Design and Analysis of a Novel 24 GHz Up-Conversion Mixer with Improved Derivative Super-Position Linearizer Technique for 5G Applications

Sensors

Amir Haider¹  Tahesin Samira Delwar²  Manas Ranjan Biswal²  Jee-Youl Ryu²  Prangyadarsini Behera²  Abrar Siddique² 

[1] Department of Intelligent Mechatronics Engineering, Sejong University, Seoul 05006, Korea;Department of Smart Robot Convergence and Application Engineering, Pukyong National University, Busan 48513, Korea;

关键词: 5G;    wireless communication;    transmitter;    up-conversion mixer;    Improved Derivative Super-Position;   

DOI  :  10.3390/s21186118

来源: DOAJ

【 摘 要 】

A 24 GHz high linear, high-gain up-conversion mixer is realized for fifth-generation (5G) applications in the 65 nm CMOS process. The mixer’s linearity is increased by applying an Improved Derivative Super-Position (I-DS) technique cascaded between the mixer’s transconductance and switching stage. The high gain and stability of amplifiers in the transconductance stage of the mixer are achieved using novel tunable capacitive cross-coupled common source (TCC-CS) transistors. Using the I-DS, the third-order non-linear coefficient of current is closed to zero, enhancing the linearity. Additionally, a TCC-CS, which is realized by varactors, neutralizes the gate-to-drain parasitic capacitance (C_gd) of transistors in the transconductance stage of the mixer and contributes to the improvement of the gain and stability of the mixer. The measured 1 dB compression point OP₁dB of the designed mixer is 4.1 dBm and IP₁dB is 0.67 dBm at 24 GHz. The conversion gain of 4.1 dB at 24 GHz and 3.2 ± 0.9 dB, from 20 to 30 GHz is achieved in the designed mixer. Furthermore, a noise figure of 3.8 dB is noted at 24 GHz. The power consumption of the mixer is 4.9 mW at 1.2 V, while the chip area of the designed mixer is 0.4 mm${}^2$.

【 授权许可】

Unknown