The **WJFT5-HA2-R** is a specific technical component, typically identified as a **High-Frequency Waveguide-to-Coaxial Adapter** or a specialized RF (Radio Frequency) connector assembly used in telecommunications and satellite ground stations. Below is a detailed breakdown of its electronic and mechanical specifications. --- ### 1. General Specifications This part is designed to transition signals between different transmission mediums (Waveguide to Coaxial) with minimal loss and reflection. | Feature | Specification | | :--- | :--- | | **Component Type** | Waveguide-to-Coaxial Adapter | | **Waveguide Size** | WR-75 or WR-90 (Commonly used in Ku-Band) | | **Interface Type** | SMA or N-Type Female (Coaxial side) | | **Frequency Range** | Typically 10.0 GHz – 15.0 GHz | | **VSWR** | ≤ 1.25:1 (Voltage Standing Wave Ratio) | | **Material** | Aluminum or Brass with Chromate conversion/Painting | --- ### 2. Key Electronic Parts & Construction The internal architecture of the WJFT5-HA2-R consists of several critical elements that ensure signal integrity: #### A. The Waveguide Flange * **Purpose:** The input/output port for microwave signals. * **Design:** Usually a square or rectangular flange with precision-drilled bolt holes for airtight and electromagnetic sealing. #### B. The Transition Probe (Exciter) * **Function:** This is the core "electronic" interface. It is a small metallic pin that extends from the coaxial center conductor into the waveguide cavity. * **Mechanism:** It acts as a small antenna, converting the electromagnetic fields (TE10 mode) inside the waveguide into a current/voltage signal for the coaxial cable. #### C. Impedance Matching Structure * **Details:** The interior of the "HA2" housing is precisely machined. It often includes a "step" or a "tuning screw" to match the 50-ohm impedance of the coaxial side to the characteristic impedance of the waveguide. #### D. Dielectric Support * **Material:** Usually Teflon (PTFE). * **Role:** Holds the center pin in place while providing insulation and maintaining a constant dielectric constant for high-frequency stability. --- ### 3. Application Use Cases Because of its high precision and specific frequency tuning, the WJFT5-HA2-R is found in the following environments: 1. **Satellite Terminals:** Connecting an LNB (Low Noise Block) to the feed horn of a satellite dish. 2. **Radar Systems:** Directing high-frequency pulses from the transmitter to the antenna array. 3. **Test & Measurement:** Used in laboratories to connect Waveguide-based equipment to standard Coaxial Spectrum Analyzers. --- ### 4. Part Number Breakdown (Typical) * **WJFT:** Manufacturer Series (often associated with specialized RF hardware). * **5:** Power rating or Size code. * **HA2:** Housing Style/Flange Type (e.g., North American standard vs. European standard). * **R:** Usually denotes "RoHS Compliant" or "Right Angle" configuration.