I am Dr. Muhammad Ayaz, a PhD in Electrical Engineering, IEEE Professional Member, and Top-Rated Plus freelancer with 10+ years of experience in RF, microwave, antenna, and PCB design.
I specialize in designing high-performance antenna systems, RF/microwave circuits, and advanced PCB layouts for modern wireless and communication applications. I help clients transform concepts into manufacturable and prototype-ready hardware using advanced electromagnetic simulation, RF optimization, and high-speed PCB design techniques.
โญ Core Expertise
โ Antenna Design & Optimization
๐น Microstrip patch, monopole, dipole, slot & PIFA antennas
๐น Helical, horn, dielectric resonator (DRA) & reflector antennas
๐น Vivaldi, Yagi-Uda, loop & fractal antennas
๐น Single-element and antenna array designs
๐น Linear, circular, phased & beamforming arrays
๐น MIMO, dual-polarized & compact antennas
๐น 5G/6G, mmWave, UWB & wideband antennas
๐น Planar, conformal & wearable antenna structures
๐น Gain, bandwidth & impedance matching optimization
๐น RF performance enhancement and antenna miniaturization
โ RF & Microwave Engineering
๐น RF front-end and microwave circuit design
๐น Filters, couplers, power dividers & matching networks
๐น RF system integration & optimization
๐น Signal integrity and RF performance analysis
๐น Microwave passive component design
โ PCB Design & Fabrication
๐น RF & high-speed PCB layout (1โ10 layers)
๐น Controlled impedance routing
๐น EMI/EMC-aware PCB design
๐น Compact and manufacturable PCB layouts
๐น PCB fabrication support and prototype development
๐น Altium Designer, KiCad & OrCAD PCB development
โ Simulation & Engineering Tools
๐น CST Microwave Studio Suite
๐น HFSS (High Frequency Structure Simulator)
๐น ADS (Advanced Design System)
๐น AWR Microwave Office
๐น Altium Designer, KiCad & OrCAD
๐น MATLAB, LTSpice, PSpice & Multisim
โ Antenna Testing & Validation
๐น Fully calibrated anechoic chamber facility
๐น Vector Network Analyzer (VNA) based RF measurements
๐น Antenna testing and performance validation
๐น S-parameters (S11), VSWR & radiation pattern measurements
๐น RF tuning, debugging & optimization
๐น Prototype bring-up and hardware verification
โญ Why Clients Choose Me?
๐น PhD specialist in RF, microwave, antenna & PCB systems
๐น Strong research and industry experience
๐น Proven success as a TOP-RATED PLUS freelancer
๐น Real hardware prototyping and testing capabilities
๐น Focus on performance, reliability & manufacturability
๐น Professional communication and on-time delivery
๐น End-to-end support from concept to prototype and testing
โญ Project Types
๐น Antenna design & optimization
๐น RF/microwave circuits & systems
๐น Antenna arrays & beamforming systems
๐น RF PCB layout & high-speed PCB design
๐น PCB fabrication and prototype support
๐น Antenna measurement & RF testing
๐น Integrated RF + PCB solutions
If you need a senior engineer in RF, microwave, antenna, and PCB design who understands both theory and real-world implementation, including fabrication and testing support, letโs discuss your project.
โญ Budget & Ordering
Available for both fixed-price and hourly projects ($50/hour).
Contact me today to discuss your project requirements.
Best Regards,
Dr. Muhammad Ayaz
PhD | Senior RF, Microwave, Antenna & PCB Design Engineer
Antenna Design
Antenna Testing
Antenna Measurement
RF Design
Electromagnetic Simulation Software
KiCad
PCB Design
Multilayer PCB
Altium Designer
OrCAD
MATLAB
RF Microwave Design
Circuit Design
Integrated Circuit
Electronic Circuit Design
Hammad S.
Jhelum, Pakistan
$20/hr
5.0
21 jobs
I have designed 30+ real-world components used in defence systems, DC fans, and kitchen appliances handling everything from design and simulation to fabrication and testing myself, so you get complete, working hardware solutions from one expert.
I am an RF, PCB, and Embedded Systems Engineer with strong hands-on experience in building complete hardware products. I have worked on real-world RF systems including high-power amplifiers, transmitter-receiver designs, RF filters, and antenna systems for communication and defence-related applications. I specialize in RF design, antenna design and testing, wireless communication, and high-quality PCB design including multilayer boards using Altium Designer and KiCad. I also work on circuit design, analog electronics, RF filters and amplifiers, and embedded systems using STM32, ESP32, and Arduino. I have successfully delivered reliable, tested, and production-ready designs that perform well in real-world conditions.
