RF Hardware Engineer

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Contractor

Yauheni M.

RF/Microwave Hardware Design Engineer

Email: ********@*****.***

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ M.Sc. RF Engineering with R&D experience in RF/Microwave hardware design, modeling and simulation. Area of interest

Satellite Communication System – link budget development, analysis, hardware design.

FMCW Radar - system architecture development, analysis, hardware design.

LIDAR System - optical design and detection, signal processing techniques.

R&D in RF circuit design, including RF microstrip and stripline traces and structures.

Antenna design, including waveguide, microstrip technology.

RF System architecture, analysis, hardware design.

Digital, Analog and RF PCB design.

Scientific research, engineering experiments in new and existing RF products. Experience utilize Design Tools

Advanced Design System ADS (Keysight Technologies)

RF/Microwave synthesis and simulation software Genesys (Keysight Technologies)

SPICE simulation and circuit design software Multisim (National Instruments)

High Frequency Structure Simulator HFSS (ANSYS)

SPICE simulation software LTspice (Analog Devices)

Electronics design automation (EDA) KiCad

PCB and EDA software Altium Designer (Altium)

PCB Design Software Xpedition, PADS (Mentor Graphics)

Schematic and PCB Design Software (EDA/CAD package) DipTrace (Novarm)

Data statistical analysis MS Excel (Microsoft Office) Experience utilize Measuring Instruments

Network Analyzer, Spectrum Analyzer, Noise Figure Analyzer/Meter, Vector Signal Generator, RF Power Meter, PIMD Analyzer, Digital Oscilloscope, Multi-meters, Programmable Power supplies. Technical skills

Development and analysis RF system architectures, including detailed cascade analysis and system analysis.

RF/Microwave modeling and simulation, along with component-level and circuit-level design, analysis, and test/troubleshoot up to 20 GHz.

Hands-on prototyping with RF/Microwave components such as Amplifiers (LNA, PA), Mixers, Converters, Directional Couplers, Filters using both microstrip and lumped elements, Oscillators (VCO, DRO), Synthesizers, Harmonic Generators, RF Multipliers, RF Switches, RF Variable Attenuators, etc.

Familiar with Antenna design and circuit matching.

Solve complex technical problems relating to Phase Noise, Dynamic Range, Passive Inter-Modulation (PIM), Adjacent Channel Power Ratio (ACPR), Isolation, Electromagnetic interference (EMI), Noise Figure (NF), Bit Error Ratio (BER).

Balance system gain, linearity, noise mitigation, IP3, IP2, P1dB, S-parameters and matching as parts of system design.

Research and specify RF components/chips for the designed circuits, considering performance, cost and reliability.

Evaluation new components to assure proper performance.

Electrical Schematic Design analog/digital.

RF circuit board design for optimal RF performance.

Knowledge about how a board layout can affect the radiated emissions from the design, and how to choose component placement to minimize this.

Electromagnetic field (EMF) assessments and EMC troubleshooting.

PCB design (digital/analog) including multilayer PCB’s.

PCB design packages that include electrical schematic capture, symbol creation, placement, connection, netlist, BOM generation, Gerber, DXF.

Update/Revise existing PCB design.

2

PCB debugging, troubleshooting along with component level replacement. Educational Qualification

Master of Science in RF Engineering discipline with emphasis in EM theory and RF circuits State University of Informatics and Radio Electronics

Bachelor of Science in Radio Engineering and Electronics Polytechnic Institute, Department of Radio Engineering

Associate degree in Electronics in RF Science

Technical College of Radio

Professional RF Engineering Experience (25+ years) Company: Independent Contractor, 2019 - Present

Designation: RF/Microwave Hardware Design Engineer, R&D Company: Crescend Technologies, 2019

Designation: RF Test Engineer/Technician

Company: Creation Technologies, 2017 - 2018

Designation: RF Test Engineer/Technician

Company: ISCO International, 2017

Designation: RF Test Engineer/Technician

Company: DishNetwork, DirecTV, Hughesnet, 2002 - 2017 Designation: RF Systems Electronics Satellite Communication Technician Company: Radio Plant, 1987 - 2001

Designation: RF/Microwave Hardware Design Engineer, R&D Company: Scientific Research Institute of Radio Engineering, 1981 - 1986 Designation: RF/Microwave Hardware Design Engineer, R&D Company: TV set Plant, 1980 - 1981

Designation: RF Electronics Technician

Role & Responsibility

Participation at all stages of projects: requirements, system architecture, design, modeling, bench testing, and release to production.

Research, design, development, and support of RF/Microwave products.

Set up and conduct engineering experiments on new designs as required, trouble shoot issues during NPI (new product introduction) stage.

Support factory engineers from prototyping to product launch.

