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I am seeking an experienced RF / electronics design freelancer to develop a complete RFID tag electronics solution for tracking equipment used indoors in high-humidity environments, such as laboratory instruments, workshop tools, and test equipment. The goal is to attach a small, flat, flexible, and lightweight shelf-style RFID tag (similar in form factor to book or library tags) to each asset. The tag must be rugged, low-profile, and suitable for attachment to fabric or textile surfaces, while remaining readable quickly and reliably by standard RFID readers. The system should enable identification of an item’s presence and approximate location within the facility. The tag must also be capable of reporting enclosure temperature and humidity via RFID. Scope of Work 1. RFID Technology Selection Evaluate and recommend the most suitable RFID technology (HF, UHF, or alternative) for: - unique code for each tag - short-range to medium-range indoor reads - operation in high-humidity environments - flexible, lightweight tag form factors Justify the selection based on read reliability, cost, scalability, and environmental robustness. - readable by smartphones is an advantage 2. Power Strategy Definition Define and justify the optimal power approach (passive vs. battery-assisted / semi-passive), considering: - achievable read range - feasibility of temperature and humidity sensing - expected operational lifespan - very low unit cost suitable for high-volume production 3. Electronics Design Design the complete RFID tag electronics, including: - RFID IC selection - temperature and Humidity sensing solution - Antenna design and matching network - Supporting circuitry required for reliable operation 4. Manufacturing-Ready Deliverables Provide complete, production-ready outputs: - Schematics - Bill of Materials (BOM) with manufacturer part numbers suitable for volume production - Compact multilayer PCB layout suitable for flexible or ultra-thin substrates - Gerber files, pick-and-place files, and fabrication / assembly notes 5. Test & Validation Plan Provide a concise test and validation plan covering: - Read distance verification - Orientation sensitivity - Performance in cluttered, humid indoor environments - Temperature and Humidity measurement verification and repeatability - Performance when attached to fabric or textile materials 6. Production & Manufacturing Guidance Provide advisory guidance on: - suitable PCB or flexible-substrate fabrication and assembly options - material selection appropriate for high-humidity and textile attachment - high-volume, low-cost manufacturing considerations Out of Scope RFID reader hardware or firmware Mechanical enclosure design (electronics only) Acceptance Criteria - The project will be considered complete when: - All design and manufacturing files listed above are delivered, and - Simulation results and/or bench test data demonstrate that: the tag can be reliably detected at ≥0.2 meters indoors through normal clutter when attached to fabric - temperature and humidity readings are accessible via RFID and function as specified
Project ID: 40197126
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30 freelancers are bidding on average $146 USD for this job

As a dedicated Electrical Engineer with specialized experience in firmware development, PCB design, and IoT product engineering, I am confident that I am the ideal fit for this project. Not only am I well-versed in creating low-profile, flexible, and lightweight solutions like the RFID tags you are seeking, but I am also skilled in selecting the most suitable RFID technology for various environments.
$325 USD in 7 days
8.3
8.3

With over a decade's worth of experience in electrical engineering, RF transmitter and receiver, embedded systems, and product design, I am confident that I am the most suitable candidate to devise your RFID solution. I have a deep understanding of power electronics such as AC/DC and DC-DC converters which will enable me to define and justify the best power approach for your tags while considering cost-effectiveness, lifespan, and expected read range. Moreover, my proficiency in schematic design by Altium, PCB design (Altium, Easyeda), and CAD files sourcing means you can expect thorough manufacturing-ready deliverables (schematics, BOM) as well as high-volume low-cost manufacturing guidance. My prior projects with renewable energy like wind turbines and solar panels also enhance my knowledge on handling high-humidity settings. In addition to this, I have a solid stronghold on Matlab which is relevant for testing various components of the project like the tag's readability in cluttered indoor environments or temperature measurement verifications through simulation. For your project to be considered complete I assure you all the design and manufacturing files mentioned will be delivered along with impeccable test results that meet your acceptance criteria. Thank you for considering me for this opportunity!
$84 USD in 7 days
7.5
7.5

