Next Article in Journal
A Novel Electrocardiogram Biometric Identification Method Based on Temporal-Frequency Autoencoding
Previous Article in Journal
Wearable Triband E-Shaped Dipole Antenna with Low SAR for IoT Applications
Open AccessArticle

The Room Temperature Multi-Channel Heterodyne Receiver Section of the PHAROS2 Phased Array Feed

1
National Institute for Astrophysics (INAF), Astronomical Observatory of Cagliari, Via della Scienza 5, 09047 Selargius, Italy
2
National Institute for Astrophysics (INAF), Institute of Radio Astronomy, Via P. Gobetti 101, 40129 Bologna, Italy
3
Italian Space Agency (ASI), Via del Politecnico snc, 00133 Roma, Italy
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(6), 666; https://doi.org/10.3390/electronics8060666
Received: 9 May 2019 / Revised: 24 May 2019 / Accepted: 6 June 2019 / Published: 12 June 2019
(This article belongs to the Section Microwave and Wireless Communications)
This paper describes the design, fabrication, and test results of a room temperature multi-channel heterodyne receiver operating across the 2.3–8.2 GHz radio frequency (RF) band. Such a “Warm Section” (WS) receiver is part of phased arrays for reflector observing systems 2 (PHAROS2), a C-band phased array feed (PAF) demonstrator with digital beamformer for radio astronomy application. The WS receiver is cascaded to the PHAROS2 cryostat, which includes an array of Vivaldi antennas with low noise pre-amplification stages. The WS can handle up to 32 RF signals and, for each of them, realizes the operations of filtering, RF amplification and down-conversion from the RF to the 375–650 MHz intermediate frequency (IF). Also, the WS incorporates an IF-to-optical signal conversion through analogue wavelength division multiplexing IF over fiber (IFoF) and fiber-optic transmitters (OTXs). The 32-channel WS receiver consists of four eight-channel WS RF/IF modules, one local oscillator (LO) splitter module and one monitoring and control module, all hosted in a standard 6U × 19-inch rack. View Full-Text
Keywords: phased array feed; radio astronomy; multi-channel receiver; heterodyne phased array feed; radio astronomy; multi-channel receiver; heterodyne
Show Figures

Figure 1

MDPI and ACS Style

Navarrini, A.; Scalambra, A.; Rusticelli, S.; Maccaferri, A.; Cattani, A.; Perini, F.; Ortu, P.; Roda, J.; Marongiu, P.; Saba, A.; Poloni, M.; Ladu, A.; Schirru, L. The Room Temperature Multi-Channel Heterodyne Receiver Section of the PHAROS2 Phased Array Feed. Electronics 2019, 8, 666.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop