Cryogenic LNA and RF Solutions for Radio Astronomy
Celestia TTI is a world-renowned supplier of cryogenic Low Noise Amplifiers (Cryo LNAs) and warm LNAs based on InP and GaAs technologies for radio astronomy and deep space applications. With thousands of cryogenic units delivered to leading observatories and research institutions worldwide, our amplifiers set the standard for noise performance, stability and reliability in the most demanding scientific environments.
Beyond amplifiers, Celestia TTI develops complete RF front-end systems including feeders, polarisers, orthomode transducers (OMTs), cryostats, SSPAs, frequency converters and monitoring and control systems, as well as turnkey geodetic VLBI receivers that integrate all subsystems into a single, field-proven solution.
Radio Astronomy Product Portfolio
Cryogenic Low Noise Amplifiers
Our extensive cryogenic LNA portfolio covers frequencies from UHF-S band through W band, delivering state-of-the-art noise figures at cryogenic temperatures down to 4 K. Each module is designed for exceptional gain stability, phase stability and long-term reliability — critical requirements for radio astronomical observations where integration times can span hours or days.
- W-band Cryo LNAs — Cutting-edge performance for millimetre-wave astronomy and atmospheric science.
- Q-band Cryo LNAs — Optimised for the 33–50 GHz range used in next-generation radio telescope arrays.
- K-Ka band Cryo LNAs — Wideband solutions for versatile astronomical receiver systems.
- C to X-band Cryo LNAs — Proven workhorse amplifiers for centimetre-wave radio astronomy.
- S-band and UHF-S Cryo LNAs — Low-frequency solutions for pulsar timing, hydrogen line observations and VLBI.
Warm LNAs for Radio Astronomy
For applications where cryogenic cooling is not required or practical, our wideband warm LNAs deliver excellent noise performance at ambient temperature, suitable for array elements, monitoring receivers and auxiliary observation systems.
RF Passive Components
Celestia TTI manufactures a complete range of RF passive components for radio astronomy receiver systems:
- Feeders — Precision-engineered antenna feed systems optimised for illumination efficiency and low spillover.
- Polarisers — Circular and linear polarisation conversion with low axial ratio across wide bandwidths.
- Orthomode Transducers (OMTs) — Dual-polarisation separation with high isolation for simultaneous observation of both polarisation states.
Cryostats
Custom and laboratory cryostat solutions with volumes up to 1 m³ and cryogenic temperatures down to 4 K, designed for housing LNA modules, filters and other cryogenic components in radio telescope receiver cabins.
Turnkey VLBI Receivers
Celestia TTI designs, manufactures, installs and commissions complete VLBI (Very Long Baseline Interferometry) receiver systems for geodetic and astronomical applications. These highly integrated receivers combine cryogenic LNAs, feeds, frequency conversion and monitoring electronics into a single package, reducing on-site integration time and ensuring consistent performance across VLBI networks.
Deep Space Applications
Deep Space Network Ground Stations: Ultra-low-noise receive systems for deep space telemetry, featuring cryogenic LNA front-ends that maximise sensitivity for weak signals from interplanetary spacecraft at distances measured in astronomical units.
Radio Telescope Arrays: Scalable LNA and receiver solutions for next-generation radio telescope arrays, where thousands of identical, highly stable amplifier modules are required to achieve the collecting area and sensitivity needed for breakthrough astronomical science.
Geodetic VLBI: Turnkey receiver systems that support the global geodetic VLBI network, contributing to Earth orientation measurements, reference frame maintenance and fundamental astrometry with millimetre-level precision.
Quantum Computing: Cryogenic amplifier technology adapted for quantum computing readout chains, where ultra-low noise at millikelvin temperatures is essential for high-fidelity qubit measurement.
Heritage and Track Record
Celestia TTI cryogenic LNAs are installed at major radio observatories and research facilities around the world. Our track record includes deliveries to programmes and institutions spanning decades of continuous scientific operation — a heritage that reflects both the quality of our engineering and the longevity of our products in the field.
Explore how Celestia TTI can support your radio astronomy or deep space programme. Contact our scientific systems team to discuss your receiver requirements.