The **BWA-9O2-C** is a high-performance, omnidirectional antenna designed for industrial wireless communication. It is primarily used with **Banner Engineering’s DX80 Wireless Gateways and Nodes** (SureCross series) to extend the range and reliability of 900 MHz radio networks. --- ### 1. Technical Specifications The electronic performance of the BWA-9O2-C is defined by its ability to radiate signals uniformly in a horizontal plane while maintaining high efficiency. | Feature | Specification | | :--- | :--- | | **Frequency Range** | 902 – 928 MHz (ISM Band) | | **Gain** | 2 dBi | | **Impedance** | 50 Ohms | | **Polarization** | Vertical | | **Radiation Pattern** | Omnidirectional (360°) | | **Connector Type** | RP-SMA (Reverse Polarity SMA) Male | | **VSWR** | ≤ 2.0:1 | --- ### 2. Key Electronic Components & Design #### A. Internal Radiating Element The core of the BWA-9O2-C is a **monopole or dipole radiating element** tuned specifically for the 900 MHz frequency. Because 900 MHz waves have a longer wavelength (approx. 33cm) than 2.4 GHz, the internal copper element is physically longer to achieve resonance, which allows for better penetration through obstacles like walls and foliage. #### B. The RP-SMA Connector The base uses a **Reverse Polarity SMA (RP-SMA)** connector. This is an industry-standard electronic interface for FCC-regulated wireless equipment. It ensures a secure, low-loss electrical connection between the antenna and the radio transceiver. #### C. Radome and Environmental Protection The internal electronics are encased in a UV-resistant **Fiberglass or Polycarbonate radome**. This protects the conductive elements from: * **Oxidation:** Preventing rust on the copper elements which would increase resistance. * **Static Discharge:** Helping to insulate the internal circuit from minor atmospheric static. --- ### 3. Application Use Cases Because it is an **Omnidirectional** antenna, the electronic signal spreads out like a donut shape. * **Point-to-Multipoint:** Ideal for a central Gateway communicating with several Nodes scattered in different directions. * **Mobile Equipment:** Since the signal is 360°, it maintains a connection even if the machine (e.g., an AGV) rotates. * **Industrial Hardening:** Designed to withstand the electrical noise (EMI) common in factory environments. --- ### 4. Integration Logic When connecting the BWA-9O2-C to a Banner Wireless device, the system follows this signal path: 1. **Transceiver:** Generates the RF signal. 2. **Coaxial Cable (Optional):** Carries the signal (must be 50 Ohm). 3. **BWA-9O2-C:** Converts the electrical current into electromagnetic waves via the 2 dBi gain element.