Mediatek Singapore Pte. Ltd.

Mediatek Corporation

Chih-Chun Tang

Siu-Chuang Ivan Lu

Chi-Yao Yu

Yen-Horng Chen

George Chien

Lan-Chou Cho

Po-Sen Tseng

Shin-Fu Chen

Shou-Tsung Wang

Bing-Jye Kuo

Lan-Chuo Cho

One exemplary receiver for a wireless communication system includes signal processing components arranged to generate a receiver output according to a radio frequency (RF) signal. The signal processing components include amplifiers having a class-AB biased amplifier included therein. The signal processing components are disposed in a chip, and the class-AB biased amplifier is an amplifier which processes a signal corresponding to the RF signal before any other amplifier included in the chip. The class-AB biased amplifier has a first amplifier block, a bias circuit and a second amplifier block. The first amplifier block is arranged to receive an input at the input port and generating a first output. The bias circuit is arranged to bias the first amplifier block for a class-AB operation. The second amplifier block is arranged to generate an output at the output port according to the first output.

Receiver for wireless communication system

A wireless communication receiver includes a first signal processing circuit, a second signal processing circuit, and a detecting circuit. The first signal processing circuit generates a first processed signal by processing a received radio frequency (RF) signal. The second signal processing circuit is coupled to the first signal processing circuit. The detecting circuit monitors a specific signal of the first signal processing circuit and generates at least a control signal to the second signal processing circuit in response to a signal level of the monitored specific signal. The control signal controls the second signal processing circuit to switch from a first operation mode to a second operation mode.

Wireless communication receiver having one signal processing circuit whose operation mode is adjusted by monitoring signal level of specific signal of preceding signal processing circuit and related wireless communication method

An interference-robust receiver includes an RF signal processor, a frequency conversion interface and an analog signal processor. The RF signal processor provides an RF signal. The frequency conversion interface includes a passive mixer for generating an intermediate frequency signal by down-converting an in-band part of the RF signal to a passband of a filter and down-converting an out-of-band part of the RF signal to a stopband of the filter. The filter can thus filter the intermediate frequency signal with the passband and the stopband.

Interference-robust receiver for a wireless communication system

An input/output device comprises a bonding pad, a signal transport circuit, and a blocking unit. The signal transport circuit has a first terminal connected to the bonding pad and a second terminal connected to a core circuit of an IC product. The signal transport circuit is capable of transporting a signal either from the bonding pad to the core circuit or from the core circuit to the bonding pad. The blocking unit has a control terminal and is coupled between the bonding pad and the signal transport circuit. The control terminal is coupled to receive an enable signal. The blocking unit ties the bonding pad to a predetermined voltage level when the enable signal is de-asserted, thereby blocking the signal transport provided by the signal transport circuit. The blocking unit unties the bonding pad from the predetermined voltage level when the enable signal is asserted.

Input/output device capable of blocking external interference signals

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Taipei, Taiwan

Chih-Chun Tang