paper 150305080529

Published: 2015-07-09

Miniaturized Transmitter in Digital Modulation System with Non-constant Envelope for VHF Band

Bonghyuk Park,

Bonghyuk Park

Electronics and Telecommunications Research Institute (ETRI), South Korea

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Byung-Su Kang,

Byung-Su Kang

Electronics and Telecommunications Research Institute, Korea

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Heon-Kook Kwon,

Heon-Kook Kwon

Electronics and Telecommunications Research Institute, Korea

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Sung Jun Lee

Electronics and Telecommunications Research Institute, Korea

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Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)210-213

Abstract

In this paper, compact transmitter included power amplifier linearization in digital modulation with non-constant envelope for VHF band using cartesian feedback loop is presented. The digital modulation(QPSK/16-QAM/64-QAM) signal is non-constant envelope with constant peak to average power ratio. Digital modulation signal used when linearizing PA is 64-QAM, 70 ksps symbol rate, 0.35 of roll-off factor, and 7.5 dB PAPR. We used the Mitsubishi’s Silicon power module, RA60H1317M1A, as a results, obtained an Adjacent Channel Power Ratio(ACPR) of less than −72 dBc, Error Vector Magnitude (EVM) of 2.8% at +39 dBm in VHF band. This technique is utilized to achieve miniaturization of transmitter with high linearity.

Citation

Bonghyuk Park, Byung-Su Kang, Heon-Kook Kwon, and Sung Jun Lee, "Miniaturized Transmitter in Digital Modulation System with Non-constant Envelope for VHF Band," Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)210-213

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