The **ALR-613-R** is a high-performance **RFID Antenna** designed specifically for ruggedized industrial environments and long-range tracking applications. It is a circular polarized antenna, which makes it highly effective at reading tags regardless of their orientation. --- ### 1. Key Technical Specifications The following table highlights the core electronic and physical attributes of the ALR-613-R: | Parameter | Specification | | :--- | :--- | | **Frequency Range** | 865 - 928 MHz (Global/Broadband) | | **Gain** | 6.0 dBiC (Circular) | | **Polarization** | Circular (Right Hand or Left Hand available) | | **Beamwidth** | 80° x 80° (Wide Coverage) | | **VSWR** | ≤ 1.3:1 (Voltage Standing Wave Ratio) | | **Input Impedance** | 50 Ohms | | **Connector Type** | N-Type Female | | **IP Rating** | IP67 (Dust/Waterproof) | --- ### 2. Core Electronic Components & Design #### A. Circular Polarization (6.0 dBiC) Unlike linear antennas, the ALR-613-R uses circular polarization. This electronic design allows the antenna to emit a "spiraling" electromagnetic wave. This is critical for logistics because it ensures that an RFID tag can be read whether it is positioned vertically, horizontally, or diagonally. #### B. Broadband Frequency Support The antenna is engineered to operate across the full UHF RFID spectrum (865-928 MHz). This allows a single hardware unit to be deployed globally, complying with both FCC (North America) and ETSI (Europe) regulations without requiring different internal components. #### C. Low VSWR (Voltage Standing Wave Ratio) The internal impedance matching is tuned to a VSWR of 1.3:1. This electronic efficiency means that very little power is reflected back to the reader, maximizing the energy transmitted to the RFID tags and extending the read range (typically up to 6-9 meters depending on the reader power). #### D. Ruggedized Housing The internal circuitry is protected by a heavy-duty radome (outer shell). The **IP67 rating** indicates that the electronic connections are sealed against immersion in water and are completely dust-tight, making it suitable for outdoor or warehouse dock-door installations. --- ### 3. Connection & Integration The antenna typically connects to an RFID Reader (like the Alien ALR-F800) using a high-quality coaxial cable. ```bash [RFID Reader] <----(Coaxial Cable)----> [N-Type Connector] <---- [ALR-613-R Antenna] ``` ---