Photonic RF Repeaters for Broadband Telecom Satellites: System Demonstration and Test Results

Sotom, M.; Roux, Sophie; Aveline, M.; Picq, M.; Benazet, B.; Colombo, T.

doi:10.1109/mwp.2018.8552852

Cited by 3 publications

(1 citation statement)

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“…In particular, Fig. 1 shows the architecture of a flexible analogue photonic RF repeater for the Forward mission (from gateways to users) making use of multi-LO frequency-converters (MLFC) as well as the demonstration model developed and extensively proven within ESA activities, and already reported in [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Novel multi-channel photonic RF frequency converters for wideband telecom satellite payload applications

Benazet,

Faugeron,

Aveline

et al. 2023

International Conference on Space Optics — ICSO 2022

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RF frequency conversion is a key function of telecom satellite payloads. Hereafter are presented new photonic RF subsystem concepts supporting multi-channel, wideband frequency-conversion, thus drastically reducing the amount of equipment, for frequency down-and up-conversions respectively at the inputs and outputs of a digital processor. Proofof-concept demos are presented and the measured RF performance reviewed vs. predictions and system requirements.The so-called dual-band, multi-LO frequency-converter (DB-MLFC) concept is an extension of the multi-LO frequencyconversion scheme already proven by Thales Alenia Space. It makes use of a dual-drive modulator with wavelengthmultiplexed LO input and RF signal inputs in separate frequency bands. It can be applied to digital processor-based payloads and perform down-conversion of Ka or V-band sub-bands to the C-band of the processor input. The DB-MLFC concept was proven to support down-conversion of 2 and 3 sub-bands from the Ka (~30 GHz) and V (~50 GHz) bands to the C (~6 GHz) band of the processor input.The second concept called multi-RF frequency-converter (MRFC) consists in mixing multiple RF signals on separate optical carriers with an electrical LO signal into one electro-optical mixer. RF signals to undergo the same frequency conversion are combined via a WDM and fed into the optical input port of an electro-optical modulator, the RF port being driven by the LO. The RF performance of the MRFC concept, were measured with up-conversion of up to 8 Cband RF signals from the processor output to Ka-band payload output frequencies (~20 GHz).

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Section: Introductionmentioning

confidence: 99%