A Differential LNA Employing Feedforward and Complementary Techniques for Integration of 5G Sub-6 GHz With Legacy Communication Standards
Navid Habibpour Moghaddam
Department of Electrical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
Search for more papers by this authorMohammad Hossein Maghami
Faculty of Electrical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran
Search for more papers by this authorCorresponding Author
Mohammad Bod
Faculty of Electrical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran
Correspondence:
Mohammad Bod ([email protected])
Search for more papers by this authorFatemeh Mohammadi
Faculty of Electrical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran
Search for more papers by this authorNavid Habibpour Moghaddam
Department of Electrical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
Search for more papers by this authorMohammad Hossein Maghami
Faculty of Electrical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran
Search for more papers by this authorCorresponding Author
Mohammad Bod
Faculty of Electrical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran
Correspondence:
Mohammad Bod ([email protected])
Search for more papers by this authorFatemeh Mohammadi
Faculty of Electrical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran
Search for more papers by this authorFunding: The authors received no specific funding for this work.
ABSTRACT
This paper proposes a highly linear, wideband low noise amplifier (WBLNA) with differential structure in 0.13-μm CMOS Technology. The proposed WBLNA is designed for a 2- to 6-GHz band that covers multiple standards, such as Bluetooth, Wi-Fi, 3G, 4G, and 5G sub-6-GHz band. The presented circuit utilizes a well combination of recently published techniques, including inductive source degeneration, inductively series-peaking common source stage, cross-coupled topology, distributed structure, and noise cancelation methods. Moreover, the proposed amplifier utilizes feedforward and complementary techniques to attenuate both second- and third-order nonlinearity effects and improve the nonlinearity favorably. According to the post-layout simulation results, the proposed LNA achieves input return loss (S11) lower than −10 dB, input third-order intercept point (IIP3) in between 13.42 and 13.48 dBm, flat noise figure (NF) of 3.4 ± 0.2, and flat power gain (S21) of 12.93 ± 0.2 dB over 2- to 6-GHz frequency range. Furthermore, the proposed circuit meets the average input second-order intercept point (IIP2) of 64.5 dBm at 6 GHz and figure of merit (FOM) of 30.05 GHz while drawing 16.73 mA from the 1.2 V power supply.
Open Research
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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