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  • Communications and Radar  (5)
  • 2000-2004  (5)
  • 1970-1974
  • 1
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    Radio frequency telemetry system for sensors and actuators (2003)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The present invention discloses and teaches apparatus for combining Radio Frequency (RF) technology with novel micro-inductor antennas and signal processing circuits for RF telemetry of real time, measured data, from microelectromechanical system (MEMS) sensors, through electromagnetic coupling with a remote powering/receiving device. Such technology has many applications, but is especially useful in the biomedical area.
    Keywords: Communications and Radar
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    RF Telemetry System for an Implantable Bio-MEMS Sensor (2004)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: In this paper, a novel miniature inductor and a pick-up antenna for contact less powering and RF telemetry from implantable bio-MEMS sensors are presented. The design of the inductor and the pick-up antenna are discussed. In addition, the measured characteristics at the design frequency of 330 MHz have been shown.
    Keywords: Communications and Radar
    Type: NASA/TM-2004-212899 , E-14307 , 2004 International Microwave Symposium; Jun 06, 2004 - Jun 11, 2004; Fort Worth, TX; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Printed Multi-Turn Loop Antenna for RF Bio-Telemetry (2004)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: In this paper, a novel printed multi-turn loop antenna for contact-less powering and RF telemetry from implantable bio- MEMS sensors at a design frequency of 300 MHz is demonstrated. In addition, computed values of input reactance, radiation resistance, skin effect resistance, and radiation efficiency for the printed multi-turn loop antenna are presented. The computed input reactance is compared with the measured values and shown to be in fair agreement. The computed radiation efficiency at the design frequency is about 24 percent.
    Keywords: Communications and Radar
    Type: NASA/TM-2004-212982 , E-14374 , 2004 Antennas and Propagation Society International Symposium; Jun 20, 2004 - Jun 26, 2004; Monterey, CA; United States|URSI National Radio Science Meeting; Jun 20, 2004 - Jun 26, 2004; Monterey, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    An Overview of NASA Glenn Research Center's Antenna R&D and Technology Efforts (2002)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: This viewgraph presentation provides an overview of antenna research and design efforts being performed at NASA's Glenn Research Center. The following type of antenna research projects are discussed: phased array antennas, thin film ferroelectric reflectarray antenna, microelectromechanical systems (MEMs) based antennas and multi-beam antennas. Project overviews, design issues and research problems for each type of antenna system are covered. Additional topics reviewed included: communication systems of the future and a facility description.
    Keywords: Communications and Radar
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    High Resolution Scanning Reflectarray Antenna (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: The present invention provides a High Resolution Scanning Reflectarray Antenna (HRSRA) for the purpose of tracking ground terminals and space craft communication applications. The present invention provides an alternative to using gimbaled parabolic dish antennas and direct radiating phased arrays. When compared to a gimbaled parabolic dish, the HRSRA offers the advantages of vibration free steering without incurring appreciable cost or prime power penalties. In addition, it offers full beam steering at a fraction of the cost of direct radiating arrays and is more efficient.
    Keywords: Communications and Radar
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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