
A waveguide feed has been designed to provide specified illumination patterns for a dual-reflector antenna in two wavelength bands: 8 to 9 GHz and 30 to 40 GHz. The feed (see figure) has a coaxial configuration: A wider circular tube surrounds a narrower circular tube that serves as a waveguide for the signals in the 30-to-40-GHz band. The annular space between the narrower and the wider tube serves as a coaxial waveguide for the signals in the 8-to-9-GHz band. The nominal design frequencies of the outer and inner waveguides are 8.45 and 32 GHz, respectively.
This work was done by Daniel Hoppe and Harry Reilly of Caltech for NASA’s Jet Propulsion Laboratory. For further information, access the Technical Support Package (TSP) free on-line at www.techbriefs.com/tsp under the Electronics/Computers category. NPO-40418
Dual-Band Feed for a Microwave Reflector Antenna (reference NPO-40418) is currently available for download from the TSP library.
Download it now!
Dual-Band Feed for a Microwave Reflector Antenna (reference NPO-40418) is currently available for download from the TSP library.
Login first to download.