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May 24 - Tuesday
14:10 - 14:30
TU3G:
Green, Flexible, Wearable, Reconfigurable Technologies
Chair:
Zaher Bardai
Chair organization:
IMN Epiphany
Co-chair:
Ramesh Gupta
Co-chair organization:
LightSquared
Location:
309
Abstract:
New microwave fabrication techniques for efficient, green, flexible, and wearable applications will be described through four presentations in this session. The lead-off paper describes efficiency enhancement in linear transmitters followed by another paper on making microwave circuits bio-degradable. Our third presentation looks at embroidered microwave circuits for wearable applications. A final presentation on a magnetically tunable band-pass filter rounds off the session with a description of this one aspect of reconfigurability.
Presentations in this session
TU3G-3:
Investigation of Microwave Active Elements Embedded in Composite Structures
Authors:
Thomas Baum, RMIT University (Australia);
Richard Ziolkowski, Univ. of Arizona (United States);
Kelvin Nicholson, DST Group (Australia);
Kamran Ghorbani, Rmit Univ. (Australia);
Richard Ziolkowski, Univ. of Arizona (United States);
Presenter:
Kamran Ghorbani, Rmit Univ., Australia
Abstract
Multifunctional structures have become popular within the past decade as they allow for more efficient utilization of limited real-estate available on many civilian and military platforms. Taking structures and electromagnetics, one can marry these two fields to produce a weight optimized loadbearing microwave structure which may ideally be suited for unmanned aerial systems. This paper investigates the use of textile processes to develop loadbearing smart skins built into a class of structural conformal composite materials called pre-pregs (resin pre-impregnated fabrics). An example of an active UWB mini-circuits ERA-4SM+ (0-4 GHz) amplifier has been investigated within a 48 g.m-2 pre-preg structural glass material (HexPly914E). This amplifier has been embroidered and cured at 170˚C in an autoclave at 700 kPa pressure. Its performance before and after curing has been examined.
May 25 - Wednesday
11:30 - 11:50
WE2B:
RF systems and instrumentation for healthcare applications
Chair:
Dietmar Kissinger
Chair organization:
IHP Microelectronics
Co-chair:
Anand Gopinath
Co-chair organization:
Univ. of Minnesota
Location:
304
Abstract:
This session presents novel RF systems and instrumentation solutions for healthcare applications. These include papers presenting microwave radiometric sensors for blood perfusion measurement, smart wireless bandage for chronic wound monitoring, magnetic resonance imaging, and microfluidic heaters.
Presentations in this session
WE2B-5:
Characterization of a Novel Microwave Heater for Continuous Flow Microfluidics Fabricated on High-Resistivity Silicon
Authors:
Tomislav Markovic, KU Leuven, div. ESAT-TELEMIC (Belgium);
Ilja Ocket, IMEC (Belgium);
Ben Jones, IMEC (Belgium);
Bart Nauwelaers, KU Leuven, div. ESAT-TELEMIC (Belgium);
Presenter:
Tomislav Markovic, KU Leuven, div. ESAT-TELEMIC, Belgium
Abstract
This paper presents a novel coplanar waveguide transmission line microwave heater, realized on a high-resistivity silicon wafer with etched microfluidic channels that is bonded to a glass wafer. The heater is a 50 Ohm line with variable attenuation constant along the length of the line. This design results in a uniform energy dissipation in water filled channels, and obviates the need for additional matching structures. The heater was measured around the 25.5GHz design frequency and the obtained S21 data agree to within 0.04 dB with COMSOL Multiphysics simulations for liquid temperatures from 20 to 50 ºC.