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CMOS power amplifier chip with on-chip integrated detection function

A power amplifier and power detector technology, applied in power amplifiers, DC-coupled DC amplifiers, differential amplifiers, etc., can solve the problems of inability to accurately control wireless communication systems and large fluctuations in the output voltage of detectors, achieving low cost, The effect of low temperature sensitivity and power consumption reduction

Active Publication Date: 2021-04-23
成都知融科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the output voltage of the detector obtained by using this power detection circuit fluctuates greatly under high and low temperature conditions (-55°C~+85°C), which cannot provide a basis for precise control of wireless communication systems

Method used

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  • CMOS power amplifier chip with on-chip integrated detection function
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  • CMOS power amplifier chip with on-chip integrated detection function

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Embodiment Construction

[0027]The invention is further illustrated in connection with the preferred embodiments and the drawings below. Those skilled in the art will appreciate that the described in the following description is illustrative and not limiting, and the scope of the invention should not be limited.

[0028]The specification and claims of the present invention and the "first", "second", etc. of the above drawings are used to distinguish different objects, not to describe a particular order. Moreover, the terms "including" and "have" and any variation, intended to cover the inclusion of the inclusion. For example, a series of steps or units comprising a series of steps or units are not limited to the listed steps or units, but alternatively include the steps or units not listed, or optionally also include Gas steps or units inherent in these processes, methods, or equipment.

[0029]Such asfigure 1 As shown, the circuit schematic of the CMOS power amplifier chip for integrated detection function on th...

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PUM

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Abstract

The invention discloses a CMOS power amplifier chip with an on-chip integrated detection function, and belongs to the technical field of communication. The temperature compensation circuit comprises a power amplifier with the temperature compensation function and a power detector used for detecting the output power of the power amplifier, a resistor is connected to an output port RF_out of the power amplifier in parallel, and a radio frequency signal is transmitted to the input end of a transistor working in a sub-threshold area through the resistor; DC and higher harmonic components are generated through the transistor, and finally, detection voltage Vout is output after RC low-pass filtering, so the amplitude change of the power amplifier can be detected. The CMOS power amplifier chip is simple in circuit structure, small in area, low in cost, excellent in performance and capable of achieving a wide dynamic range and low temperature sensitivity, and a solution is provided for the CMOS power amplifier chip with the silicon-based miniaturized on-chip integrated detection function.

Description

Technical field[0001]The present invention relates to a CMOS power amplifier chip, which specifically involves a CMOS power amplifier chip of on-chip integrated detection function.Background technique[0002]With the continuous development of communication technology, wireless communication technology is increasingly mature, and RF power amplifiers are indispensable key devices in various wireless communication systems. It is mainly used to power the modulated radio frequency signal output by the transmitter. Enlarge to obtain a radio frequency signal that meets the wireless communication needs. In the actual application, the RF signal output from the RF power amplifier is usually required to power detection, thereby providing a basis for the precise control of the wireless communication system. Therefore, there is an urgent need for a CMOS power amplifier chip for integrated detection function on a small piece.[0003]In the prior art, the open number is CN104852695A, which is a Chines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/20H03F3/45
CPCH03F3/20H03F3/45
Inventor 郑中万宋柏陈涛
Owner 成都知融科技有限公司
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