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E- and H- plane coupled power combining arrays of active patches with line transformer and transistor oscillator

izvorni znanstveni rad

izvorni znanstveni rad

E- and H- plane coupled power combining arrays of active patches with line transformer and transistor oscillator

Vrsta prilog u časopisu
Tip izvorni znanstveni rad
Godina 2002
Časopis Automatika : časopis za automatiku, mjerenje, elektroniku, računarstvo i komunikacije
Nadređena publikacija Automatika
Volumen 43
Svesčić 3-4
ISSN 0005-1144
EISSN 1848-3380
Status objavljeno

Sažetak

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.

Ključne riječi

antenna; active antenna; microstrip antenna; antenna array; spatial power combining; injection locking