-
公开(公告)号：EP1585215A1
公开(公告)日：2005-10-12
申请号：EP05102746.4
申请日：2005-04-07
Applicant: M/A-Com Eurotec B.V.
CPC classification number: H03F1/302 , H03F3/72 , H03F2200/18
Abstract: An apparatus and method for biasing a power amplifier circuit operating as a Digital to Analog Converter (DAC) are described. The bias circuit comprises a first transistor with a reference voltage coupled to its base terminal, a second transistor coupled to the emitter terminal of the first transistor at its collector terminal, and a third transistor with its base terminal coupled to the first and second transistors, and to an input signal.
Abstract translation: 描述用于偏置作为数模转换器（DAC）工作的功率放大器电路的装置和方法。 偏置电路包括具有耦合到其基极端子的参考电压的第一晶体管，在其集电极端子处耦合到第一晶体管的发射极端子的第二晶体管，以及其基极端子耦合到第一和第二晶体管的第三晶体管， 和输入信号。
-
公开(公告)号：EP1330021A2
公开(公告)日：2003-07-23
申请号：EP03250248.6
申请日：2003-01-15
Applicant: M/A-Com Eurotec B.V.
IPC: H03F1/02
CPC classification number: H03F1/0272 , H03F1/0277
Abstract: A power amplifier (100) has a first stage amplifier (102) and a second stage amplifier (106), each stage of the power amplifier being configured in one of at least two power states based on a desired power output. When the first and second stages (102,106) are configured in a first state, the power amplifier delivers efficient amplification in a first output power range and, when the first and second stages are configured in a second state, the power amplifier delivers efficient amplification in a second output power range. By configuring each stage (102,106) in one of at least two states, a high level of power efficiency can be achieved for a broad range of power levels.
Abstract translation: 功率放大器（100）具有第一级放大器（102）和第二级放大器（106），功率放大器的每一级基于期望的功率输出被配置为至少两个功率状态之一。 当第一和第二级（102,106）被配置在第一状态时，功率放大器在第一输出功率范围内提供有效的放大，并且当第一和第二级配置在第二状态时，功率放大器提供有效的放大 第二输出功率范围。 通过将每个级（102,106）配置成至少两种状态之一，可以在宽范围的功率电平上实现高水平的功率效率。
-
公开(公告)号：EP1330021A3
公开(公告)日：2004-10-06
申请号：EP03250248.6
申请日：2003-01-15
Applicant: M/A-Com Eurotec B.V.
CPC classification number: H03F1/0272 , H03F1/0277
Abstract: A power amplifier (100) has a first stage amplifier (102) and a second stage amplifier (106), each stage of the power amplifier being configured in one of at least two power states based on a desired power output. When the first and second stages (102,106) are configured in a first state, the power amplifier delivers efficient amplification in a first output power range and, when the first and second stages are configured in a second state, the power amplifier delivers efficient amplification in a second output power range. By configuring each stage (102,106) in one of at least two states, a high level of power efficiency can be achieved for a broad range of power levels.
-
-
Search Results
3
records
(took 0.023 seconds)
