### Abstract

The upper and lower bounds on the actual solution of any microwave structure is of general interest. The purpose of this letter is to compare some calculations using the mode-matching and finite-element methods, with some measurements on a 180 degrees ridge waveguide insert between standard WR62 rectangular waveguides. The work suggests that the MMM produces an upper bound, while the FEM places a lower bound on the measurement. (C) 2001 John Wiley & Sons, Inc.

Original language | English |
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Pages (from-to) | 260-261 |

Number of pages | 2 |

Journal | Microwave and Optical Technology Letters |

Volume | 31 |

Publication status | Published - 2001 |

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## Cite this

Goussetis, G., Budimir, D., & Helszajn, J. (2001). Upper and lower bounds of 180 degrees unit element of a ridge waveguide: Calculations and measurements.

*Microwave and Optical Technology Letters*,*31*, 260-261.