volume | PIER Journals

Abstract

An antenna consisting of a full-wavelength dipole on a GaAs membrane covered by a frequency-selective surface is proposed for improved output power from photomixers used as terahertz (THz) sources. The antenna structure reduces the vertical dimension of a typical photomixer antenna using a substrate lens while still exhibiting high total efficiency and high directivity. The resulting antenna after optimization produced an input resistance of 3870 Ω and a radiation efficiency of 60%, corresponding to a total efficiency of approximately 48.3% and a maximum directivity of 20.2 dBi at the resonance frequency of 1.03 THz. The proposed antenna is expected to be a promising alternative THz photomixer design.

1. Zhong, , S., Y. Shen, H. Shen, and Y. Huang, "FDTD study of a novel terahertz emitter with electrical field enhancement using surface plasmon resonance," PIERS Online,, Vol. 6, No. 2, 153-156, 2010.
doi:10.2529/PIERS090906095006

2. Lucyszyn, , S., Y. Zhou, and , "Engineering approach to modeling frequency dispersion within normal metals at room temperature for THz applications," Progress In Electromagnetics Research,, Vol. 101, 257-275, , 2010.
doi:10.2528/PIER09121506

3. Zhou, , H., F. Ding, Y. Jin, and S. He, , "Terahertz metamaterial modulators based on absorption ," Progress In Electromagnetics Research, Vol. 119, 449-460, 2011.
doi:10.2528/PIER11061304

4. Andres-Garcia, , B., L. E. Garcia-Munoz, and D. Segovia-Vargas, "Ultrawideband antenna excited by a photomixer for terahertz band," Progress In Electromagnetics Research,, Vol. 114, 1-15, 2011..

5. Winnewisser, , G., , "Spectroscopy in the terahertz region," Vibrat. Spectrosc., , Vol. 8, 241-253, , 1995..
doi:10.1016/0924-2031(94)00053-J

6. Siegel, , P. H., "Terahertz technology," IEEE Trans. Microw Theory Tech.,, Vol. 50, No. 3, , 910-928, , Mar. 2002..
doi:10.1109/22.989974

7. Cai, , M., E. P. Li, and , "A novel terahertz sensing device comprising of a parabolic re°ective surface and a bi-conical structure," Progress In Electromagnetics Research, , Vol. 97, 61-73, , 2009..
doi:10.2528/PIER09090902

8. Hu, , B. B., M. C. Nuss, and , "Imaging with terahertz waves," Opt. Lett.,, Vol. 20, No. 16, 1716-1718, , Aug. 1995..
doi:10.1364/OL.20.001716

9. Shen, , Y. C., T. Lo, P. F. Taday, B. E. Cole, W. R. Tribe, and M. C. Kemp, "Detection and identification of explosives using terahertz pulsed spectroscopic imaging," Appl. Phys. Lett.,, Vol. 86, , 241116, , 2005..
doi:10.1063/1.1946192

10. Tonouchi, , M., , "Cutting-edge terahertz technology," Nature Photon.,, Vol. 1, , 97-105, , 2007..
doi:10.1038/nphoton.2007.3

11. Williams, , B. S., "Terahertz quantum-cascade lasers," Nature Photon.,, Vol. 1, , 517-525, Sep. 2007.
doi:10.1038/nphoton.2007.166

12. Maineult, , W., P. Gellie, A. Andronico, P. Filloux, G. Leo, C. Sirtori, S. Barbieri, E. Peytavit, T. Akalin, J.-F. Lampin, H. E. Beere, and D., "Metal-metal terahertz quantum cascade laser with micro-transverse-electromagnetic-horn antenna," Appl. Phys. Lett.,, Vol. 93, No. 18, , 183508, , 2008.
doi:10.1063/1.3013819

13. Kumar, , S., Q. Hu, and J. L. Reno, "186K operation of terahertz quantum-cascade lasers based on a diagonal design," Appl. Phys. Lett., , Vol. 94, , 131105, , 2009.
doi:10.1063/1.3114418

