Nortel Networks Corporation

Stc, Inc

Northern Telecom Limited

Standard Telephones and Cables Public Limited Company

Standard Telephones & Cables Limited

Ian Paul Llewellyn

Rudolf A Heinecke

Martin Stevens Smith

Sureshchandra Mishrilal Ojha

Suresh M Ojha

Simon John Gale

Michael F Grant

Sonya Victoria Amos

Steven William Sparksman

Julius George Robson

Mark W Tait

Peter Glanville Gwynn

Anthony Dalby

Typically it is expensive to add cable within an existing multiple dwelling units (MDUs) such as blocks of flats to provide additional services such as broadband internet access, video on demand and video telephony. The present invention provides a broadband wireless access system especially suited to MDUs. A base station modulates radio frequency carrier signals with data to be transmitted in the system, and these signals are directed along a distribution network to a plurality of antennas which provide WLANs for subscriber equipment within the MDU.

Broadband wireless access system

This invention relates to internal antenna arrangements for radio communications handsets. Internal antenna size and shape represents a constraint on handset miniaturisation if good antenna efficiency and bandwidth characteristics are to be maintained. The use of acoustic enhancing volumes of free space about a handset's speaker unit also constrains further miniaturisation. The present invention provides an internal antenna arrangement which facilities further miniaturisation and which combines antenna volume with the acoustic enhancing volume.

Radio communications handset antenna arrangements

The present invention relates to antenna arrangements for radio communications devices including cordless phone handsets and base stations. The handset includes an antenna arrangement incorporating one or more batteries as part of a monopole structure. The base station includes an antenna arrangement incorporating a low voltage power supply cable. Both handset and base station may also optionally further incorporate an antenna structure located in the split line between their respective casing components.

Radio communication device antenna arrangements

The present invention relates to radio communications antennas and in particular relates to an antenna for such. An inverted E antenna is disclosed comprising a radiating element and a ground plane. The antenna is suitable for placement in a mobile communications handset. The antenna finds particular applicability in dual mode handsets, where two or more antennas may be located in close proximity. The small dimensions of the antenna relative to the operating wavelength, achieved by folding back an element of the antenna provides a simple solution to such problems as antenna coupling since its small size allows it to be placed as far away as possible within the small confines of a radio communications handset. A method of operating a mobile communications arrangement is also disclosed, the arrangement comprising a microphone, an audio speaker, a transceiver, and an antenna; wherein the antenna is in the form of an inverted E.

Inverted-E antenna

An apparatus for pulsed plasma treatment of a substrate surface includes means for removing spent gas from a region adjacent the substrate for each pulse. The apparatus may also include means for sweeping an intense plasma region across a substrate surface. Rapid gas exchange is provided by pressure pulsing the gas admission. This facility also provides means for rapidly alternating different gases.

Pulsed plasma apparatus and process

In a pulsed radio frequency plasma deposition process the pulse repetition frequency is matched to the gas exchange rate. This is achieved by using a pulse width of 50 to 500 microseconds and a pulse repetition rate corresponding to the time within which gas is exchanged in the reaction region.

Pulsed plasma process for treating a substrate

In a pulsed plasma process for surface treatment of a substrate the containing reactor vessel (11) has an inner cross-section conforming to the substrate geometry so as to confine the intense plasma region to the substrate surface (12). Preferably this region should be within 15 to 20 mm of the surface. Advantageously the inner surface is provided by a demountable insert (13).

Method of surface treatment

Discontinuities, e.g. scratches, in a plastics surface are removed by exposing the surface to a pulsed radio frequency plasma comprising a mixture of argon and hydrogen. After melting has been effected the surface is exposed to an argon plasma to effect cross-linking to form a smooth surface layer.

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Harlow, United Kingdom

Ian Paul Llewellyn