Abstract: One example includes an antenna system. The antenna system includes a plurality of printed boards arranged in layers and including a first printed board and a second printed board. The first printed board includes a resonator and the second printed board includes a shield. The antenna system also includes at least one conductive via that extends through each of the plurality of printed boards and is coupled to a transceiver. The at least one conductive via can cooperate with the resonator to at least one of transmit a wireless signal from the transceiver via the antenna system or receive the wireless signal at the transceiver via the antenna system.

Abstract: A durable, broad-band low insertion loss RF feedthrough is formed of a straight conductor (5) centrally supported by, hermetically sealed to and axially extending through the center of a strong, rigid, impervious ceramic disk (3). The ceramic disk is hermetically sealed, directly or indirectly, to the metal barrier (11) through which the feedthrough is to propagate RF energy. The new ferrule and ferrule-less ceramic metal RF feedthroughs avoid the use of glass, conventional in existing feedthroughs. The novel feedthrough serves as the principal element of a microwave microstrip line to waveguide transition.