Abstract
A sub-harmonic mixer is presented with micro-strip at 3 mm wave length.The key device of the mixer is a pair of GaAs beam lead anti-parallel Schottky diode(type MS8251).According to the request of the local oscillator(LO),radio frequency(RF) and intermediate frequency(IF) networks of sub-harmonic mixer,the large signal impedance of anti-parallel diode pair,which is stimulated with the LO signal alone,is simulated by harmonic balance method firstly.The LO network is designed based on the result above.Then the small signal impedance of anti-parallel diode pair with LO stimulation is simulated and the RF network is designed.A 3 mm waveguide to micro-strip translation is also designed in the paper,and the sub-harmonic mixer is fabricated on the RF-Duroid 5880 with 0.127 mm thick and dielectric constant er of 2.22.According to the measurement result,the conversion loss which is lower than 15 dB is achieved with the RF ranged from 90 GHz to 95 GHz and the LO frequency of 46.3 GHz.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
