초록 ▼

An apparatus and method for coupling electromagnetic energy into a dielectric material such as tissue while substantially reducing external leakage of the energy. The apparatus may also be used as a receiver for electromagnetic energy transmitted through tissue. The apparatus includes an open transm

An apparatus and method for coupling electromagnetic energy into a dielectric material such as tissue while substantially reducing external leakage of the energy. The apparatus may also be used as a receiver for electromagnetic energy transmitted through tissue. The apparatus includes an open transmission line which is inherently non-radiating and may be configurated with a centrally disposed, central strip conductor. A ground plane conductor is placed in spaced relationship to the central strip conductor and on both sides of the central strip conductor. Alternatively, the central strip conductor may be placed in spaced relationship to one side of a ground plane conductor. The central strip conductor is terminated with a resistor of resistance equal to the characteristic impedance of the open transmission line. The spacing and electrical geometry of each of the central strip conductor, ground plane conductor, electrical interconnection points, and the resistor are each selectively predetermined to minimize spurious radiation during coupling of the transmission apparatus. The method includes minimizing external leakage of electromagnetic energy while coupling electromagnetic energy with tissue using the apparatus of this invention.

대표청구항 ▼

An apparatus for coupling electromagnetic energy into a material comprising: a substrate body of dielectric material, the body having an external surface; an open transmission line mounted at the external surface of the dielectric substrate to accommodate access to electromagnetic fields adjacent th

An apparatus for coupling electromagnetic energy into a material comprising: a substrate body of dielectric material, the body having an external surface; an open transmission line mounted at the external surface of the dielectric substrate to accommodate access to electromagnetic fields adjacent the open transmission line, the open transmission line serving as an inducing means for inducing electromagnetic energy into the material and comprising a central strip conductor and a ground plane conductor, the central strip conductor being surrounded in spaced relationship by the ground plane conductor, the open transmission line further comprising a resistor electrically interconnecting the central strip conductor and the ground plane conductor; and means for connecting the open transmission line with a source of electrical energy to thereby allow the open transmission line to operate as an inducing means. A microwave coupler for coupling microwave energy to tissue comprising: a dielectric substrate configurated with a surface adapted to be placed against the tissue; an open transmission line mounted to the surface of the dielectric substrate, the open transmission line comprising a central strip conductor, a ground plane conductor, and a resistor, the central strip conductor being surrounded in spaced relationship by the ground plane conductor and electrically interconnected to the ground plane conductor by the resistor; and means for connecting the open transmission line to a source of electromagnetic energy, the electromagnetic energy inducing microwave energy in the open transmission line.