A 5G mm-wave compact voltage-controlled oscillator in 0.25 µm pHEMT technology

Abdelhafid Es-saqy (Sidi Mohamed Ben Abdellah University)
Maryam Abata (Sidi Mohamed Ben Abdellah University)
Mahmoud Mehdi (Lebanese University)
Mohammed Fattah (My Ismail University)
Said Mazer (Sidi Mohamed Ben Abdellah University)
Moulhime El Bekkali (Sidi Mohamed Ben Abdellah University)
Catherine Algani (Gustave Eiffel University)

International Journal of Electrical and Computer Engineering
Vol 11, No 2: April 2021

A 5G mm-wave monolithic microwave integrated circuit (MMIC) voltage-controlled oscillator (VCO) is presented in this paper. It is designed on GaAs substrate and with 0.25 µm-pHEMT technology from UMS foundry and it is based on pHEMT varactors in order to achieve a very small chip size. A 0dBm-output power over the entire tuning range from 27.67 GHz to 28.91 GHz, a phase noise of -96.274 dBc/Hz and -116.24 dBc/Hz at 1 and 10 MHz offset frequency from the carrier respectively are obtained on simulation. A power consumption of 111 mW is obtained for a chip size of 0.268 mm2. According to our knowledge, this circuit occupies the smallest surface area compared to pHEMTs oscillators published in the literature.