## Abstract

A numerical analysis technique is required for the optimal design of H-plane waveguide circulator. A hybrid finite element method is used which is a combination of the finite element method and the boundary element method. In the shape optimization method, the positions of nodes, that compose the shape of a geometry, are chosen as design variables. The objective function is defined as a function of design and state variables and the total derivatives are calculated with respect to the design variables. The design sensitivity analysis is used to obtain the derivatives. Adjoint variables are used to overcome the difficulty in inverting the system matrix and the steepest descent algorithm is used for updating the design variables.

Original language | English |
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Pages (from-to) | 506-509 |

Number of pages | 4 |

Journal | AP-S International Symposium (Digest) (IEEE Antennas and Propagation Society) |

Volume | 1 |

State | Published - 1997 |

Event | Proceedings of the 1997 IEEE Antennas and Propagation Society International Symposium. Part 1 (of 4) - Montreal, Can Duration: 13 Jul 1997 → 18 Jul 1997 |