Abstract: A CMOS hybrid analog-digital receiver core where filtering and gain functions are implemented in the digital domain. The analog portion of the receiver core includes standard circuits such as a low noise amplifier for receiving an RF input signal, and a mixer circuit for down-converting the RF input signal to a base band frequency signal. The analog to digital conversion function is provided by a merged ADC filter circuit having a low order filter stage and an ADC stage. The low order filter stage performs low order filtering of the base band signal to reduce dynamic range and clock requirements for subsequent analog to digital conversion the ADC stage. The two circuit stages are considered to be merged since they both consist of an interconnection of identical transconductance cells, where each transconductance cell includes a series of interconnected CMOS inverters.

Abstract: Methods and apparatus for reducing the amount of leakage in a transmitter are disclosed. In one embodiment, a wireless transmitter is comprises: a divider providing a local oscillation (LO) signal, a plurality of mixers that receive the LO signal and receive a signal to be modulated, a summer coupled to the plurality of mixers, and a plurality of amplifiers serially coupled to the summer. The divider couples to a capacitor, a resistor, and a power supply and the resistor and the capacitor form a pole that attenuates the LO signal present on the power supply.

Abstract: In an RF receiver apparatus (31) that is provided physically separately from a cooperating baseband processor apparatus (32), the frequency plan options of the RF receiver apparatus can be enhanced by integrating into the RF receiver apparatus a suitably designed digital-IF-to baseband converter.

Abstract: A method of producing a bulky continuous filament yarn which includes the steps of feeding primary and secondary continuous multi-filament polymeric yarns into a treatment zone within an air nozzle device, with one of the yarns being pre-treated by the application of water so that said one yarn is wet when fed into the treatment zone. The yarns in the treatment zone are subjected to a turbulent fluid flow which causes the individual filaments of the yarns to separate, and also causes ring-like loops to be formed at randomly spaced intervals along the individual filaments of the secondary yarn. The filaments of the yarns become intermingled within the treatment zone and are withdrawn and collected in the form of a single yarn. The primary yarn is fed into the treatment zone at a rate between 4 and 26% greater than the rate at which the intermingled filaments are withdrawn from the treatment zone, and the secondary yarn is fed into the treatment zone at a rate which is at least 2.

Abstract: A method of producing a bulky continuous filament yarn which includes the steps of feeding primary and secondary continuous multi-filament polymeric yarns into a treatment zone, with one of the yarns being pre-treated by the application of water so that said one yarn is wet when fed into the treatment zone. The yarns in the treatment zone are subjected to a turbulent fluid flow which causes the individual filaments of the yarns to separate, and also causes ringlike loops to be formed at randomly spaced intervals along the individual filaments of the secondary yarn. The filaments of the yarns become intermingled within the treatment zone and are withdrawn and collected in the form of a single yarn. The primary yarn is fed into the treatment zone at a rate between 4% and 26% greater than the rate at which the intermingled filaments are withdrawn from the treatment zone, and the secondary yarn is fed into the treatment zone at a rate which is at least 2.