are on a common substrate.
Dependencies are inferred from the claim text.