Grid voltage control design method for power amplifier powered by single power supply
A design method and single power supply technology, applied in the communication field, can solve the problems of increased design difficulty and increased design cost
Pending Publication Date: 2021-10-15
NANJING DIGITGATE COMM TECH CO LTD
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Problems solved by technology
[0003] Power amplifier design power supply in the prior art is multi-power supply mode, represented by GaN power amplifier, GaN power amplifier in common design mode needs to provide two or more power supply voltages, and needs to cooperate with complex power-on and power-on sequence circuits, which causes Increased design cost and increased design difficulty
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[0022] The present invention will be further explained in detail below in conjunction with the description of the drawings and specific embodiments.
[0023] Such as figure 1 As shown, a technical block diagram of a power amplifier grid voltage control design method powered by a single power supply, including a power supply module, an LDO module, a potentiometer A / D device, a positive and negative voltage conversion module, a voltage comparison module, a switch circuit, a GaN power amplifier and a temperature Control function circuit;
[0024] The output port of the power supply module divides the circuit into two paths, one path is connected to the input port of the LDO module, the other path generates a drain voltage and is connected to the input port of the switching circuit, and the output port of the LDO module is connected to the potentiometer A The input port of the / D device is connected, the output port of the potentiometer A / D device is connected to the input port o...
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The invention discloses a grid voltage control design method for a power amplifier powered by a single power supply, which comprises the following steps that: a power supply module supplies power to generate a drain voltage, the drain voltage is reduced to a fixed low voltage through a voltage reduction module, and then a proper voltage is generated through an adjustable resistor module; the voltage generates a negative voltage through a voltage conversion module, the negative voltage is combined with a temperature control function circuit and then is provided for a power amplifier tube to provide an optimal static grid voltage, so that the power amplifier tube is turned on, and the performance output of the GaN power amplifier circuit is realized, and the GaN power amplifier circuit comprises a power supply module, an LDO module, a potentiometer A / D device, a positive and negative voltage conversion module, a voltage comparison module and a switching circuit, according to the GaN power amplifier and temperature control functional circuit, the design cost is saved on the basis that the circuit is simple and stable, and a good power amplifier grid voltage control function is achieved.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a method for designing grid voltage control of a power amplifier powered by a single power supply. Background technique [0002] With the research and wide application of 5G technology, the working frequency band of the communication industry is also rising, from the previous 600MHz, 1400MHz to 3.5GHz, 4.9Hz, 28GHz and other higher frequency bands, and the antenna mode has also evolved from the previous 1T1R to The current 4T4R, 8T8R, 32T32R and many other models. Therefore, miniaturized power amplifier circuit design and simple circuit design are particularly important. [0003] Power amplifier design power supply in the prior art is multi-power supply mode, represented by GaN power amplifier, GaN power amplifier in common design mode needs to provide two or more power supply voltages, and needs to cooperate with complex power-on and power-on sequence circuits, which cau...
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Login to View More IPC IPC(8): H03F1/30H03F3/21
CPCH03F1/30H03F3/21
Inventor 李江舟张宏泽张力吴春华
Owner NANJING DIGITGATE COMM TECH CO LTD