一种新型圆形微屏蔽共平面波导的基本特性

提出了一种新型圆形微屏蔽—脊导体共平面波导。基于假设只有纯ＴＥＭ波传播和零色散的情况下，通过保角变换得到了特性阻抗和有效介电常数的闭合形式的解析表达式。这种新型波导大大降低了传统共平面波导和微带线的辐射损耗和信号线边缘的电流，并且不需要打孔或空桥接地

Basic Characteristics of A New Circular shaped Microshield Coplanar Waveguide

In this paper,a new type of circular shaped microshield and conductor backed coplanar waveguide (CPW) is proposed.Analytical closed form expressions for characteristic impedance and effective dielectric constant for the new line are obtained using conformal mapping method under the assumption of pure TEM propagation and zero dispersion.The new waveguide proposed by this paper and reduce radiation to much less than the conventional CPW and microstrip,and reduce the current concentration at both the edges of the signal,and has no need for viaholes or air bridges for ground equalization and a wide range of impedances.