Design of Compact Directional Couplers for UWB Applications

  title={Design of Compact Directional Couplers for UWB Applications},
  author={A. M. Abbosh and M. E. Bialkowski},
  journal={IEEE Transactions on Microwave Theory and Techniques},
This paper presents a simple design method for a class of compact couplers, which offer coupling in the range of 3-10 dB over an ultra-wide frequency band from 3.1 to 10.6 GHz. The proposed couplers are formed by two elliptically shaped microstrip lines, which are broadside coupled through an elliptically shaped slot. Their design is demonstrated for a 3-, 6-, and 10-dB coupling assuming a 0.508-mm-thick Rogers RO4003C substrate. Results of simulation and measurements show that the designed… CONTINUE READING
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