Some experiences with resonant cavity antennas-oscillators

Hristov, H.D.; Gatzov, I.P.; Urumov, J. R.; Kirov, G. S.; Ivanov, T.

doi:10.1109/aps.1993.385327

Cited by 1 publication

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Early work on the power combining in 3D round cavity antenna-oscillators is found in [20]. These are X-band single-cavity and double-cavity antenna-oscillators containing Gunn-diodes integrated in half-loop feeds, where power combining efficiency is bigger than 80% and aperture radiation efficiency is 40-50% for the two-cavity and bigger than 60% for the single-cavity antenna oscillators.…”

Section: Introductionmentioning

confidence: 99%

Radiation Characteristics of 3D Resonant Cavity Antenna with Grid-Oscillator Integrated Inside

Haralambiev

Hristov

2014

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

A three-dimensional (3D) rectangular cavity antenna with an aperture size of 80 mm×80 mm and a length of 16 mm, integrated with a four-MESFET transistor grid-oscillator, is designed and studied experimentally. It is found that the use of 3D antenna resonant cavity in case of small or medium gain microwave active cavity antenna leads to effective and stable power combining and radiation. The lack of lateral cavity diffraction and radiation helps in producing a directive gain of about 17 dB and radiation aperture efficiency bigger than 75% at a resonance frequency of 8.62 GHz. Good DC to RF oscillator efficiency of 26%, effective isotropic radiated power (EIRP) of 5.2 W, and SSB spectral power density of −82 dBc/Hz are found from the measured data. The 3D antenna cavity serves also as a strong metal container for the solid-state oscillator circuitry.

show abstract

Section: Introductionmentioning

confidence: 99%