New broad-band 5-section microstrip-line directional coupler
Authors:
- M. AsaMAM. Asa
- 4 December 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 383-386
Abstract
A novel 2-18-GHz, 6-dB microstrip-line directional coupler has been realized using three semireentrant tight-coupling sections implemented into five coupling sections formed on Teflon substrate. The measured coupling coefficient of this coupler is in good agreement with theoretical values. The advantages of the semireentrant tight-coupling section are: (1) there is no need for bonding wires of air bridges; (2) the structure is convenient for connecting to other such couplers or to ordinary edge coupling sections; and (3) conventional synthesis techniques based on the concept of the even-mode and odd-mode field and of multisection couplers are applicable.<>Keywords
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