بهبود میزان خطینگی تقویت‌کننده توان با ترکیب روش‌های پیش‌خور و دوهرتی

نوع مقاله : علمی-پژوهشی

نویسندگان

1 دانشجوی دکتری، دانشکده مهندسی برق، دانشگاه علم و صنعت ایران، تهران، ایران

2 دانشیار، دانشکده مهندسی برق، دانشگاه علم و صنعت ایران، تهران، ایران

3 کارشناس ارشد، پژوهشکده سامانه های ماهواره، پژوهشگاه فضایی ایران

چکیده

گسترش روزافزون سیستم­های مخابراتی منجر به طراحی پیچیده­تر ادوات شده­ است. یکی از مهمترین این ادوات که در واقع طبقه آخر فرستنده قبل از آنتن محسوب می­شود، تقویت­کننده توان است و یکی از این پیچیدگی­های طراحی، نیاز به خطینگی بیشتر در تقویت‎کننده توان و درعین‌حال راندمان بالا است. روش­های مختلفی برای بهبود خطینگی تقویت­کننده­ها وجود دارد، اما معمولاً هرچه میزان بهبود خطینگی بیشتر باشد پیچیدگی آن نیز بیشتر شده و در پی آن راندمان نیز کاهش می­یابد. این در حالی است که طراحی تقویت­کننده به خودی خود دارای پیچیدگی است. یکی از روش‎های مناسب برای بهبود خطینگی تقویت‎کننده که راندمان را نیز هم‌زمان افزایش می‎دهد، ساختار دوهرتی است. ساختارهای مختلفی از چینش دوهرتی بررسی شده­اند که خاصیت­های مختلفی ایجاد می­کنند. در این مقاله چینشی جدید برای ساختار دوهرتی ارائه ‌شده است که بهبود زیادی در خطینگی می‎دهد و درعین‌ سادگی، راندمان بالایی نیز دارد. این چینش ترکیبی از ساختار دوهرتی و پیش‌خور است و تنظیم آن به سادگی می­تواند صورت پذیرد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Doherty Power Amplifier Linearity Improvement Using Internal Feed-Forward Network

نویسندگان [English]

  • Siamak Salmani 1
  • Majid Tayarani 2
  • Razieh Narimani 3
1 Faculty of Electrical Engineering, University of Science and Technology, Tehran, Iran
2 Faculty of Electrical Engineering, University of Science and Technology, Tehran, Iran
3 Faculty of Electrical Engineering, University of Science and Technology, Tehran, Iran
چکیده [English]

The continuous expansion of telecommunication systems has led to more complex design of devices. One of the most important of these devices, which is usually considered as the last stage of the transmitter before the antenna, is the power amplifier, and one of these design complications is the need for more linearity in the power amplifier and high efficiency at the same time. There are various methods to improve the linearity of amplifiers, but usually, the higher the linearity improvement, the more complex it is, and the efficiency usually decreases. Meanwhile, the design of the amplifier itself is complicated. One of the suitable methods to improve the linearity of the amplifier, which also increases the efficiency at the same time, is the Doherty structure. Different structures of Doherty arrangement have been investigated, which create different properties. In this paper, a new arrangement for the Doherty structure is presented, which gives a great improvement in linearity and at the same time has high efficiency. This arrangement is a combination of doherty and forward structure and its adjustment can be done easily.

کلیدواژه‌ها [English]

