Application Design Center - Wireless LAN Access Point

Circuit Protection of WLAN Antenna

Solutions

• PGB1010603

Design Notes:

Protection Application:

The communication signals carried by the antenna operate at different radio frequency, depending on WLAN protocol – 2,400 MHz for 802.11b/g/n, 5,000 MHz for 802.11a; and are less than 1.0 Vp-p in magnitude. Due to the high frequency nature of these signals, the capacitance of the suppressor must be taken into account to avoid signal attenuation. The electrical threat will be ESD.

Solution Description:

As shown at the left, a single PulseGuard suppressor is used to protect the antenna element.

Companion Solutions:

Does not apply.

Regulatory Issues:

The IEC 61000-4-2 will be the most appropriate standard that applies for this circuit. It supplies a test method for verifying that the end product is not susceptible to ESD events.

Unique Features:

Does not apply.

Application Warnings:

Does not apply.