ARRAY ANTENNA

摘要

An array antenna includes radiating antenna elements arranged to form an antenna aperture, the radiating antenna elements including a first group and a second group of radiating antenna elements; a corporate feed network configured to feed the radiating antenna elements, wherein the corporate feed network includes a 4-port device including a sum port, a difference port, a first signal port and a second signal port, with the first signal port coupled via the corporate feed network to the first group of radiating elements and the second signal port coupled via the corporate feed network to the second group; a first phase shift element proximal to the antenna aperture to introduce a first predetermined phase shift to the first group of radiating antenna elements; and a second phase shift element proximal to the second signal port to introduce a second predetermined phase shift to the second group of radiating antenna elements.

主权项

1. An array antenna, comprising:
a plurality of radiating antenna elements arranged to form an antenna aperture, the plurality of radiating antenna elements including a first group of radiating antenna elements and a second group of radiating antenna elements distinct in grouping from the first group of radiating antenna elements; a corporate feed network configured to feed the plurality of radiating antenna elements, wherein the corporate feed network includes a 4-port device comprising a sum port, a difference port, a first signal port and a second signal port, with the first signal port coupled via the corporate feed network to the first group of radiating elements and the second signal port coupled via the corporate feed network to the second group of radiating elements; a first phase shift element proximal to the antenna aperture to introduce a first predetermined phase shift to the first group of radiating antenna elements; and a second phase shift element configured at proximal to the second signal port to introduce a second predetermined phase shift to the second group of radiating antenna elements.