The **ACT-576MHZ-R-F** is a surface-mount, high-frequency **Surface Acoustic Wave (SAW) Resonator**. These components are critical for frequency stabilization in wireless communication devices, typically used in remote controls, security systems, and data transmitters. --- ### 1. Key Technical Specifications The following table outlines the core electronic characteristics of the ACT-576MHZ-R-F: | Parameter | Value / Specification | | :--- | :--- | | **Center Frequency** | 576.00 MHz | | **Tolerance** | ±75 kHz (Typical) | | **Insertion Loss** | ≤ 2.0 dB | | **Operating Temperature** | -40°C to +85°C | | **Package Type** | SMD (Surface Mount Device) | | **Package Size** | Usually 3.0 x 3.0 mm or 5.0 x 5.0 mm | | **Load Capacitance** | ~10 pF (Typical) | --- ### 2. Internal Electronic Structure The part functions based on the **piezoelectric effect**. It consists of a quartz or ceramic substrate with metallic "interdigital transducers" (IDT) deposited on the surface. 1. **Input/Output:** When an electrical signal is applied, the IDTs convert it into a mechanical surface wave. 2. **Resonance:** The wave travels across the surface and is reflected back by "gratings," creating a standing wave at exactly **576 MHz**. 3. **Filtering/Timing:** This precise physical resonance acts as a highly stable electronic clock or filter for the RF circuit. --- ### 3. Application Circuitry In a typical RF transmitter circuit, this part is used in the **Oscillator Stage**. Below is a conceptual representation of how it is integrated: ```cpp // Logic Representation of Oscillator Usage If (Input_Voltage == Stable) { Resonator_Output = 576_MHz_Sine_Wave; Power_Amplifier(Resonator_Output); Antenna_Transmit(Signal); } ``` --- ### 4. Common Use Cases * **SRD (Short Range Devices):** Garage door openers and keyless entry systems. * **RF Modulators:** Converting baseband signals to high-frequency carriers. * **Security Sensors:** Wireless PIR (Passive Infrared) or door/window contacts.