Patent ID: 11955722
Assignee: ANOKIWAVE, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A phased array system comprising:
a substrate;
a plurality of patch antenna elements on the substrate;
a beamforming integrated circuit (IC) on the substrate;
a plurality of feedlines electrically coupling the plurality of patch antenna elements with the beamforming IC,
the plurality of feedlines being non-intersecting, symmetric feedlines that mitigate cross-polarization, wherein:
the plurality of patch antenna elements includes four elements each including two positive excitation interfaces A and C on opposing sides of the patch antenna element and two negative excitation interfaces B and D on opposing sides of the patch antenna element for operation in two orthogonal polarizations;
the beamforming IC has a first set of element interfaces and a second set of element interfaces, the first set of element interfaces being configured to be polarized in a first polarization and the second set of element interfaces being configured to be polarized in a second polarization different than the first polarization;
the first set of element interfaces (multiple PIN A) includes at least one first pin electrically coupled to a pair of positive patch antenna elements through a first feedline (LenA) that split feeds at an electrical center AA into positive excitation interface A of each positive patch antenna element, and includes at least one second pin electronically coupled to a pair of negative patch antenna elements through a second feedline (LenC) that split feeds at an electrical center CC into the positive excitation interface C of each negative patch antenna element, such that the first and second feedlines are the same length, the two split feeds are the same electrical length, the pair of positive patch antenna elements is oppositely excited compared to the pair of negative patch antenna elements, and the second pin is excited 180-degrees out of phase compared to the first pin; and
the second set of element interfaces (multiple PIN B) includes at least one third pin electrically coupled to the pair of positive patch antenna elements through a third feedline (LenB) that split feeds at an electrical center BB into the negative excitation interface B of each positive patch antenna element, and includes at least one fourth pin electronically coupled to the pair of negative patch antenna elements through a second feedline (LenD) that split feeds at an electrical center DD into the negative excitation interface D of each negative patch antenna element, such that the third and fourth feedlines are the same length, the two split feeds are the same electrical length, the pair of negative patch antenna elements is oppositely excited compared to the pair of positive patch antenna elements, and the fourth pin is excited 180-degrees out of phase compared to the third pin.