Multiplexers
Apollo has an extensive library of standard multiplexers, and can design and build units with specific bandwidth, frequency, power and mechanical envelope requirements. Using cascaded frequency-combining diplexers, our MUXs have been optimized and fit into flat frames, minimizing waveguide runs and the associated insertion losses. The frames can be mounted anywhere relative to the amplifiers. Apollo was the first company to design and build a DBS MUX for the satellite broadcast industry, and recently built a water cooled output MUX for the European Space Agency. Let us put our expertise to work for you.
Features
MANIFOLD MULTIPLEXERS
Manifold multiplexers are devices in which separate filters are tuned to the center frequency of the required channel and are coupled into a common waveguide. Apollo has built several varieties of multiplexers, customized to meet specific requirements in various bands. For applications that require this type of multiplexing, Apollo will design the appropriate filters with the required selectivity, in-band ripple, and number of cavities in order to minimize the total loss and group delay variation.
FILTER-CIRCULATOR MULTIPLEXERS
Filter-circulator multiplexers are devices in which separate filters are tuned to the center frequency of the required channel and are coupled using circulators. The primary advantage of these multiplexers is the directional signal flow. The signals proceed from input to output without interacting, thus preventing modular conception. This design minimizes the filter selectivity and produces a lower loss filter than the manifold multiplexer. Our advanced circulator design has overcome the conventional limitations in power handling.
Features
- Advanced filter/diplexer design produces lower loss and flatter response
- Improved group delay and gain slope for relaxed time delay equalization requirements
- 3rd order inter-modulations generated by amplifiers are reflected by filters and absorbed by loads
- Higher power capability
- Low system VSWR
- Modular construction – filter/diplexers may be added or reconfigured without performance loss
- Forced air or water cooled
- Easy to install – entire system can be supported using only a few bolts
Manifold multiplexers are devices in which separate filters are tuned to the center frequency of the required channel and are coupled into a common waveguide. Apollo has built several varieties of multiplexers, customized to meet specific requirements in various bands. For applications that require this type of multiplexing, Apollo will design the appropriate filters with the required selectivity, in-band ripple, and number of cavities in order to minimize the total loss and group delay variation.
FILTER-CIRCULATOR MULTIPLEXERS
Filter-circulator multiplexers are devices in which separate filters are tuned to the center frequency of the required channel and are coupled using circulators. The primary advantage of these multiplexers is the directional signal flow. The signals proceed from input to output without interacting, thus preventing modular conception. This design minimizes the filter selectivity and produces a lower loss filter than the manifold multiplexer. Our advanced circulator design has overcome the conventional limitations in power handling.