<h1>Passive UHF RFID Tag: An In-Depth Exploration</h1> <p>In my years working with RFID technology, the evolution of the <strong>passive UHF RFID tag</strong> has been nothing short of remarkable. My personal experience began with struggling to read tags on metal surfaces, a common industry pain point. Over time, I developed a knack for understanding antenna design and impedance matching, which is less a formal skill and more of a learned intuition for how these tags interact with different materials. This journey has solidified my opinion that while the chip is the brain, the antenna is the true heart of a high-performance <strong>passive UHF RFID tag</strong>.</p> <h2>Technical Specifications and Parameters</h2> <p>To truly appreciate their capability, let's examine the technical details of a representative high-performance inlay. The specifications below are for a common monostatic dipole design optimized for general-purpose use.</p> <h3>Detailed Product Parameters</h3> <h4>Chip and Memory Configuration</h4> <ul> <li><strong>Chip Model:</strong> Impinj Monza R6-P (NXP UCODE 8 is another prevalent alternative)</li> <li><strong>Operating Frequency:</strong> 860 MHz - 960 MHz (Fully compliant with global UHF RFID protocols)</li> <li><strong>Memory:</strong> 96-bit or 128-bit EPC memory, 64-bit TID, 32-bit User memory</li> <li><strong>Read Sensitivity:</strong> Typically -18 dBm to -22 dBm (enabling long read ranges)</li> <li><strong>Write Sensitivity:</strong> Typically -16 dBm to -20 dBm</li> </ul> <h4>Physical and Performance Metrics</h4> <ul> <li><strong>Inlay Dimensions:</strong> 100mm x 20mm (Standard label size; custom sizes from 30mm upwards are available)</li> <li><strong>Antenna Material:</strong> Etched or printed aluminum/copper on PET/PI substrate</li> <li><strong>Read Range:</strong> Up to 10 meters (highly dependent on reader power and environment)</li> <li><strong>Data Retention:</strong> > 50 years</li> <li><strong>Write Endu