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A GaAs radio frequency power amplifier applied to fifth-generation mobile communication 28GHz

A radio frequency power, mobile communication technology, used in power amplifiers, amplifiers, amplifiers with semiconductor devices/discharge tubes, etc.

Pending Publication Date: 2019-05-03
佛山臻智微芯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design of the 28GHz millimeter wave frequency band circuit faces many problems, such as the linearity and efficiency of the power amplifier, the heat dissipation of the power device, the stability of the circuit, the bandwidth of the circuit, etc.

Method used

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  • A GaAs radio frequency power amplifier applied to fifth-generation mobile communication 28GHz
  • A GaAs radio frequency power amplifier applied to fifth-generation mobile communication 28GHz
  • A GaAs radio frequency power amplifier applied to fifth-generation mobile communication 28GHz

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Embodiment Construction

[0008] Such as figure 1 The RF power amplifier shown in the millimeter wave frequency band can be applied to fully integrated RF circuits, communication SOC and other fields, including input matching network, pre-stage gain amplifier circuit, inter-stage matching network, post-stage power amplifier circuit and impedance transformation network. The harmonic suppression network is connected in sequence;

[0009] The first stage gain amplifying circuit, the intermediate stage buffer circuit, and the subsequent stage power amplifying circuit are respectively connected with a first bias circuit, a second bias circuit, and a third bias circuit. The bias circuits at all levels include a gate bias circuit bias and a drain bias circuit, and the drain bias circuit is connected to Vcc through a choke high-frequency choke inductance.

[0010] Such as figure 1 As shown, the input matching network includes an inductor La and a capacitor Ca. The RFin signal is input into the matching netw...

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Abstract

The invention discloses a 28GHz radio frequency power amplification circuit applied to a fifth-generation communication millimeter wave frequency band. The circuit comprises an input matching circuit,an interstage buffer circuit, a final-stage power output stage, an interstage matching circuit and an output harmonic suppression matching network. Input matching adopts a T-shaped matching structure, an input stage adopts a common-source amplifier structure and is statically biased in an A-class working state, an intermediate buffer stage and a final-stage power pushing stage are statically biased in a B-class working state, the efficiency is improved, and an output matching network adopts a harmonic suppression network structure. And the harmonic suppression network adopts a series resonance structure to enable second harmonic, third harmonic and fifth harmonic to be in short circuit to the ground, so that the efficiency is improved, and the linearity of radio frequency signal output ishigher. A radio frequency input signal is subjected to power amplification through first three stages of PA, passes through a second harmonic suppression network, a broadband matching network, a third harmonic suppression network and a fifth harmonic suppression network, and finally is transmitted to a load through a coupling capacitor.

Description

technical field [0001] The invention relates to the field of radio frequency power amplifiers, in particular to a GaAs technology-based radio frequency power amplifier of 28 GHz in the middle and high frequency bands of the fifth-generation mobile communication. Background technique [0002] The current wireless communication technology has entered the post-4G era. 4G technology has a wide range of applications and mature technology. However, with the rapid development of society, people's needs are further improved, and new requirements are put forward for network speed and network quality. At the end of 2017, 3GPP established the first fifth-generation communication standard, further stimulating countries with research and development capabilities to increase capital investment in the research and development of fifth-generation communication systems. The design of the 28GHz millimeter-wave frequency band circuit faces many problems, such as the linearity and efficiency o...

Claims

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Application Information

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IPC IPC(8): H03F1/32H03F1/56H03F3/193H03F3/21
Inventor 周正轩章国豪刘祖华
Owner 佛山臻智微芯科技有限公司
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