W-Band Subharmonic Mixer
In this project, a compact size, passive, W to K band subharmonic mixer was designed fabricated and tested.
Motivation
W-band (75–110 GHz) and E-band (60–90 GHz) will play an important role in the future cellular, radar, and spaceborne communication systems. Meeting performance requirements of millimeterwave systems often requires integration of different guiding structures. This circuit supports both the silica-based post-wall waveguide and microstrip line.
Design
The mixer is based on an anti-parallel diode pair (APDP) topology operating in a subharmonic mode, thus relaxing the LO frequency requirement. APDP topology has the advantages of rejecting the fundamental mixing product, suppressing AM noise in the LO signal and higher output spectral purity due to inherent rejection of even order mixing products
Further details
can be found in this .pdf: DOI: 10.2528/pierl20012207