An aspect of the present invention is to address at least the above-mentioned problems
and/or disadvantages and to pro vide at least the advantages described below. Accordingly …

(57) ABSTRACT A single chip GSM/EDGE transceiver comprises a fully dif ferential receive
chain, a Subharmonic mixer in the receive chain, the Subharmonic mixer configured to …

Methods and apparatus for controlling events, timing and operational characteristics of
wireless communications devices are disclosed. An exemplary wireless communica tions …

A transmission module is provided that includes a transmitter, a loopback receiver, and a
QEC controller. The QEC controller identifies quadrature imbalance in the transmitter based …

In one embodiment, the present invention includes a capacitor array that may provide a
selected capacitance to a digitally controlled crystal oscillator (DCXO). The array may …

(57) ABSTRACT A limiter for minimizing an amount of phase change caused by input
amplitude variation includes a variable gain ampli fier configured to receive a signal having …

As the field of wireless communications continues to develop at a rapid pace, the resulting
increased number of systems and frequency bands in use continues to complicate the …

An adaptive frequency controller, a phase-locked loop including the same and an adaptive
frequency controlling method are provided. In an adaptive frequency controller, a frequency …

An integrated circuit device having a select circuit, a summing circuit and a phase mixer. The
select circuit selects one of a plurality of offset values as a selected offset. The summing …

The present invention provides a system for reducing self interference in a mobile terminal.
In general, the system includes a receiver including downconversion circuitry that converts a …