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0-5 years of experience
Completed the full design cycle from requirements to manufacturing for the transmitter on a Digital Enhanced Cordless Telecommunications (DECT) handset and base, a 1.9 GHz TDMA cordless phone system. Also system test and troubleshooting on US PCS CDMA mobiles.
- Completed design and test of driver and power amplifiers, discrete harmonic filter and transmit/receive switch that complied with the ETSI TBR-6 spec and passed type approvals.
- Constructed and calibrated an RF emissions system that was essential in measuring, correlating, and correcting out-of-spec emissions for type approvals.
- Improved radiated emissions in the handset and base through targeting problem areas, redesigning circuits, and changing circuit layout to achieve type approval.
- Involved in final system performance optimization in multiple areas- VCO pull issue, range analysis, voice quality performance.
0-5 years of experience
The position required a direct involvement in the design and development of space-grade RF transceivers for satellite communications.
- Developed product concepts alongside business development to secure contracts worth $3-$5M.
- Conducted RF system link-budget analyses and designed baseband blocks using ADS and Momentum.
- Troubleshot prototype boards and recommended design changes to achieve compliance with system specifications.
0-5 years of experience
Worked on Tulsa second carrier overlay (1900 on 850) design as a part of ATT UMTS expansion
- Generated focus and computation zones, Traffic Maps, verified RFDS submitted by the market and with the existing ATOLL database
- Ran path loss, Monte-Carlo Simulations' and all the predictions needed for the ATT design review
- Optimized UMTS 1900 network for scaled Traffic by changing the EDT, MDT, reducing Pilot Pollution and improving Ec/Io to meet the design KPI's in ATOLL
- Prepared PSC Plan and created Neighbor lists (IRAT, IFHO) for optimizing UMTS 1900 network
6-10 years of experience
Design, product development, and production support of two-way mobile and base-station radio products
- Designed and evaluated complex PLLs that support both analog and digital modulation
- Prototyped and integrated RX, TX and PLL circuits for new radio
- Performed root cause analysis in modulation fidelity, spurious rejection, audio distortion, and base station power supply performance issues
- Performed transceiver design qualification per TIA standard and EF Johnson specifications
- Developed automated data -processing applications with Visual Basic for Excel
- Reviewed and corrected improper production test methodologies
0-5 years of experience
Created databases and data reports in Microsoft Access.
- Installed and maintained Windows NT Server 4.0 in legal and engineering environment.
- Developed Access database solutions to store and retrieve site information about potential and acquired tower locations for cellular systems.
- Responsible for a computer budget of up to $25,000 for computer purchases, upgrades, new software, and software updates after completing a hardware / software life cycle cost analysis.
- Designed a program in Visual Basic for Applications for calculating and formatting over 25 monthly sales reports in Excel for ADP.
0-5 years of experience
- Led the Design Team for the R&D of VI Detector Board RF Current and Voltage to improve Tuning Speed of Impedance Matching Unit
- Contributed to the Cost Reduction Project for TS/TX Series RF Generators that resulted in 20% reduction of Production Cost
- Conducted stress testing for RF Components to ensure robust design and development
- Skilled in using Vector Network Analyzer, Oscilloscopes, Impedance Analyzer, Signal Generator, Curve Tracers, LCR Meters and other Tektronix/Agilent equipment
- Provided Technical Liaison with Adtec USA and Europe biweekly
- Designed various Test Loads Dynamic Dummy Load for Design and Production Teams
0-5 years of experience
Managed the startup of new contract sites for RF services nationwide (Phase I deployments). Coordinated with local utility personnel, electrical contractors and CellNet personnel for the initial deployment of field equipment
- Trained local RF technicians on the use of RF propagation evaluation equipment and survey practices
- Ensured adherence to standard procedures for RF path verification before and during base station installation
- Provided rigorous analytical support in defining deployment strategies for CellNet's proposal pricing process. Developed an understanding of what drives the estimates of infrastructure requirements, continually refined the accuracy of these estimates, and developed new and improved tools to support this estimation function
- Oversaw the LAN planning and installation. Directed the RF technicians in the execution of the LAN plan. Conducted post-installation evaluation of the WAN and LAN performance and corrected problems as they were discovered
- Troubleshoot and corrected any RF path problems on the WAN and LAN
- Assisted in creating processes and standard operating procedures that enhance the effectiveness of the field personnel to deploy network
- Filled-in for RF Services manager when require
0-5 years of experience
Involved in Design and development of 6GHz, 11GHz and 15GHz transceivers
- Successfully transferred products to manufacturing
- Developed prototype circuits and performed Design Verification Tests (DVT) on final products
- Initiated cost reduction plan and presented to the management
- Generated design documents and test reports
- Evaluated LDMOS transistors, Phase Loop Lock circuits and Voltage Controlled Oscillators
0-5 years of experience
- Successfully designed, developed, and tested a low cost fusion-bonded multilayer antenna element for use in a land-based radar. The element saved the program over $10M per system.
