ST0543-00-403-U

Antennas RF Overview

The ST0543-00-403-U is a ceramic patch antenna manufactured by Amphenol RF, designed for embedded Global Navigation Satellite System (GNSS) and GPS applications. It operates at a center frequency of 1.575 GHz with a narrow bandwidth ranging from 1.574 GHz to 1.576 GHz. The component provides a gain of -0.5 dBi and maintains a return loss of -10 dB. It utilizes an I-PEX MHF1 interface for connection.

Antennas RF Feature Summary

• Surface-mount ceramic patch design suitable for compact IoT devices
• Optimized for GNSS and GPS satellite navigation signal reception
• Integrated I-PEX MHF1 connector interface for PCB integration

Antennas RF Applications

• IoT device positioning modules
• GPS tracking hardware
• Embedded satellite navigation systems

Antennas RF Procurement Notes

Verify the specific I-PEX MHF1 mating connector compatibility during procurement. Confirm that the surface-mount footprint matches the target PCB layout. Ensure the operating temperature range aligns with the final product environment. Check for any required ground plane specifications to maintain the stated -0.5 dBi gain performance.

Antennas RF Selection Notes

Select this model when a low-profile ceramic patch antenna is required for GNSS applications. The -0.5 dBi gain indicates it is suited for general-purpose positioning rather than high-sensitivity long-range tracking. Consider the I-PEX MHF1 interface requirement against available board space and connector availability.

Antennas RF Part Context

This component belongs to the Amphenol RF internal embedded chip antenna series. It is part of a family including models like ST0543-00-404-U and ST0543-00-406-U, which offer variations in frequency bands or active amplification features for different GNSS requirements.

Antennas RF Replacement Considerations

ST0543-00-404-U offers alternative band coverage. ST0543-00-406-U is an active variant providing higher sensitivity. Verify interface and gain requirements before substituting.