Bin NIU, Jun QIAN, Dao-Yu FAN, Yuan-Qing WANG, Liang MEI, Jun-Jie DAI, Ming ZHOU, Tang-Sheng CHEN, Tangsheng Chen. 664 GHz sub harmonic mixer based on “T” anode GaAs SBD membrane circuit[J]. Journal of Infrared and Millimeter Waves, 2021, 40(5): 634
- Journal of Infrared and Millimeter Waves
- Vol. 40, Issue 5, 634 (2021)
Fig. 1. “T” shape anode of GaAs SBD: (a) schematic picture with Cjp and Cj0; (b) SEM picture of 0.5 μm anode metal section.
Fig. 2. Characteristics of “T” shape anode GaAs SBD with different anode size: (a)Cj0, Cjp and 1/Rs versus anode area; (b)ft versus anode diameter.
Fig. 3. GaAs membrane sub harmonic mixer design: (a) 3D design diagram; (b) microscope picture of the finished mixer.
Fig. 4. Pictures of 664GHz receiver (a) and measurement setup (b)
Fig. 5. Measured and simulated DSB conversion loss of the membrane mixer
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Table 1. Epitaxy layer structure of GaAs SBD membrane circuit
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