14. Preu, , S., G. H. DÄohler, S. Malzer, L. J. Wang, and A. C. Gossard, "Tunable, continuous-wave terahertz photomixer sources and applications ," J. Appl. Phys., , Vol. 109, 061301, 2011.
doi:10.1063/1.3552291

15. Brown, , E. R., , "Advancements in photomixing and photoconductive switching for THz spectroscopy and imaging," Proc. SPIE7938, 793802, , 2011.
doi:10.1117/12.881069

16. Plinski, , E. F., , "Terahertz photomixer," Technical Sciences,, Vol. 58, No. 4, 2010..

17. Gregory, , I. S., W. R, Tribe, B. E. Cole, M. J. Evans, E. H. Linfield, A. G. Davies, and M. Missous, "Resonant dipole antennas for continuous-wave terahertz photomixers," Appl. Phys. Lett., Vol. 85, 1622-1624, 2004..
doi:10.1063/1.1789244

18. Saeedkia, , D., S. Safavi-Naeini, and , "Terahertz photonics: Optoelectronic technique for generation and detection of terahertz waves," IEEE J. Lightw. Technol., Vol. 26, No. 15, 2409-2423, Aug. 2008..
doi:10.1109/JLT.2008.927614

19. Huang, , Y., N. Khiabani, D. Li, and Y. Shen, "Terahertz photoconductive antenna e±ciency," Int. Workshop on Antenna Tech.,, 152-156, Mar. 2011..
doi:10.1109/IWAT.2011.5752384

20. Tanoto, , H., J. H. Teng, Q. Y. Wu, M. Sun, Z. N. Chen, S. A. Maier, B. Wang, C. C. Chum, G. Y. Si, A. J. Danner, and S. J. Chua, "Greatly enhanced continuous-wave terahertz emission by nano-electrodes in a photoconductive photomixer," Nature Photon.,, Vol. 6, 121-126, Feb. 2012.
doi:10.1038/nphoton.2011.322

21. Balanis, , C. A., , Antenna Theory: Analysis and Design,, 60-61, Wiley, , New York, , 1997..

22. Nguyen, T. K., H. Han, and I. Park, "Numerical study of a full-wavelength dipole antenna on a GaAs membrane structure at terahertz frequency," J. Infrared Milli. Terahz Waves, , Vol. 32, No. 5, 763-777, , 5, 763{7.

23. Saeedkia, , D., R. R. Mansour, and S. Safavi-Naeini, "A submilliwatt terahertz high-temperature superconductive photomixer ar ray source: Analysis and design," IEEE Trans. on Appl. Super-conductivity,, Vol. 15, No. 3, 3868-3873, Sep. 2005..
doi:10.1109/TASC.2005.852908

24. Rutledge D. B. , D. B., M. S. Muha, and , "Imaging antenna arrays," IEEE Trans. Antennas Propagat., Vol. 30, No. 4, 535-540, Jul. 1982.
doi:10.1109/TAP.1982.1142856

25. Nguyen, T. K., , T. K., H. Han, and I. Park, , "Full-wavelength dipole antenna on a hybrid GaAs membrane and Si lens for a terahertz photomixer," J. Infrared Milli. Terahz Waves, Vol. 33, 333-347, 2012.
doi:10.1007/s10762-012-9876-z

26. "CST Microwave Studio, CST GmbH, ,", 2011.
doi: http://www.cst.com.

27. Alexopoulos, , N. G., P. B. Katehi, and D. B. Rutledge, , "Substrate optimization for integrated circuit antennas," IEEE Trans. Microw. Theory Tech., Vol. 31, No. 7, 550-557, Jul. 1983.
doi:10.1109/TMTT.1983.1131544

Dr. Truong Khang Nguyen

Dr. Thi Anh Ho

Prof. Ikmo Park

Dr. Haewook Han