Ferfics Limited

Other

John O'Sullivan

Eugene Heaney

John Keane

Ian O'Regan

Stephen Kenney

Stephen Keeney

The invention relates to a Radio Frequency System and method. A Radio Frequency (RF) system comprising a RF switch comprising a plurality of transistor switching elements implemented on Silicon on Insulator (SOI) for switching at least one or more RF signals and said SOI comprises a bulk substrate region and a buried oxide region. At least one filter is adapted to isolate the RF signal from the substrate and/or other high frequency signals or control signals present in the RF system. There is also provided a coupling capacitor adapted to cooperate with the filter to improve linearity of the transistor switch elements.

Switching system and method

A RF transistor stack is described. The RF transistor stack comprises a first transistor having a T-gate layout configuration. The first transistor has a body region; a plurality of drain regions; and a plurality of source regions. A second transistor is provided which has a T-gate layout configuration. The second transistor has a body region; a plurality of drain regions; and a plurality of source regions. An interconnect operably couples the source regions of the first transistor with the source regions of the second transistor such that the distortion due to asymmetry in the division of RF voltage between the drain to source and the source to body terminals of first transistor is cancelled by reversing the asymmetry in the division of the RF voltage in the second transistor.

Radio frequency transistor stack with improved linearity

An RF switch with inter-domain ESD protection. The RF switch comprises an RF domain section having a plurality of RF switching elements; and a DC domain section having circuitry configured for driving the RF switching elements. At least one primary ESD protection element is operably coupled between the RF domain section and DC domain section.

RF switch with inter-domain ESD protection

A training device for installation in a practice area is provided, the training device providing an indication to a user as to where on a first surface of the training device a football should be aimed. The first surface is configured to allow the ball to pass through the first surface, where it is collected and returned to the user. The training device is also configured to indicate to the user approximately where in the practice area the football will be returned to, so as to allow the user to position themselves accordingly.

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Cork, Ireland

John O'Sullivan