Title :
A self-diplexing quasi-optical magic slot balanced mixer
Author :
Tong, Cheuk-Yu Edward ; Blundell, Raymond
Author_Institution :
Harvard-Smithsonian Center for Astrophys., Cambridge, MA, USA
fDate :
3/1/1994 12:00:00 AM
Abstract :
Drawing on the principles of operation of the magic tee balanced mixer, a quasi-optical magic slot balanced mixer is proposed. The mixer exploits a diametrically fed annular slot radiator which radiates two orthogonal polarizations which are used as signal and local oscillator input ports. The idea has been tested at microwave frequencies. The measured radiation impedances, radiation patterns and conversion efficiency show that reasonable performance is readily obtained over a 30% bandwidth and that this quasi-optical balanced mixer is suitable for submillimeter wave applications
Keywords :
microwave devices; mixers (circuits); submillimetre wave devices; waveguide components; annular slot radiator; balanced mixer; conversion efficiency; diametrically fed radiator; magic slot; microwave frequencies; orthogonal polarizations; quasi-optical mixer; radiation impedances; radiation patterns; self-diplexing type; submillimeter wave applications; 1f noise; Bandwidth; Microwave measurements; Millimeter wave measurements; Millimeter wave technology; Optical noise; Optical receivers; Polarization; Superconducting device noise; Testing;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
