Title :
Balance-Compensated Asymmetric Marchand Baluns on Silicon for MMICs
Author :
Geliang Yang ; Zhigong Wang ; Zhiqun Li ; Qin Li ; Faen Liu
Author_Institution :
Eng. Res. Center of RF-ICs & RF-Syst., Nanjing, China
Abstract :
The balance compensating techniques for asymmetric Marchand balun are presented in this letter. The amplitude and phase difference are characterized explicitly by S21 and S31, from which the factors responsible for the balance compensating are determined. Finally, two asymmetric Marchand baluns, which have normal and enhanced balance compensation, respectively, are designed and fabricated in a 0.18 μm CMOS technology for demonstration. The simulation and measurement results show that the proposed balance compensating techniques are valid in a very wide frequency range up to millimeter-wave (MMW) band.
Keywords :
CMOS integrated circuits; MMIC; baluns; CMOS technology; MMICs; MMW band; asymmetric Marchand baluns; balance compensating techniques; enhanced balance compensation; millimeter-wave band; normal balance compensation; phase difference; size 0.18 mum; CMOS integrated circuits; CMOS technology; Impedance matching; Insertion loss; Layout; Loss measurement; MMICs; Asymmetric; CMOS; balance compensation; balun; millimeter-wave;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2014.2313719
