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  • 1
    Electronic Resource
    Electronic Resource
    Adjustable tuning for planar millimeter-wave circuits (1986)
    Springer
    International journal of infrared and millimeter waves 7 (1986), S. 1729-1746 
    Details
    ISSN: 1572-9559
    Keywords: Integrated circuit ; laser etching ; coplanar waveguide ; adjustable backshort
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract At millimeter wavelengths uncontrollable parasitics are of ten large enough to significantly degrade circuit performance when they are not compensated by adjustable elements. It is difficult to add adjustable elements to planar millimeter-wave circuits without increasing their size, weight, and cost. In this paper we investigate three adjustable elements, all involving movement of a short along a section of coplanar waveguide (CPW). These tuners are incorporated in a planar detector circuit for purposes of demonstration and characterization. Their losses are determined. The precision with which they can be adjusted is also considered. Of the three, a tuner based on the laser-assisted etching of molybdenum is shown to have the highest performance at millimeter wavelengths. This tuner employs laser direct write etching1 with a recently developed photochemical reaction for trimming molybdenum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01010073
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  • 2
    Electronic Resource
    Electronic Resource
    Planar oscillators for monolithic integration (1982)
    Springer
    International journal of infrared and millimeter waves 3 (1982), S. 771-782 
    Details
    ISSN: 1572-9559
    Keywords: Millimeter ; Near-millimeter ; monolithic ; IC
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Planar oscillators for monolithic millimeter-wave integrated circuits are considered, and a design based on a coplanar-waveguide resonator is described. Design data are obtained from simulation at 1 GHz. the resonator has a Q of 195 (50 when scaled to 100 GHz) and is mechanically tunable over a range of 12%. Combining this resonator with a Gunn diode, a model oscillator is obtained. Output is obtained quasi-optically through a transmitting antenna. Twenty one milliwatts of output at 4.5 GHz are obtained with high spectral purity. A 100 GHz monolithic planar oscillator based on this design should be possible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01008643
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    Paper (German National Licenses)
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