For large and challenging projects, I collaborate with a trusted team of highly skilled professionals, so we can deliver a complete, fully working product including hardware, software, and mechanical design all in one place.
โ RF & Microwave Circuit Design
โ RF System Design (Transmitter & Receiver)
โ RF Front-End Design
โ RF Power Amplifier Design (Low, Medium & High Power)
โ LNA (Low Noise Amplifier) Design
โ RF Filters Design (Bandpass, Low-pass, High-pass)
โ Impedance Matching & RF Tuning
โ Antenna Design (Patch, Monopole, Dipole, Custom)
โ Antenna Simulation & Optimization
โ Antenna Testing & Performance Measurement
โ Wireless Communication System Design
โ RF Signal Chain Development
โ Frequency Planning & Spectrum Analysis
โ PCB Design (Single Layer, Double Layer, Multilayer)
โ High-Speed PCB Design
โ RF PCB Layout & Controlled Impedance Design
โ Schematic Design & Circuit Layout
โ PCB Design using Altium Designer, KiCad & EasyEDA
โ Gerber File Generation & Manufacturing Support
โ Design for Manufacturing (DFM) & Assembly (DFA)
โ PCB Debugging & Optimization
โ Electronic Circuit Design
โ Analog Circuit Design
โ Amplifiers & Signal Conditioning Circuits
โ Sensor Interface Circuit Design
โ Power Electronics Circuit Design
โ Hardware Troubleshooting & Debugging
โ Embedded Systems Design
โ Embedded Hardware Development
โ Microcontroller-Based System Design
โ Microcontroller Programming (STM32, ESP32, Arduino, AVR)
โ Embedded C & C++ Development
โ Firmware Development
โ IoT Device Development (WiFi, LoRa, ESP32)
โ Raspberry Pi-Based Projects
โ FPGA Design & Development
โ Verilog / VHDL Based Design
โ Digital System Design on FPGA
โ Simulation & Timing Analysis
โ FPGA Prototyping & Testing
โ Electromagnetic Simulation (HFSS, CST, ADS)
โ Circuit Simulation (LTspice, PSPICE, MATLAB)
โ EM & RF Co-Simulation
โ Signal Integrity & EMI/EMC Analysis
โ Hardware Prototyping
โ Product Development from Concept to Prototype
โ Functional Testing & Validation
โ Performance Measurement & Optimization
โ Test Results Analysis & Reporting
โ Technical Writing (Engineering Reports & Documentation)
โ Research Paper Writing (IEEE Format)
โ Project Documentation & Reports
โ RF & Electronics Content Writing
โ Complete Product Design (Hardware + Embedded + RF + FPGA)
โ Prototype to Production Support
โ Real-World Testing & Field Validation
โ Engineering Simulation & Optimization
Antenna Design
RF Design
Antenna Testing
PCB Design
Multilayer PCB
Altium Designer
KiCad
Embedded System
FPGA
STM32
ESP32
Hardware Design
Electromagnetic Simulation Software
RFID
Eagle
Electrical Engineering
Digital Electronics
Arduino
Usama S.
Quetta, Pakistan
$40/hr
5.0
49 jobs
If you have a new antenna design that needs to perform in a challenging RF environment, requires optimization to meet specifications, or presents complex RF issues, I can help.
With extensive experience in antenna and RF design, along with advanced expertise in electromagnetic simulation software, I specialize in designing, modeling, and testing antenna systems from concept to final product.
Over the years, I have worked on a diverse range of RF applications, from 5G/6G communications, phased arrays, and satellite systems to medical antennas, IoT, and autonomous vehicle antennas. My expertise includes:
โ High-performance antenna arrays โ Phased arrays, MIMO, beamforming, and RIS antennas.
โ 5G & 6G Wireless Systems โ mmWave, sub-6 GHz, and reconfigurable antennas.
โ Medical & Wearable Antennas โ On-body sensors, implantable, and microwave imaging antennas.
โ Satellite & Aerospace Applications โ High-gain reflectors, waveguides, and ground stations.
โ Electromagnetic Simulations & Analysis โ CST Microwave Studio, HFSS, ADS, and AWR MW Office.
โ RF & Microwave Circuit Design โ Power dividers, couplers, filters, and matching networks.
