Title :
Broadband Back-End Module for Radio-Astronomy Applications in the Ka-Band
Author :
Cano, Juan Luis ; Aja, Beatriz ; Villa, Enrique ; de la Fuente, L. ; Artal, Eduardo
Author_Institution :
Dept. Ing. de Comun., Univ. de Cantabria, Santander
Abstract :
This paper presents the design, simulation and measurement of a broadband back-end module (BEM) for radio-astronomy applications in the Ka-band. It is a direct conversion receiver based on low noise amplification, band pass filtering and Schottky diode detection. System simulations are based on individual linear-subsystems S-parameters measurements together with non-linear detector model. Measurements show more than 30 dB of RF gain over the 26 to 36 GHz band with a noise figure below 3.9 dB. Detected voltage is in the range 1-10 mV which meets the application specifications.
Keywords :
S-parameters; Schottky diodes; band-pass filters; modules; radio receivers; radioastronomy; S-parameters; Schottky diode detection; band pass filtering; broadband back-end module; direct conversion receiver; frequency 26 GHz to 36 GHz; linear-subsystems; low noise amplification; noise figure; nonlinear detector model; radio-astronomy; voltage 1 mV to 10 mV; Band pass filters; Detectors; Filtering; Gain measurement; Noise figure; Noise measurement; Radio frequency; Scattering parameters; Schottky diodes; Voltage;
Conference_Titel :
Microwave Conference, 2008. EuMC 2008. 38th European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-006-4
DOI :
10.1109/EUMC.2008.4751653