As an experienced electrical engineer, I've honed my expertise in several areas that directly align with your project's unique requirements. Specifically, my extensive knowledge in RFID technology, power strategies (passive vs. battery-assisted), and electronics design makes me a perfect fit for developing your RFID tag electronics for indoor asset tracking. My previous successful projects involved challenging situations with high-humidity environments, just like what you expect from this project. I have mastered designing electronics to remain readable quickly and reliably by standard RFID readers in such conditions while ensuring data accuracy and efficiency. Even more impressive is my proficiency in temperature and humidity sensing solutions which is essential to your project. Additionally, my mastery of flexible substrate PCB layouts suitable for ultra-thin substrates will help ensure your RFID tags are lightweight, thin, rugged and low-profile - all key characteristics you mentioned in the project description. To make your experience complete, I'll also deliver manufacturing-ready outputs such as Schematics, BOMs and Gerber files among others along with test/validation plans to guarantee performance and data accuracy even in cluttered indoor environments. Choose me
$140 USD in 7 days
6.7
6.7

✅Okay, I got what you want exactly. I am a senior RF and electronics design engineer with over 10 years of experience, providing RFID system design, low-power sensor electronics, antenna tuning, and manufacturing-ready PCB development. In my opinion, the most reliable approach here is a battery-assisted UHF RFID tag using an ultra-low-power sensor front end, which allows stable temperature and humidity reporting without sacrificing tag thinness or cost. I would focus heavily on antenna detuning control for fabric and moisture exposure, since that’s where most indoor RFID projects fail in practice. This project is very similar to my previous works. I’ve designed a UHF RFID sensor tag using an Impinj Monza-based IC with an external SHT-series sensor, achieving ~0.6 m indoor read range on textile surfaces after tuning across three humidity conditions. I also delivered flexible PCB layouts (2-layer polyimide, 0.15 mm total thickness) and production BOMs optimized for sub-$1.20 unit cost at 50k volume. ✅ So, I will divide your project like following: ⚡ RFID technology and power strategy selection with justification ⚡ Sensor and RFID IC selection with full schematic design ⚡ Antenna design, matching, and textile detuning optimization ⚡ Flexible PCB layout, Gerbers, BOM, and manufacturing notes ⚡ Test and validation plan with expected performance metrics Best regards. Yaroslav
$140 USD in 7 days
5.3
5.3

Hello, I am an experienced RF and electronics design engineer specializing in low-power RFID and sensor-based hardware intended for high-volume, manufacturing-ready products. I can deliver a complete RFID tag electronics solution including: Selection of the most suitable RFID technology (HF / UHF) with clear justification Definition of the optimal power strategy (passive or battery-assisted) Full electronics design: RFID IC, temperature & humidity sensing, antenna and matching Production-ready outputs: schematics, BOM, compact PCB layout (flex or ultra-thin), Gerbers, and assembly files Test and validation plan covering indoor range, humidity impact, textile attachment, and sensor accuracy Manufacturing guidance for flexible substrates and low-cost mass production The design will meet the requirement of reliable indoor detection at ≥0.2 m, even in humid environments and when attached to fabric, with temperature and humidity data accessible via RFID. Looking forward to working with you. Best regards, Mahmoud Ibrahim
$140 USD in 7 days
5.3
5.3

Hi, I can deliver a complete, manufacturing-ready RFID tag electronics design optimized for indoor asset tracking in high-humidity environments. I will evaluate HF vs UHF (and NFC-hybrid options), define the optimal passive or battery-assisted power strategy, and design the full electronics stack including RFID IC, temperature/humidity sensing, antenna, and matching network for flexible ultra-thin substrates. Deliverables will include schematics, BOM with volume-ready parts, compact PCB/flex layout, Gerbers, PnP files, and assembly notes, plus a clear validation plan and production guidance to meet the ≥0.2 m fabric-mounted read requirement. Regards, Soas
$250 USD in 3 days
5.0
5.0

Hello! As an expert in RF and electronics design, I am well-prepared to tackle the challenge of creating an innovative RFID tag for indoor asset tracking with temperature and humidity sensing. Leveraging years of experience, I will meticulously design a robust, low-profile RFID tag tailored to high-humidity environments while ensuring rapid read rates for effortless asset identification. Using cutting-edge RFID technology, I will select the most suitable HF or UHF system, prioritize read reliability, scalability, and environmental durability. Additionally, I will craft a comprehensive power strategy, including passive or semi-passive approaches, to optimize read range and sensor functionality, ensuring cost-effectiveness for high-volume production. My meticulous electronics design will encompass RFID IC selection, temperature and humidity sensing solutions, antenna design, and supporting circuitry for seamless operation. By delivering manufacturing-ready outputs and a rigorous test plan, I will ensure the tag's performance in indoor settings, attachment to fabric, and precise measurement of environmental conditions. Let's embark on this project together to revolutionize indoor asset tracking. When can we commence?
$30 USD in 1 day
4.7
4.7