โ PCB & Prototyping โ Multi-layer RF PCB design and fabrication.
โ RFID & IoT Solutions โ UHF, HF, LF RFID antennas, and reader integration.
โ Circular & Dual-Polarized Antennas โ For improved signal stability, coverage, and multipath mitigation.
Antenna Design
Antenna Testing
Antenna Measurement
RFID
ANSYS
RF Microwave Design
RF Design
Nadeem A.
Layyah, Pakistan
$25/hr
4.7
29 jobs
Iโm a highly skilled and detail-oriented PCB Design Engineer with over 3 years of experience in designing robust, efficient, and cost-effective printed circuit boards for various industries including consumer electronics, automotive, medical devices, and industrial automation.
I specialize in converting complex circuit ideas into manufacturable and reliable PCB layouts. From schematic capture to final Gerber generation and fabrication-ready documentation, I ensure every step is precise and optimized for performance and manufacturability.
๐นMy Expertise Includes:
* PCB Design (2 to 16+ Layers)
* Schematic Capture & Hardware Architecture
* Embedded Hardware Design (STM32, ESP32, Nordic nRF, AVR, PIC)
* Analog, Digital & Mixed-Signal Circuit Design
* High-Speed PCB Design (USB, Ethernet, HDMI, DDR, PCIe)
* RF PCB Design & Impedance Controlled Routing
* Power Supply Design (Buck, Boost, LDO, Battery Management)
* AC-DC & DC-DC Power Electronics
* IoT Device Development
* Sensor Interface Design
* Industrial Control Electronics
* Signal Integrity & Power Integrity
* EMI/EMC Optimization
* Thermal Management
* High Current PCB Design
* Differential Pair Routing
* Controlled Impedance Design
* Design for Manufacturing (DFM)
* Design for Assembly (DFA)
* Component Selection & Lifecycle Management
* Prototype Development & Manufacturing Support
๐นPCB Design Services
*Electronic Product Development
*Circuit Design & Schematic Capture
*PCB Layout & Routing
*Hardware Design Review
*Existing PCB Modification
*Reverse Engineering
*PCB Migration Between CAD Tools
*Cost Optimization & BOM Engineering
*Manufacturing Documentation
*Prototype Validation Support
๐นTools I Use:
* Altium Designer
* KiCad
* Eagle
* OrCAD / Cadence Allegro
* EasyEDA
* LTspice / PSpice / Multisim (for simulation)
* AutoDesk Fusion 360 (for 3D enclosure fit checks)
๐นDeliverables You Can Expect:
* Complete schematic and PCB layout files
* BOM (Bill of Materials)
* Gerber, drill, and pick-and-place files
* 3D PCB renders
* Assembly drawings and fabrication documentation
* Technical support during prototype and production phases
๐นIndustries
*Industrial Automation
*Consumer Electronics
*IoT Products
*Medical Electronics
*Automotive Electronics
*Smart Home Devices
*Wearable Electronics
*Power Electronics
*Robotics
*Communication Systems
๐นWhy Choose Me?
โ 100% custom and tailored designs
โ Fast turnaround and clear communication
โ Focus on reliability, quality, and cost optimization
โ NDA-friendly and IP protection guaranteed
Whether you're developing a new electronic product, improving an existing design, or preparing hardware for manufacturing, I can help transform your concept into a reliable, high-quality, production-ready PCB solution.
PCB Design
Multilayer PCB
KiCad
Altium Designer
EasyEDA
FPGA
Electrical Design
Electrical Engineering
Electronics
Digital Electronics
Circuit Design
Schema Diagram
Firmware Programming
ESP32
Embedded C
Power Electronics
STM32
Product Development
Design for Manufacturing
Hardware Design
Muhammad H.
Islamabad, Pakistan
$20/hr
4.6
352 jobs
With over 13 years of experience in PCB designing, hardware development, and component sourcing, I have successfully designed and implemented a wide range of projects. My expertise spans various domains, including FPGA-based systems, BLE (Bluetooth Low Energy), IoT (Internet of Things), NB-IoT (Narrowband Internet of Things), and power supply circuits.
Key Highlights:
- **PCB Design**: Proficient in creating intricate PCB layouts, including high-speed, differential pairs, and RF track and antenna routing.
- **Layer Stack-Up**: Accomplished designs with up to 16 layers, ensuring optimal signal integrity and performance.
