The Marconi Company Limited

John R Wallington

Robert Brian Greed

John Graham Richings

Conventionally, if several tasks have to be carried out simultaneously by receivers and transmitters, then a number of them are required, each having its own antenna. By employing the invention a single receiver or transmitter having one antenna can carry out a number of simultaneous tasks. A receiver has an array of antenna elements which receives signals and transmits them along conductors. Junctions include variable control means to apply a variable proportion of the signals on a conductor to one of a series of channels, each junction also giving a particular variable phase shift. By correctly selecting the amplitude and phase shift the outputs on the channels correspond to signals from respective directions of sensitivity of the receiver, and may be considered to represent a number of beams.

Receivers and transmitters

A versatile switch for routing very high frequency signals is formed in microstrip. Each switch has four ports, and a number of switches can be interconnected to provide complex routing or power splitting functions.

Switching arrangements

A switching arrangement for use at very high frequencies (gigahertz) consists of a number of four port microstrip switches interconnected to provide a versatile routing matrix. The use of P.I.N. diodes in each switch provides low insertion loss and also high isolation between different routes. The arrangement can be made in a very compact form.

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London, United Kingdom

John R Wallington