⭐⭐⭐⭐⭐ This is a well-defined RFID problem, and it’s exactly the kind of RF + low-power electronics work I handle. I’ve designed passive and battery-assisted RFID tags and sensor nodes for indoor asset tracking, including environments with moisture, clutter, and lossy materials like fabric. I understand the trade-offs between HF vs UHF, antenna detuning near textiles, and how humidity impacts both RF performance and materials. For this project I would: Evaluate HF (NFC) vs UHF RFID with a clear recommendation, including smartphone readability trade-offs Define a cost-optimized power strategy (passive or semi-passive) that realistically supports temperature + humidity sensing Select proven RFID sensor ICs and low-drift T/H sensors suitable for high humidity Design a thin, flexible antenna + matching network, accounting for fabric attachment and detuning Deliver manufacturing-ready schematics, BOM, PCB layout, Gerbers, and PnP Provide a practical validation plan focused on indoor clutter, orientation, humidity, and textile mounting Advise on flex PCB materials, coatings, and high-volume production methods I design with DFM and unit cost in mind from day one, not as an afterthought. The result will be a tag that reads reliably at your ≥0.2 m target and reports temperature/humidity consistently via RFID. Happy to discuss prior RFID sensor tag work and move quickly into the technology selection phase.
$140 USD in 1 day
4.7
4.7

THIS IS NOT THE AUTO BID, PLEASE REVIEW IT IN DETAIL I’ve reviewed your project and understand you’re looking for a comprehensive RFID tag solution tailored for indoor tracking in high-humidity environments. My background in electronics design and embedded systems positions me well to evaluate suitable RFID technologies, ensuring ruggedness and read reliability, especially when attached to fabric. I will define a robust power strategy that balances performance and unit cost for high-volume production, while designing the necessary electronics to include temperature and humidity sensing capabilities. My deliverables will be manufacturing-ready and will include all requisite documentation to ensure seamless production transitions. To move forward effectively, could you clarify if there are specific constraints regarding the tag dimensions or materials? Could you clarify if there are specific constraints regarding the tag dimensions or materials? Sincerely, Ibad
$50 USD in 1 day
4.3
4.3

Hello, I’m an electronics and RF design engineer with 8+ years of experience developing low-power RFID and sensor-based hardware for indoor asset tracking and harsh environmental conditions, and I’ve carefully reviewed your requirements end to end. I’ve led or contributed to 15+ production-ready PCB designs, including 6 RFID/NFC or UHF-based tags and beacons, several of which operated reliably in high-humidity (>85% RH) laboratory and industrial environments. For this project, I would first evaluate HF vs UHF vs battery-assisted RFID, clearly justifying the choice based on read reliability, humidity tolerance, smartphone compatibility, and unit cost, then lock the architecture early to control risk. I’ve previously designed ultra-thin (≤1.2 mm), flexible or semi-flex tags with integrated temperature and humidity sensing, achieving stable indoor read distances of 0.2–1.5 m depending on antenna size and attachment surface. I will deliver a manufacturing-ready electronics package including schematics, BOM with volume-ready MPNs, compact multilayer or flex PCB layout, Gerbers, pick-and-place files, and assembly notes suitable for scale. My antenna designs are always backed by simulation and bench validation, with orientation and fabric-attachment testing included. I also provide a clear validation plan and production guidance, helping clients move from prototype to 10k+ unit manufacturing efficiently. Best. Julian
$250 USD in 7 days
4.4
4.4

Best RFID & Electronics Design Partner ⭐⭐⭐⭐⭐ Hi Rostam, Thanks for sharing the scope clearly. I’ve supported multiple RF and embedded electronics projects where careful design, environmental robustness, and manufacturing-ready outputs were critical. Your project looks very doable. The goal is simple: deliver a complete RFID tag electronics solution that tracks indoor assets, measures temperature and humidity, and is flexible, lightweight, and reliable for high-humidity environments. ✅ How I’ll Help You Succeed 1. Evaluate and select the optimal RFID technology (HF/UHF) and power strategy (passive/semi-passive) for reliable reads, sensor integration, and high-volume production. 2. Design the complete electronics, including RFID IC, antenna, temperature & humidity sensing, and supporting circuitry optimized for flexible or ultra-thin substrates. 3. Deliver production-ready outputs: schematics, BOM, PCB layout, Gerber files, pick-and-place data, and assembly notes. ✅ I’ve delivered RF and sensor-based designs where performance, manufacturability, and environmental reliability were key, with clear documentation and validation for production. ✅ Before I start, one quick thing: Could you confirm the preferred RFID frequency (HF/UHF) or any tag size constraints for initial prototyping? If you share that, feel free to message me and we can align quickly. Best, Prat PCB Must Innovations
$250 USD in 2 days
6.5
6.5

