Abstract: Presented herein are systems, methods, and apparatus for ultra-low power, low noise switched capacitor radio frequency mixer. In one embodiment, there is described a method for mixing a signal. The method comprises mixing with a mixer, a received signal with a mixing signal to generate a mixed signal. The mixing signal comprises an in-phase component and an out-of-phase component and a desired frequency. The mixed signal comprises a mixed in-phase component and a mixed out-of-phase component. The method also comprises mixing one of the mixed in-phase component and the mixed out-of-phase component based on the mixing signal.

Abstract: Presented herein are systems, methods, and apparatus for ultra-low power, low noise switched capacitor radio frequency mixer. In one embodiment, there is described a method for mixing a signal. The method comprises mixing with a mixer, a received signal with a mixing signal to generate a mixed signal. The mixing signal comprises an in-phase component and an out-of-phase component and a desired frequency. The mixed signal comprises a mixed in-phase component and a mixed out-of-phase component. The method also comprises mixing one of the mixed in-phase component and the mixed out-of-phase component based on the mixing signal.

Abstract: A mixer such as an I/Q mixer, having an amplifier having first and second inputs and an output. The first input corresponding to, for example, an I input, and the second input corresponding to, for example, a Q input. The mixer also including a multiple way (M-way) switch having a single input in communication with the output of the amplifier; a frequency control input; and at least four outputs. The frequency control input is configured to receive a periodic signal, and the M-way switch is configured to switch a signal received on the single input to each of the at least four outputs at a switching frequency that is determined by the periodic signal. The M-way switch is operable to switch the input signal received on the single input to each of the at least four outputs in a serial fashion.

Abstract: A method and apparatus for providing a dual-loop phase lock loop (PLL) for a radio-frequency (RF) receiver is provided. The dual-loop PLL may include coarse tuning circuitry and fine tuning circuitry. The coarse turning circuitry and fine tuning circuitry may be arranged in parallel. Both of the coarse tuning circuitry and fine tuning circuitry provide respective tuning signals to a voltage-controlled oscillator (e.g., a varactor tuned VCO). The coarse tuning circuitry and the fine tuning circuitry may provide the respective tuning signals simultaneously. In addition, coarse and fine tuning circuitry may be formed monolithically with other elements of the dual-loop PLL so as to provide a highly-integratable having a wide frequency lock range and high sensitivity.

Abstract: A wireless receiver receives satellite signals from a plurality of different satellite systems comprising GPS, GLONASS, and GALILEO. A single analog RF front-end is used to process the received satellite signals. The single analog RF front-end uses a single fix-valued analog frequency generated internally for simultaneously receiving the satellite signals comprising signals from a GPS frequency band, a GLONASS frequency band, and/or a GALILEO frequency band. The received satellite signals are separated into single frequency band signals within the GPS frequency band, the GLONASS frequency band, and/or the GALILEO band. Particular satellite channels associated with the single frequency band signals are determined based on corresponding satellite channel frequencies and satellite channel codes.

Abstract: A method and apparatus for providing a dual-loop phase lock loop (PLL) for a radio-frequency (RF) receiver is provided. The dual-loop PLL may include coarse tuning circuitry and fine tuning circuitry. The coarse turning circuitry and fine tuning circuitry may be arranged in parallel. Both of the coarse tuning circuitry and fine tuning circuitry provide respective tuning signals to a voltage-controlled oscillator (e.g., a varactor tuned VCO). The coarse tuning circuitry and the fine tuning circuitry may provide the respective tuning signals simultaneously. In addition, coarse and fine tuning circuitry may be formed monolithically with other elements of the dual-loop PLL so as to provide a highly-integratable having a wide frequency lock range and high sensitivity.

Abstract: A mixer such as an I/Q mixer, having an amplifier having first and second inputs and an output. The first input corresponding to, for example, an I input, and the second input corresponding to, for example, a Q input. The mixer also including a multiple way (M-way) switch having a single input in communication with the output of the amplifier; a frequency control input; and at least four outputs. The frequency control input is configured to receive a periodic signal, and the M-way switch is configured to switch a signal received on the single input to each of the at least four outputs at a switching frequency that is determined by the periodic signal. The M-way switch is operable to switch the input signal received on the single input to each of the at least four outputs in a serial fashion.