- Reviewed and approved layouts, drawings and acceptance testing procedure (ATP) for the element.
- Generated build-to-print specifications for the element.
- Conducted significant 3D modeling of performance impacts due to changes required by the manufacturer.
0-5 years of experience
- Assisted in the design of a SiGe BiCMOS LNA using Cadence SpectreRF. Tested and characterized the LNA's S-Parameter, noise figure, IIP3, gain performance up to 18GHz using network, spectrum and noise figure analyzers. Performed signal integrity analysis on device packages using Time Domain Reflectometry measurements.
- Researched and designed a UWB front-end receiver incorporating a low noise amp and microstrip filter. Investigated GaAs, pHEMT and MMIC devices for use in the LNA section.
- Designed a 1.8GHz PLL. Performed detailed phase noise and jitter timing analysis. Used MathCAD to calculate the phase noise Allen Variance.
- Used Zeland's IE3D EM tool to simulate IC package and board layout effects.
- Schematic capture and board layout using PADS and P-CAD.
0-5 years of experience
Managed the startup of new contract sites for RF services nationwide (Phase I deployments). Coordinated with local utility personnel, electrical contractors and CellNet personnel for the initial deployment of field equipment
- Trained local RF technicians on the use of RF propagation evaluation equipment and survey practices
- Ensured adherence to standard procedures for RF path verification before and during base station installation
- Provided rigorous analytical support in defining deployment strategies for CellNet's proposal pricing process. Developed an understanding of what drives the estimates of infrastructure requirements, continually refined the accuracy of these estimates, and developed new and improved tools to support this estimation function
- Oversaw the LAN planning and installation. Directed the RF technicians in the execution of the LAN plan. Conducted post-installation evaluation of the WAN and LAN performance and corrected problems as they were discovered
- Troubleshoot and corrected any RF path problems on the WAN and LAN
- Assisted in creating processes and standard operating procedures that enhance the effectiveness of the field personnel to deploy network
- Filled-in for RF Services manager when require
0-5 years of experience
Network Optimization consulting team on service development and delivery. Designed system based on variable inputs to provide maximum coverage, capacity and performance. Monitored system performance indicators such as dropped calls, blocked calls, and origination failures. Performed necessary evaluations to ensure the maximum optimization of the network system.
- Optimized projects based on statistics and counters (KPI's, Dropped calls, Blocking, Quality, HO)
- Determined RF coverage predictions and link budgets of distributed antenna systems
- Operated and managed optimization of GSM Radio Network, site activation, BCCH frequency/BSIC
- Completed capacity planning and parameter changes and solved radio network statistical analysis
- Engineering experience in site surveys, design, installation, and testing of RF systems
- Provided ongoing capacity management, performance management, and redesign support in launched markets
0-5 years of experience
Designed RF transmitters and receivers for 2G cellular equipment.
- Developed block diagrams from requirements and designed board level analog circuitry.
- Used Mentor for schematic capture and PCB layout.
- Performed bench level circuit testing and wrote board level test methodology for product certification and factory test.
- Analyzed and root-caused field failures.
0-5 years of experience
Appointed central market engineer for Houston and New Orleans markets to design and implement 2500 MHz LTE TDD network, integrated with existing Clearwire network sites.
- Correlated events, counters, and alarms and provided recommendations for network performance improvement.
- Troubleshoot root cause issues with parameter misconfigurations, alarms, and network issues.
- Generated a Universal Propagation Model and Traffic Maps.
- Prepared and analyzed the new Small Cell design project procedures.
0-5 years of experience
Delivered optimal performance of CDMA, EVDO, and LTE networks through proper design, integration of antennas, capacity, and equipment requirements.
- Contributed to the RF Design of the regional network by search ring issuance, candidate assessments, candidate rank, and design evaluation.
- Partnered with System Performance to reduce drop calls, IA call attempts, and any other performance issues.
- Prepared timely FCC and FAA and FAS submissions, also provided data on regulatory packages and E911 data.
- Worked closely with System Performance and Ops teams on carrier adds, backhaul expansions, and site mods.
- Used propagation tools and planning tools to assess new site builds, sectorizations, and site modifications
- Worked with Project Management teams on new site location and solutions to meet new site build requirements
- Provided engineering guidance and support for several departments including transport, performance, leadership, site construction, sales, and real estate to meet or exceed goals.
0-5 years of experience
- Supported design, fabrication & testing of Low Observable antennas.
- Introduced lumped element filter product line to NG for vertically integrating radio production. Designed 24 distinct filters for airborne application.
- Learned synthesis, design and simulation for narrow band, wide band, diplexer, & triplexer types of passive filters operating from HF to C band.
- Trained drafters, technicians, and assemblers in tuning and fabrication of complex miniature circuits.
- Used thermal imager to analyze & validate high power antenna matching unit.
- Wrote internal research papers on effects of electromagnetic fields in magnetic conductors, low loss materials, high temp solders and screw capturing methods.
0-5 years of experience
Circuit design of RF power amplifiers, receivers, transmitters and power supply circuits for multiple new products.
- Successful RF circuit design from start to production on numerous wireless devices. Responsible for schematic capture, cost budgets, power budgets, gain and power budgets, component selection and integration,
- Successfully designed RF Power Amplifiers for VHF, UHF and 700 MHz to 1 GHz.
- Successfully developed numerous power supplies for subscriber and infrastructure products.
- Heavily involved in PCB layout for Power Amplifiers, Receivers, Transmitters and Power Supplies.
- Lead RF design development from start to production.
- Demonstrated ability to design to meet specific parameters, cost constraints, FCC specifications, and integrate
0-5 years of experience
Responsible for all the sites in different LTA'S in and around bay area and proposing solutions to improve the coverage and reducing customer complaints.
- Conducted site audits and making sure that they match according to the RF design sheet and the information in the INSITE.
- Worked on different Ericsson cabinets (RBS2102, RBS2106, RBS3106, RBS3018) used at the sites and recommending new configurations to help improve future increase in capacity.
- Running different prediction plots in ASSET and making sure that the recommendations made are helpful in improving in the coverage.
- Responsible for creating justification packages for the approved sites and updating them in HOMER.
- Involved in many recommendations like adding MCPA'S at different sectors, changing TMA'S to suite the different configurations used at the site, changing cabinets and any other changes needed to improve the coverage.
- Involved in E911 site selection, creating drive routes for checking handovers from different BSC'S and RNC'S and making sure that the site selection matches the PSAP criteria.
0-5 years of experience
Provided UHF receiver design for FCC part 15 applications, including 900 MHz stereo headphones and remote locator projects.
- Designed RF amplifier, oscillator, mixer, and audio circuits in 50 MHz and 400 MHz remote locator receiver products.
- Designed a UHF data receiver based on super-regeneration techniques.
- Cost reduced the current remote locator receiver product saving approximately $1M annually.
0-5 years of experience
Responsible for the implementation and support of transceiver designs for the Internal Research and Development group.
- Designed amplifiers to meet NF and IP3 requirements
- Designed matching circuits for amplifiers using the Agilent 8753 Network Analyzer and Microwave Office simulation program
- Drafted and implemented test plans and procedures
- Utilized various design software packages, such as Microwave Office, Sys Calc and Mentor Graphics
0-5 years of experience
Worked with various morphology/topography WiFi databases and drive test data for model calibration
- Developed area and site surveys to identify WiFi equipment location and antenna orientation
- Subject Matter Expert at zoning hearings for new cell site construction
- Worked with PTP and PTMP wireless backhaul in the 5.8, 18 and 23 GHz range utilizing 16, 32 and 64 QUAM
- Developed, managed, and implemented project schedules, communication procedures, and reporting
0-5 years of experience
- Responsible Design Engineer on higher power (>50W) Transmit/Receiver Switch module(s) with low noise amplifiers, filters, equalizers, couplers, and limiters ranging from high frequency (HF) to up to 6GHz.
- Performed all of the complex RF layout tasks (PWB) using Microwave Office, created manufacturing design packages (BOMs, fab drawings, assembly drawings, etc.), on-site PCB assembly adviser, created test plans and conducted initial laboratory testing and debugging.
- Advised closely in thermal and mechanical trade-offs including DC interconnection, RF interconnection, cabling, heat sinking and electro-mechanical isolation.
- Consulted & performed the RF layout of dual-band power amplifier design (up to 6GHz) using GaN technologies.
0-5 years of experience
Designed and characterized RF silicon power bipolar transistor and FET.
- Designed RF power amplifiers at cellular and PCS frequencies.
- Designed LDMOSFET high power transistor and amplifier circuit at 2 GHz, one of the leaders in the industry.
- Worked with a device engineer to evaluate the next generation LDMOS and make suggestions during the new die development stage.
- Generated data sheet and performed production support function.
- Programmed in HP VEE to control network analyzer for data acquisition.
0-5 years of experience
Designed and characterized RF silicon power bipolar transistor and FET.
- Designed RF power amplifiers at cellular and PCS frequencies.
- Designed LDMOSFET high power transistor and amplifier circuit at 2 GHz, one of the leaders in the industry.
- Worked with a device engineer to evaluate the next generation LDMOS and make suggestions during the new die development stage.
- Generated data sheet and performed production support function.
- Programmed in HP VEE to control network analyzer for data acquisition.
0-5 years of experience
Developed reference design and customer specific solutions for GSM, GPRS, EDGE and 3G multiband platforms
based on [company name] baseband and RF chipsets.
- Led design projects for hansets for customers, interfaced with customers.
- Designed and tested RF circuits for cellular, WIFi, Bluetooth, FM radio.
- Performed part selection, characterization, schematics, layout, debugging, simulation, testing.
- Performed type approval tasks, preparation, testing, troubleshooting.
0-5 years of experience
- Provided consultancy services for SK Telecom in their bid to acquire a new license to operate the 3G technology in Seoul and the whole of South Korea
- Involved in the dimensioning and engineering design for both WCDMA and CDMA2000 networks as possible migration paths of SK Telecom into IMT-2000
- Participated in the various 3G studies conducted for SK Telecom. Studies included 3G system overlay on existing 2.5 G infrastructures and capital expense
- Involved in the radio planning of the Nokia & Motorola GSM/UMTS expansion projects of BT Cellnet in Scotland and Northern Ireland
0-5 years of experience
- Developed UMTS Band VIII duplexer with differential Rx ports, EGSM and DCS Rx filters with differential output ports. All designs were for Flip Chip configuration in RF FEMs.
- Proficient in using HP ADS (including Momentum) schematic and layout tools to design and simulate SAW filters and Duplexers.
- Extensively used Ansoft HFSS to incorporate the effects of Module laminate in the design of the Filters and Duplexers.
- Created / Maintained Datasheets for SAW Filters using ADS and proprietary Data Analysis tools.
0-5 years of experience
Performed link budget, coverage and traffic analysis using ATOLL
- Performed LTE Parameter verification and validation in ATOLL
- Optimized the radio network design KPIs of the baseline LTE project and prepared the constrained and un-constrained radio network designs for the assigned polygons and super-clusters
- Performed LTE Design and Optimization utilizing ATOLL and ACCO
- Used Monte Carlo Simulation to generate load based and other KPIs such as RSRQ, RSRP, and SINR
- Interference analysis and mitigation between 5MHz and 10 MHz spectrums.
- Prepared Constrained and Unconstrained LTE Design reports and presentations for local AT&T team
- Developed macros to calculate the RF configuration parameters
0-5 years of experience
Responsible for optimizing 3G voice for 1900 and 850 on Sprint Networks.
- Running Monte Carlo simulation based for both 1st and 2nd baseline RF design, including Scrubbing and selecting sites
- Performed link budget analysis, understand and utilize design criteria including coverage and traffic analysis
- Defined the minimum Ec level that will be used for creating market optimization area and statistics
- Knowledge in using Capesso to optimized design and LTE overlay so that statistics can be run on the same area
- Optimized EC at the same time improved EC/Io using Capesso
- Optimized azimuth, tilt, and antenna changes
0-5 years of experience
- Performed high frequency design work, MMIC implementation and subsystem design up to 40 GHz on soft substrates. Worked with LMDS and Microwave Link transceivers (25-30GHz range) and redesigned or troubleshot recurring problems with existing designs
- Worked with PLLs, crystal oscillators, dielectric resonant oscillators, signal mixing, amplification, temperature compensation, impedance matching and power supplies
- Designed a Lange coupler and various filters on ceramic substrates using Ansoft HFSS.
- Performed LNA, Mixer, Image Reject Mixer and PA MMIC characterization for third order intercept, gain and spurious signals and directed technicians in the test routines. Designed impedance matching circuits and bias decoupling circuits for these MMICs
- Performed DRO and VCO modeling
0-5 years of experience
Responsible for the development, design and expansion of a CDMA network for Sprint PCS Washington, DC/Baltimore market.
- Monitored project tasks and provided support to client for completion of milestones.
- Performed RF propagation studies of site data via PlaNet prediction tool for selection of appropriate cellular site
- Defended Sprint's RF design needs in local zoning, city council, and landmark committee meetings.
- Accompanied site acquisition and construction teams on Site Tech-team walks.
0-5 years of experience
- Developed circuitries for Ultra Wide Band impulse radio data transceivers for location awareness applications.
- Designed LNA amplifiers, variable gain amplifiers, and current-mode electromagnetic antennas.
- Performed ranging and position awareness accuracy measurements, and evaluated mesh network topology performance.
0-5 years of experience
- Led the implementation of WJ's first Silicon design flow for RF integrated circuits.
- Designed and tested building blocks such as LNA, MIXER, PLL etc.
- Participated at a leadership level for the design, development and verification of Radio Frequency
0-5 years of experience
- Successfully developed high performance electronically tunable finline filters and diplexers.
- Simulated and optimized slot and aperture-coupled patch antennas by using Ansoft HFSS.
- Successfully developed compact 500MHz to 1000MHz electronically tunable switched filter bank.
0-5 years of experience
- Managed a staff of 5 engineers in support of the design, development and configuration of the corporation's wireless network in the Baltimore-Washington market.
- Lead the RF design team through the planning and preparation of the build plan using subscriber forecasts, RF propagation tools, trouble tickets, network statistics and traffic predictions.
- Coordinated the planning and execution efforts to modify hundreds of existing cell sites to enhance the network's performance and meet coverage, capacity and quality objectives.
0-5 years of experience
Provided RF engineering services to AWS National Engineering Team for coverage assessment requirements of specific markets.
- Analyzed network coverage for TDMA850 and GSM1900 networks in states of Oregon, Nevada and Washington using PlaNet.
- Analyzed model tuning and propagation models according to latest drive test results
- Compared and verified each market's site databases, worked in conjunction with local market engineers on updates and corrections.
0-5 years of experience
- Primary responsible for designing high-speed thin-film components using Alumina substrate.
- Designed calibration substrates, attenuators and high-speed terminators to 40GHz.
- RF testing of CONNECTOR and PASSIVE components using custom built calibration substrate.
- CONNECTOR tuning, I/O filtering and custom network trouble shooting.
- Designed thin-film/thick-film attenuators (50 Ohms impedance and 75 Ohms impedance designs). Attenuators design frequency range up to 6GHz.
- Designed standard resistors and customized termination respect to customers' requirements.
- Designed custom specific capacitors after pre-analyzing with performance using 2D/3D simulations.
- Provided extensive support to incoming customers and gained their business by providing Electro-Magnetic (3D-Coplanar) simulation data.
0-5 years of experience
Performed performance testing of new and existing cell sites.
- Utilized computer-assisted engineering and design software to complete the design of cell sites.
- Verified project compliance with the required federal regulatory bodies.
- Prepared accurate specifications for purchase of specialized materials for purchasing group.
0-5 years of experience
- Developed electronic architecture for a long range OC-192 Transponder utilizing proprietary modulation signal processing techniques.
- Developed the 10 GHz broadband MMIC based Lithium Niobate modulator driver amplifiers and non-reflective transition time control filters, which resulted in significant cost, power, and size savings for the end product
- Responsible for high-precision analog circuit design of the modulator automatic bias control, laser TEC temperature control, automatic data skew control functions, and switching-mode regulators.
0-5 years of experience
- Performed Personnel Locator System (PLS) receiver circuit design including 1st LO frequency synthesizer, RF front end, squelch, audio and mechanical layout. Troubleshot and fully tested my designs including flight-testing. PLS was used extensively in Gulf War.
- Designed transmitter synthesizer for Personnel Locator System.
- Designed I and Q vector modulator and frequency multiplier.
6-10 years of experience
[company name] is a small cell solution services company utilizing our proprietary small cell BTS. I designed hundreds of sites mainly in the CDMA/ EVDO and GSM/HSDPA environment. Many of these sites have been successfully installed in hard to deploy areas, replaced obsolete indoor units (i.e. iDEN) and costly DAS systems using our enterprise units, and improved site performance by adding sites to poorly designed networks. As a result, drop and block calls improved and coverage have dramatically enhanced.
- I designed in LTE sites and have excellent understanding of the technology. I've created RSRP, RSRQ, SINR, and Throughput plots to present to our clients.
- I brought to the company years of System Performance experience and established a process for optimization and field testing. I provided support to field operations engineers to troubleshoot sites, coordinate drive tests, and make parameter settings recommendation. I reviewed KPI and drive test data to solve handover and call setup failures, call drops and blocks, and other optimization related issues. From time to time, I also drive tested to collect voice and throughput data which I post-process and analyze.
- Besides outdoor design, I also carry out in-building design utilizing iBwave Design software.
- I evaluated and field tested our small-cell BTS products during their infancy before becoming certified. Hundreds of voice calls and data sessions were made, in which post processed data were conveyed to the system engineers to fine tune the performance, only to have repeated the test cycle many times again before the units passed the system requirements.
- I am also familiar with test equipment such as BVS transmitter and receiver, and a spectrum analyzer.
- I collaborated with Site Acquisition and Zoning Planner to follow procedures and compliance to properly deploy sites.
- I tested and evaluated several applications and recommended many that the company is now using.
- The tools that I frequently use, but not limited to, are EDX Signal Pro, iBwave, MapInfo, and Nemo.
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