A High Linear Broadband Cascode LNA Employing Common-Gate Linearity Enhancing Technology
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概要
- 論文の詳細を見る
This paper presents a low power, high linearity wideband cascode low noise amplifier (LNA) targeting the multi-standard wireless communication applications including LTE, GSM and Zigbee. Analyzing a cascode amplifier shows the common source (CS) stage is the main nonlinearity source for the LNA. The modified derivative superposition (MDS) technology is widely adopted to improve the linearity. In addition, when the operating frequency increases, the nonlinearity influence coming from the common gate (CG) increases and limits the linearity performance of the LNA. Based on the modified derivative superposition (MDS) technique, this work investigates the nonlinearity effects of the common gate (CG) stage on the cascode amplifier and employs both the derivative superposition (DS) and a terminal LC resonator on the CG stage. The nonlinearity coming from the CG stage is degraded in higher frequency and the high linear bandwidth is also increased. A cascode LNA was designed, analyzed, and implemented in the IBM 0.13-μm CMOS technology. The LNA achieved a third-order intercept point (IIP3) of +13.6 dBm, 3 dB NF and a 12 dB gain in a wide frequency from 700 MHz to 1.1 GHz.
- The Institute of Electronics, Information and Communication Engineersの論文
著者
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Khan Muhammad
Department Of Anatomy And Cell Biology School Of Medicine Chiba Unversity
-
Chen Li
Department Of Chemistry Pukyong National University
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Zhang Zhichao
Department of Electrical and Computer Engineering, University of Saskatchewan
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Dinh Anh
Department of Electrical and Computer Engineering, University of Saskatchewan
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