1991

Overview

Adafruit Industries LLC part number 1991 is an RF antenna designed for wireless communication applications. It operates across multiple frequency bands including 850MHz, 900MHz, 1.8GHz, 1.9GHz, and 2.1GHz. The component features a 2dBi gain PCB trace design suitable for compact integration. It utilizes a U.FL (UMCC) or I-PEX MHF1 connector interface for secure attachment to host devices. Adhesive backing facilitates permanent mounting on various surfaces.

Feature Summary

• Multi-band operation supporting GSM frequencies
• Compact PCB trace antenna design
• Integrated adhesive for secure mounting

Applications

• GSM module integration
• Wireless sensor networks
• IoT device prototyping

Procurement Notes

Verify the specific connector type required for your host board, as the product supports both U.FL and I-PEX MHF1 interfaces. Confirm that the operating frequency range of the antenna aligns with your system's transmission requirements. Ensure the adhesive surface is clean and flat for optimal signal performance and mechanical stability during installation.

Selection Notes

Select this antenna when multi-band support across common GSM frequencies is necessary within a limited form factor. The integrated adhesive simplifies assembly compared to screw-mount alternatives. Consider the connector compatibility with your existing RF modules before procurement to ensure physical connectivity without additional adapters.

Part Context

This component belongs to Adafruit Industries LLC's RF antenna portfolio, which provides essential wireless connectivity solutions for open-source hardware projects. The company specializes in accessible electronic components for makers and educators, ensuring each product undergoes rigorous testing prior to release. This antenna complements their ecosystem of development boards and wireless modules.

Replacement Considerations

No public confirmed substitute part numbers are available for this specific model.