## Summary of the RFbeam K-LC5_V3 Radar Module Datasheet

This document details the specifications and application notes for the RFbeam K-LC5_V3 radar module, a 24GHz radar transceiver. Here's a breakdown of the key information:

Core Functionality:

️· Type: 24GHz Doppler radar module designed for motion detection.
️· Applications: Ideal for proximity sensors, motion detectors, and potentially robotics.

Key Specifications:

️· Frequency: 24.125 GHz
️· Sensitivity: -118 dBc (@ 1kHz IF Bandwidth)
️· IF Output Impedance: 50 Ohms
️· IF Bandwidth: Up to 50 MHz (can be reduced for increased range).
️· Power Supply: 3.3V
️· Dimensions: 25mm x 25mm x 6mm
️· Weight: 4g
️· Antenna Beamwidth: 80° Elevation, 34° Azimuth

Performance & Range:

️· Estimated Range (with 1m² RCS object):
- 15+ meters for a moving person
- 60+ meters for a moving car
️· Range can be improved by reducing IF bandwidth and utilizing advanced signal processing (FFT algorithms).

Key Features & Notes:

️· I/Q Output: Provides both in-phase and quadrature signals for more accurate motion analysis.
️· Low Power Consumption
️· EC Declaration of Conformity: Complies with European RED Directive 2014/53/EU.
️· Sensitivity is highly dependent on object's Radar Cross Section (RCS).
️· VCO Input: An internal voltage source is available on the VCO pin.

Pinout Highlights:

️· VCC: 3.3V Power Supply
️· GND: Ground
️· IF Output I/Q: Outputs the in-phase and quadrature signals
️· VCO In: Input for controlling the oscillator frequency.



In essence, the K-LC5_V3 is a compact, relatively low-power radar module capable of detecting moving objects at ranges up to several meters, with performance heavily dependent on the object’s size and reflectivity.