Abstract

A horn antenna with low sidelobe response has been fabricated for a rocket-borne observation of the diffuse brightness of the sky at submillimeter wavelengths. The antenna consists of a Winston concentrator which defines the field of view and a flared baffle which minimizes diffraction. The sidelobe response for λ = 337 μm was measured to be <10⁻⁹ at an angle of 70° from the optical axis. Calculations are reported which illustrate the contributions of diffraction and scattering to the sidelobe response.

© 1987 Optical Society of America

Heat trap with flare as multimode antenna

John C. Mather, Marco Toral, and Hamid Hemmati
Appl. Opt. 25(16) 2826-2830 (1986)

Rocket-borne submillimeter radiometer

A. E. Lange, S. Hayakawa, T. Matsumoto, H. Matsuo, H. Murakami, P. L. Richards, and S. Sato
Appl. Opt. 26(2) 401-409 (1987)

Fabrication and characterization of a three-dimensional feed-horn infrared antenna for an infrared detector

Kuntae Kim, Yong-Hee Han, Sung Moon, Jung-Ho Park, and Hyun-Joon Shin
Appl. Opt. 43(30) 5594-5599 (2004)

Cooled baffle system for spaceborne infrared telescopes

J. J. Bock, A. E. Lange, H. Matsuhara, T. Matsumoto, T. Onaka, and S. Sato
Appl. Opt. 34(13) 2268-2277 (1995)

Subcompact field optics for far-infrared/submillimeter photometers

Donald Hamilton
Appl. Opt. 25(4) 537-539 (1986)