论文信息 - LNA topologies for RX carrier aggregation

LNA topologies for RX carrier aggregation

Performance of the low-noise amplifier (LNA) determines the sensitivity, impedance matching (reflection), and other critical parameters of the receiver. Carrier aggregation (CA) in LTE-Advanced and upcoming 5G requires the LNA to support multiple-outputs without degrading its dynamic range (DR) performance and thus requires the architectural changes. In this paper, several LNA topologies are presented which can support RX carrier aggregation. Each topology is meticulously characterized in its performance. Simulation results reveal that the cascode divert-switch and cascode-shutoff in common-source configuration shows comparable performance to the legacy operation.

Sang-Hun Lee | Jusung Kim | Sungchan Kim | Keunkwan Ryu

[1] Borivoje Nikolic,et al. A passive-mixer-first receiver with LO leakage suppression, 2.6dB NF, >15dBm wide-band IIP3, 66dB IRR supporting non-contiguous carrier aggregation , 2015, 2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC).

[2] José Silva-Martínez,et al. Low-Power, Low-Cost CMOS Direct-Conversion Receiver Front-End for Multistandard Applications , 2013, IEEE Journal of Solid-State Circuits.

[3] Behzad Razavi,et al. An RF Receiver for Intra-Band Carrier Aggregation , 2015, IEEE Journal of Solid-State Circuits.

[4] Jusung Kim,et al. Wideband Common-Gate CMOS LNA Employing Dual Negative Feedback With Simultaneous Noise, Gain, and Bandwidth Optimization , 2010, IEEE Transactions on Microwave Theory and Techniques.