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Doherty radio frequency integrated power amplifier

An amplifier and success rate technology, applied in the field of Doherty RF integrated power amplifier, which can solve the problems of difficult chip implementation and large size.

Pending Publication Date: 2022-02-25
LANSUS TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, for the Doherty radio frequency integrated power amplifier of the related art, for the monolithic microwave integrated circuit, the power divider and the quarter-wavelength transmission line of the traditional Doherty radio frequency integrated power amplifier are too large in size to be difficult to realize on the chip, especially Sub-6GHz frequency band, the lower the frequency, the longer the quarter-wavelength transmission line

Method used

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  • Doherty radio frequency integrated power amplifier
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  • Doherty radio frequency integrated power amplifier

Examples

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Embodiment 1

[0039] An embodiment of the present invention provides a Doherty radio frequency integrated power amplifier 100 .

[0040] Please also refer to Figure 2-3 As shown, among them, figure 2 It is a schematic diagram of the application circuit structure of the Doherty radio frequency integrated power amplifier of the present invention; image 3 It is a schematic structural diagram of an application circuit of an embodiment of the Doherty radio frequency integrated power amplifier of the present invention.

[0041] The Doherty RF integrated power amplifier 100 includes a driver amplifier 1 , a carrier input matching network 2 , a carrier power amplifier 3 , a peak input matching network 4 , a peak power amplifier 5 and a power combining and phase shifting network 6 .

[0042] The circuit structure of the Doherty radio frequency integrated power amplifier 100 is:

[0043] The input terminal of the driving amplifier 1 is used as the input terminal RFin of the Doherty radio freque...

Embodiment 2

[0061] Embodiment 2 provides a Doherty radio frequency integrated power amplifier 101 . Please refer to Figure 5 shown.

[0062] The Doherty radio frequency integrated power amplifier 101 provides the drive amplifier 1, the carrier input matching network 2, the carrier power amplifier 3, the peak input matching network 4, the Doherty radio frequency integrated power amplifier 100 circuit integration. Describe the specific circuit of the peak power amplifier 5. Therefore, the Doherty radio frequency integrated power amplifier 101 is a specific technical solution with a small layout area and high power added efficiency. Wherein, in the second embodiment, the driving amplifier 1 , the carrier power amplifier 3 and the peak power amplifier 5 are all realized by transistors.

[0063] The specific circuit structure of Doherty radio frequency integrated power amplifier 101 is:

[0064] The driving amplifier 1 includes a first inductor L1, a second inductor L2, a first capacitor ...

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Abstract

The invention provides a Doherty radio frequency integrated power amplifier. The Doherty radio frequency integrated power amplifier comprises a driving amplifier, a carrier input matching network, a carrier power amplifier, a peak value input matching network, a peak value power amplifier and a power synthesis and phase shift network. The output end of the driving amplifier is divided into two paths which are respectively connected with the input end of the carrier input matching network and the input end of the peak value input matching network; the output end of the carrier input matching network is connected to the input end of the carrier power amplifier; the output end of the carrier power amplifier is connected to the first input end of the power synthesis and phase shift network; the output end of the peak value input matching network is connected to the input end of the peak value power amplifier; the output end of the peak power amplifier is connected to the second input end of the power synthesis and phase shift network; and the power synthesis and phase shift network comprises a Balun impedance transformer, a capacitor Cb1, a capacitor Cb2, a capacitor Cb3, a capacitor Cb4 and a capacitor Cb5. The Doherty radio frequency integrated power amplifier is small in layout area and high in power additional efficiency.

Description

technical field [0001] The invention relates to the technical field of radio frequency integrated circuits, in particular to a Doherty radio frequency integrated power amplifier. Background technique [0002] In order to meet people's requirements for high data communication rates, 5G wireless communication technology uses high-order quadrature amplitude modulation (QAM) technology, and the modulated signal has a very high peak-to-average ratio (PAPR). High peak-to-average ratio signals impose strict requirements on the linearity of RF power amplifiers. In order to ensure the undistorted transmission of the signal, the wireless communication system requires the RF power amplifier to work far away from the power back-off state of the power compression point, so as to ensure the linear amplification of the RF signal. However, the efficiency of RF power amplifiers is highest near the saturation region, and the efficiency at the power back-off point is significantly reduced. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/213H03F3/195H03F1/02
CPCH03F3/213H03F3/195H03F1/0288H03F2200/451
Inventor 彭艳军宣凯郭嘉帅
Owner LANSUS TECH INC