Design of Low Noise Amplifier for IEEE Standard 802.11b Using Cascode and Modified Cascode Techniques. (2016)

• Record Type: Journal Article
• Authors: Prameela, B.; Daniel, Asha Elizabeth
• Is Part Of: Procedia technology. Volume 25(2016)
• Page Start: 443
• Page End: 449
• Publication Date: 2016
• Subjects: hird order intercept point -- Stability -- Noise Figure -- 1dB compression point; Technology -- Congresses; Technology -- Periodicals; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Technology; Conference proceedings; Periodicals; 605
• DOI: 10.1016/j.protcy.2016.08.130
• Languages: English
• ISSNs: 2212-0173

Abstract

Abstract: This paper presents the performance comparison of two Low Noise Amplifiers (LNA), a basic Cascode and a modified cascode LNA for IEEE 802.11b protocol, WLAN. A modified cascode LNA with dual Common source transistors is designed and the performance parameters are compared with a designed basic cascode stage. The modified cascode stage has a high gain of 19.2dB and an optimized noise figure of 0.416dB at 2.4 GHz and at a supply voltage of 1.8V. The S11 is -13.74dB, S22 is -0.87dB and S12 is -43.63dB. The P1dB is -18.35dBm and the IIP3 is -8.42dBm. The LNA is designed to be stable over 2-3 GHz range. The power consumption of the circuit is 8.1mW. The modified cascode LNA is having around 10% improvement in gain and a 40% reduction in noise figure compared to the basic Cascode LNA. The simulations are done in cadence virtuoso Spectre RF using 180 nm technology.