Gustavo REHDER

Seminar of Gustavo REHDER

“MEMS a promising technology for tunable mm-wave circuits”
Thursday, September 3rd, 2015  from  13:00 to  14:00


Microelectromechanical systems (MEMS) used for RF applications have shown to be a viable solutions  for  tunable  circuits  applications.
However,  at  microwave  frequencies,  the complex encapsulation  and  reliability  issues  related  to  MEMS  result  in  a  disadvantage  when compared  to CMOS technology,  even  if  they  show  better  performance  in  terms  of  linearity, insertion  loss  and  power handling,  when  compared  to  MOS  varactors  and  switches.  As  the
frequency increases in the mmW mm-wave frequency range, the quality factor of the semiconductor tuning  elements  decrease drastically  and  MEMS  become  an interesting  alternative,  especially because the well-known reliability issues are being resolved.
This seminar will propose an overview of  MEMS-based  tuning  elements  as well  as  circuits  that  are  being  developed  using  MEMS  for mmW mm-wave applications. In particular, a distributed approach based on the use of slow-wave transmission lines will be described.

Gustavo  Rehder  is  35  years  old.  He  received  his  PhD  degree  from  the  Universiiy  of  São  Paulo (Brazil) in 2008. In 2010, he was Post Doctoral researcher at the IMEP-LaHC and since 2013 he is Associate Professor at the University of São Paulo.
 He authored or co-authored 13 publications in peer  reviewed  international  journals  and  is  author or  co-author  of  35  communications  at international conferences with peer reviewed process and proceedings as well as 3 patents. 
Main publications or patents:
  •  A.-L. Franc, et al., “Compact and Broadband mm-Wave Electrically Tunable Phase Shifter Combining Slow-Wave Effect with Liquid Crystal Technology,“ IEEE Trans. on Microwave Theory Tech., vol. 61, no. 11, pp. 3905-3915, Nov. 2013.
  • A. L. C. Serrano, et al., “Modeling and Characterization of Slow-Wave Microstrip Lines on Metallic-Nanowire-Filled-Membrane Substrate,“ IEEE Trans. on Microwave Theory Tech., vol. 62, no. 12, pp. 3249-3254, Dec. 2014.
  • A. L. C. Serrano, et al., “Slow-wave radiofrequency propagation line”, patent no. US20150070110 A1, publication date Mar 12, 2015.
  • G. Rehder, et al., “Development of a slow-wave MEMS phase shifter on CM
    OS technology for millimeter wave frequencies
    ”. Microelectronic Engineering. , v.90, p.19 - 22, 2012.
  • G. Rehder et al. “Ligne de transmission haute fréquence”  patent no. WO/2012/032269, publication date Sept 29, 2011.


by Gustavo REHDER
Escola Politécnica da Universidade de São Paulo

Date infos
Open to all : teachers, students, researchers, administrative, technicians

Location infos
Room Belledonne, IMEP-LaHC, MINATEC