### Overview of the PE9933-72-R The **PE9933-72-R** is a specialized electronic component, primarily known as a high-performance **RF (Radio Frequency) Cable Assembly**. It is manufactured by **Pasternack**, a leading supplier in the RF and Microwave industry. --- ### Technical Specifications The component is designed for high-frequency signal transmission where low loss and phase stability are critical. Below are the primary technical characteristics: | Feature | Specification Details | | :--- | :--- | | **Connector A** | SMA Male (Straight) | | **Connector B** | SMA Male (Straight) | | **Cable Type** | PE-P160LL (Low Loss) | | **Impedance** | 50 Ohms | | **Frequency Range** | DC to 18 GHz | | **Length** | 72 Inches (approx. 182.88 cm) | | **Jacket Material** | FEP (Fluorinated Ethylene Propylene) | --- ### Electronic Properties The "electronic parts" of this assembly function together to maintain signal integrity across a wide bandwidth: 1. **Center Conductor**: Typically made of silver-plated copper (solid) to provide maximum conductivity and minimize the "skin effect" at high frequencies. 2. **Dielectric (Insulator)**: Uses expanded PTFE (Polytetrafluoroethylene). This material has a low dielectric constant, which reduces signal attenuation (loss) and allows the signal to travel closer to the speed of light. 3. **Shielding Layer**: Utilizes a double-shielding technique (often a silver-plated copper braid over a foil). This provides high **RF Shielding Effectiveness** (typically > 90 dB), preventing electromagnetic interference (EMI) from leaking out or entering the cable. 4. **Connectors**: The SMA (SubMiniature version A) connectors are precision-machined with gold-plated contacts to ensure low Contact Resistance and high durability over multiple mating cycles. --- ### Key Performance Metrics * **Low Insertion Loss**: Designed to ensure that the power entering one end of the cable reaches the other end with minimal heat dissipation. * **VSWR (Voltage Standing Wave Ratio)**: Typically rated around **1.35:1** up to 18 GHz, indicating excellent impedance matching and minimal signal reflection. * **Velocity of Propagation**: Usually around **82-83%**, meaning the signal travels significantly faster than in standard RG-type coaxial cables. --- ### Common Applications Due to its high-frequency rating (18 GHz) and low-loss nature, the PE9933-72-R is used in: * **Test and Measurement**: Connecting lab equipment like Spectrum Analyzers and Network Analyzers. * **Aerospace & Defense**: High-reliability communication links. * **Wireless Infrastructure**: Testing 5G and LTE base station components.