Waveguide directional coupler design tool

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10 Apr 2013 By using a special design the input power is divided between output and coupled port in a certain ratio named coupling factor. The required value for coupling factor P1/P3 defines the range of applications for directional couplers. Based on the application, coupling factor could be any value like 3, 6, 10, 15 Apr 2005 Waveguide directional couplers are widely used as power monitors in microwave systems and test equipment. An even more important set of applications makes use of the 90° phase difference between the output signals, making them ideal for antenna feed networks, and as hybrid junctions or couplers for By using a special design the input power is divided between output and coupled port in a certain ratio named coupling factor. The required value for coupling factor P1/P3 defines the range of applications for directional couplers. Based on the application, coupling factor could be any value like 3, 6, 10, 20 dB and even Experiment 5 — Coupler Design. For a 20 dB single section edge coupled line directional coupler, con- coupler. Its basic function is to sample the forward and reverse travelling waves through a transmission line or a waveguide. The common use of this element is to measure the power level of a transmitted or received frequency range from 4,7 to 11.0 Gc were carried out, and graphs drawn so that the results could be applied to practical situations. The graphs were used to design some ridge-waveguide directional couplers. Both cross-guide and broad-wall couplers were made in single-ridge waveguides and in double-ridge waveguides,. Directional Coupler Design Software for Microstrip, Stripline and Rectangular Waveguide. Introduction. In today's microwave practice, the directional coupler is a virtually indispensable measurement tool. It pro- vides a simple, convenient, and accurate means for sampling microwave energy without moving parts and without the need for adjustments. Unlike other meth- ods of power sampling involving probes or termination. (vestigial arm). In this paper the criteria for the design of loop couplers of any length are considered, and their application to either coaxial line or waveguide are dis- cussed. The theoretical basis for design is established by first con- sidering the theory of coupled transmission lines. Several designs which utilize. Directional couplers can be realized in microstrip, stripline, coax and waveguide. They are used for sampling a signal, sometimes both the incident and reflected waves (this application is called a reflectometer, which is an important part of a network analyzer). Directional couplers generally use the distributed properties of A compact, high-directivity, weak-coupling directional coupler with coaxial–coplanar waveguide structure and diamond-shaped coupling slot was developed at L band for a high-power microwave measurement by both theoretical analysis and experiments. The relation between the dimension of the coupling slot and the