Symmetrical and non-symmetrical coaxial-strip 3 dB directional couplers of decimetric frequency band
DOI:
https://doi.org/10.3103/S0735272709090015Abstract
Numerical modeling and synthesis results of symmetrical and non-symmetrical coaxial-strip 3 dB directional couplers (DC) for the frequency band of 470…630 MHz possessing low ohmic loss, good impedance matching (VSWR < 1.1), smooth characteristics in the frequency range of more than 30% and possibility of operating under the power levels of 2 kW and more are presented. Theoretical results are confirmed by the data of experimental research of 3 dB coaxial-strip power divider with the 90 degrees phase shift between its outputs, which is built on the basis of a non-symmetrical coaxial-strip DC and is intended for the use in transmitting television antenna arrays of the decimetric wavelengths range.
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