Yi-Lin YANG, Bo ZHANG, Dong-Feng JI, Yi-Wei WANG, Xiang-Yang ZHAO, Yong FAN. A wideband terahertz planar Schottky diode fourth-harmonic mixer with low LO power requirement[J]. Journal of Infrared and Millimeter Waves, 2020, 39(5): 540
- Journal of Infrared and Millimeter Waves
- Vol. 39, Issue 5, 540 (2020)
Fig. 1. Configuration of the proposed fourth-harmonic mixer
Fig. 2. Cross section view and parasitic parameters of the planar Schottky diode
Fig. 3. (a) The 3D EM model of the planar Schottky diode (b) The picture of the Schottky diode applied manufactured by CETC-13
Fig. 4. (a) Simplified model of the diode junction (b) Equivalent circuit of the Schottky diode
Fig. 5. Dimensions of the Schottky diode applied in the proposed fourth-harmonic mixer
Fig. 6. (a) Optimum conversion loss of the mixer with different Cj0 , (b) Optimum LO power of the mixer with different Cj0
Fig. 7. (a) Topology and simulation results of the wide stopband and high rejection LO low pass filter
Fig. 8. Simulated performances of the proposed fourth-harmonic mixer with different LO power (a) SSB conversion loss, (a) DSB noise temperature
Fig. 9. Inside photograph of the fourth-harmonic mixer
Fig. 10. Test setup for conversion loss of the fourth-harmonic mixer
Fig. 11. Test setup for noise temperature of the fourth-harmonic mixer
Fig. 12. Comparison between simulated conversion loss and measured results of the proposed mixer with fixed IF frequency of 1 GHz and optimum LO power of 7 mW
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Table 1. Summary of the performances of the reported fourth-harmonic mixer
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