Title :
Alignment fixture for millimeter waveguide
Author :
Kremer, D.P. ; Newell, A.C.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fDate :
6/1/1990 12:00:00 AM
Abstract :
An alignment fixture for handling the precise waveguide connection procedures required in performing gain measurements of millimeter-wave antennas is described. Two versions of the fixture were developed: one for small devices, such as standard gain horns, which can be supported by the fixture, and another for larger devices. These systems, along with a properly-installed flange, can reduce the measurement uncertainty associated with the connection from greater than 1 dB to a few hundredths of a decibel. For measurements in the WR-22 and WR-15 waveguide bands, the overall gain error for millimeter-frequency antenna measurements has decreased from 0.31 dB to 0.10 dB.<>
Keywords :
gain measurement; microwave antennas; microwave measurement; waveguide couplers; MM wave antennas; WR-15 waveguide bands; WR-22 waveguide band; alignment fixture; flange; gain error; gain measurements; millimeter waveguide; waveguide connection procedures; Antenna measurements; Fixtures; Flanges; Frequency measurement; Gain measurement; Insertion loss; Loaded antennas; Loss measurement; Millimeter wave measurements; Millimeter wave technology;
Journal_Title :
Antennas and Propagation Magazine, IEEE
