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  • 1
    Electronic Resource
    Electronic Resource
    Millimeter-wave microstrip solid-state sources and amplifiers (1986)
    Springer
    International journal of infrared and millimeter waves 7 (1986), S. 729-747 
    Details
    ISSN: 1572-9559
    Keywords: microstrip components ; IMPATT oscillators ; IMPATT amplifiers ; Gunn oscillators ; injection-locked amplifiers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The past decade has seen increased applications for millimeter waves both in commercial and defense activities. Conventional millimeter-wave solid-satate sources were built in waveguide, suspended stripline, and finline. Fabricating these components in microstrip provides advantages of light weight, small size, and low cost. This paper summarizes the recent developments in millimeter-wave microstrip solid-state sources and amplifiers. The design and performance of these components will be presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01014380
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    Paper (German National Licenses)
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  • 2
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    Ka-Band Beam Steering Reflectarray Study (1999)
    In:  Other Sources
    Details
    Publication Date: 2018-06-05
    Description: A one-meter diameter, 32 GHz active microstrip reflectarray capable of electronic beam steering has been studied. The 15_500 element array consists of rnicrostrip patch antennas, microstrip phase shifters, and dc bias lines. Specifically, the study focused on the solid-state devices and dc bias layouts for scanning the beam linearly 45 from boresight using 2-bit phase shifters. Three configurations are recommended for the reflectarray with integrated 2-bit phase shifters where the total substrate and cladding mass varies from 8 kg to 14 kg. Additionally, dc power requirements for p-i-n diodes in 1-bit, 2-bit and 3-bit phase shifting circuits are approximately 19 W, 19 W, and 39 W, respectively. The dc power requirement for phase shifters using passive MESFETs is much less than 1 W.
    Keywords: Communications and Radar
    Type: IEEE Antennas and Propagation Society International Symposium, Volume 3; 1662-1665; IEEE-Catalog-99CH37010-Vol-3
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    A Cassegrain Offset-Fed Dual-Band Reflectarray (2006)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: An X/Ka dual-band microstrip reflectarray with circular polarization (CP) has been constructed using thin membranes and Cassegrain offset-fed configuration. It is believed that this is the first Cassegrain reflectarray ever been developed. This antenna has a 75-cm-diameter aperture and uses metallic subreflector and angular-rotated annular ring elements. It achieved a measured -3dB-gain bandwidth of 700 MHz at X-band and 1.5 GHz at Ka-band, as well as a CP bandwidth (3dB axial ratio) of more than 700 MHz at X-band and more than 2 GHz at Ka-band. The measured peak efficiencies are 49.8% at X-band and 48.2% at Ka-band.
    Keywords: Communications and Radar
    Type: IEEE Antennas and Propagation Symposium; Jul 09, 2006 - Jul 14, 2006; Albuquerque, NM; United States
    Format: text
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    NASA TECHNICAL REPORTS
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