Transformer matching low noise amplifier with dual-mode gm enhancement technique

Dheeraj Kalra; Mayank Srivastava

doi:10.2478/jee-2025-0016

Abstract

This paper presents realization of a Low Noise Amplifier (LNA) using the transformer matching with the active and passive gm enhancement technique. This research also falls within the domain of 5G communication system receivers. Cascode structure is used to improve the gain of the circuit while mutual coupling helped in decreasing the area of realized LNA. The input and output ports have been matched for 50 Ω termination. The realized LNA has maximum gain of 14.35 dB at 6.44 GHz while the minimum value of Noise Figure (NF) is 4.43 dB. The S11 value is less than –9 dB from frequency 6.2 GHz to 7.2 GHz, i.e., having the bandwidth of 1 GHz. The realized LNA is simulated on Cadence Virtuoso software using 45 nm CMOS technology. The layout for the realized LNA is drawn occupying the area of 439 µm × 373 µm, thus 0.164 mm². Comparison of performance parameters with other references is depicted in Tab. 2.

References

X. Meng and R. Zhou, “A K-Band Ultra-Compact Gm-Boost LNA Using One Multi-Coupled Transformer in 65-nm CMOS,” IEEE Microwave and Wireless Components Letters, vol. 32, no. 8, pp. 976-978, 2022, doi: 10.1109/LMWC.2022.3155669.
Search in Google Scholar Back to article
Y. Zhang, Z. Wei, X. Tang, L. Zhang and F. Huang, “A 76.5–92.6 GHz CMOS LNA Using Two-Port kQ-Product Theory for Transformer Design,” IEEE Microwave and Wireless Components Letters, vol. 32, no. 10, pp. 1187-1190, 2022, doi: 10.1109/LMWC.2022.3170929.
Search in Google Scholar Back to article
M. Lee, X. Liu, Z. Yang, J. Jin and L. -S. Wu, “A Compact 0.2-1.6 GHz 20 MHz-Bandwidth Passive-LNA Exploiting an N-Path 1:3 Transformer,” IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 70, no. 5, pp. 1699-1703, 2023, doi: 10.1109/TCSII.2023.3257880.
Search in Google Scholar Back to article
J. Liu, S. Liu, Y. Gao, X. Liu and Z. Zhu, “A 28-/39-GHz Dual-Band CMOS LNA With Shunt-Series Transformer Feedback,” IEEE Microwave and Wireless Technology Letters, vol. 33, no. 1, pp. 51-54, 2023, doi: 10.1109/LMWC.2022.3201087.
Search in Google Scholar Back to article
H. Shao, G. Qi, P. -I. Mak and R. P. Martins, “A 1.7–3.6 GHz 20 MHz-Bandwidth Channel-Selection N-Path Passive-LNA Using a Switched-Capacitor-Transformer Network Achieving 23.5 dBm OB-IIP₃ and 3.4–4.8 dB NF,” IEEE Journal of Solid-State Circuits, vol. 57, no. 2, pp. 413-422, 2022, doi: 10.1109/JSSC.2021.3129744.
Search in Google Scholar Back to article
M. -H. Li, Y. Wang and H. Wang, “A 50–67-GHz Ultralow-Power LNA Using Double-Transformer-Coupling Technique and Self-Resonant Matching in 90-nm CMOS,” IEEE Microwave and Wireless Components Letters, vol. 32, no. 1, pp. 68-71, 2022. doi: 10.1109/LMWC.2021.3112465.
Search in Google Scholar Back to article
J. Zhang, D. Zhao and X. You, “Analysis and Design of a CMOS LNA With Transformer-Based Integrated Notch Filter for Ku-Band Satellite Communications,” IEEE Transactions on Microwave Theory and Techniques, vol. 70, no. 1, pp. 790-800, 2022, doi: 10.1109/TMTT.2021.3126858.
Search in Google Scholar Back to article
H. Chen, H. Zhu, L. Wu, W. Che and Q. Xue, “A Wideband CMOS LNA Using Transformer-Based Input Matching and Pole-Tuning Technique,” IEEE Transactions on Microwave Theory and Techniques, vol. 69, no. 7, pp. 3335-3347, 2021, doi: 10.1109/TMTT.2021.3074160.
Search in Google Scholar Back to article
