Patent ID: 8427384

Claim:
An antenna array comprising: a plurality of horn antenna elements arranged in at least one row of horn antenna elements extending from a first end of the antenna array to a second end of the antenna array, each horn antenna element of the plurality of horn antenna elements configured to receive an information signal and to provide the information signal at a feed point of the horn antenna element; and a waveguide feed network coupling the plurality of horn antenna elements to a common array feed point, the waveguide feed network configured to sum the information signals from the plurality of horn antenna elements to provide a summed signal at the common array feed point; wherein a center-to-center horn spacing between adjacent ones of the plurality of antenna elements in the at least one row is approximately equal to one wavelength at substantially a highest transmit frequency of the antenna array; and wherein each row of horn antenna elements comprises 32 horn antenna elements; wherein each row of horn antenna elements includes an interior horn antenna element, a third horn antenna element, a second horn antenna element, and an end horn antenna element; wherein the third horn antenna element is smaller than the interior horn antenna element and is located closer to the first end of the antenna array than the interior horn antenna element; wherein the second horn antenna element is smaller than the third horn antenna element and is located adjacent to the third horn antenna element and closer to the first end of the antenna array than the third horn antenna element; and wherein the end horn antenna element is smaller than the second horn antenna element and is located adjacent to the second horn antenna element and at the first end of the antenna array.