Hello Rostam2000, I am excited about the opportunity to work on the RFID Tag Electronic Design project for Indoor Asset Tracking with temperature and humidity sensing. My expertise in RF and electronics design aligns well with the requirements outlined in the project description. In evaluating the most suitable RFID technology for this project, I will prioritize factors such as read reliability, cost-effectiveness, scalability, and environmental robustness. Additionally, I will focus on defining an optimal power strategy that ensures an achievable read range, reliable temperature and humidity sensing, and a cost-effective operational lifespan. My portfolio includes successful projects in RFID technology and electronics design, showcasing my ability to deliver high-quality solutions tailored to specific requirements. I am committed to providing regular updates and maintaining open communication throughout the project. I look forward to discussing the details further and collaborating on this innovative project. Best regards, Ramneet
$30 USD in 1 day
4.4
4.4

? Hello. I can take care of the complete RFID tag electronics design, from technology selection through manufacturing-ready files and validation planning, exactly in line with what you’re looking for. ?This project is right up my alley because I have done similar work before In a recent project, I designed a UHF RFID sensor tag for tracking calibration tools inside an electronics lab where humidity regularly exceeded 85 percent. I evaluated HF versus UHF performance in cluttered indoor spaces and selected a battery-assisted UHF approach to ensure stable reads near metal benches and fabric tool bags. ?Here are some of my questions to clarify. ★ Do you have a preferred frequency band or regional regulatory target such as FCC only or global use ★ Is smartphone readability a hard requirement or simply a nice-to-have feature ★ Are you open to a battery-assisted tag if it significantly improves humidity sensing reliability ★ Do you have a target maximum thickness for the flexible or ultra-thin substrate ★ Is there an expected annual production volume that should drive component and substrate choices ?Looking forward to collaborating with you! Shoot me a quick message here, and let’s chat more about you and the project. Best regards, Jeferen
$100 USD in 7 days
3.4
3.4

✅✅✅RF / RFID Electronics Design Engineer✅✅✅ Hi there, I’m an electronics engineer specializing in RFID, RF antenna design, and low-power sensor integration, with hands-on experience developing HF/UHF tags and battery-assisted RFID solutions for harsh indoor environments. I’ve delivered flexible, low-profile tag designs with integrated temperature and humidity sensing, optimized for reliable reads on fabric and cluttered spaces. My approach is to first select the optimal RFID technology and power strategy based on range, sensing feasibility, and unit cost, then design a manufacturing-ready schematic, antenna, and flexible PCB with validated matching. I focus on robustness, scalability, and clear documentation for high-volume production. Do you have a preferred frequency band or reader ecosystem? Is smartphone readability a hard requirement or a bonus? Are there target accuracy ranges for temperature and humidity sensing? I am ready to start immediately. Best regards
$50 USD in 5 days
2.7
2.7

Is your organization looking for an RFID tag solution that not only identifies your indoor assets but also provides real-time insights into temperature and humidity? One that can withstand the rigors of high-humidity environments and still deliver reliable readings? I can help you achieve that. Your project calls for an RFID tag system that maintains its integrity in high-humidity conditions and also provides temperature and humidity data. My extensive experience in RF/electronics design and sensor integration aligns perfectly with your project requirements. For your RFID technology selection, my approach would entail assessing the distinct characteristics of HF, UHF, or alternative technologies, with emphasis on their reliability, cost-efficiency, scalability, and resilience in your specific setting. Considering that your project requires interaction with smartphones, my recommendation would likely gravitate towards UHF RFID technology owing to its longer read ranges and compatibility with smartphones. In terms of power strategy, it would be necessary to strike a balance between the read range, feasibility of sensing capabilities, operational lifespan, and cost. I suggest a semi-passive approach, which can provide the long read-range you require while enabling the necessary sensing capabilities. For the electronics design phase, I would incorporate my proficiency in STM32, ESP32, PIC, and Atmel controllers to deliver a robust solution that will ensure reliable operation and allow for efficient manufacturing. Lastly, I would provide practical guidance on high-volume, low-cost manufacturing and material selection suitable for your high-humidity environment. I will deliver a complete package including schematics, BOM, compact multilayer PCB layout, and all necessary files. Furthermore, I will develop a clear test and validation plan to ensure the performance of the final product meets your expectations. With my experience in designing IoT-based systems and creating efficient, reliable solutions, I am confident that I can deliver an RFID tag that not only meets your tracking needs but also broadens your horizon into environmental monitoring within your facility.
$140 USD in 7 days
1.1
1.1

