A low-noise, high-dynamic-range, digital receiver for radio astronomy applications: an efficient solution for observing radio-bursts from Jupiter, the Sun, pulsars, and other astrophysical plasmas below 30 MHz

V. B. Ryabov; D. M. Vavriv; P. Zarka; B. P. Ryabov; R. Kozhin; V. V. Vinogradov; L. Denis

doi:10.1051/0004-6361/200913335

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Volume 510 (February 2010)

A&A, 510 (2010) A16

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Table 1:

Characteristics of the digital receiver.
Input-output channels	2
ADC resolution, bits	16
ADC sampling frequency, MHz
(external/internal)	10 ... 130
Input bandwidth, MHz	1 ... 65
Input impedance, $\Omega$	50
Input signal amplitude (max), V	$\pm$ 1
SNR, dBFS	74
SFDR, dBc	>112
Noise floor, dBFS	-117
Effective number of bits (ENOB)	12
FFT window length / resolution bits	16 384 / 30
Time window shape	User-defined
	(default = Hanning)
Max. number of output frequency channels	8192
	(i.e., 32 MHz total band with 4 kHz resolution)
FFT window overlap	0%, 50%
Integration time	0.25 ... 128 ms
(time steps, $N_{\rm a}$ )	(2 ... 1024)
Accumulated values precision, bits	54
Output precision, bits	30
Complex FFT calculation time, $\mu$ s	114
	- Waveform
Output modes	- Power spectrum
	- Coherence
	(Cross-correlation spectrum)
Digital frequency down conversion	Optional

Source LaTeX | All tables | In the text

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