Efficient Amplifier Design

Trapped in the maze of harmonic control? Stuck in endless optimization loops? Get out of the trap with maximum-efficiency lines and the extensive impedance-matching capabilities provided in the Ampsa ADW. 

Ampsa provides its customers with a structured amplifier design process for robust high performance RF and microwave amplifiers. 

Training can be provided on the software, as well as amplifier design in general and the wizards can be customized to improve the design flow for specific customers. Source code licenses are now also available.

In addition to the option to buy a permanent license for the ADW, annual subscription options are now also provided (see the Version 18 price list provided under Downloads). Rates start at US $2 750 per user per year.

Version 18 of the Ampsa ADW has been released. Clipping theory has been developed to a fully useful form in Version 18 of the ADW: The load terminations presented by a matching network are mapped automatically to the intrinsic reference plane of the transistor by using power parameters and the harmonic content is estimated from continuous mode theory. (Up to five harmonics are considered.) With this information, dynamic load lines can be plotted in the ADW. Four or five boundary lines can be used to define boundaries for the dynamic load lines in the intrinsic I/V-plane. The fifth boundary is used to model the upper left corner in the transistor knee. Hard clipping on one of the boundary lines is assumed, but allowance is made for compression too. Search and optimization features for the harmonic content are provided to improve the fit with the performance in a harmonic balance simulator or in actual measurements. Fundamental-frequency load terminations with ideal harmonic terminations for the specified class of operation (FFLL) are used during synthesis. When a circuit is analyzed or optimized, the option to use the actual terminations presented by the matching network (HrLL) is also provided.