New Auto-Attenuator Controller for WLAN 802.11 b/g Repeater in WAP

A new low-noise, low-insertion-loss and high accuracy automatic-attenuator controller (AAC) to unify a constant power level into WLAN 802.11 b/g repeater is proposed. With the capability of self-detecting the output power of wireless access point, a feature of limiting the power rating to 802.11 b/g repeater is implemented. To serve equalization and prevent overloading for higher throughput, a regulated output power 5 dBm is set over the input power range 8-18 dBm while return loss is less than 3.5 dB at the center frequency 2.45 GHz.