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Posted on 11/07/2021
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Principle RF Engineer eMFusion London

This is an exciting opportunity to work for one of the world’s leading mobile satellite communications company.

With offices based in London, our client is looking for an Systems Engineer who will join a team responsible for the design, development and delivery of aviation projects for their customers. 
 

Job Description

The position of User Terminal RF Systems Engineer is part of the User Terminal (UT) Engineering group within the company's CTO division. The successful candidate will be a Radio Frequency Engineering Subject Matter Expert supporting activities in Satellite User Terminals projects where we oversee the design evaluation and in-life management of new maritime, aviation and land mobile satellite communications equipment. The successful candidate will be engaged in the requirements and analysis of user terminal Radio Frequency technology which include various antenna types and Ka and/or L Band Radio Frequency electronics. The candidate will be supporting the User Terminal Engineering Department in the definition and evaluation of user terminal radio frequency electronics. They will perform prediction, evaluation and analysis of current and future radio frequency hardware and performance.  He or she will also support the definition of Type Approval requirements and test facilities for future capabilities.

The role will require co-ordination with a wide range of other project teams both within and external to the client. The successful candidate will be required to represent our client as the technical expert in meetings with vendors and standardisation bodies and must be capable of dealing confidently with experts in similar and different disciplines. The role may require regular travel.

Key Responsibilities:

  • Providing expert advice and analysis on RF engineering
  • Support the identification, down-selection and specification of new UT technology (focusing on antennas and Radio Frequency electronics) proposed for use in the company's networks.
  • Support Radio Frequency Requirements Definition for terminals including the specification of key RF performance targets, i.e. G/T, EIRP, and radio regulatory compliance
  • Support the review and analysis of results from Value Added Manufacturer data against specifications and evaluate regulatory compliance to regional and international radio regulations
  • Provide expert advice and analysis to refine User Terminal Radio Frequency requirements in view of emerging antenna and radio frequency technologies coming into the market as well as addressing the changing radio regulation environment

Qualifications

Essential Knowledge and Skills:

  • Strong and relevant experience ideally in RF design in telecommunications or radar development at a value added manufacturer or design house
  • Degree or MSc or PhD in Electrical or Electronic Engineering or equivalent with a strong emphasis on Radio Frequency electronics
  • Strong knowledge of mobile User Terminal antenna types and their practical applications, expected performance, and general architecture from L-band to mm Wave)
  • Intimate understanding of the performance drivers, cost, reliability, strengths, limitations and challenges of various antenna types:

o   Parabolic reflectors – symmetrical and asymmetrical

o   Steering arrays – mechanically steered

o   Active Electronically scanned phased arrays and digital beamforming

o   Phase Shifting and True Time Delay Techniques

  • Strong knowledge and analytical skill in evaluating the impact and optimisation of RF performance on modulation schemes including the support of wideband multicarrier OFDM waveforms as well as traditional narrowband waveforms
  • Strong knowledge of hardware development and specifically transceiver architecture and RF design at the PCB and component level:

o   LNAs – Noise Figure, Bandwidth

o   LNBs – Noise figure, Bandwidth, Phase Noise, spurious control

o   Power amplifiers/BUCs – Power linearity, pre-distortion, efficiency, thermal considerations, power transistor technologies

o   Frequency conversion – Phase noise, spurious control

o   RF Filter design, performance and implementation

o   RF Integrated Circuit transceivers

  • Strong  knowledge of mobile satellite signal propagation models in mobile environments
  • Good knowledge and experience of software programming and use of simulation tools (e.g. MatLab, Python) for system development and analysis
  • Strong and experience in RF test and measurement, testing methods including bench and antenna range
  • Strong knowledge of antenna pointing algorithms, pointing performance and requirements in a mobile environment, including pointing error analysis and review and test of pointing error

Desirable Knowledge and Skills:

  • Negotiation and program management skills
  • Working knowledge of link budget and fading simulations
  • Satellite communications systems
  • Knowledge of network engineering
  • Knowledge in Avionics certification process
  • Knowledge of Aviation Standards, environmental and regulatory requirements (ARINC 429/741/781/791, DO-178, DO-262, DO-160)
  • Knowledge of aviation safety performance requirements
  • Knowledge of Digital Signal Processing implementation and architecture

If you are an Systems Engineer who is ready for a new challenging work for a global organisation, this is the job for you! This opportunity also offers Private Health Insurance, Life Insurance, Dental Insurance, Bonus and more. 

SpaceHubb latest news
Posted On 29/09/2021
By Ben
Inmarsat makes Fleet LTE offshore agreement with Solstad Offshore

First major offshore vessel owner makes switch to flexible Inmarsat Fleet LTE to connect seamlessly using three networks

Inmarsat, the world leader in global, mobile satellite communications, has secured a contract for its new Fleet LTE service, covering the connectivity needs of several Solstad Offshore North Sea vessels. 

Offshore vessel operators commonly buy LTE and VSAT connectivity separately, using LTE when within range of shore, rigs or wind farm networks then relying on crew to switch manually to VSAT beyond 4G coverage limits. Costs can be hard to control where services are billed separately, while manual switchovers can mean suboptimal signals or service interruptions. 

Developed for flexibility, performance and affordability, Inmarsat Fleet LTE delivers hybrid connectivity via 4G cellular connectivity provided by Tampnet plus satellite coverage on Inmarsat’s Fleet Xpress Ka-band and FleetBroadband L-band services, switching between networks on a fully automated basis.

“The Fleet LTE combination of bandwidth, reasonable pricing and guaranteed connectivity makes sense in today’s offshore market, which is simultaneously cost driven and hungry to exploit the opportunities created by digitalisation and real time data analytics,” says Christian Nesheim, ICT Director, Solstad Offshore ASA. 

Algorithms within the Fleet LTE router switch seamlessly between LTE and VSAT so that service integrity, high speed data transfer and low latency are always optimised. The ‘three-in-one’ service provides a one stop shop for 4G, Ka-band and L-band without the complication of dual billing or the risk of disconnection. 

Following successful trials on board three Solstad vessels over the first three months of 2021, Fleet LTE will be commissioned on the remaining relevant vessels. With a fleet of around 100 vessels, Solstad Offshore is one of the largest offshore support vessel owners in the world.

“Inmarsat has supported Solstad Offshore’s requirement for connectivity over many years, which makes its commitment to our new Fleet LTE service package especially welcome,” says Eric Griffin, VP of Offshore and Fishing, Inmarsat Maritime. “We look forward to working with Solstad as it takes advantage of affordable high speed bandwidth and low latency to support its unfolding digital strategy for offshore operations within the North Sea.”

Following the launch of its Fleet LTE Offshore service for North Sea customers last year, Inmarsat unveiled plans to develop an equivalent bundled offering to offshore vessels in the Gulf of Mexico, after extending its agreement with subsea fibre and offshore LTE network operator, Tampnet. 

The seamless integration of multiple technologies into one cohesive solution is similar to Inmarsat’s recently-announced plan for ORCHESTRA, the communications network of the future. Inmarsat ORCHESTRA is a unique ‘dynamic mesh network’ that will bring together existing geosynchronous (GEO) satellites with low earth orbit satellites (LEO) and terrestrial 5G into an integrated, high-performance solution. Offering the lowest average latency and fastest average speeds, ORCHESTRA will eliminate the industry-wide challenge of congested network ‘hot spots’.

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