Frequency doubler;
transformer balun;
SiGe;
bandwidth;
DESIGN;
GAIN;
D O I:
10.1109/LED.2016.2611535
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
A compact balanced frequency doubler with more than 35 dB odd-harmonic rejection and fractional bandwidth of 73% is presented in this letter. Wide bandwidth and high odd-harmonic suppression is achieved by adopting a new technique for the transformer balun design, resulting in a very low magnitude imbalance of 0.13 dB and a phase imbalance of 0.4 degrees over 7-15 GHz. The balun performance is improved by offsetting the radius of the primary and secondary coils, which reduces the parasitic coupling capacitance. The input and output frequency ranges for the doubler are 7-15 GHz and 14-30 GHz respectively. The circuit was fabricated in 0.13-mu m SiGe technology. The chip size is 0.6 mm x 0.4 mm.
机构:
City Univ Hong Kong, Dept Elect Engn, State Key Lab Millimeter Waves, Hong Kong, Hong Kong, Peoples R ChinaMacquarie Univ, Dept Engn, Sydney, NSW 2109, Australia
机构:
City Univ Hong Kong, Dept Elect Engn, State Key Lab Millimeter Waves, Hong Kong, Hong Kong, Peoples R ChinaMacquarie Univ, Dept Engn, Sydney, NSW 2109, Australia