Y. Hu and T. Chi, “A 27–46-GHz Low-Noise Amplifier With Dual-Resonant Input Matching and a Transformer-Based Broadband Output Network,” IEEE Microwave and Wireless Components Letters, vol. 31, no. 6, pp. 725-728, 2021, doi: 10.1109/LMWC.2021.3059592.
Search in Google Scholar Back to article
B. Bae, E. Kim, S. Kim and J. Han, “Dual-Band CMOS Low-Noise Amplifier Employing Transformer-Based Band-Switchable Load for 5G NR FR2 Applications,” IEEE Microwave and Wireless Technology Letters, vol. 33, no. 3, pp. 319-322, 2023, doi: 10.1109/LMWC.2022.3218001.
Search in Google Scholar Back to article
R. Wang, C. Li, J. Zhang, S. Yin, W. Zhu and Y. Wang, “A 18–44 GHz Low Noise Amplifier With Input Matching and Bandwidth Extension Techniques,” IEEE Microwave and Wireless Components Letters, vol. 32, no. 9, pp. 1083-1086, 2022, doi:10.1109/LMWC.2022.3163462.
Search in Google Scholar Back to article
F. Belmas, F. Hameau and J. -M. Fournier, “A Low Power Inductorless LNA With Double Gm Enhancement in 130 nm CMOS,” IEEE Journal of Solid-State Circuits, vol. 47, no. 5, pp. 1094-1103, 2012, doi: 10.1109/JSSC.2012.2185533
Search in Google Scholar Back to article
Chang, Po-Yu, and Shawn SH Hsu. “A Compact 0.1–14 GHz Ultra-Wideband Low-Noise Amplifier in 0.13 µm CMOS.” IEEE Transactions on Microwave Theory and Techniques, vol. 58, no. 10, pp. 2575-2581, 2010, doi: 10.1109/TMTT.2010.2063832
Search in Google Scholar Back to article
Cho, Wei-Han, and Shawn SH Hsu. “An Ultra-Low-Power 24 GHz Low-Noise Amplifier Using 0.13µm CMOS Technology.” IEEE microwave and wireless components letters, vol. 20, no. 12, pp. 681-683, 2010, doi: 10.1109/LMWC.2010.2085038.
Search in Google Scholar Back to article
G. Sapone, G. Palmisano. “A 3–10-GHz low-power CMOS low-noise amplifier for ultra-wideband communication.” IEEE Transactions on Microwave Theory and Techniques, vol. 59, no. 3, pp. 678-686, 2010, doi: 10.1109/TMTT.2010.2090357.
Search in Google Scholar Back to article
Hsieh, Yi-Keng, et al. “A 60 GHz broadband low-noise amplifier with variable-gain control in 65 nm CMOS.” IEEE microwave and wireless components letters, vol. 21, no.11, pp. 610-612, 2011, doi: 10.1109/LMWC.2011.2167134
Search in Google Scholar Back to article
Chang, Po-Yu, et al. “An ultra-low-power transformer-feedback 60 GHz low-noise amplifier in 90 nm CMOS.” IEEE Microwave and Wireless Components Letters vol. 22, no. 4, pp. 197-199, 2012, doi: 10.1109/LMWC.2012.2187883.
Search in Google Scholar Back to article
D. He, N. Cui, J. Fan and Z. Yu, “Design of Multiple Feedback-Based Low-Noise Amplifier With Improved Broadband Simultaneous Noise and Impedance Matching Technique,” IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 71, no. 2, pp. 582-586, 2024, doi: 10.1109/TCSII.2023.3309380.
Search in Google Scholar Back to article
L. Wang and Y. J. Cheng, “A 2–20-GHz Ultrawideband High-Gain Low-Noise Amplifier with Enhanced Stability,” IEEE Microwave and Wireless Technology Letters, vol. 34, no. 4, pp. 415-418, 2024, doi: 10.1109/LMWT.2024.3351279.
Search in Google Scholar Back to article
X. Zhang, K. Wang, Y. Yan and X. Liang, “A Compact 6–24-GHz Current-Reuse LNA With Bandwidth and Noise Enhancement,” IEEE Microwave and Wireless Technology Letters, vol. 34, no. 2, pp. 203-206, 2024, doi: 10.1109/LMWT.2023.3341145.
Search in Google Scholar Back to article

Transformer matching low noise amplifier with dual-mode gm enhancement technique

Abstract

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