[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.7471/ikeee.2019.23.3.917

A Wideband Inductorless LNA for Inter-band and Intra-band Carrier Aggregation in LTE-Advanced and 5G

Gyaang, Raymond (Dept. of Information and Communication Engineering, Hanbat National University)
Lee, Dong-Ho (Dept. of Information and Communication Engineering, Hanbat National University)
Kim, Jusung (Dept. of Electronics and Control Engineering, Hanbat National University)

Publication Information

Journal of IKEEE / v.23, no.3, 2019 , pp. 917-924 More about this Journal

Abstract

This paper presents a wideband low noise amplifier (LNA) that is suitable for LTE-Advanced and 5G communication standards employing carrier aggregation (CA). The proposed LNA encompasses a common input stage and a dual output second stage with a buffer at each distinct output. This architecture is targeted to operate in both intra-band (contiguous and non-contiguous) and inter-band CA. In the proposed design, the input and second stages employ a gm enhancement with resistive feedback technique to achieve self-biasing, enhanced gain, wide bandwidth as well as reduced noise figure of the proposed LNA. An up/down power controller controls the single input single out (SISO) and single input multiple outputs (SIMO) modes of operation for inter-band and intra-band operations. The proposed LNA is designed with a 45nm CMOS technology. For SISO mode of operation, the LNA operates from 0.52GHz to 4.29GHz with a maximum power gain of 17.77dB, 2.88dB minimum noise figure and input (output) matching performance better than -10dB. For SIMO mode of operation, the proposed LNA operates from 0.52GHz to 4.44GHz with a maximum voltage gain of 18.30dB, a minimum noise figure of 2.82dB with equally good matching performance. An $IIP_3$ value of -6.7dBm is achieved in both SISO and SIMO operations. with a maximum current of 42mA consumed (LNA+buffer in SIMO operation) from a 1.2V supply.

Keywords

carrier aggregation; single input single out (SISO); single input multiple outputs (SIMO); LTE-Advanced; inter-band; intra-band; contiguous; non-contiguous;

Citations & Related Records

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