Abstract: A method and device for optimizing an operating point of a power amplifier (40) in a WCDMA mobile terminal (10) is provided. The method includes the steps of receiving a first signal; determining a TFCI value from the first signal; determining a status of a compressed mode of the mobile terminal (10); determining a required power output level of the mobile terminal (10); reading an operating point value from a memory in response to the three determined values; and supplying the operating point value to the power amplifier (40). The operating point value is indicative of a bias current. The device includes a processor (41) for determining a TFCI value, a compressed mode status, and a required power output level from a control signal; a state machine (42) for retrieving from a memory an operating point value of a power amplifier (40) in response to the three values; and the power amplifier (40) for amplifying a transmission signal.

Abstract: A method and apparatus for detecting the presence of a wireless local area network (WLAN) (104) detects at least one energy fluctuation in a radio frequency (RF) signal propagating in a WLAN frequency band and indicates the presence of a WLAN (104) in response to the detection of the at least one energy fluctuation.

Abstract: The present invention relates to a self-adaptive band-pass filtering device in a microwave signal transmitter and/or receiver, the receiver being connected to a microwave signal receiving antenna (1) connected to the input of a low-noise amplifier (2), a mixer (4) that receives, on the one hand, the output signal of the low-noise amplifier (2) and, on the other hand, the signal from a frequency synthesizer (5), characterized in that the self-adaptive filtering device (3) comprises, upstream of the amplifier (2), on the one hand, at least one filtering means (300, 31, 32) having at least two different frequency bands and, on the other hand, means (8, 33, 34) for selecting either a filtering means (31, 32) or one of the frequency bands depending on the frequency of the signal to be received.