Work with component vendors and partners to develop the RF front end. Review vendor capability to support development.

Participation in the implementation of environmental test plans such as thermal cycle, vibration, humidity, etc. Project name: Engineering Consulting in RF/Microwave hardware design, product R&D service Independent RF Design Engineer

Job description:

Design of electrical schematic and RF circuit board layout - Development, Simulation, Testing and Prototyping. These designs cover frequencies range up to 20 GHz for the following RF hardware:

LNA, PA, Receiver, Transceiver, Mixer, Antenna, LNBF, Phase Shifter, RF Synthesizer (PLL), Oscillators (VCO’s, DRO's), PIN diode Switch and Attenuator, Harmonic Generator (X10 – X200), Multiplier middle power (X2), Filter (lumped, helical, cavity, microstrip, waveguide), Divider, Combiner, Directional Coupler, Mode Converter (lumped, microstrip, waveguide). PCB design (digital/analog), revise existing, makes modification when necessary. Design validation, performing lab measurement and review databases to identify PCB malfunctions and repair down to the component level.

Investigation and compile data, interpret schematics related to printed circuit board design problems and create report in detail product problems and resolutions.

Work closely with customer personnel regarding system design, performance and optimization, recommend configuration changes. Project name: Reduce Out-of-Band Emissions (ACPR), Input Return loss (IRL) of RF Power Amplifier Driver Crescend Technologies

Project description:

Worked on RF power amplifier driver and developed solution to improve Adjacent Channel Power Ratio(ACPR), Input Return Loss. Updating RF stages design, electrical scheme of RF amplification in a power amplifier driver to meet performance specification. 3

Measuring the signal energy that disperses, into the surrounding channels of Power Amplifier driver, analyze and document data of adherence to product requirements, release product to production. Project name: Improvement Bit Error Ratio (BER) of digital two-way microwave wireless ISM band Grid Radio Creation Technologies

Project description:

Performing Bit Error Rate Test (BERT) using Frequency hopping spread spectrum (FHSS) method of transmitting radio signals by shifting carriers across numerous channels with pseudorandom sequence, which is already known to the sender and receiver. Performing RF Tx/Rx tests such as receiver Sensitivity, Transmission Power Output Level, Signal-to-Noise Ratio (S/N), Received Signal Strength Indicator (RSSI), TX Link.

Test data analysis of digital transmission over a RF communication channel for the number of bit errors that could be altered due to noise, interference, distortions or bit synchronization errors. Identified the effect of RF Synthesizer Phase Noise on BER performance. Project name: Development solution and test hardware to detect malfunction of satellite dish LNBF’s, Receiver’s DishNetwork

Project description:

Analysis of signs of a faulty LNBF and Satellite Receiver such as missing satellite television channels, video pixelation, signal drop- out during heavy rain or the complete loss of signal. Test development to determining the Low-Noise Block Down Converter Feedhorn (LNBF) suitability for use due to changes in frequency of Dielectric Resonator Oscillator (DRO) as a consequence degradation over time and exposure to extreme weather conditions.

Development of a solution for setting the parameters of an LNBF, satellite receiver for the required frequency range. Development of a fixture for manual testing to ensure compliance with LNBF DRO frequency accuracy and satellite receiver Automatic Fine Tuning (AFT) range as specified in satellite equipment specifications. Project name: Development of Cable Television Headend architecture, RF hardware Radio Plant

Project description:

Creation architecture of the Headend Cable TV Base Station to carry local over-the-air television programming for distribution by dedicated single coaxial line.

Development of electrical schematics, circuits and RF unit physical design, test procedure, and technical documentation of RF/Microwave Hardware such as:

RF Converters

High Gain FM band LNA

Reference pilot Frequency Synthesizer

VHF/UHF low phase noise Synthesizers

Tunable highly selective LNA’s

Tunable highly selective PA’s

Tunable narrow Band Pass Filters using both lumped and helical elements

Multi channel selective RF Combiner

Automatic gain and indication adjustment circuit Project name: R&D RF/Microwave Radar Station Hardware Scientific Research Institute of Radio Engineering Project description:

Research and Development RF/Microwave Hardware for Satellite Radar Station in the bands L, S, C, X – frequency ranges, such as:

Harmonic Generators (X20-X50)

Medium power Microwave Multipliers (X2)

Oscillators (VCO, DRO)

RF Synthesizers (PLL)

LNA’s, PA’s

Multichannel microstrip RF Switches

Microstrip RF Filters

Cavity Band Pass RF Filters

Development of electrical schematics, topology of microstrip circuit boards, RF unit physical design, and technical documentation. Participate in the implementation of environmental test plans such as thermal cycle, vibration, humidity, etc.

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