RF amplifier and its output 1db compression point dynamic adjustment circuit
A radio frequency amplifier and circuit adjustment technology, applied in high frequency amplifiers, amplifiers, improving amplifiers to reduce temperature/power supply voltage changes, etc. The effect of reducing power loss and meeting linearity requirements
Active Publication Date: 2021-11-19
LANSUS TECH INC
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Problems solved by technology
When pursuing lower power consumption, a lower bias voltage is often required, and the output 1dB compression point is insufficient at this time
Therefore, it is difficult for traditional amplifiers to balance the requirements of lower power consumption and higher output 1dB compression point
Method used
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[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.
[0021] figure 1 A schematic composition diagram of an output 1dB compression point dynamic adjustment circuit of a radio frequency amplifier according to an embodiment of the present application is shown. The regulation circuit 1000 can be connected to the output stage 11 of the amplifier. The adjustment circuit 1000 can act on the input signal V of the output stage 11 according to SIN The magnitude of adjusts the static operating point of the output stage 11.
[0022] Such a...
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The application provides a radio frequency amplifier and a circuit for dynamically adjusting its output 1dB compression point. Wherein, the output 1dB compression point dynamic adjustment circuit of the RF amplifier is connected with the output stage of the amplifier, and the output stage of the RF amplifier includes: a first three-terminal transistor and a second three-terminal transistor connected in series; the adjustment circuit includes: input A signal detector, connected to the control terminal of the first three-terminal transistor, detecting the amplitude of the input signal acting on the control terminal of the first three-terminal transistor; a bias voltage generating circuit, connected to the input signal detector , and connected to the control terminal of the second three-terminal transistor, and generating the bias voltage of the second three-terminal transistor according to the amplitude of the input signal.
Description
technical field [0001] The application belongs to the communication field, and in particular relates to a dynamic adjustment circuit for output 1dB compression point of a radio frequency amplifier, a radio frequency amplifier, an electronic device and a chip. Background technique [0002] At present, the output 1dB compression point is used as an important index of a power amplifier or a signal amplifier. Affects the ability of the circuit to respond to large signals. In a wireless system, increasing the output 1dB compression point of each amplifier in the system is of great significance for improving system performance. [0003] At present, the bias voltage of the traditional amplifier is a fixed bias, so its output 1dB compression point is constant. When pursuing a higher output 1dB compression point, a higher bias voltage is often required, and the power consumption of the amplifier is relatively high at this time. When pursuing lower power consumption, a lower bias v...
Claims
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IPC IPC(8): H03F1/30H03F3/19H03F3/193
CPCH03F1/30H03F1/302H03F3/19H03F3/193H03F2200/18
Inventor 唐生东龙华周永峰
Owner LANSUS TECH INC