Power amplification device and wireless equipment

Abstract

A power amplification apparatus and a radio device, comprising a power divider, a carrier frequency amplifier, a peak amplifier and a microstrip line. The input ends of the carrier frequency amplifier and peak amplifier are connected to the output end of the power divider respectively, both the output end of the carrier frequency amplifier and the output end of the peak amplifier are connected to the input end of the microstrip line, and an air microstrip line is adopted for the connection between the output end of the peak amplifier and the input end of the microstrip line. The above technical solution that an air microstrip line is adopted in a power amplification apparatus can better facilitate the PCB layout and the power combination of a carrier frequency amplifier and a peak amplifier in a Doherty power amplifier and reduce the differential loss, thus realizing high efficiency and high linearity of power amplification more easily.

Description

technical field [0001] The invention relates to the technical field of power amplification, in particular to a power amplification device and wireless equipment. Background technique [0002] In wireless base stations, the power amplifier determines the performance of the signal chain in terms of power consumption, linearity, efficiency and cost. The improvement of power amplifier efficiency has also become the focus of competition in the industry. At present, all power amplifier manufacturers in the industry are investing in Doherty (Doherty) technology research, and the power amplifiers using Doherty technology are being shipped in large quantities, and the manufacturers have not stopped to continue the pace of research and development of Doherty technology. [0003] Such as figure 1 As shown, the traditional positive Doherty power amplifier is divided into two channels, one is Main Amplifier (main amplifier), or called Carrier Amplifier (carrier frequency amplifier), whi...

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Problems solved by technology

[0004] However, in some applications, the positive Doherty is not necessarily applicable, so the reverse Doherty will be used. However, due to restrictions such as tube layout and board size, the length of the offset line after the Peak Amplifier may not be appropriate, resulting in a power amplifier Poor overall indicators, such as low efficiency, poor linearity, etc.

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