- **EDA Tools**: Adept at using industry-standard EDA tools, including:
- **Altium Designer**: Leveraging Altium's comprehensive suite for schematic capture, PCB layout, and 3D visualization.
- **Autodesk Eagle and Eagle 360**: Familiar with Eagle's user-friendly interface and cloud-based collaboration features.
- **Mentor Pads9.5 and Mentor Graphics PADS Pro VX.2.10**: Experienced in constraint-driven design and signal integrity analysis.
- **Orcad Allegro 17.2**: Proficient in complex PCB designs using Cadence's powerful toolset.
- **KiCad**: Skilled in open-source PCB design with KiCad, benefiting from its community-driven development.
- **PCBweb, EasyEDA & Fritzing**: Versatile in using online platforms for various design requirements.
- **MCUs and Processors**: Proficient with various microcontrollers (MCUs) and processors, including:
- STM32 family (e.g., STM32F4, STM32H7)
- Atmega series (e.g., Atmega328P)
- PIC microcontrollers (e.g., PIC16, PIC18)
- ARM Cortex-M series (e.g., Cortex-M0, Cortex-M4)
- ESP8266 and ESP32
- Raspberry Pi (ARM-based)
- Intel x86 processors (e.g., Core i7, Xeon)
- AMD Ryzen processors
- **FPGA Expertise**: Versed in designing for various FPGA families, tailoring solutions to project-specific requirements.
- **Bluetooth Low Energy (BLE)**: A wireless, low-power communication standard for IoT devices.
- **Global Navigation Satellite System (GNSS)**: Satellite-based positioning systems (e.g., GPS, Galileo) for location tracking.
- **Narrowband IoT (NB-IoT)**: Cellular technology designed for low-power, wide-area IoT applications.
- **Quality of Service (QoS)**: Ensuring reliable and predictable performance in IoT networks.
PER hour rate for 2 Layer PCB=$10
PER hour rate for 4 Layer PCB =$20
PER hour rate for 6 Layers PCB=$25
Altium Designer
KiCad
STM32
Eagle
PCB Design
RF Design
nRF52
FPGA
ESP32
Arduino
nRF51
C
Embedded System
Firmware Programming
Ahad M.
Lahore, Pakistan
$25/hr
4.8
38 jobs
I built and design the PCB, write the firmware, model the enclosure, and build the IoT app that controls it. Products I have built are live on Google Play, the App Store, and in the hands of US/EU customers right now.
I'm a ๐๐๐ง๐ข๐จ๐ซ ๐๐ฆ๐๐๐๐๐๐ ๐๐ฒ๐ฌ๐ญ๐๐ฆ๐ฌ & ๐๐จ๐ ๐๐ง๐ ๐ข๐ง๐๐๐ซ with a Master's in Embedded Systems and a Bachelor's in Computer Engineering. I take products end-to-end from PCB design, firmware, enclosure, IoT mobile app, to cloud, so you get one Partner accountable for the whole stack instead of coordinating four of them.
๐๐ฌ๐ ๐๐๐ฌ๐๐ฌ ๐ ๐๐ฉ๐๐๐ข๐๐ฅ๐ข๐ณ๐ ๐๐ง:
โ Consumer electronics, smart home devices, connected appliances
โ Audio and DSP products, Audio/Sound Devices, real-time processing
โ Stepper motor, CNC Machines, 3D Printers, Stepper Motors, Driver, DC Generators, Energy Harvesting
โ Smart RGB light control Systems, Hall Effect Systems
โ Industrial IoT, Home automation, Modbus/CAN gateways, CAN telematics
โ Medical devices, wearables, monitoring systems, Automotive
โ Asset tracking, smart agriculture, LoRaWAN sensor networks
๐๐๐๐ก๐ง๐ข๐๐๐ฅ ๐๐ฑ๐ฉ๐๐ซ๐ญ๐ข๐ฌ๐:
๐๐ข๐๐ซ๐จ๐๐จ๐ง๐ญ๐ซ๐จ๐ฅ๐ฅ๐๐ซ๐ฌ & ๐๐จ๐๐ฌ: STM32, ESP32 (S2/S3, A1S Dual-Core, ESP8266), Arduino (Nano, Mega, Mini, Pro, Uno), Nordic nRF52840/nRF5340, AVR (ATmega, ATtiny), PIC16/PIC18/PIC32, Raspberry Pi, Cortex-M0/M0+/M3/M4/M7/M33, Cortex-A53/A72/A76, Cortex-R4/R5/R52, Teensy 4.1, FPGA
๐ ๐ข๐ซ๐ฆ๐ฐ๐๐ซ๐: Embedded C/C++, MicroPython, ARM Assembly, Verilog/SystemVerilog, VHDL. FreeRTOS, Azure RTOS (ThreadX). Bare-metal, HAL, and LL driver development. STM32CubeIDE, ESP-IDF, PlatformIO, Arduino, CMake, GCC Arm toolchain.
