Abstract: A planar filter includes a first ground plate that is formed from a material that is a good conductor of electricity and a first substrate that is formed from a dielectric material disposed adjacent to the first ground plate. The planar filter also includes a second ground plate that is formed from a material that is a good conductor of electricity and a second substrate that is formed from a dielectric material disposed adjacent to the second ground plate. A resonator is formed from a material that is a good conductor of electricity and including a first portion that is disposed adjacent to the first substrate, a second portion that extends from the first portion, and a third portion that extends from the second portion and is disposed adjacent to the second substrate, wherein the first and third portions of the resonator extend in different planes.

Abstract: An orthopedic device of a therapeutic nature which includes an air bladder and an overlying gel bladder. The air and gel bladders are joined and are secured within a retainer which is adapted to be placed about a body part of a patient with the air or gel bladder being positioned next to the body part.

Abstract: A dual band telemetry system useful for monitoring patients in a care unit of a health care facility. The system includes an antenna system with a first antenna tuned to receive a signal in a first frequency band, a second antenna tuned to receive a signal in a second frequency band, a down converter for producing a frequency translation signal, and a mixer coupled to the second antenna. The mixer combines the signal received by the second antenna with the frequency translation signal to produce a signal having a frequency in the first frequency band. A combiner coupled to the mixer and the first antenna combines the signal generated by the mixer with the signal received by the first antenna. The combined signals are ultimately delivered to a central station for processing.