Abstract: An integrated circuit transceiver device includes a plurality of functional circuits, and clock circuitry for distributing synchronous, in-phase, phase-locked clock signals to all transceiver circuits. The clock circuitry includes a frequency-controllable distributed oscillator including at least one coupled pair of transmission line oscillators having a respective oscillator core, and at least one respective transmission line segment. At least one impedance element couples the at least one respective transmission line segment of a first transmission line oscillator to the at least one respective transmission line segment of a second transmission line oscillator. Impedance of the impedance element is different from impedance of each respective transmission line segment to cause reflection at the at least one impedance element.

Abstract: An integrated circuit transceiver device includes a plurality of functional circuits, and clock circuitry for distributing synchronous, in-phase, phase-locked clock signals to all transceiver circuits. The clock circuitry includes a frequency-controllable distributed oscillator including at least one coupled pair of transmission line oscillators having a respective oscillator core, and at least one respective transmission line segment. At least one impedance element couples the at least one respective transmission line segment of a first transmission line oscillator to the at least one respective transmission line segment of a second transmission line oscillator. Impedance of the impedance element is different from impedance of each respective transmission line segment to cause reflection at the at least one impedance element.

Abstract: The present invention is directed to electrical circuits. and more specially, inductor designs that reduce on-chip electromagnetic coupling in certain applications. In a specific embodiment, the present invention provides an inductor that includes coils that are configured to generate magnetic fields of opposite polarities. The electromagnetic fields generated by the inductor coils substantially cancel out with each other, thereby minimizing parasitic inductance of the inductor and reducing interference with operations of other components in an integrated circuit. There are other embodiments as well.

Abstract: The present invention is directed to electrical circuits. and more specially, inductor designs that reduce on-chip electromagnetic coupling in certain applications. In a specific embodiment, the present invention provides an inductor that includes coils that are configured to generate magnetic fields of opposite polarities. The electromagnetic fields generated by the inductor coils substantially cancel out with each other, thereby minimizing parasitic inductance of the inductor and reducing interference with operations of other components in an integrated circuit. There are other embodiments as well.

Abstract: The present invention is directed to electrical circuits. and more specially, inductor designs that reduce on-chip electromagnetic coupling in certain applications. In a specific embodiment, the present invention provides an inductor that includes coils that are configured to generate magnetic fields of opposite polarities. The electromagnetic fields generated by the inductor coils substantially cancel out with each other, thereby minimizing parasitic inductance of the inductor and reducing interference with operations of other components in an integrated circuit. There are other embodiments as well.

Abstract: A tunable voltage oscillator expands a voltage oscillator's tuning range and compensate for any frequency spread present in the voltage oscillator. The tunable voltage oscillator multiplies a frequency of a periodic signal generated by the voltage oscillator by a fractional number. This fractional number is determined by a desired frequency range and an actual frequency range of the voltage oscillator. As such, the frequency range of the output periodic signal is tuned into the desired range. The voltage oscillator can include a programmable inductor of which the inductance can be adjusted thereby to expand the frequency range by increasing the quality factor in the low frequency range.

Abstract: A low noise amplifier (LNA) system for amplifying a plurality of carriers includes a first amplifier circuit that generates a first radio-frequency (RF) output signal by amplifying a first input RF signal corresponding to a first frequency band, the first amplifier circuit having a first input impedance, and a second amplifier circuit that generates a second RF output signal by amplifying the first input RF signal when the system is in a first multi-output mode, a second input impedance of the second amplifier having a first impedance value when the system is in the first multi-output mode. The LNA system further includes a first impedance controller that maintains the second input impedance of the second amplifier circuit at a second impedance value when the apparatus is in a mode other than the first multi-output mode. The second impedance value is substantially the same as the first impedance value.

Abstract: A voltage-controlled oscillator comprises a tank circuit and first and second pairs of transistors. Each transistor comprises a gate, a drain, and a source. The drains of the first pair are coupled to the tank circuit and the gates of the first pair are cross-coupled with the drains of the first pair. The drains of the second pair are coupled to the tank circuit and the gates of the second pair are cross-coupled with the drains of the second pair. The oscillator includes a first resonant filter comprising a first terminal coupled to the sources of the first pair and a second resonant filter comprising a first terminal coupled to the sources of the second pair. A method includes adjusting capacitance in a resonant filter to cause the resonant filter to resonate based on a selected frequency.