๐๐๐ ๐๐๐ฌ๐ข๐ ๐ง: Expertise in 2-12 layer boards, rigid & flex, and HDI designs using Altium Designer, KiCad, and Eagle, with a focus on high-speed signal integrity, impedance matching, thermal design, high-current routing, and RF layout including Pi-network antenna tuning.
๐๐๐๐ก๐๐ง๐ข๐๐๐ฅ/๐๐ง๐๐ฅ๐จ๐ฌ๐ฎ๐ซ๐ ๐๐๐ฌ๐ข๐ ๐ง: Proficient in SolidWorks, Fusion 360, and AutoCAD for injection-molding-ready designs, SLA/FDM 3D printing, IP65/IP67/IP68 waterproofing, and advanced thermal management.
๐๐๐ซ๐ข๐ฉ๐ก๐๐ซ๐๐ฅ๐ฌ & ๐๐ฎ๐ฌ๐๐ฌ: I2C, SPI, UART, CAN (CANOpen, J1939), USB HID, PCIe, DMA, PWM, ADC/DAC, I2S/PDM audio, EEPROM/Flash.
๐๐จ๐ง๐ง๐๐๐ญ๐ข๐ฏ๐ข๐ญ๐ฒ: Wi-Fi, BLE 5.x, LoRa/LoRaWAN, NFC/RFID (MiFare, ISO14443), LTE-M, NB-IoT, 4G LTE, u-blox GNSS (M8/M10), RS485, RS232, Modbus RTU/TCP, Ethernet.
๐๐จ๐ & ๐๐ฅ๐จ๐ฎ๐: MQTT/MQTTS, HTTPS, WebSockets, TLS 1.3, JSON-RPC. AWS IoT Core, Azure IoT Hub, Google Cloud IoT, Blynk, ThingsBoard, Tuya.
๐๐ฉ๐ฉ๐ฌ & ๐๐ง๐ญ๐๐ซ๐๐๐๐๐ฌ: Flutter, React Native, React.js, Vue.js, Node-RED, Firebase, PWAs. Qt for Embedded, PyQt5. OLED, TFT, IPS, E-Paper, LED Matrix, 7-Segment, rotary encoders.
๐๐๐๐ฎ๐ซ๐ข๐ญ๐ฒ & ๐๐จ๐ฆ๐ฉ๐ฅ๐ข๐๐ง๐๐: Secure Boot, AES, ECC, OTA updates. Design-for-certification for CE, FCC, EMI/EMC, ESD (IEC 61000-4-2), UL, ISO 9001/13485.
๐๐ฒ ๐๐จ๐ฅ๐ฅ๐๐๐จ๐ซ๐๐ญ๐ข๐ฏ๐ ๐๐ฉ๐ฉ๐ซ๐จ๐๐๐ก:
โ Clear weekly progress updates, often including demo videos, schematics, firmware commits, and simulation results.
โ Version-controlled deliverables (Git) and meticulously documented, clean code.
โ Transparent communication regarding progress, challenges, and potential risks.
โ Strong research-driven approach focused on solving technically difficult problems efficiently.
โ Open to starting with a paid pilot project before committing to a larger scope.
๐๐๐ญ'๐ฌ ๐๐๐ฅ๐ค ๐๐ ๐๐จ๐ฎ ๐๐๐๐
A reliable partner to design a new product from scratch, rescue a stalled hardware project, and control systems, port firmware between MCU families, add IoT/cloud connectivity to an existing device, or build the mobile app and backend that makes your hardware actually useful.
Invite me to your Job or send me a message with your product concept, current stage, and what's blocking you.
Embedded System
PCB Design
Firmware Programming
C++
ESP32
STM32
Internet of Things
Hardware Prototyping
Python
Embedded C
Raspberry Pi
Altium Designer
Product Development
Digital Signal Processing
Arduino Firmware
Mechanical Design
Audio Engineering
KiCad
ARM Cortex-M
TinyML
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