Title :
A 3mm band microstrip single-diode frequency doubler using feed-forward technique
Author :
Ming, Yu ; Zhan, Mingzhou ; Guo, Yunchuan ; Xu, Ruimin
Author_Institution :
Fundamental Sci. on EHF Lab., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A 3mm band frequency doubler design was formed by using a novel technique of feed-forward. The output fundamental frequency is reduced by employing a λ/2 feed-forward transmission line parallel with a diode, LPF at input hand and BPF at ouput hand instead of using balanced structure with more diodes. This mode of feed-forward line reduces the complexity and difficulty of matching circuit. The input signal was sent in by a WR-19 waveguide-to microstrip transition, and the output signal was sent out by a WR-10 microstrip-to waveguide transition. The simulated output power reaches maximum value of 8.5 dBm when the input power is 13dBm. The rejection of both fundamental and third harmonic is greater than 30dB.
Keywords :
circuit complexity; feedforward; frequency multipliers; low-pass filters; microstrip transitions; millimetre wave diodes; millimetre wave frequency convertors; λ/2 feedforward transmission line; LPF; WR-19 waveguide-to microstrip transition; feedforward line mode; feedforward technique; fundamental frequency; matching circuit complexity; microstrip single-diode frequency doubler; Band pass filters; Harmonic analysis; Microstrip; Microwave circuits; Power harmonic filters; Schottky diodes; Waveguide transitions;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4673-2184-6
DOI :
10.1109/ICMMT.2012.6230328
