Abstract: A dual polarized dipole wearable antenna may be embedded within a shirt or/and outfit, placed at a range of up to few millimeters from the body of a user in which there is a transmitting swallowable imaging device. The antenna is constructed of three conducting layers: radiating layer, feed network layer and ground layer, separated by two dielectric substrate layers. The feed network layer may receive and transmit horizontally polarized signals. When placed one on top of the other, parallel strips of the radiating layer are disposed against a longitudinal strip of the feed network layer, and stubs of the feed network layer are disposed across a slot of the radiating layer. The slot of the radiating layer may be excited by radiation from, and be in interaction with the stubs of the feed network layer to receive and transmit vertically polarized signals.

Abstract: A dual polarized dipole wearable antenna may be embedded within a shirt or/and outfit, placed at a range of up to few millimeters from the body of a user in which there is a transmitting swallowable imaging device. The antenna is constructed of three conducting layers: radiating layer, feed network layer and ground layer. The conducting layers may be separated by two dielectric substrate layers. Feed network layer may receive and transmit horizontally polarized signals. The feed network layer consists of a main stripe comprising a plurality of substantially straight sections parallel to each other with a plurality of stubs protruding from them. The longitudinal stripes may be connected to each other via substantially right angled bands, thus creating a continuous stripe. The radiating layer may substantially take the form of two continuous and parallel strips banded at right angles having a slot or a gap there between.

Abstract: A microstrip antenna comprises a first dielectric layer having a permittivity of 2.5-12.5 carrying the ground plane on one face and a feeder-resonator on the opposite face; a second dielectric layer thereover having a permittivity of 2.2-2.5 and carrying on its outer face a radiator electromagnetically coupled to the feeder-resonator; and spacing means spacing the second dielectric layer from the first a distance of up to seven times the thickness of the first, and providing a permittivity between the two dielectric layers which is approximately that of air. Matching of the antenna is obtained by varying the spacing between the two dielectric layers. The gain of the radiating element is better than 7.5 dbi for bandwidth of 15%. Sidelobe level is less than 15 dB in azimuth and elevation plan. The radiation pattern of the antenna is symmetric in both azimuth and elevation plan.