Abstract: An antenna system for an article of furniture in which a panel of the article of furniture is sealed by a low loss dielectric material to isolate the panel from impurities which affect its electrical integrity. An antenna structure is applied thereon by silk screening, painting or otherwise marking of a conductive ink, or by vacuum deposition techniques, or by application of stamped or die cut foil, or by metallic tape, all by way of example. Connections to the antenna structure are made by compressing a conductive elastomeric material against terminations of the antenna structure so as to avoid temperature or other initiated dimensional changes of the panel which could effect the contact resistance to the terminations of the antenna structure, and also to avoid damaging the antenna structure. A specific connection arrangement is disclosed.

Abstract: A testing means for determining susceptibility to radiated energy and leakage of energy from a device having a conductive surface comprising a stripline unit for transmitting radiant energy in the principal transverse electromagnetic mode including a first conductive ground plane element, a second conductive ground plane element spaced from and parallel to the first ground plane element, and a plane center conductor element positioned intermediate and parallel to the first and second ground plane elements. The stripline unit has first and second end sections providing energy coupling means, and an intermediate section between the end sections for transmitting energy therealong. A portion of the first ground plane element of the intermediate section of the stripline unit has an opening for being closed by a conductive surface of a device which is to be tested and which effectively provides a portion of ground plane of the stripline unit.

Abstract: A broad-band antenna device comprising a variable aperture element which radiates or receives signals in the high frequency portion of the band and a pair of fixed aperture elements which radiate or receive signals in the low frequency portion, the variable aperture element comprising a planar spiral antenna element with a double winding which is electrically coupled to the fixed aperture elements comprising a pair of oppositely positioned center fed slot antenna elements.