Technology Development for a next-generation VLA

NRC 15m Composite Antenna Concept

15m Single-Piece Composite Antenna Concept by NRC Canada.

Integrated Receiver 1

Integrated Receiver Development at the NRAO CDL.

In collaboration with the community, the ngVLA project is conducting research and development of key enabling technologies for the ngVLA.

These focused development projects will enable NRAO to ensure that the resulting design is both low cost and low technical risk. While a portion of this research and development will be conducted within the Observatory, NRAO will engage the broader technical community with sub-contracts for development studies, supporting intellectual property development at both commercial firms and higher education institutions.

A set of thirteen technical community studies were proposed and approved in 2016. These span a broad range of topics from receiver development, cryogenics, antenna reflector and mount designs, to correlator architectures and low-frequency commensal systems.

White Rabbit

Modified White Rabbit Time and Frequency Distribution system with low-phase noise phase-locked oscillator and low jitter daughter-board by OPNT B.V.

NRC W-band Feed

W-band axially corrugated feed horn by NRC Canada.

Work in 2018 and 2019 will focus on feed development, high-reliability and high-efficiency cryogenic system design, integrated receiver development MMIC and ASIC technology, Water Vapor Radiometry for phase calibration, and time and frequency distribution systems that eliminate the need for multiple primary frequency references.

In parallel to these technology development activities, the project will advance the design of the ngVLA concept, formalizing the L0 Science Requirements, supporting L1 System Requirements, and the System Architecture. We will also advance key elements of the design, such as refinements to the receiver noise model, the cryogenic thermal model, and algoriithmic development.