5.8GHz 24GHz Antenna Sensor Dual Sided PCB for Automotive Communication

Precision-engineered for high-frequency RF applications with integrated antenna sensors for simplified design and reduced assembly costs.

• Number of layers: 2
• Board size: 2.2×2.2cm
• Panel size: 30×18cm
• Color: Green solder mask with black silk screen
• Craft edge: Yes
• Surface finish: Immersion gold
• Material: Rogers 4350 0.254mm
• Gerber file required

Civilian Doppler microwave sensors operate in C-band (5.8GHz), X-band (10.525/10.687GHz) and K-band (24.125GHz) with transmit power less than 10mW. These frequencies are in the ISM band and don't require special licensing.

Microwave sensors consist of a microwave oscillator and antenna. The oscillator generates microwave signals which are transmitted via waveguide and emitted through specially designed antennas. The system detects changes in reflected microwave power to determine object presence and movement.

The capacitive sensor system functions similarly to a plate capacitor, where the base capacitance is determined by the sensor pad and ground plane configuration. Key factors affecting performance include:

• PCB dielectric properties (εr)
• Distance between sensor layers (d)
• Sensor pad area (A)

• Dual-Band Operation: Supports both 5.8GHz (ISM band) and 24GHz (K-band) frequencies
• Optimized RF Performance: Minimized signal loss for stable microwave operation
• Integrated Antennas: On-board design eliminates external components
• Robust Construction: Available in FR4 or specialized high-frequency laminates
• Compact Design: 2.2×2.2cm form factor ideal for space-constrained applications

• Motion detection and proximity sensors
• Radar and speed detection systems
• Smart home security devices
• Automotive radar prototypes
• Industrial automation sensors
• Drone navigation systems
• Wireless communication modules