Patent application number | Description | Published |
20100279744 | SYSTEMS AND METHODS FOR MANAGING POWER CONSUMPTION OF A TRANSCEIVER - Systems and methods for managing power consumption of a transceiver, e.g., Bluetooth, are provided. A representative transceiver includes an antenna that receives analog radio frequency (RF) signals, and a RF analog circuitry that receives and processes the analog RF signals from the antenna. An analog-to-digital converter (ADC) receives and converts the processed analog RF signals to digital RF signals. A digital circuitry includes a RF power detector that receives the digital RF signals and determines a RF power of the analog RF signals from the antenna based on the digital RF signals. A computing device instructs the RF analog circuitry to operate in low current drain RF receiver mode during page scanning and/or inquiry scanning. The computing device is designed to receive the RF power of the received analog RF signals and manages the power consumption of the transceiver based on the RF power. | 11-04-2010 |
20110205114 | SYSTEMS AND METHODS FOR DETECTING MULTIPLE GNSS SIGNALS - A representative radio frequency (RF) receiver comprises an RF section that receives RF signals. Such RF signals include more than one global navigation satellite system (GNSS) signals, which include at least one of the following: global positioning system (GPS) signals, Galileo signals and Glonass signals. A mixer and converter section receives the RF signals from the RF section and includes a band stop filter and a harmonic reject mixer that facilitate detecting more than one GNSS signals from the RF signals. An intermediate frequency section amplifies and selects the detected more than one GNSS signals. | 08-25-2011 |
20110275341 | IP2 CALIBRATION MEASUREMENT AND SIGNAL GENERATION - A radio frequency receiver on an integrated circuit (RFIC) includes an oscillator circuit, which generates a radio frequency (RF) oscillatory signal having a predetermined frequency that is outside of an intermediate frequency passband of the RFIC. An amplitude modulator modulates the RF oscillatory signal to produce an amplitude modulated signal which is applied to a mixer that downconverts the amplitude modulated signal. A calibration circuit receives the downconverted signal, including second order modulation (IM2) products, and, responsive to the IM2 products, generates a bias signal that is applied to the mixer to reduce the IM2 products. | 11-10-2011 |
20120243640 | RECEIVER - A receiver including: an antenna for receiving signals in a plurality of frequency ranges; a plurality of amplifiers, each of the plurality of amplifiers being configured to amplify signals in one of the plurality of frequency ranges; a plurality of receive paths, each of the plurality of receive paths connecting an output of the antenna to an input of one of the plurality of amplifiers, wherein each of the plurality of receive paths includes a power detector for monitoring signal power in the receive path and a switch which can be operated to activate or deactivate the receive path, wherein the switch of each receive path is operable to deactivate the receive path if an overload condition is detected by the power detector of that receive path. | 09-27-2012 |
20140369452 | METHOD AND APPARATUS FOR ON-DEMAND INTERFERENCE REJECTION IN MULTI-BAND GNSS RECEIVERS - In general, the present invention relates to an adaptive IF filter for a multiband receiver. According to certain aspects, the adaptive IF filter can be dynamically configured as a low-pass architecture or a complex band-pass architecture. According to further aspects, the adaptive IF filter enables a wideband receiver which can simultaneously receive multiple frequency bands, but still protect itself from close-in or in-band jammers by selecting a single frequency band or subset of frequency bands. This retains the multiband functionality of the receiver under nominal conditions, which is traded off dynamically for a single-frequency-band with high jammer resistance under severe jamming conditions. According to still further aspects, the approach of the invention is particularly useful for GNSS receivers, since unlike a cellular transceiver, a temporary loss of signal is not catastrophic to GNSS receivers due to the long integration times. | 12-18-2014 |