Modulation apparatus
AssigneeCanon Kabushiki Kaisha
InventorHideaki Sato
Life of this patent
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Abstract
A modulation apparatus connected to a termination edge of a waveguide path has a matching circuit, a detection diode for detecting a high-frequency signal inputted from the waveguide path, a resistor consumes a detection output of the detection diode, a transmission signal source controls a bias of the detection diode in accordance with a transmission signal, and a high-frequency choke. The high-frequency signal inputted when the detection diode is in a cut-off condition is reflected to the waveguide path. The high-frequency signal inputted when the detection diode is conductive is detected in the detection diode and consumed in a resistor.
Claims26
A modulation apparatus comprising:
- input means for inputting a high-frequency signal;
- detection means for detecting the inputted high-frequency signal;
- control means for controlling said detection means in accordance with a transmission signal;
- and
- consumption means for consuming a detection output of said detection means.
A modulation apparatus comprising:
- detection means provided in a waveguide path used to transfer a high-frequency signal;
- control means for controlling impedance of said detection means in accordance with a transmission signal;
- and
- consumption means for consuming a detection output of said detection means.
A modulation apparatus comprising:
- reflection means, provided at a termination edge of a waveguide path, for reflecting a high-frequency signal inputted from the waveguide path in accordance with a transmission signal, wherein said reflection means comprises,
- detection means for detecting the high-frequency signal inputted from the waveguide path,
- control means for controlling said detection means in accordance with the transmission signal, and
- consumption means for consuming a detection output of said detection means.
A modulation apparatus comprising:
- switching means provided at a termination edge of a waveguide path,
- wherein said switching means comprises,
- detection means for detecting a high-frequency signal inputted from the waveguide path, and
- consumption means for consuming a detection output of said detection means, and
- wherein impedance of said detection means is controlled in accordance with a transmission signal.
A modulating method comprising the steps of:
- inputting a high-frequency signal;
- detecting the inputted high-frequency signal;
- controlling said detection step in accordance with a transmission signal;
- and
- consuming a detection output of said detection step.
Dependencies are inferred from the claim text.