Numerical study of high impedance T-match antennas for terahertz photomixers

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• 作者：Lars Juul (1)
  Martin Mikulics (2)
  Mauro F. Pereira (3)
  Michel Marso (1)
  
  1. Research Unit for Engineering Science ; Universit茅 du Luxembourg ; 1359 ; Luxembourg ; Luxembourg
  2. Peter Gr眉nberg Institute (PGI-9) ; Forschungszentrum J眉lich ; 52425 ; J眉lich ; Germany
  3. Materials and Engineering Research Institute ; Sheffield Hallam University ; Sheffield ; S1 1WB ; UK
  
• 关键词：Photoconductor impedance ; Terahertz photomixer ; Numerical simulation ; T ; match antenna
• 刊名：Optical and Quantum Electronics
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：47
• 期：4
• 页码：913-922
• 全文大小：810 KB
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• 刊物主题：Optics, Optoelectronics, Plasmonics and Optical Devices; Electrical Engineering; Characterization and Evaluation of Materials; Computer Communication Networks;
• 出版者：Springer US
• ISSN：1572-817X

文摘

This paper outlines an efficient numerical method to design terahertz photomixers. The simulations are benchmarked using measured power levels from results published in the literature. Next, the method is applied to two new photomixer designs based on the high impedance T-match antenna with bias supply DC-blocking structures for either a uniplanar layout or a multilayer structure for improved device reliability. Manufacturability is favoured by avoiding the use of airbridges, substrate thinning or under-etching. The estimated output power of the improved design is 9.0聽 \(\upmu \!\text {W}\) , which is an improvement of three times over the reference photomixer.