ISSN:
1572-9508
Keywords:
cosmic microwave background
;
microwave instrumentation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We have produced a prototype broadband, low-sidelobe conical corrugated feed horn suitable for measurements of the Cosmic Microwave Blackground (CMB) radiation in the frequency band 120–150 GHz. The antenna is a first prototype for the Low Frequency Instrument array in ESA's PLANCK mission, a space project dedicated to CMB anisotropy mesurements in the 30–900 GHz range. We describe the fabrication method, based on silver electro-formation, and present the two-dimensional antenna beam pattern measured at 140 GHz with a milimeter-wave automated scalar test range. The beam has good symmetry in the E and H planes with a far sidelobe level approaching –60 dB at angles ∼ 80°. An upper limit to the return loss was measured to be –21 dB.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008019826435
