RF tuning element

摘要: A device for tuning a circuit includes substrate, transmission line on the substrate that first and second conductors coupled to be tuned, movable short-circuit varying impedance presents tuned. The dielectric layer disposed atop distributed shorting element in form of conductive member is configured slid along at least portion layer. span define opening spans two so sections separated by opening. combine with low line, combines high section intermediate sections. Each have length approximately one-quarter wavelength, thus providing periodic variation impedance. That enhances reflection rf power.