Abstract: A phased array antenna may include a substrate and a plurality of phased array antenna elements carried by the substrate. A plurality of intermediate circuit boards may be arranged in spaced apart relation and each may extend transversely from the substrate. Each intermediate circuit board may have a forward end connected to a plurality of respective phased array antenna elements. A rear circuit board may be connected to the plurality of intermediate circuit boards at rearward ends thereof opposite the substrate.

Abstract: A method and apparatus is provided for forming a printed circuit board or other panel in which an array of vias are arranged in a desired connection grid within one or more layers of the board and then the board and vias are cut to form an edge of the board where a surface of the vias is exposed. The board may be orthogonally mounted on its edge to another thin circuit board or aperture sheet with the exposed surface of each via directly connected to such other board or sheet.

Abstract: A radio frequency (RF) receiver system includes an antenna element, a receiver circuit, and an RF signal path connecting the antenna element to the receiver circuit. A limiter may be connected to the RF signal path and include a positive voltage clamp for clamping the RF signal path to a positive threshold voltage relative to a voltage reference, and a negative voltage clamp for clamping the RF signal path to a negative threshold voltage relative to the voltage reference. The limiter may further include a controllable resistance connected in series with the RF signal path. A control circuit controls the controllable resistance based upon at least one of the positive voltage clamp and the negative voltage clamp.