Abstract: A single-ended mixer having a mismatched, high termination impedance is disclosed. The termination impedance can be mismatched by at least one order of magnitude higher than the standard impedance of a given design environment, such as a 50 Ohm environment for a radio frequency (RF) circuit. The termination impedance can be provided in close physical proximity to the mixer core of the single-ended mixer to allow a suitable bandwidth of operation.

Abstract: A computer-based system facilitates providing design information to customers or users at remote locations around the world. A design module preferably utilizes different types of information from the customer and automatically generates elevator design information for the customer's consideration. An example design module includes a first module that makes elevator system design determinations based upon expected passenger traffic patterns. Another module generates elevator system design information based upon building characteristics. A third module generates design information based upon dimensional information regarding the hoistway in which the elevator will be installed. The system preferably provides design information to the user in the form of budgeting or pricing information, written specifications and drawings as desired.