Hi, Rostam2000 Hope you are doing great I'll complete your RFID Tag Electronic Design for Indoor Asset Tracking with temperature and Humidity Sensing in accordance with your specifications. The design that I will give you to you will be a high-end, premium piece of work that will also be visually appealing to attract the attention of your target audience. Offering my design expertise for your project makes me happy. I've successfully completed projects like this in the past thanks to my experience, talent, and originality, so I know how to handle this. Here you can see my previous work: https://www.freelancer.com/u/zymaham If you have any questions or need further clarification, please feel free to connect with me in the chat. Regards Zymaham
$30 USD in 1 day
0.5
0.5

Hello, Having reviewed your requirements for an RFID tag electronics solution, I’m confident we can engineer a robust system tailored for high-humidity environments. Our experience in PCB layout, antenna design, and embedded systems equips us to deliver compact, efficient designs with reliable temperature and humidity sensing. Let's discuss your goals further! What specific operational lifespan are you expecting for the tags? Thanks, THE CALIFORNIA STUDIO
$40 USD in 3 days
0.0
0.0

Hey , I just finished reading the job description and I see you are looking for someone experienced in Electronics, Electrical Engineering, Product Descriptions, Prototyping, Product Design, Signal Processing, PCB Layout, Antenna Design, Manufacturing Engineering and Embedded Systems. This is something I can do. Please review my profile to confirm that I have great experience working with these tech stacks. While I have few questions: 1. These are all the requirements? If not, Please share more detailed requirements. 2. Do you currently have anything done for the job or it has to be done from scratch? 3. What is the timeline to get this done? Why Choose Me? 1. I have done more than 250 major projects. 2. I have not received a single bad feedback since the last 5-6 years. 3. You will find 5 star feedback on the last 100+ major projects which shows my clients are happy with my work. Timings: 9am - 9pm Eastern Time (I work as a full time freelancer) I will share with you my recent work in the private chat due to privacy concerns! Please start the chat to discuss it further.
$30 USD in 1 day
0.0
0.0

Hello, I’m an RF/electronics design engineer with experience developing low-profile RFID tags and sensor-enabled labels for indoor asset tracking in challenging environments. Your requirement—rugged, flexible, shelf-style tags readable through clutter and high humidity, with temperature and humidity reporting—fits well with RFID systems I’ve designed using both HF and UHF technologies. I can deliver: • A justified RFID technology and power strategy (passive vs. battery-assisted) optimized for range, cost, and sensing • Complete electronics design: RFID IC, T/H sensor, antenna, and matching network • Ultra-thin, flexible PCB layout suitable for textile attachment and humid conditions • Full manufacturing outputs (schematics, BOM, Gerbers, PnP) and validation plan The result will be a production-ready, low-cost tag design validated for reliable indoor reads and sensor reporting.
$140 USD in 5 days
0.0
0.0

RFID TAG ELECTRONIC DESIGN EXPERT NEEDED Dear Client, You’re looking to develop a compact, rugged RFID tag for indoor asset tracking with temperature and humidity sensing—readable even in high-humidity environments. This is exactly the type of end-to-end RF/electronics design I’ve delivered for over a decade, turning complex requirements into reliable, production-ready hardware. Here’s how I would approach your project: ✅Evaluate and select the optimal RFID technology (HF/UHF/semi-passive) for indoor reliability, low-cost production, and optional smartphone readability ✅Define power strategy (passive vs. battery-assisted) ensuring sensor operation, sufficient read range, and long lifetime ✅Design complete tag electronics: RFID IC, antenna & matching, temperature & humidity sensors, supporting circuitry I have 11+ years of experience in RF design, embedded electronics, flexible PCB development, and delivering production-ready, high-reliability hardware for challenging environments. Question: Do you have a preferred RFID frequency band or semi-passive architecture in mind, or should the design focus purely on robustness and manufacturability? I’d be happy to discuss the technical approach and help you bring a fully functional, sensor-enabled RFID tag from concept to production-ready hardware. Best regards, Avi Gupta
$250 USD in 2 days
0.0
0.0

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