ANTENNA DEVICE AND TRANSMITTING/RECEIVING DEVICE

摘要

Two circular waveguides (1,3) having a propagation mode of TM01 mode are coaxially arranged with a waveguide side choke (4) disposed therebetween. A rectangular waveguide (2) is connected to the fixed circular waveguide (1), while a primary radiator (5) is connected to the rotary circular waveguide (3). In this way, a high frequency signal supplied from the rectangular waveguide (2) to the fixed circular waveguide (1) can be radiated from the primary radiator (5). The circular waveguides (1,3) and waveguide side choke (4) can constitute a rotary joint, and a rotation of the primary radiator (5) together with the rotary circular waveguide (3) allows the high frequency signal radiated from the primary radiator (5) to be scanned.