DUAL-POLARIZED BROADBAND HORN ANTENNA FOR MICROWAVE TRANSCEIVER

摘要

The invention relates to a radiating element (1) for receiving and transmitting microwave signals in a lower frequency band (RX) and a higher frequency band (TX).The radiating element (1) comprises a septum polarizer (4) for transmitting and/or receiving a frequency band in a first polarization and for transmitting and/or receiving a frequency band in a second polarization that is orthogonal to the first polarization. Waveguides feeding the radiating elements have a fundamental mode cut-off frequency and a higher mode cut-off frequency. The invention proposes to adapt the fundamental mode cut-off frequency and the septum geometry such that as top frequency band, created by a short septum length,endsbelowthe higher frequency band (TX).