The device which usually interfaces with two input waveguide ports and one output port; but actively guide Electro-Magnetic waves(EM waves) from one input port to the output port is called waveguide switch.
It is mainly used in switch over units in VSAT Hub or central stations in LNA and High Power amplifier systems. Refer RF Switch for more information.
Waveguide switch is available in various waveguide sizes. Following specifications need to
be consider for selection of the waveguide switch.
• Frequency range
• Isolation in dB
• Insertion Loss in dB
• Power handling capability (peak/average)
• Current consumption
• Switching time
Figure depicts waveguide switch sketch. As shown it is controlled using DC voltage applied. Various control voltage options are available. Switch can be placed either in position 1 or position 2 as shown.
RF Switch basics and applications along with manufacturers of RF switch refer following link:
For types of waveguide viz. rectangular & circular, waveguide propagation modes, impedance matching of waveguide read following waveguide tutorial.
waveguide basics tutorial
Manufacturers of waveguide components such as waveguide to coaxial adapter, coupler, flanges, gasket, tees, termination, shorts, isolator, circulator, horn antenna, attenuator, feed-thrus, bends, loads, twists, straights, pressure windows, transformers, sliding short circuits, fixed short circuits, sliding mismatches etc. visit following link.
Waveguide components manufacturer
Rectangular waveguide dimensions as per USA standard including frequency, broad dimension and narrow dimensions, visit following link.
Waveguide dimensions table
Waveguide Switch Manufacturers
General Atomics, www.ga.com