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http://dx.doi.org/10.5515/KJKIEES.2010.21.5.510

Design of Cartesian Feedback Loop Linearization Chip for UHF Band  

Kang, Min-Soo (Radio Technology Group, ETRI)
Chong, Young-Jun (Radio Technology Group, ETRI)
Oh, Seung-Hyeub (Dept. of Electronics Engineering, Chungnam National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.5, 2010 , pp. 510-518 More about this Journal
Abstract
In this paper, the designed and implemented results of CFL linearization chip which can be used in mobile radio and TRS terminal of UHF band(380~910 MHz), using $0.6\;{\mu}m$ BiCMOS process based on Si, are shown. As gain control circuits for modifying transmit power are inserted not only in feedback path but also in forward path, the stability of CFL is maintained. And, DC-offset correction function of S/H structure, which is suitable for walkie-talkie PTT operation and is easily implemented, is realized. The performance test results of transmitter show that the regulation of FCC emission mask at PEP 3 W(34.8 dBm) is satisfied when the CQPSK modulated signal is fed and more than 30 dBc improvement of 3rd order IMD is achieved when two-tone signal is inputted.
Keywords
Cartesian Feedback Loop; APCO P25; Ultra-Narrowband;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 정영준 외 4명, "디지털 초협대역 단말기용 CFL 선형화 칩 설계", 한국전자파학회논문지, 16(7), pp. 671-679, 2005년 7월.   과학기술학회마을
2 M. Johansson, T. Mattsson, "Transmitter linearization using Cartesian feedback for linear TDMA modulation", Proc. IEEE VTC, pp. 439-444, 1991.   DOI
3 M. Boloorian, J. P. McGeehan, "The frequencyhopped Cartesian feedback linear transmitter", IEEE Trans VTC Tech., vol. 45, pp. 688-706, Nov. 1996.   DOI
4 M. Boloorian, J. P. McGeehan, "Automatic remove of Cartesian feedback transmitter imperfections", IEEE Proc. Commu., vol. 144, no. 4, pp. 281-288, Aug. 1997.   DOI
5 J. L. Dawson, T. H. Lee, "Cartesian feedback for RF power amplifier linearization", Proc. of American Control Conference, pp. 361-366, 2004.
6 S. Pipilos et al., "A transmitter IC for TETRA systmes based on a Cartesian feedback loop linearization technique", IEEE Journal of SSC, vol. 40, no. 3, pp. 707-718, Mar. 2005.   DOI
7 Part 90, Title 47, Code of Federal Regulations (Private Land Mobile Services) Edition, FCC, Oct. 2001.
8 A. Batman, D. M. Haines, and R. J. Wilkinson, "Linear transceiver architectures", Proc. 38th VTC, pp. 478-484, 1988.