Amplifiers – Combined with automatic amplifier disabling switch means
Reexamination Certificate
2008-01-01
2008-01-01
Choe, Henry (Department: 2817)
Amplifiers
Combined with automatic amplifier disabling switch means
C330S12400D
Reexamination Certificate
active
11594050
ABSTRACT:
A multiple power mode amplifier provides a low and a high power mode without using switches. This amplifier may be used in radio frequency (RF) applications such as mobile telephones, pagers, portable digital assistants, and wireless e-mail devices. In the low power mode, the power consumption of the amplifier is reduced, which will increase operation time, especially important for battery-operated devices. In one implementation, the amplifier includes a number of impedance matching network units (130, 140, 150, and160), impedance transformer (170), and a power stage (120). An implementation provides further power consumption savings by modulating a bias of an amplifier stage.
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Jeon Moon-Seok
Jung Sanghwa
Kim Jung-hyun
Kwon Youngwoo
Lee Dae-hee
Choe Henry
Townsend and Townsend / and Crew LLP
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