  • Linearity
  • efficiency
  • doherty power amplifer
  • feed-forward

مراجع

[1] F. Raab, P. Asbeck, S. Cripps, P.Kenington, Z. Popovic, N. Pothecary, "Power Amplifiers and Transmitters for RF and Microwave," IEEE Trans. Microw. Theory Tech, vol. 50, p. 814–826, 2002.
[2] D. Lim, S. Heo and J. No, "An Overview of Oeak-to-Average Power Ratio Reduction Schemes for OFDM Signals," in Journal of Communications and Networks, vol. 11, no. 3, pp. 229-239, 2009.
[3] S. H. Han and J. H. Lee, "An Overview of Peak-to-Average Power Ratio Reduction Techniques For Multicarrier Transmission," in IEEE Wireless Communications, vol. 12, no. 2, pp. 56-65, 2005.
[4] W. H.Doherty, "A New High Efficiency Power Amplifier for Modulated Waves," Proc. IRE, vol. 24, pp. 1163-1182, 1936.
[5] B. Kim, J. Kim, I. Kim, and J. Cha, “The Doherty Power Amplifier,” IEEE Microw. Mag., vol. 7, no. 5, pp. 42–50, 2006.
[6] R. Quaglia, M. Pirola, and C. Ramella, "Offset Lines in Doherty Power Amplifiers: Analytical Demonstration and Design," IEEE Microw. Wireless Compon. Lett, Vols. 23,no. 2, pp. 93-95, 2013.
[7] A. Grebennikov and S. Bulja, "High-Efficiency Doherty Power Amplifiers: Historical Aspect and Modern Trends," Proc. IEEE, Vol. 100, no.12, pp. 3190-3219, Dec. 2012.
[8] Z. Zeinodin,Z.H. firoozeh and R. Bahadori, “Design and manufacturing a low-noise balanced amplifier based on HJFET transistors in the 9-11 GHz frequency band,” Journal of Electrical Engineering, University of Tabriz, Vol.47, No.1, pp 93-105, 2017.
[9] J. Yi, Y. Yang, M. Park, W. Kang and B. Kim, "Analog Predistortion Linearizer for High-Power RF Amplifiers," in IEEE Transactions on Microwave Theory and Techniques, vol. 48, no. 12, pp. 2709-2713, 2000.
[10] S. C. Cripps, “RF Power Amplifiers for Wireless Communications,” Norwood, MA: Artech House, 2006.
[11] J. Kim, B. Fehri, S. Boumaiza, and J. Wood, “Power Efficiency and Linearity Enhancement Using Optimized Asymmetrical Doherty Power Amplifiers,”IEEE Trans. Microw. Theory Tech., vol. 59, no. 2, pp. 425–434, 2011.
[12] L. C. Nunes, P. M. Cabral, and J. C. Pedro, “AM/PM Distortion in GaN Doherty Power Amplifiers,” inProc.IEEEMTT-SInt.Microwave Symp, pp. 1–4, 2014.
[13] L.Piazzon, R.Giofrè, R. Quaglia,V. Camarchia, M.Pirola, P.Colantonio, F. Giannini, and G. Ghione, “Effect of Load Modulation on Phase Distortion in Doherty Power  Amplifiers, ”IEEE Microw. Wireless Compon. Lett, vol. 24, no. 7, pp. 505–507, Jul. 2014.
[14] F. Abbasnezhad, M. Tayarani, A. Abrishamifar and E.J. Salmasi, “Improving the linearity characteristics of GaN power amplifiers based on second harmonic signal injection,” Journal of Electrical Engineering, University of Tabriz, Vol.51, No.4, pp 403-412, 2021.
[15] D. Jung, H. Zhao and H. Wang, "A CMOS Highly Linear Doherty Power Amplifier With Multigated Transistors," in IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 5, pp. 1883-1891, May 2019.
[16] J. M. Rubio, J. Fang, V. Camarchia, R. Quaglia, M. Pirola, and G. Ghione, “3–3.6 GHz wideband GaN Doherty power amplifier exploiting output compensation stages,” IEEE Trans. Microw. Theory Techn., vol. 60, no. 8, pp. 2543–2548, Aug. 2012.
[17] X. Fang and K.-M. M. Cheng, “Broadband, wide efficiency range,Doherty amplifier design using frequency-varying complex combining load,” in IEEE MTT-S Int. Microw. Symp. Dig., Phoenix, AZ, USA, pp. 1–4, 2015.
[18] M. N. A. Abadi, H. Golestaneh, H. Sarbishaei, and S. Boumaiza, “Doherty power amplifier with extended bandwidth and improved linearizability under carrier-aggregated signal stimuli,” IEEE Microw. Wireless Compon. Lett., vol. 26, no. 5, pp. 358–360, 2016.
[19] Mohamed, S. Boumaiza, and R. Mansour, “Doherty power amplifier with enhanced efficiency at extended operating average power levels,” IEEE Trans. Microw. Theory Tech., vol. 61, no. 12, pp. 4179–4187, 2013.
[20] S. Zhao, Z. Tang, Y. Wu, and L. Bao, “Linearity improved Doherty power amplifier using coupled-lines and a capacitive load,” IEEE Microw. Wireless Compon. Lett., vol. 21, no. 4, pp. 221–223, 2011.
[21] R. Giofrè, L. Piazzon, P. Colantonio, and F. Giannini, “A Doherty architecture with high feasibility and defined bandwidth behavior,” IEEE Trans. Microw. Theory Tech., vol. 61, no. 9, pp. 3308–3317, Sep. 2013.
[22] D. Kang, Y. Cho, D. Kim, B. Park, J. Kim, and B. Kim, “Impact of nonlinear on HBT Doherty power amplifiers,” IEEE Trans. Microw. Theory Tech., vol. 61, no. 9, pp. 3298–3307, Sep. 2013.
[23] J. Park, D. Kim, C. Yoo, W. Lee, J. Yook, and C. Hahn, “Efficiency enhancement of the Doherty amplifier for 3.5 GHz WiMAX application using class-F circuitry,” Microw. Opt. Tech. Lett., vol. 52, no. 3, pp. 570–573, Mar. 2010.
[24] Y. Lee, M. Lee, S. Kam, and Y. Jeong, “Highly linear and efficient       asymmetrical Doherty power amplifiers with adaptively bias-controlled predistortion drivers,” in IEEE MTT-S Int. Microw. Symp. Dig., Boston, MA, USA, pp. 1393–1396, 2009.

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