650 GHz Subharmonic Waveguide Mixer
Ville Möttönen, Petri Piironen, Antti Räisänen, Jian Zhang
650 GHz subharmonic waveguide mixer is a part of KASIMIR (Key Advanced Structure Investigations for mm- and sub-mm-wave Integrated Receivers), an international research project financed by ESA, ESTEC, and coordinated by DaimlerChrysler Aerospace, Dornier Satellitensysteme GmbH.
Dimensions of Mixer Main Parts:
RF waveguide
LO waveguide
Microstrip channel
Quartz substrate
Diagonal horn |
440 um * 220 um
860 um * 430 um
120 um * 100 um
110 um * 45 um
l = 11,8 mm, a = 1,5 mm |
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mixer layout |
Diode Key Information:
- Two antiparallel Schottky diodes in a single chip
- Chip size ~ 110 um 195 um 20 um
- Anode diameter d = 0.8 um
- Epitaxial layer doping density
- Epitaxial layer thickness
- Series resistance R ~ 16 ohm
- Zero bias junction capacitance
- Reverse saturation current
- Ideality factor
|
diode chip |
220 GHz Scaled Model:
- Similar structure (without the diagonal horn antenna)
- Similar diode chip
- Measured results:
- Conversion loss L = 9.2 dB
- Noise temperature T = 3520 K (SSB)
- LO power 3.5 mW
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diode chip |
Page content by: | Last updated: 25.10.2017.
