Infinifactory power coupler1/4/2024 Often the isolated port is terminated with an internal or external matched load which would typically be 50 ohms. Ports 3 and 4 may even have smaller connectors to distinguish them from the main line ports of the RF coupler. The other ports on the directional coupler are normally more suited for lower powers as they are only intended to carry a small proportion of the main line power. Normally this may be more suited to carry high power levels and it may have larger RF connectors, if it is a unit with RF connectors. Typically the main line is the one between ports 1 and 2. Terms in brackets refer to alternative names for the ports that may be seen on occasions- they give a little more explanation of the function of the coupler port than just the name. Isolated (Port 4, Reverse coupled port).RF directional coupler basicsĪn RF directional coupler has four ports and these are normally defined as in the list below: They may also be contained within a variety of packages from blocks with RF connectors, or solder pins, or they may be contained on a substrate carrier, or they may be constructed as part of a larger unit containing other functions. RF directional couplers can be implemented using a variety of techniques including stripline, coaxial feeder and lumped or discrete elements. In this way, power entering the output port is coupled to the isolated port but not to the coupled port. One key feature of directional couplers is that they only couple power flowing in one direction. RF directional couplers are electronic items that couple a defined amount of the electromagnetic power in a transmission line to a port enabling the signal to be used in another circuit.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |