This paper presents the design and fabrication of a feed horn antenna integrated fix-tuned 380 GHz sub-harmonically pumped mixer, based on planar GaAs air-bridged Schottky anti-parallel diode from Rutherford Appleton Laboratory. The diode was designed and fabricated by millimeter technology group, Rutherford Appleton Laboratory, UK. The mixer's circuit configuration and cavity block are realized by joint simulation of ANSOFT's three-dimensional full-wave electromagnetic simulation software HFSS and AGILENT's circuit simulation software ADS. The mixer circuit is fully integrated with the microstrip circuit and the flip-chipped diode on suspended 50 μm thick quartz substrate, and whole fixed-tuned mixer cavity block is integrated with RF feed horn antenna, using least parts to minimize the cost, as well as maximizing its potential convenience for circuit and block manufacture. The simulation and test investigation have good agreement and show state-of-the-art results. The experimental results show that over an IF band of 2.5-3.5 GHz, the mixer's conversion loss is lower than 10 dB with mean value 9 dB, and the mixer's equivalent noise temperature is less than 3000K with mean value 2000 K. Besides, mixer equivalent noise temperature curve's variation trends show good consistency with conversion loss curve.
2. Huang, Y., L.-S. Wu, M. Tang, and J. Mao, "High-performance resonator based on single-walled carbon nanotube bundle for THz application," Journal of Electromagnetic Waves and Applications, Vol. 28, No. 3, 316-325, 2014.
doi:10.1080/09205071.2013.869484
3. Wei, H.-C., C.-L. Hsiao, and R.-M. Weng, "A broadband low power high isolation double-balanced subharmonic mixer for 4G applications," Progress In Electromagnetics Research, Vol. 138, 143-155, 2013.
doi:10.2528/PIER13012509
4. Zhang, B., Y. Fan, Z. Chen, X. F. Yang, and F. Q. Zhong, "An improved 110-130-GHZ fix-tuned subharmonic mixer with compact microstrip resonant cell structure," Journal of Electromagnetic Waves and Applications, Vol. 25, No. 2-3, 411-420, 2011.
doi:10.1163/156939311794362830
5. Hotopan, G. R., S. Ver-Hoeye, C. Vazquez-Antuna, A. Hadarig, R. Camblor-Diaz, M. Fernandez-Garcia, and F. Las Heras Andres, "Millimeter wave subharmonic mixer implementation using graphene film coating," Progress In Electromagnetics Research, Vol. 140, 781-794, 2013.
doi:10.2528/PIER13042408
6. Burch, D. E., D. A. Gryvnak, and R. R. Patty, "Absorption of infrared radiation by CO2 and H2O experimental technologies," Journal of Opt. Soc. Amer., Vol. 57, 885-895, 1967.
doi:10.1364/JOSA.57.000885
7. Yuan, T., et al., "Terahertz domain spectroscopy of the atmosphere with different humidity," Proc. SPIE., Vol. 5070, 28-37, 2003.
doi:10.1117/12.504295
8. Crowe, T. W., W. L. Bishop, and D. W. Porterfield, "Opening the terahertz window with integrated diode circuits," IEEE Journal of Solid-State Circuits, Vol. 40, No. 10, 2104-2110, 2005.
doi:10.1109/JSSC.2005.854599
9. Carlson, E. R., M.V. Schnider, and T. F. McMaster, "Subharmonically pumped millimeter-wave mixers," IEEE Trans. Microwave Theory Tech., Vol. 26, No. 10, 706-715, 1978.
doi:10.1109/TMTT.1978.1129474
10. Thomas, B., A. Maestrini, and G. Beaudin, "A low-noise fixed-tuned 300{360-GHz sub-harmonic mixer using planar Schottky diodes," IEEE Microwave and Wireless Components Letters, Vol. 15, No. 12, 865-867, 2005.
doi:10.1109/LMWC.2005.859992
11. Cohn, M., J. E. Degenford, and B. A. Newman, "Harmonic mixing with an antiparallel diode pair," IEEE Trans. Microwave Theory Tech., Vol. 23, No. 8, 667-673, 1975.
doi:10.1109/TMTT.1975.1128646
12. Schneider, M. V. and W. W. Snell, "Harmonically pumped stripline down-converter," 4th European Microwave Conference, 599-603, 1974.
13. Marsh, S., B. Alderman, D. Matheson, and P. de Maagt, "Design of low-cost 183 GHz subharmonic mixers for commercial applications," IET Circuits Devices Syst., Vol. 1, No. 1, 1-6, 2007.
doi:10.1049/iet-cds:20060212
14. Hesler, J., W. R. Hall, T.W. Crowe, R. M. Weikle, B. S. Deaver, Jr., R. F. Bradley, and S. K. Pan, "Fixed-tuned submillimeter wavelength waveguide mixers using planar Schottky-barrier diodes," IEEE Trans. on Microwave Theory Tech., Vol. 45, No. 5, 653-658, 1997.
doi:10.1109/22.575581
15. Poterfield, D., J. Hesler, T. W. Crowe, W. Bishop, and D. Woolard, "Integrated terahertz transmit/receive modules," Proc. 33rd Euro. Microwave Conf., 1319-1322, Munich, Germany, 2003.
doi:10.1109/EUMC.2003.177730
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