Analysis and application of nonleaky uniplanar structures with conductor backing

Self and mutual admittance of CPW‐FED slots on conductor‐backed two‐layer substrate

“…Since second-resonance slots have self-impedances that lie on relatively stationary (i.e., "flat'') portions of their self-impedanceagainst-frequency curves [5], these slots are preferable to firstresonance slots for use in arrays. Figures 5 and 6 show mutual conductance G 12 and mutual susceptance B 12 against broadside distance d for twin slots with W ϭ 0.0133 0 ϭ 0.4 mm and half-lengths L of 0.85 L res,2 , 0.95 L res,2 , L res,2 , and 1.1 L res,2 (L res,2 is the half-length of the corresponding isolated second-resonant slot).…”

Radiation efficiency and impedance bandwidth of conductor‐backed CPW‐FED slot dipole antenna with two‐layered dielectric substrate

“…Furthermore, antennas discussed in this study are designed to operate within the first flat resonance region because of the better matching possibilities compared to the steep regions (cf. [11]); the antenna of Figure 2 thus has an operating frequency of 2.4 GHz. The form of the electric field in the radiating slot has been thoroughly treated elsewhere [4,5,11].…”

“…[11]); the antenna of Figure 2 thus has an operating frequency of 2.4 GHz. The form of the electric field in the radiating slot has been thoroughly treated elsewhere [4,5,11]. Since optimally matched antennas are of interest and because it is known that input impedance can be adjusted by varying radiating slot width W [5], this dependency was investigated first for fixed half-length and substrate layer heights (L ϭ 53.8 mm; h 1 ϭ 0.787 mm; h 2 ϭ 15 mm).…”