Antennae & RF Equipment

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ASC supply a wide range of fixed, portable and mobile satellite antennae

One of the key elements of a satellite network is the communication between equipment on the ground and the satellite itself. In order for the signal to travel the distance to a geostationary satellite at an acceptable power level, radio frequencies between 3.5GHz and 14.5GHz are used to transmit and receive. Dependant on the location, level of service and the satellite being used, the specific frequency will vary from C-Band at the lower frequencies to Ku band at the higher frequencies.

At the lower end of the frequency spectrum, signals are able to penetrate denser media with less degradation, but as a result require higher power and larger antennae than is required at higher frequencies to travel the same distance. However, Ku band, being at the higher end of the spectrum, is more susceptible to changes in media.

ASC supply a wide range of fixed, portable and mobile satellite antennae, ranging in size from 60cm to 6.2m and larger. The larger earth station antennae are generally used for hub environments, concentrating a number of remote sites to one location, and thus needs to be bigger than the remote in order to deal with the combined power requirement transmiting to all the remote sites.

Portable antennae are available in a manual set-up and break-down format with case/s to transport or as a fully automated option that requires the push of a button to acquire and peak the satellite signal. Mobile antennae need to stay fixed on the satellite whilst in motion – these are referred to as stabilised antennae, mostly used at sea, but also on land and known as ‘Comms on the Move’ or COTM.

Land based COTM antennas are currently available but quite expensive. Please contact us if you have a requirement for this type of antenna.

To complete an antenna system, it needs a transmitter and a receiver – the active RF components. The transmitter is most commonly referred to as a BUC (Block Up Converter), and the receiver is most commonly referred to a an LNB (Low Noise Block-down converter). There are many variants of these components depending on the power requirements and antenna size. ASC supply a wide range of satellite RF equipment in order to ensure that the most appropriate equipment is used when delivering a given solution.

If you require more information, please contact us.