论文信息 - STEPPED COUPLED LINES FOR BANDWIDTH ENHANCED BALUN DESIGN

STEPPED COUPLED LINES FOR BANDWIDTH ENHANCED BALUN DESIGN

1. Abstract This paper presents a practical design method for the stepped impedance coupled lines balun that combined effective and simple way to increase the balanced output bandwidth of coupled line of the conventional planar Marchand balun. New structure of collateral multi-section with quarter wavelength coupled lines balun is developed to increase at least 40% balanced bandwidth and perfect return loss than the traditional planar Marchand coupled lines balun, hence, the structure of the designed planar microstrip circuit is fairly simple, practical and easily fabricated. The measured results of the design show good agreements with those simulated data.

Jwo-Shiun Sun | Guan-Yu Chen

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