Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 10, 2007
Patent Application Number
11043282
Date Filed
January 27, 2005
Patent Primary Examiner
Patent abstract
An emitter of a transistor (1) for high frequency amplification and a cathode of a diode (5) for generating reference voltage are grounded via an inductance (20). Anode electric potential of the diode (5) decreases with increase in output power of the transistor (1) and thus the operation of the transistor (1) is limited. Since the diode is an on linear element, it is possible to quickly limit the operation of the transistor (1) in response to an increase in output current, thereby preventing a breakdown caused by overcurrent.
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