Please wait a minute...
FITEE
Front. Inform. Technol. Electron. Eng.  2011, Vol. 12 Issue (7): 608-613    DOI: 10.1631/jzus.C1010300
    
A gain-flatness optimization solution for feedback technology of wideband low noise amplifiers
Zhen-hua Li, Bang-hong Guo, Zheng-jun Wei*, Song-hao Liu, Nan Cheng, Jin-dong Wang, Jian-jun Guo, Long Yan
Key Laboratory of Photonic Information Technology of Guangdong Higher Education Institutes, SIPSE & LQIT, South China Normal University, Guangzhou 510006, China
Download:   PDF(258KB)
Export: BibTeX | EndNote (RIS)      

Abstract  The S parameter expression of high-frequency models of the high electron mobility transistors (HEMTs) with basic feedback structure, especially the transmission gain S21, is presented and analyzed. In addition, an improved feedback structure and its theory are proposed and demonstrated, in order to obtain a better gain-flatness through the mutual interaction between the series inductor and the parallel capacitor in the feedback loop. The optimization solution for the feedback amplifier can eliminate the negative impacts on transmission gain S21 caused by things such as resonance peaks. Furthermore, our theory covers the shortage of conventional feedback amplifiers, to some extent. A wideband low-noise amplifier (LNA) with the improved feedback technology is designed based on HEMT. The transmission gain is about 20 dB with the gain variation of 1.2 dB from 100 MHz to 6 GHz. The noise figure is lower than 2.8 dB in the whole band and the amplifier is unconditionally stable.

Key words： Low-noise amplifier (LNA)      Ultra-wideband      HEMT      Feedback      Gain flatness     
Received: 28 June 2010      Published: 04 July 2011
CLC:  TN722.3  
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
Zhen-hua Li
Bang-hong Guo
Zheng-jun Wei
Song-hao Liu
Nan Cheng
Jin-dong Wang
Jian-jun Guo
Long Yan
Cite this article:

Zhen-hua Li, Bang-hong Guo, Zheng-jun Wei, Song-hao Liu, Nan Cheng, Jin-dong Wang, Jian-jun Guo, Long Yan. A gain-flatness optimization solution for feedback technology of wideband low noise amplifiers. Front. Inform. Technol. Electron. Eng., 2011, 12(7): 608-613.

URL:

http://www.zjujournals.com/xueshu/fitee/10.1631/jzus.C1010300     OR     http://www.zjujournals.com/xueshu/fitee/Y2011/V12/I7/608


A gain-flatness optimization solution for feedback technology of wideband low noise amplifiers

The S parameter expression of high-frequency models of the high electron mobility transistors (HEMTs) with basic feedback structure, especially the transmission gain S21, is presented and analyzed. In addition, an improved feedback structure and its theory are proposed and demonstrated, in order to obtain a better gain-flatness through the mutual interaction between the series inductor and the parallel capacitor in the feedback loop. The optimization solution for the feedback amplifier can eliminate the negative impacts on transmission gain S21 caused by things such as resonance peaks. Furthermore, our theory covers the shortage of conventional feedback amplifiers, to some extent. A wideband low-noise amplifier (LNA) with the improved feedback technology is designed based on HEMT. The transmission gain is about 20 dB with the gain variation of 1.2 dB from 100 MHz to 6 GHz. The noise figure is lower than 2.8 dB in the whole band and the amplifier is unconditionally stable.

