Off-Center Fed Patch Array Antenna for Radiation Weighting

The patent applies asymmetry by positioning the feed line connection point at an off-center location on the patch antenna element. This asymmetric feeding structure creates a current distribution that naturally provides amplitude weighting across the antenna array elements without requiring complex power division networks. The connection point is specifically positioned at a distance from the centerline of the patch element, which generates the desired current standing wave pattern for controlled radiation weighting.

The patent implements local quality by creating different current distribution characteristics at different locations on the patch antenna. The off-center feeding creates a specific current standing wave pattern where the amplitude varies across different antenna elements. This local variation in current quality allows each antenna element to have different radiation weighting, achieving beamforming capability without complex external networks.

The asymmetric feeding structure eliminates the need for strict phase adjustment by naturally creating the desired current distribution pattern. The off-center connection point generates a specific phase relationship between adjacent antenna elements through the standing wave pattern, removing the requirement for complex phase shifter networks and simplifying the overall design.

The antenna structure performs self-phase-adjustment through its geometric configuration. The off-center feeding position automatically generates the appropriate phase differences between elements via the current standing wave distribution, eliminating the need for external phase control mechanisms and making the design self-configuring.