Australia has issued an RFI for a narrowband SATCOM capability after the government cancelled the JP-9102 contract eight months ago.

The helical beam antenna has inherent broad-band properties. Over a wide frequency band the pattern shape, circularity of polarization, and terminal impedance are relatively stable. Measured ...

A dual-polarized multi-beam antenna based on a reflector in the X-band is presented. The traditional horn antenna is replaced by a dual-polarized microstrip antenna to form the feed array of the ...