A system including a first electronic device (120; 420) and a second electronic device (132; 420'), the first electronic device (120; 420) for electromagnetic communication with the second electronic device (132; 420'), the second electronic device (132; 420') having a surface and plural second Extremely High Frequency communication units (134; 424') distributed on the surface, the first electronic device comprising: a dielectric substrate having a major surface; at least a first data storage unit mounted on the dielectric substrate, for storing digital information; and plural first EHF communication units (122; 424; 744), each having an antenna (30; 58; 94), being mounted on the dielectric substrate, and being configured for transmitting and/or receiving respective EHF electromagnetic signals and converting between corresponding baseband signals and EHF electromagnetic signals, each of the plural first EHF communication units (122; 424; 744) generating electromagnetic radiation having a polarization characteristic that is different from another polarization characteristic of electromagnetic radiation generated by an adjacent first EHF communication unit (122; 424; 744); wherein at least one of the plural first EHF communication units is in communication with the first data storage unit to convert between a first EHF electromagnetic signal containing digital information conducted by the antenna (30; 58; 94) of the at least one first EHF communication unit, and a first data signal conducted by the first data storage unit; and wherein the plural first EHF communication units (122; 424; 744) are distributed over the major surface in a configuration that aligns with corresponding ones of the second plural EHF communication units (134; 424') of the second electronic device (132; 420'). a dielectric substrate having a major surface; at least a first data storage unit mounted on the dielectric substrate, for storing digital information; and plural first EHF communication units (122; 424; 744), each having an antenna (30; 58; 94), being mounted on the dielectric substrate, and being configured for transmitting and/or receiving respective EHF electromagnetic signals and converting between corresponding baseband signals and EHF electromagnetic signals, each of the plural first EHF communication units (122; 424; 744) generating electromagnetic radiation having a polarization characteristic that is different from another polarization characteristic of electromagnetic radiation generated by an adjacent first EHF communication unit (122; 424; 744); wherein at least one of the plural first EHF communication units is in communication with the first data storage unit to convert between a first EHF electromagnetic signal containing digital information conducted by the antenna (30; 58; 94) of the at least one first EHF communication unit, and a first data signal conducted by the first data storage unit; and wherein the plural first EHF communication units (122; 424; 744) are distributed over the major surface in a configuration that aligns with corresponding ones of the second plural EHF communication units (134; 424') of the second electronic device (132; 420').