Abstract:
An amplifier stage (300) for generating an amplified output signal from an input signal, a mobile device comprising an audio amplifier, and an amplification method for generating an amplified output signal from an input signal using an amplifier stage (300) are described.
Abstract:
A method for driving a ground reference to a signal path (25), a control circuit (20) for driving a ground reference on a signal path (25), and a mobile device (1) are described.
Abstract:
The present invention relates to a antenna unit (500, 600) and a portable device ( 10) comprising such a television antenna unit. The television antenna unit (500, 600) has at least one antenna element (510B, 510C) forming a television antenna (600) arranged in a cable adapted for detachable connecting an auxiliary device (500) to the portable device (10). This provides a television antenna displaying good properties over the frequency range in question without requiring any additional circuitry or signal processing for the device ( 10) and without requiring or occupying any space within the device (10).
Abstract:
Electronic devices and wireless communication terminals include a unitary circuit board on which a radio -frequency (RF) antenna and a microphone are attached. The RF antenna includes a radiating plane and a ground plane. A feed line on the circuit board is connected to the radiating plane, and a ground line on the circuit board is connected to the ground plane. The microphone and the RF antenna are spaced apart on the circuit board by a distance of less than a half wavelength of a resonant frequency of the radiating plane. The microphone generates a microphone signal through a pair of microphone lines on the circuit board.