Title :
Broadband reflector fed by integrated lens antenna with frequency constant directivity
Author :
Lima, Eduardo B. ; Costa, Jorge R. ; Fernandes, Carlos A.
Author_Institution :
Inst. de Telecomun., IST, Lisbon, Portugal
Abstract :
Bolometers are the most common detectors in submillimeter wave radio telescopes. When the bolometers are integrated with broadband antennas it is possible to achieve more than 100% broadband receivers. The bolometer is placed at the terminals of a single planar metallization broadband antenna (like spiral or log-periodic) that is printed directly at the base of a high dielectric lens. The lens forces the printed element radiation pattern to become predominantly directed into the first reflector of the quasi-optical system of a radio telescope.
Keywords :
bolometers; broadband antennas; lens antennas; radio receivers; broadband antennas; broadband receivers; broadband reflector; frequency constant directivity; integrated lens antenna; printed element radiation pattern; quasi-optical system; radio telescope; submillimeter wave radio telescopes; Antenna radiation patterns; Broadband antennas; Broadband communication; Feeds; Frequency measurement; Lenses;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-4967-5
DOI :
10.1109/APS.2010.5562210