Mr
Léo Farhat
(Cobham Microwave ( France))
Oral Presentation
The aim of the project is the design, development, manufacturing and test of a Ka-Band high power isolator in WR51 waveguide technology capable to handle 350 Watt CW in both forward and failure modes.
Mr
Hervé LEBLOND
(THALES ALENIA SPACE - FRANCE)
Oral Presentation
The overall objective of this study is concerned with the design, manufacture and test of a Ka/IF EM Down-Converter based on a Non hermetic packaging and reduce the weight and the size of RF/IF section, LO section, TM/TC section, DC/DC section by using new devices and technologies or by considering new architectures.
Mr
William Fitzpatrick
(COM DEV International (Canada))
Oral Presentation
The ‘Compact High Power Ku-Band Output Multiplexer’ project was a natural extension of a previous successful development of a new family of dielectrically loaded output filters at Ku-Band (ESA contract 19923/06/NL/GLC).
The scope of this activity focused on leveraging the strengths of the novel dielectric filter design into a comprehensive multiplexer package. Tasks included power handling to...
Dr
Carlos Vicente
(AURORASAT (Spain)), Dr
Ivan Arregui
(UPNA (Spain))
Oral Presentation
The scope of the activity was to design, manufacture and test high power lowpass filters with high rejection capable to withstand much higher power levels than their classical counterpart. These filters can be used after the output multiplexer in order to eliminate harmonics and intermodulation.
In this presentation, we will show the main results of the activity.
Mr
Fabien Droz
(Orolia Switzerland SA (Spectratime))
Oral Presentation
In order to improve the robustness of the existing GALILEO FOC design, the occurrence and the amplitude of frequency anomalies were strongly reduced. The strategy was to reduce the influence of the identified causes through their intrinsic coefficients. Mainly the light shift and the power shift coefficients are concerned.
The critical coefficients were reduced by significant factors:
-...
Mr
Mike Brennan
(Airbus, Space & Defence), Mr
Steve Parker
(Airbus, Space & Defence)
Oral Presentation
The Ka-Band LNA programme has resulted in the development of an EM Ka-Band LNA with NF < 2.1 dB at 20C and covers the 27.5 GHz – 31.0 GHz frequency range. A low-loss waveguide-to-microstrip transition design and use of a mHEMT amplifier at the front-end were key to achieving low NF. Substantial progress has been made in developing the techniques to assemble a hermetic cavity containing the...
Mr
Mikko Kotiranta
(- Fraunhofer Institute for Applied Solid State Physics IAF, Germany)
Oral Presentation
A dual redundant low noise amplifier (LNA) for the Q/V-band has been successfully designed and manufactured in this project. The reliability of the amplifier is improved by including a redundant LNA into the amplifier module. The LNAs have been realized as monolithic millimeter wave integrated circuits (MMIC) using the Fraunhofer IAF metamorphic high electron mobility transistor (HEMT)...
Mr
Piero Gabellini
(Space Engineering (Italy))
Oral Presentation
The objective of the study was to investigate and design Ka-band multi-beam dual-polarization payloads for significantly higher capacity utilization with respect to conventional multi-beam payloads in the presence of unbalanced traffic demand (see Fig. 1), with specific focus on payload aspects related to efficient and flexible resource allocation in Multi-Beam Ka-Band satellites for Broad...
Dr
Carlos Vicente
(AURORASAT (Spain)), Mrs
Isabel Montero
(Instituto de Ciencia de Materiales de Madrid CSIC (Spain)), Mr
Jerome Puech
(CNES (Centre National d’Etudes Spatiales) - France), Prof.
Luis Galan
(Universidad Autónoma de Madrid UAM (Spain)), Mr
Mohamed Belhaj
(ONERA - France), Mr
Philippe Mader
(Thales Alenia Space - France)
Oral Presentation
At the payload level, microwave components must handle very high electric fields in vacuum. Risks of discharge such as Multipactor or Gaseous Discharge triggered by Multipactor can become critical and must be taken into account at the system level, as well as at the equipment level. At platform level during launch, the whole range of pressure levels are imposed onto hardware and gaseous...
Mr
Benno Margesin
(Fondazione Bruno Kessler,TAS-I (Italy))
Oral Presentation
Prof.
George Papaioannou
(NKUA (Greece))
Oral Presentation
The scope of the activity was to develop advanced RF-MEMS switches for DC to 60 GHz applications that require high reliability. Main performances specified in the frame of the project are:
• SPDT with high isolation (50dB) and low losses (0,5dB) in Ku-band
• Long term reliability: lifetime 15 years with 1000 actuation max
Mr
William Fitzpatrick
(COM DEV International (Canada))
Oral Presentation
High power operation at high frequencies in a traditional contiguous format multiplexer is typically limited by the punishing dissipative losses of narrow bandwidth channelization. Technologies and approaches used at lower frequencies (e.g. 10GHz) often are not applicable at Ka Band (e.g. 20GHz). In order to provide narrow channelization (36MHz) at operating frequencies of 17GHz it is...
