Invention Grant
US08045939B2 Method for controlling a linear amplifier and power amplifier arrangement
有权
用于控制线性放大器和功率放大器布置的方法
- Patent Title: Method for controlling a linear amplifier and power amplifier arrangement
- Patent Title (中): 用于控制线性放大器和功率放大器布置的方法
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Application No.: US12374898Application Date: 2006-07-24
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Publication No.: US08045939B2Publication Date: 2011-10-25
- Inventor: Richard Hellberg , Tony Fondén
- Applicant: Richard Hellberg , Tony Fondén
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (Publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (Publ)
- Current Assignee Address: SE Stockholm
- Agent Roger S. Burleigh
- International Application: PCT/SE2006/000907 WO 20060724
- International Announcement: WO2008/013481 WO 20080131
- Main IPC: H04B1/04
- IPC: H04B1/04

Abstract:
The present invention relates to a method for controlling an amplifier unit having at least one drive signal input connection 1, at least one power supply voltage input connection 2 and an output connection 4. The amplifier unit comprises at least one amplifier, and the method comprises the steps of: feeding each amplifier by a drive signal from said at least one drive signal input connection 1, and feeding each amplifier by a power supply voltage from said at least one power supply voltage input connection, whereby said amplifier unit has defined output characteristics at the output connection 4 and a predetermined power supply voltage at a maximum RF output power for a RF signal. The method further comprises the steps of: operating at least one amplifier with RF output voltage characteristics to obtain a reduced shunt loss, compared to a reference shunt loss, at the output connection 4. The reference shunt loss is obtained when operating each amplifier as a class B amplifier having the defined output characteristics at the output connection 4 and the predetermined power supply voltage at a maximum RF output power for the RF signal, and modulating the power supply voltage to each amplifier to reduce excessive voltage drop over the amplifier.
Public/Granted literature
- US20100019843A1 Method For Controlling A Linear Amplifier And Power Amplifier Arrangement Public/Granted day:2010-01-28
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