| 摘要 |
<p>A flexible coaxial cable (8) capable of high frequency signal propagation formed from a multilayer configuration having a plurality of adjacent signal traces (40, 42, 44, 46) etched in dielectric material (14, 82) and surrounded by a protective ground layer (16). Selected ones of the signal traces (40, 42, 44, 46) are designated to be conducting signal lines (60). A 360-degree signal return line (74) is formed around each of the designated conducting signal traces utilizing signal traces adjacent those serving as conducting signal lines as part of the return line conductor. A 360-degree shield (104) is also formed around the return line (74), again employing selected signal traces as part of the shield. The return line (74) and shield (104) are created using photo and laser etching, chemical milling and electroplating techniques. The cable (8) allows electrical signal propagation in the gigahertz frequency range without appreciable signal loss and provides high density packaging. The flexible nature of the cable (8) and its structure combine to provide an even variable standing wave ratio.</p> |
