TY - JOUR
T1 - Compact doubler with simple harmonic suppression and gain-compensation functions
AU - Lai, Yu Ann
AU - Chen, Chun Nien
AU - Wang, Yeong Her
N1 - Funding Information:
Manuscript received June 01, 2010; revised January 03, 2011; accepted April 12, 2011. Date of publication June 09, 2011; date of current version July 07, 2011. This work was supported in part by the Chip Implementation Center of National Applied Research Laboratories and National Science Council of Taiwan under contracts NSC95-2221-E-006-428-MY3 and 982C12.
PY - 2011/7
Y1 - 2011/7
N2 - A compact double-balanced frequency doubler with simple harmonic suppression and gain compensation functions is proposed. In order to enhance the suppression of fundamental and third harmonics of the doubler, the band-reject filter (BRF) is integrated into the Marchand balun, which also provides the ground for the coupler line of the balun. In addition, the simple bias circuit is applied to solve the gain variation, which improves the conversion efficiency at low input power. This doubler exhibits 11.7-16 dB conversion loss, while the fundamental suppression is better than 22.5 dB from 25 to 37 GHz. By controlling the voltage from 0 to 0.6 V, the doubler can increase the gain and provide better operational bandwidth.
AB - A compact double-balanced frequency doubler with simple harmonic suppression and gain compensation functions is proposed. In order to enhance the suppression of fundamental and third harmonics of the doubler, the band-reject filter (BRF) is integrated into the Marchand balun, which also provides the ground for the coupler line of the balun. In addition, the simple bias circuit is applied to solve the gain variation, which improves the conversion efficiency at low input power. This doubler exhibits 11.7-16 dB conversion loss, while the fundamental suppression is better than 22.5 dB from 25 to 37 GHz. By controlling the voltage from 0 to 0.6 V, the doubler can increase the gain and provide better operational bandwidth.
UR - http://www.scopus.com/inward/record.url?scp=79960126527&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960126527&partnerID=8YFLogxK
U2 - 10.1109/LMWC.2011.2152383
DO - 10.1109/LMWC.2011.2152383
M3 - Article
AN - SCOPUS:79960126527
SN - 1531-1309
VL - 21
SP - 371
EP - 373
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
IS - 7
M1 - 5871699
ER -