| Patent Number |
Title Of Patent |
Date Issued |
| 7372925 |
Wireless LAN receiver with I and Q RF and baseband AGC loops and DC offset cancellation |
May 13, 2008 |
| A wireless local area network receiver having separate automatic gain control (AGC) loops for providing a radio frequency AGC and a baseband frequency AGC, as well as a DC offset cancellation circuit. The AGC loops control a low noise amplifier amplifying the received RF signal, and the |
| 7286015 |
Linear-in-dB variable gain amplifiers with an adaptive bias current |
October 23, 2007 |
| Linear-in-dB current-steering VGAs with an adaptive bias current operable so that as the gain of the amplifier decreases, the DC current consumption also decreases. The modified VGA circuits result in power consumption savings, which are of particular value in wireless (battery power |
| 7271622 |
Quadrature voltage controlled oscillators with phase shift detector |
September 18, 2007 |
| In wireless application there is made use of a quadrature oscillators that generate signals that are capable of oscillating at quadrature of each other. The quadrature oscillator is comprised of two differential modified Colpitts oscillators. A capacitor bank allows for the selection |
| 7268627 |
Pre-matching of distributed and push-pull power transistors |
September 11, 2007 |
| Pre-matching of distributed push-pull and power transistors enabling the effective use of high-power and high-frequency transistor arrays. In accordance with the invention, a pre-matching element is connected between stages of multi-transistor arrays. The pre-matching element serves |
| 7253712 |
Integrated high frequency balanced-to-unbalanced transformers |
August 7, 2007 |
| Integrated high frequency balanced-to-unbalanced transformers suitable for operation in high frequencies, such as radio frequencies. Embodiments disclosed give consideration to issues related to the layout of the primary and secondary inductors for the minimization of capacitive effe |
| 7155185 |
Apparatus and methods for eliminating DC offset in a wireless communication device |
December 26, 2006 |
| Apparatus and methods for eliminating DC offset in a wireless communication device operable on a continuous basis or on a sampled basis. In a receive channel, the output of a forward variable gain amplifier is fed back to an RC circuit to charge the capacitor (C) to a voltage depende |
| 7049875 |
One-pin automatic tuning of MOSFET resistors |
May 23, 2006 |
| Methods and apparatus for automatic tuning of MOSFET resistors providing accuracy and linearity throughout process and temperature variations. In accordance with the methods, the source and drain of a MOSFET device are biased in a balanced manner around a common mode voltage using a circ |
| 7010330 |
Power dissipation reduction in wireless transceivers |
March 7, 2006 |
| Methods and circuits for reducing power dissipation in wireless transceivers and other electronic circuits and systems. Embodiments of the present invention use bias current reduction, impedance scaling, and gain changes either separately or in combination to reduce power dissipation |
