High density radio frequency connections

A method of coupling radio frequency signaling among printed circuit boards, the method comprising:

• on a first printed circuit board, forming individual stripline links arranged to carry a plurality of radio frequency signals between coaxial radio frequency connectors and a connector configured to couple the plurality of radio frequency signals to a mating connector on a second printed circuit board;
• and
• wherein the connector comprises a connection arrangement having a perimeter of radio frequency ground connections surrounding a set of radio frequency connections configured to carry the plurality of radio frequency signals, with each of the radio frequency connections of the set spaced apart within the perimeter by additional instances of the radio frequency ground connections such that a target signal isolation among individual ones of the plurality of radio frequency signals is established.

An antenna subarray, comprising:

• a printed circuit board comprising stripline links arranged to carry a set of radio frequency signals from a connector to beamforming circuitry driving stripline-to-coaxial connections that individually couple beamformed radio frequency signals to waveguide components configured to drive a plurality of aperture antennas;
• and
• wherein the connector comprises a connection arrangement having a perimeter of radio frequency ground connections surrounding the set of radio frequency connections, with each of the radio frequency connections of the set spaced apart within the perimeter by additional instances of the radio frequency ground connections such that a target signal isolation among individual ones of the set is established.