Original scientific paper
E- and H-Plane Coupled Power Combining Arrays of Active Patches with Line Transformer and Transistor Oscillator
Davor Bonefačić
Juraj Bartolić
Abstract
A patch antenna integrated with a transistor oscillator and a line impedance transformer has been used as a building element for two-element power combining arrays. Arrays coupled in E and H planes have been theoretically and experimentally investigated. The inter-element distance in the arrays has been optimized to obtain in-phase operation and mutual injection locking. High EIRP and excellent power combining efficiency are measured. The measured spectra are clean and stable. Electronic beam scanning is demonstrated. The co-polarization and cross-polarization radiation patterns are measured for the case of broadside radiation and scanned positions of the main beam. The cross-polarization levels are low.
Keywords
antenna; active antenna; microstrip antenna; antenna array, spatial power combining; injection locking
Hrčak ID:
6737
URI
Publication date:
20.12.2002.
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