关键词： Low-noise amplifier (LNA),  Ultra-wideband,  HEMT,  Feedback,  Gain flatness 
[1] Jing-lin HU, Xiu-xia SUN, Lei HE, Ri LIU, Xiong-feng DENG. Adaptive output feedback formation tracking for a class of multiagent systems with quantized input signals[J]. Front. Inform. Technol. Electron. Eng., 2018, 19(9): 1086-1097.
[2] Ji-ying XIANG. Non-ideal space division multiple access and its application   [J]. Front. Inform. Technol. Electron. Eng., 2018, 19(3): 357-366.
[3] Ying-hui ZHONG , Shu-xiang SUN , Wen-bin WONG , Hai-li WANG , Xiao-ming LIU , Zhi-yong DUAN, Peng DING , Zhi JIN. Two-step gate-recess process combining selective wet-etching and digital wet-etching for InAlAs/InGaAs InP-based HEMTs[J]. Front. Inform. Technol. Electron. Eng., 2017, 18(8): 1180-1185.
[4] Chao GUO, Zeng-xuan HOU, You-zhi SHI, Jun XU, Dan-dan YU . A virtual 3D interactive painting method for Chinese calligraphy and painting based on real-time force feedback technology[J]. Front. Inform. Technol. Electron. Eng., 2017, 18(11): 1843-1854.
[5] Parul DAWAR, N. S. RAGHAVA , Asok DE. Miniaturized UWB multi-resonance patch antenna loaded with novel modified H-shape SRR metamaterial for microspacecraft applications[J]. Front. Inform. Technol. Electron. Eng., 2017, 18(11): 1883-1891.
[6] Jing WANG, Lan-fen LIN, Heng ZHANG, Jia-qi TU, Peng-hua YU . A novel confidence estimation method for heterogeneous implicit feedback[J]. Front. Inform. Technol. Electron. Eng., 2017, 18(11): 1817-1827.
[7] Xiong-bin PENG, Guo-fang GONG , Hua-yong YANG , Hai-yang LOU , Wei-qiang WU, Tong LIU. Quantitative feedback controller design and test for an electro-hydraulic position control system in a large-scale reflecting telescope[J]. Front. Inform. Technol. Electron. Eng., 2017, 18(10): 1624-1634.
[8] Xing-ru Peng, Wei Zhang, Yan-yan Liu. A pipelined Reed-Solomon decoder based on a modified step-by-step algorithm[J]. Front. Inform. Technol. Electron. Eng., 2016, 17(9): 954-961.
[9] Xiao-xiong Zhang, Bing-feng Ge, Yue-jin Tan. A consensus model for group decision making under interval type-2 fuzzy environment[J]. Front. Inform. Technol. Electron. Eng., 2016, 17(3): 237-249.
[10] Mei-qin Liu, Hai-yang Chen, Sen-lin Zhang. H∞ reference tracking control design for a class of nonlinear systems with time-varying delays[J]. Front. Inform. Technol. Electron. Eng., 2015, 16(9): 759-768.
[11] Ming-jun Ma, Zhong-he Jin, Hui-jie Zhu. A combined modulated feedback and temperature compensation approach to improve bias drift of a closed-loop MEMS capacitive accelerometer[J]. Front. Inform. Technol. Electron. Eng., 2015, 16(6): 497-510.
[12] Li-li Li, Ying Liu, Qi-guo Yao. Robust synchronization of chaotic systems using sliding mode and feedback control[J]. Front. Inform. Technol. Electron. Eng., 2014, 15(3): 211-222.
[13] Bo Jin, Ya-guang Zhu, Wei Li, De-sheng Zhang, Lu-lu Zhang, Fei-fei Chen. A differential control method for the proportional directional valve[J]. Front. Inform. Technol. Electron. Eng., 2014, 15(10): 892-902.
[14] Jian-cheng Fang, Ke Sun. Composite disturbance attenuation based saturated control for maintenance of low Earth orbit (LEO) formations[J]. Front. Inform. Technol. Electron. Eng., 2012, 13(5): 328-338.
[15] Hai Huang, Hong Liu, Nan Li, Li Jiang, Da-peng Yang, Lei Wan, Yong-jie Pang, Gerd Hirzinger. An anthropomorphic controlled hand prosthesis system[J]. Front. Inform. Technol. Electron. Eng., 2012, 13(10): 769-780.