Wide-band high linearity active dipole for low frequency radio astronomy

Autor:	Leonid G. Sodin, Peter L. Tokarsky, I. S. Falkovich, Dmitriy V. Mukha, N. N. Kalinichenko, A. A. Konovalenko, I. N. Bubnov, Sergey L. Rashkovskii, A. A. Gridin
Rok vydání:	2011
Předmět:	Physics Noise temperature Physics::Instrumentation and Detectors business.industry Preamplifier Astronomy and Astrophysics Noise figure law.invention Dipole Optics Space and Planetary Science law Dipole antenna Antenna noise temperature business Cosmic noise Noise (radio)
Zdroj:	Experimental Astronomy. 32:127-145
ISSN:	1572-9508 0922-6435
Popis:	We have developed an active dipole that is intended for use in new generation low frequency array applications. The preamplifier of the active dipole has very high linearity (input IP2 = 70 dBm, input IP3 = 31 dBm) and low noise temperature (100–360 K). The frequency dependence of the dipole impedance and the match between the dipole and preamplifier have been optimized to achieve Galactic noise limited operation. The ratio between the antenna temperature due to Galactic noise and the noise temperature of the preamplifier is 10 ± 1.5 dB over the whole 10 to 70 MHz range. The total cost of the active cross-dipole is 220 euro.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::939b8d3033df3a3764164d582459dad8 https://doi.org/10.1007/s10686-011-9256-z Zobrazit plný text záznamu Plný text ve formátu PDF