The Power That OMTs Give to VSAT Systems
For VSAT (or Very Small Aperture Terminal) systems to work well, you need a box. This box would interface between an antenna and a computer system. For the reception of signals to rely on a single antenna, OMTs (or Orthomode Transducers) come into the picture.
More Reliable Transmission
An important factor to remember is that OMTs make for more reliable transmissions. They are simple devices – and passive ones. As such, they establish the connection between the transmitter and the receiver. With OMTs and a stable connection, you’ll need only a single feed horn.
What if an OMT is missing? The VSAT systems transmission might not be seamless because you will be using more than one antenna. The signals can get mixed up and a successful transmission is not guaranteed.
The Better Kind
Manufacturers offer OMTs in various frequencies to cover full waveguide bands. These include Ka Band, Ku Band, and C Band (especially for VSAT systems). When choosing OMTs, you should consider different factors such as operational temperature, input power (max), frequency of operation, and waveguide interfaces.
They Separate Signals, too
OMTs feature a winning design that lets these devices choose how to process signals best. When signals have been transmitted, they can combine but also separate these signals.
They function to separate the signals that you receive into particular parts. These are linear parts that you can find at the rectangular output ports. Where there’s high isolation, OMTs do the job between the polarisations.
When the products of OMTs are reversed, you will find two linear signals – orthogonal and polarised. You can combine these signals as well and create results in the circular port.
The result of the reversal will come in different polarisation effects. They may be elliptical, circular, or linear. This depends on the amplitude (of input signals) and the relative phase.