Abstract: Various embodiments of the present disclosure are directed towards a method for forming a varactor comprising a reduced surface field (RESURF) region. The method includes forming a drift region having a first doping type within a substrate. A RESURF region having a second doping type is formed within the substrate such that the RESURF region is below the drift region. A gate structure is formed on the substrate. A pair of contact regions is formed within the substrate on opposing sides of the gate structure. The contact regions respectively abut the drift region and have the first doping type, and wherein the first doping type is opposite the second doping type.

Abstract: Network service usage management systems and methods are disclosed. Associations between network services and network service user groups are used to enable usage of network services by members of the network service user groups. The network service user groups are independently and separately manageable, to form respective virtual extranets for instance. Actual usage of the network services may be controlled in accordance with the associations, and possibly also in accordance with respective group policies for the network service user groups. Network service user groups may be self-managed within an administrative domain in which service provider systems supporting the network services are located, or externally managed. Group and service information for externally managed groups may be exchanged between equipment that is within and outside an administrative domain.