Analysis of quasi-optical power combiners by vector field measurements at 150 GHz
| Autor: | R. Judaschke, J. Weinzierl |
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| Jazyk: | German<br />English |
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Advances in Radio Science, Vol 5, Pp 419-425 (2007) |
| Druh dokumentu: | article |
| ISSN: | 1684-9965 1684-9973 |
| Popis: | A Two-dimensional quasi-optical power dividing/combining circuit has been experimentally investigated at 150 GHz. It consists of a rectangular horn antenna array as receiving/transmitting unit and a dual offset reflector setup to match the radiated field(s) to the pattern of the receiving antenna(s). To verify both design and adjustment of the quasi-optical circuit, electric field scans have been performed in selected planes and volumes of the setup. To measure the spatial electric field distribution, a vector field measurement system has been developed which operates in the frequency range between 148 GHz and 152 GHz. Excellent agreement between calculated and measured results for a horn antenna array approve the predicted results calculated under the physical optics approximation. Measured power dividing/combining efficiency of the passive structure of 63% for an inter-element spacing of 10$ lambda$ indicates that the power combining principle is a suitable method up to submillimeter wavelengths. |
| Databáze: | Directory of Open Access Journals |
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