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The hybrid ring coupler, also called the rat-race coupler, is a four-port 3 dB directional coupler consisting of a 3λ/2 ring of transmission line with four lines at the intervals shown in figure 12. Power input at port 1 splits and travels both ways round the ring.
A slow-wave coupler is a directional coupler consisting of microstrip lines in which there is a corrugation in the inner edges of the transmission lines where the coupling takes place. The objective is to reduce the phase velocity of the odd mode of the coupled lines to match that of the even mode, and thereby to improve the isolation and ...
Coupler (piping), also called a (joist) short length of pipe with two female threads; Coupler, a device used on a pipe organ or harpsichord to allow a player to play multiple divisions at once, by means of "coupling" a division to another at either sub, super, or octave pitches; Coupler, a tap valve, for controlling the release of beer out of a keg
Microstrip sawtooth directional coupler, a variant of the coupled-lines directional coupler [40] A directional coupler is a four-port device which couples power flowing in one direction from one path to another. Two of the ports are the input and output ports of the main line.
During his career he filed 8 separate patents, spanning four decades, all related to directional couplers and similar technologies. In 1979 he received a patent based upon the idea of increasing the directivity of a coupler by building the central couplers in a unique configuration for a TEM mode strip-line directional coupler.
A Moreno coupler, a type of waveguide directional coupler. Directional couplers have four ports. This one has one port permanently terminated internally with a matched load, so only three ports are visible. The ports are the openings in the centres of the waveguide flanges
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