The **SWC-12EM-R1** is a high-precision microwave/millimeter-wave component known as a **Waveguide-to-Coaxial Adapter**. It is specifically designed to interface between E-Band waveguide systems and coaxial connectors. --- ### 1. Technical Specifications This component is primarily used in telecommunications, radar systems, and laboratory testing. | Feature | Specification | | :--- | :--- | | **Frequency Range** | 60 GHz to 90 GHz (E-Band) | | **Waveguide Size** | WR-12 | | **Connector Type** | 1.0mm (W-Connector) Female | | **Orientation** | Right Angle | | **Insertion Loss** | 1.0 dB (Typical) | | **VSWR** | 1.5:1 (Maximum) | | **Material** | Gold-Plated Brass or Copper | --- ### 2. Electronic & Mechanical Characteristics #### A. The Waveguide Interface (WR-12) The "WR-12" designation refers to the physical dimensions of the waveguide opening. In the E-band (60-90 GHz), the dimensions are extremely small, requiring high-precision machining to prevent signal leakage and impedance mismatch. The flange type is typically a **UG-387/U** circular flange. #### B. The Coaxial Interface (1.0mm) Because the frequencies reach up to 90 GHz, standard connectors (like SMA or 2.92mm) cannot be used due to "moding" (where signals propagate in unwanted patterns). The **1.0mm connector** is specifically engineered to support frequencies up to 110 GHz, maintaining a 50-ohm characteristic impedance. #### C. Signal Transformation Internally, the SWC-12EM-R1 contains a "probe" or "transition element." * **Function:** It converts the **TE10 mode** (Transverse Electric) signals found in the rectangular waveguide into the **TEM mode** (Transverse Electromagnetic) signals used in coaxial cables. * **Right Angle Design:** The "R" in the model number indicates a right-angle transition, meaning the coaxial connector is perpendicular to the waveguide path. --- ### 3. Common Applications * **5G/6G Backhaul:** Testing high-capacity wireless backhaul equipment. * **Automotive Radar:** Development of 77 GHz collision avoidance systems. * **Test & Measurement:** Connecting E-band signal generators or spectrum analyzers to waveguide-based antennas. ---