W3921B0100

Antennas RF Overview

The W3921B0100 is a 2.4GHz flat patch RF antenna manufactured by Pulse Electronics, designed for Bluetooth, Wi-Fi, and Zigbee applications. It operates within a frequency range of 2.4GHz to 2.5GHz with a center frequency of 2.45GHz. The antenna features a gain of 1dBi and an impedance of 50 Ohms. It has a maximum power rating of 2W and a VSWR of 2. The component includes a 100mm RF1.13 cable terminating in a U.FL (UMCC) or I-PEX MHF1 connector. It utilizes adhesive mounting and measures 33mm in length, 7.7mm in width, and 0.4mm in height.

Antennas RF Feature Summary

• Flat patch design with integrated adhesive mounting for secure installation
• Integrated 100mm RF1.13 cable with U.FL compatible connector
• Optimized for 2.4GHz ISM band wireless protocols

Antennas RF Applications

• Bluetooth and BLE devices
• Wi-Fi and WLAN modules
• Zigbee and 802.15.4 networks
• Set top boxes
• Security systems

Antennas RF Procurement Notes

Verify the specific connector type required, as the part supports both U.FL and I-PEX MHF1 interfaces. Confirm that the adhesive mounting method aligns with the target device's enclosure material and surface requirements. Ensure the operating temperature range of -40°C to +85°C meets the environmental conditions of the final application. Check RoHS3 compliance status if restricted substances are a concern for the project.

Antennas RF Selection Notes

Select this antenna when a low-profile internal solution is needed for 2.4GHz wireless connectivity. The fixed 100mm cable length requires careful routing planning within the device chassis. Consider the 1dBi gain sufficient for standard range applications but verify coverage needs against higher gain alternatives. The adhesive mount eliminates the need for mechanical fasteners, simplifying assembly processes compared to screw-mounted options.

Antennas RF Part Context

This component belongs to Pulse Electronics' FLEXible Internal FPC Antenna series. It serves as an internal replacement for external whip antennas in compact consumer electronics. The design integrates the radiating element directly onto a flexible substrate, allowing it to conform to tight spaces inside handheld devices and IoT sensors while maintaining reliable RF performance.

Antennas RF Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.