U.S. Philips Corporation

John S Palfreeman

Richard F Mitchell

Frederick Warren Smith

Martin Redwood

David Edward Lacklison

George Blair Scott

Ronald F Pearson

A display arrangement including a source of polarized radiation; a magnetic material capable of supporting magnetic bubble domains in the path of the polarized beam, for producing a modulated beam; a device for representing an image encoded signal by means of the magnetic bubble domains; and a display device in the path of the modulated polarized beam for providing a visual display of the encoded image.

Magnetic bubble display systems

A surface acoustic wave band-pass filter comprising a piezoelectric substrate having on one surface first and second SAW resonators tuned to the same frequency and coupled together. An input transducer is coupled to the first resonator and an output transducer is coupled to the second resonator. Each resonator is preferably formed by two spaced apart aligned grating reflectors and the two resonators are preferably coupled by an array of discrete parallel metallic strips extending between the two cavity resonators.

Electrical filters including coupled resonators

Growing community of inventors

Brockham, United Kingdom

John S Palfreeman