Power amplifier circuit, radio frequency front-end circuit, electronic equipment and signal amplification method
A power amplifier circuit and power amplifier technology, which is applied in the direction of power amplifiers, amplifier protection circuit layout, amplifiers, etc., can solve the problems of intensified wireless signal attenuation, smaller base station coverage, and base station inability to cover frequency bands, etc.
Active Publication Date: 2022-07-01
HONOR DEVICE CO LTD
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Problems solved by technology
For example, with the development of wireless networks, the mobile communication spectrum is gradually shifting to high frequencies, and the attenuation of wireless signals during propagation is intensified, resulting in the inability of base stations to cover the frequency bands corresponding to these wireless signals, such as B41, which is relatively high frequency in the 4G frequency band. Frequency band, resulting in smaller coverage of the base station and poorer communication quality
Method used
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Embodiment Construction
[0045] First, the technical terms involved in the embodiments of the present application are explained.
[0046] 1. Matching: When two transmission lines with different characteristic impedances are connected, or when the load impedance is not equal to the characteristic impedance of the transmission line, reflection will occur due to impedance mismatch, resulting in a decrease in the power capacity and transmission efficiency of the transmission system. Based on this, it is necessary to add a matching circuit between two transmission lines or between loads or transmission lines to perform impedance matching on them, so as to reduce the reflection phenomenon caused by impedance mismatch.
[0047] 2. Power amplifier module (PAMiD) with integrated filter / duplexer: In order to reduce the area occupied by the RF front-end, the power amplifier (PA), filter (filter), duplexer ( duplexer) and RF switch (RF Switch) are integrated in one chip, which constitutes PAMiD.
[0048] 3. P...
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The invention discloses a power amplifying circuit, a radio frequency front-end circuit, an electronic device and a signal amplifying method. The power amplifier circuit includes: a first radio frequency input end and a second radio frequency input end; a first radio frequency output end and a second radio frequency output end; a first amplification path and a second amplification path; the first amplification path includes a first power amplifier , the second amplification path includes a second power amplifier. In the single transmission mode, the power amplifier circuit forms a Doherty power amplifier; the first radio frequency input terminal is used for receiving the first signal; the first radio frequency output terminal is used for outputting the amplified first signal. In the dual transmission mode, the first RF input terminal is used to receive the second signal, the second RF input terminal is used to receive the third signal, the first power amplifier is used to amplify the second signal, and the second power amplifier is used to amplify the third signal. The three signals are amplified, the first radio frequency output terminal is used for outputting the amplified second signal, and the second radio frequency output terminal is used for outputting the amplified third signal.
Description
technical field [0001] The present application relates to the technical field of radio frequency amplification, and in particular, to a power amplifier circuit, a radio frequency front-end circuit, an electronic device and a signal amplification method. Background technique [0002] PA is an important part of the radio frequency front-end circuit in electronic equipment, which is responsible for amplifying and transmitting the power of the radio frequency signal to be transmitted, so as to realize the communication with the base station or WiFi hotspot. As electronic devices have higher and higher requirements for communication quality, the requirements for the output power of the PA are also higher and higher. For example, with the development of wireless networks, the mobile communication spectrum has gradually migrated to high frequencies, and the attenuation of wireless signals in the process of propagation has intensified, resulting in the inability of base stations to ...
Claims
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IPC IPC(8): H03F1/02H03F1/07H03F1/52H03F1/56H03F3/20H03F3/21H03F3/189
CPCH03F1/02H03F1/0205H03F1/07H03F1/52H03F1/56H03F3/20H03F3/211H03F3/2178H03F3/189
Inventor 王统
Owner HONOR DEVICE CO LTD