ESA Open Invitation to Tender: 1-11153
Open Date: 20/07/2022 15:50 CEST
Closing Date: 03/11/2022 13:00 CEST

The objective of this activity is to design, manufacture and test Ka- or Ku-band transmit and receive RF filters with broadband reflectionless performance.Targeted Improvements:At least 20 dB improvement in out-of-band reflection attenuation, resulting in simplification of the RF line-up by providing a reflectionless filter which could half the number of attenuators and isolators typically employed.Description:RF filters are key elements in any RF chain, particularly for frequency converters. Nonlinear devices, such as mixers, limiters or high-gain amplifiers, have a highly sensitive response to out-of-band spectral components which are reflected from filters in the RF line-up. These filters are, however, needed for suppression of unwanted out-of-band spectral components. Reflections can be reduced by inserting attenuators in the reflective path; however, this method degrades the signal-to-noise ratio and the dynamic range of the system. In addition, for impedance matching and microwave protection purposes, isolators are used in the RF line-up, but this introduces additional losses, accommodation issues and out-of-band isolation limitations. For these reasons, the introduction of reflectionless and non-reciprocal filters into the RF line-up would reduce the need for using attenuations for reflection reduction and isolators for impedance matching.This activity will develop, manufacture and test two reflection-less RF filter engineering models implementing critical functions at Ku- and Ka-band. The designed filters shall achieve low insertion loss and broadband, i.e. in-band and out-of-band, matching performance in comparison to the standard design approach used today. Environmental testing shall include evaluation of the filter critical matching performance and stability over temperature.

Directorate: Directorate Telecom Integrated Applica
ECOS Required: No
Classified: No
Price Range: > 500 KEURO
Authorised Contact Person: Florence Odette Jeanne Glandieres
Initiating Service: TIA-TTS
IP Measure: N/A
Prog. Reference: E/0534-01G - CC-AT 4.0.1
Tender Type: Open Competition
Technology Keywords: 6-E-VI-RF Measurement, Characterisation and Calibration Techniques
Products Keywords: 2-L-2/3/4.1-n-Other

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