Naslov
Voltage Controlled Self-Oscillating Microstrip Patch Antenna

Autori
Bartolić, Juraj ; Sanford, John ; Šipuš, Zvonimir ; Bonefačić, Davor

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 25th European Microwave Conference / - Brighton : Nexus Media Limited, 1995, 316-319

Skup
25th European Microwave Conference

Mjesto i datum
Bologna, Italija, 04.09.1995. - 07.09.1995

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
active antennas; microstrip antennas; self-oscillating antennas; Gunn diode oscillator; phase locking

Sažetak
An active rectangular microstrip patch antenna for quasi-optical power combining arrays is hereby described. Part of the patch metallization was removed to form a rectangular opening where a Gunn diode was placed. This modification lowered the Q and allowed the oscillating patch to perform VCO capabilities. Patch parameters were optimized using a moment method procedure. A tuning range of more than 300 MHz at 9.85 GHz and EIRP of 208 mW was obtained. A clear spectrum with no spurious components of the free running oscillating antenna was observed. Injection locking experiments were performed. At 9 V bias, a locking gain of 40.9 dB with locking bandwidth of 5.9 MHz was obtained. Radiation patterns in E and H plane were measured. Low levels of cross-polarisation were observed.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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