Study on linearization of Ka-band wideband traveling-wave tube amplifer

Han Fei; Xia Lei; Li Baojian

doi:10.11884/HPLPB202133.200353

Volume 33 Issue 4

May 2021

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Han Fei, Xia Lei, Li Baojian. Study on linearization of Ka-band wideband traveling-wave tube amplifer[J]. High Power Laser and Particle Beams, 2021, 33: 043003. doi: 10.11884/HPLPB202133.200353

Citation:

Han Fei, Xia Lei, Li Baojian. Study on linearization of Ka-band wideband traveling-wave tube amplifer[J]. High Power Laser and Particle Beams, 2021, 33: 043003. doi: 10.11884/HPLPB202133.200353

Han Fei, Xia Lei, Li Baojian. Study on linearization of Ka-band wideband traveling-wave tube amplifer[J]. High Power Laser and Particle Beams, 2021, 33: 043003. doi: 10.11884/HPLPB202133.200353

Citation:

Han Fei, Xia Lei, Li Baojian. Study on linearization of Ka-band wideband traveling-wave tube amplifer[J]. High Power Laser and Particle Beams, 2021, 33: 043003. doi: 10.11884/HPLPB202133.200353

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Study on linearization of Ka-band wideband traveling-wave tube amplifer

doi: 10.11884/HPLPB202133.200353

1.
The Twelfth Institute of China Electronics Technology Group Corporation, Beijing 100015, China
2.
School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China

Received Date: 2020-12-28
Rev Recd Date: 2021-03-04

Available Online: 2021-03-17

Publish Date: 2021-05-02

Abstract

Abstract

Linearizer is a key component in the millimeter-wave communication system, it plays an important role in improving the linearity performance of amplifier and communication quality. At present, the development of traveling-wave tube amplifier (TWTA) linearization technology cannot meet the application requirements of communication technology, therefore, the research of linearization technology is very important. In this paper we propose a kind of a new wide-band analog pre-distortion structure used to improve the nonlinear characteristics of Ka-band TWTA. The simulation results show that when the input power changes from −20 to 10 dBm in the frequency range of 26−30 GHz, the gain expansion of the linearizer is greater than 5.08 dB, and the phase expansion exceeds 64.81°. The linearizer and the TWTA are cascaeded for testing. The test results show that the gain compression and phase compression of center frequence is less than 3.12 dB and 2.31° respectively, and the third-order intermodulation (IMD3) improves significantly.
- linearization,
- millimeter-wave,
- broadband,
- analog predistortion,
- traveling-wave tube amplifer

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References(16)

References

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