A fully integrated dual-band CMOS LNA for IEEE802.16a

A new dual-band low-noise amplifier (LNA) operating at L1/E1 1.575 GHz and L5/E5 1.192 GHz center frequencies for global navigation satellite system receivers is proposed. A doubled common-source amplifier architecture is used with a single input, shared gate inductor, and two outputs to split the RF signal into separate RX channels. The main advantage of the proposed circuit is compatibility with widespread multi-band antennas with single RF connectors dedicated to high-precision applications, as well as the possibility to use cheap SAW filters with small footprints to build low-cost, highly accurate GNSS receiver modules. The input and both outputs are well matched to 50 Ω impedance. The LNA is designed with a 110 nm CMOS process, consuming 6.13 mA current from a 1.5 V supply. The measured noise figures and voltage gains of the dual-band LNA are, respectively, NF1/NF5 = 3.23/3.5 dB and G1/G5 = 21.22/18.2 dB in the band of interest for each channel. The measured impedance matching at the input (S11) and output (S22) of the dual-band low-frequency amplifier is as follows: S11_L1 = −23.89, S11_L5 = −8.42, S22_L1 = −12.65, S22_L5 = −15.08. The one-decibel compression points are L1 band PdB1 = −37.71 dBm and L5 band PdB5 = −34.72 dBm, respectively.

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Presenting Systematic Design for UWB Low Noise Amplifier Circuits

Rezazadeh¹,

Amiri

Roodaki³

et al. 2012

MAS

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A systematic approach to CMOS Low Noise Amplifier design is presented. This approach uses an input impedance matching technique based on LC Ladder filters which will provide suitable input matching in any arbitrary band (S11<-10dB), also S22 is about -10 dB in average. Using cascode structure, maximum power gain about 25 dB is achievable. Noise level is less than 3 dB over the full band of UWB. Power dissipation of this amplifier is only 8.5 mw and operates with 0.85 v supply voltage while 0.13 µm CMOS technology is used

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A fully integrated dual-band CMOS LNA for IEEE802.16a

Cited by 3 publications

References 5 publications

Systematic approach to ultra-wideband Low Noise Amplifier design in CMOS technology

Systematic approach to ultra-wideband Low Noise Amplifier design in CMOS technology

Dual-Band Low-Noise Amplifier for GNSS Applications

Presenting Systematic Design for UWB Low Noise Amplifier Circuits

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