A Pareto Approach to Lossy Matching
Technical rept. no. 1942
SPACE AND NAVAL WARFARE SYSTEMS COMMAND SAN DIEGO CA
Pagination or Media Count:
This report originated in the In-House Laboratory Independent Research Program of SPAWAR Systems Center San Diego and continues the migration of Hinfinity Engineering into fleet applications. As more communication systems are installed and radar cross-section requirements become stricter, shipboard space has become extremely limited and new antenna designs must be considered. As antenna size is reduced, a tradeoff between efficiency and bandwidth is forced. This report offers a multiobjective solution where transducer power gain is traded to reduce the large reflection at the feed of the antenna. Although lossy matching is an anathema for standard antenna matching, trading gain against reflection is rational design objective for a small antenna provided the corresponding Pareto front can be computed. This report offers several techniques to compute the Pareto front for a given lossy topology random sampling, orbit techniques based on lossless matching, and the adaptation of the Hinfinity techniques. These Pareto front computations readily adapt to other lossy matching tradeoffs and offer a general approach to lossy matching.
- Electrical and Electronic Equipment
- Radiofrequency Wave Propagation
- Marine Engineering