Notch Antennas

Reflector Systems

Passive Components

Multiband Systems

Wideband Systems

Installed Performance

High-power Components

Work connected with Space

Customers include British Aerospace, Matra Marconi Space, ESTEC, Sula Systems Limited, BNSC, Aerojet, Communications Research Laboratory, Japan, University of Berne.

Much of our space work is in collaboration with Sula Systems Limited

Examples of work carried out.

• Design of reflector antenna systems and the associated quasi-optical feed systems for the meteorological spacecraft, AMSU-B MAAS was the design authority for the reflector system for AMSU-B and has worked on the European successor to AMSU-B. AMSU-B was successfully launched early in 1998 and good data is being transmitted back. This is a full set of corrected data from the 89 GHz channel.
• Assessment of the RF performance of the manufactured reflector for HSB (Brazilian AMSU-B)
• Design of a 15 channel system for ATMS which included a multiband reflector with associated wire grid polarisers and a complex diplexer.
• Study for Meteosat-A
• Computation of TT&C installed performance on RADARSAT
• Computation of complex reflector geometries including the RF performance of Quasi-Optics Systems can be carried out. For example, a complete PO/PTD analysis of the Quasi-Optics Network for MASTER has been carried out.
• Design of a microwave imager with a multichannel feed system for space use (Figure 2). The 89 GHz feed horn which provides two orthogonally polarised outputs is shown in Figure 3.
• Much of this work involves the modelling of high performance feeds with multiple reflectors

Figure 1 AMSU-B data

Figure 2 Assembly of multiple feeds for 1 m diameter offset reflector. (from SOLIDWORKS). The envelope dimensions are 130 by 120 by 120 mm.

Figure 3 Potter horn and Orthomode Transducer for 89 GHz with a totoal length of 61.0mm