Telecommunications – Transmitter – Power control – power supply – or bias voltage supply
Reexamination Certificate
2008-09-02
2008-09-02
Vuong, Quochien B. (Department: 2618)
Telecommunications
Transmitter
Power control, power supply, or bias voltage supply
C375S295000, C330S284000
Reexamination Certificate
active
11188865
ABSTRACT:
An output level of a transmission apparatus1is determined, depending on an attenuation amount of an attenuator30, a gain of one of a high output level amplification section17and a low output level amplification section18, which is used. A reference voltage Vref(H) is discontinuously changed. Depending on the magnitude of the reference voltage Vref(H), it is determined which of the amplification sections17, 18is used, and the attenuation amount of the attenuator30and the gain of the amplification section17, 18are also determined. When the magnitude of the reference voltage Vref(H) is changed, a sum of the attenuation amount of the attenuator30and a gain change amount of a switch amplification section19is substantially zero.
REFERENCES:
patent: 4890077 (1989-12-01), Sun
patent: 5627857 (1997-05-01), Wilson
patent: 6081701 (2000-06-01), Norimatsu
patent: 6847807 (2005-01-01), Fujiki
patent: 2000-165311 (2000-06-01), None
Inamori Masahiko
Koizumi Haruhiko
Motoyoshi Kaname
Nakayama Masao
Takagi Tsunehiro
Matsushita Electric Industrial Co. LTD
Vuong Quochien B.
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