Raymond van Dijk
(TNO -The Netherlands)
Oral Presentation
A multipaction-free integrated circulator in LTCC technology has been developed in a consortium with Via Electronic, MESL microwave and TNO. The device counters multipaction by avoiding gaps in the circulator and using a LTCC stack that can be used to integrate the circulator with the rest of the transmit-receive module. The non-reciprocal action is provided by an embedded ferrite. The ferrite...
Mr
Paul Booth
(Airbus Defence and Space Ltd (UK))
Oral Presentation
The programme was to develop a feed mounted Ka-band quadruplexer. This component will be developed for multi frequency antennas and will employ a combination of non-standard Tx and Rx bands. The filters were realised in a mixture of circular waveguide for the narrow band filters, traditional rectangular for wideband filters and a dual mode rectangular filter. Far-out-of-band rejection was...
Mr
Damien Pacaud
(THALES ALENIA SPACE FRANCE)
Oral Presentation
Objective of the study : development and qualification of a Ka-Band TC 2 Channels ODMUX.
The solution is based on TAS Ku-Band TC OMUX background
Dr
Carlos Vicente
(AURORASAT (Spain))
Oral Presentation
The scope of the activity was to analyse the impact on the multipactor threshold of different configurations in which the parallel plate approximation does not hold.
To do this study, numerical software was developed in order to rigorously consider all the effects affecting the multipactor discharge. 24 samples were designed, manufactured and tested in terms of high power.
In this...
Dr
Carlos Vicente
(AURORASAT (Spain))
Oral Presentation
The scope of the activity was to analyse multipactor under multicarrier systems. In particular, to assess the validity and generality of the 20 gap crossing rule.
To do this study, numerical software was developed in order to rigorously consider all the effects affecting the multipactor discharge. 3 samples were designed, manufactured and tested in terms of high power.
In this presentation,...
Mr
Claudio Campa
(Space Engineering SpA, Italy)
Oral Presentation
The main aim of the activity is to assess and show the performance obtainable improvements that can be achieved utilizing the On-Ground Beam-Forming (OGBF) technique in conjunction with Multi User Detection (MUD) in comparison with the traditional on-board beam forming. The work results will permit to draw conclusions on the viability to adopt those techniques in the context of space...
Prof.
Isabel Montero
(Instituto de Ciencia de Materiales de Madrid CSIC (Spain)), Prof.
Luis Galan
(Universidad Autónoma de Madrid UAM (Spain)), Mr
Ulrich Wochner
(Tesat Spacecom (Germany))
Oral Presentation
The objective of this ITI project was to enhance Multipactor threshold without penalizing insertion loss on Ag-plated harmonic low-pass corrugated filters, see Fig.1, by optimizing surface roughness shape and size. Filters were designed and manufactured by Tesat.
Ms
Aline BRIAND
(THALES ALENIA SPACE FRANCE)
Oral Presentation
The scope of the activity was the feasibility demonstration and performance assessment of an on-board calibration sub-systems for advanced Ku-band and Ka-band communication payload architectures using active/semi-active antennas and/or Multi Port Amplifiers.
Mr
Luca Pelliccia
(RF Microtech Srl, Italy)
Oral Presentation
Goal of the project is to reduce mass and volume of L- and S-band input filters using dielectric resonator technology. Large and bulky coaxial resonators are currently used in the realization of filters for such applications. While dielectric resonators can reduce the filter footprint up to 50%, an optimum trade-off in terms of spurious performance, temperature stability and unloaded Q-factor...
Prof.
Ernesto Limiti
(MECSA - Italy)
Oral Presentation
Target of the activity is the design of a single-chip integrating integrating low noise amplification (LNA), high power amplification (HPA) and switching (SPDT) functionalities in Gallium Nitride technology.
The distinctive feature of the project has been the development of the requested single chip making use of two different European GaN technologies, and namely the UMS GH25 and Selex ES...
Mr
Tiago Soares
(ESA/ESTEC)
Oral Presentation
The Clean Space, is a technology cross-cutting initiative which started in 2012 with the aim of guaranteeing the future of space activities by protecting the environment, both on Earth and in space. Clean Space encompasses technology developments along 4 branches:
• Eco-Design to evaluate the environmental impact and monitor legislation risk;
• Green Technologies to replace hazardous...
Mr
Tiago Soares
(ESA/ESTEC)
Oral Presentation
The Clean Space, is a technology cross-cutting initiative which started in 2012 with the aim of guaranteeing the future of space activities by protecting the environment, both on Earth and in space.
Mr
Christian Arnold
(TESAT Spacecom (Germany))
Oral Presentation
The scope of the activity was to design a temperature compensated omux in Ka-band. The omux is a three channel omux manufactured from aluminium half-shells. The length of the manifold is sufficient to accommodate 12 channels. The channel filters can be integrated with the manifold in a common aluminium half-shell. They are operated in TE011 mode, which is very suited for applications with...
Mr
Marziale Feudale
(Thales Alenia Space-Italia (Italy))
Oral Presentation
Scope of the activity was the study, design and implementation of a large order Switch matrix based of MEMS technology for applications to flexible satellite payloads. A 12x12 Switch Matrix Unit featuring silicon RF MEMS implemented on LTCC boards has been developed. It consists in a complete Engineering Model unit, housed in a aluminium box with RF and DC connectors for powering and commanding.
