10PCS TX2400-FPC-4405 2.4GHz Slim FPC Antenna | 2.5 dBi Gain | 44x4.5mm Profile Compact and Lightweight

Slim 44mm ¡Á 4.5mm Profile for Narrow Spaces

The TX2400-FPC-4405 features an elongated 44mm ¡Á 4.5mm slim profile, making it ideal for installation in narrow spaces where wider antennas cannot fit. The 4.5mm width is specifically designed for compact wireless network cards, USB WiFi adapters, M.2 modules, and slim IoT devices. Despite the narrow form factor, the antenna delivers enhanced 2.5 dBi gain through optimized meandered trace design along the 44mm length. The flexible polyimide substrate maintains 0.15mm thickness and 1g weight while enabling conformal mounting along device edges or curved surfaces. The 3M adhesive backing ensures secure attachment in plastic enclosures without requiring screws.

IPEX-I Connector for Universal WiFi and Bluetooth Compatibility

Features standard IPEX-I (U.FL) connector with 100mm low-loss coaxial cable, providing plug-and-play compatibility with ESP32, ESP8266, nRF52, CC2652, and other 2.4GHz wireless modules. The IPEX-I connector maintains insertion loss below 0.3 dB and is rated for 30+ mating cycles, ensuring reliable performance for WiFi (802.11b/g/n/ax), Bluetooth (BLE 4.0/5.0), ZigBee, and Thread applications. The 50¦¸ coaxial cable maintains impedance matching and signal integrity across the entire 2.4GHz ISM band, supporting all WiFi channels and Bluetooth frequency hopping.

Verified using professional RF test equipment at 2400-2500 MHz: VSWR measured consistently ¡Ü 2.0 across the entire 2.4GHz ISM band, ensuring acceptable impedance matching for WiFi and Bluetooth applications. Peak gain of 2.5 dBi achieved with omnidirectional horizontal coverage, providing approximately 1.8x range improvement compared to 0 dBi reference antennas.

The elongated 44mm length optimizes gain performance while maintaining the slim 4.5mm width for narrow-space installations. Return loss (S11) better than -9.5 dB throughout the operational bandwidth, confirming adequate power transfer to 50¦¸ systems. Antenna efficiency exceeds 70% when properly mounted with recommended ground plane clearance.

(Complete VSWR / S11 / radiation pattern / efficiency measurements available upon request)

Q: What makes the 44¡Á4.5mm slim profile advantageous?

A: The slim 4.5mm width enables installation in narrow spaces where wider antennas cannot fit, such as USB WiFi adapters, M.2 wireless cards, and compact IoT devices with limited PCB width. The elongated 44mm length optimizes gain performance (2.5 dBi) through meandered trace design while maintaining the narrow profile. This form factor is ideal for devices requiring edge-mounted antennas or installation along narrow PCB sections. The slim design also enables conformal mounting along device edges or curved surfaces without protruding into the main device volume.

Q: Is this antenna compatible with WiFi and Bluetooth simultaneously?

A: Yes, the TX2400-FPC-4405 operates across the entire 2.4GHz ISM band (2400-2500 MHz) with VSWR ¡Ü2.0, making it fully compatible with WiFi (802.11b/g/n/ax), Bluetooth (Classic and BLE 4.0/5.0/5.1/5.2/5.3), ZigBee (IEEE 802.15.4), and Thread protocols. The 50¦¸ impedance and IPEX-I connector ensure compatibility with dual-mode WiFi+Bluetooth modules from ESP32, nRF52, CC2652, and similar platforms. For devices with separate WiFi and Bluetooth radios, you may need two antennas or a diplexer to share a single antenna between both radios.

Q: How do I install this slim FPC antenna for optimal performance?

A: For optimal performance, mount the antenna along the edge of your PCB or device enclosure, positioned on or near a ground plane (minimum 50mm ¡Á 10mm recommended for the elongated shape). Keep the antenna away from metal components, batteries, and LCD displays (10mm clearance). Clean the mounting surface with isopropyl alcohol, peel the 3M adhesive backing, and press firmly along the entire 44mm length. Connect the IPEX-I connector to your module's antenna port. The slim profile allows installation in narrow spaces, but ensure the 44mm length has adequate clearance for optimal radiation pattern. Verify performance using your module's signal strength indicators after installation.

Q: What is the expected WiFi range with this antenna?

A: WiFi range depends on transmit power, receiver sensitivity, environmental conditions, and antenna placement. With typical WiFi transmit power (15-20 dBm) and proper installation, expect 35-90 meters indoor range and 120-220 meters outdoor line-of-sight. The 2.5 dBi gain provides approximately 1.8x range improvement compared to 0 dBi reference antennas. For USB WiFi adapters and wireless network cards, the slim profile enables optimal antenna positioning along the device edge, maximizing performance despite the compact form factor. Internal antenna placement typically reduces range by 20-30% compared to external antennas, but the enhanced 2.5 dBi gain helps compensate for this loss.