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The speed to market is critical to the success of any RFIC company. With more and more wireless standards proposed and adopted, the design cycles are actually getting shorter. It puts a lot of pressure on the RFIC team to come up with the design faster. In the digital...
The automatic gain control (AGC) circuit is a critical building block in modern wireless transceivers. It is used in both the transmitter (TX) and receiver (RX). In the TX, the AGC is used to regulate the output power level. For example, a well-known issue in a CDMA system is...
The oscillator is a critical part of modern wireless communication systems. It is the local oscillator that is used to up-convert the baseband signal to the desired RF frequency in the transmitter. Vice versa, the local oscillator is used to down-convert the desired signal in the receiver. In the...
The direct conversion (homodyne) transceiver architecture is gaining popularity. It allows more flexibility in a multi-band and multi-mode complex receiver system. It is a low cost solution, compared with the traditional heterodyne receiver, because the entire IF stage signal processing is eliminated. However, the problem of DC offset, poor...
