Persico, US
Alfredo Persico, North Las Vegas, NV US
Charles Persico, Rancho Santa Fe, CA US
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20090111419 | DIRECT CONVERSION WITH VARIABLE AMPLITUDE LO SIGNALS - Techniques to reduce LO leakage by controlling the amplitude of LO signal based on the level of output signal after the frequency conversion process. An LO generator receives a VCO signal and generates an LO signal having a variable amplitude and a frequency that is related to the frequency of the VCO signal. A variable gain amplifier receives a control signal and adjusts the amplitude of the LO signal based on the control signal. The variable amplitude LO signal is used for frequency upconversion (e.g., direction upconversion) of an input signal (e.g., at baseband) to obtain an output signal (e.g., at RF). The relationship between LO signal amplitude and output signal level may be defined by a particular transfer function. In general, the LO signal is set higher for higher output signal level and is reduced proportionally for lower output signal level. | 04-30-2009 |
Charles J. Persico, San Diego, CA US
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20080232611 | METHOD AND APPARATUS FOR MITIGATING PHASE NOISE - Techniques for mitigating additional phase noise in local oscillator (LO) signals, which may be due to digital noise coupling, are described. A correction signal having an estimate of additional phase noise in an LO signal is derived. The correction signal is applied to a data signal either after downconversion or before upconversion with the LO signal to mitigate the additional phase noise. To derive the correction signal, an input signal having the additional phase noise may be obtained by downconverting a replica LO signal or based on the replica LO signal without downconversion. The input signal may be digitized and filtered to pass a single tone and suppress remaining tones. A replica signal may be derived based on the filtered signal and frequency translated to obtain a phase noise estimate signal at DC. The complex conjugate of the phase noise estimate signal may be provided as the correction signal. | 09-25-2008 |
20110299510 | ANTENNA SHARING FOR RADIO FREQUENCY SIGNALS IN SAME FREQUENCY BANDS - A wireless device for receiving composite signals is disclosed. The wireless device includes an antenna. The wireless device also includes a first amplifier coupled to the antenna. The wireless device further includes a second amplifier coupled to the antenna. The wireless device also includes a first receiver. The wireless device further includes a second receiver. The wireless device also includes a first switch that couples the first receiver to the output of either the first amplifier or the second amplifier. The wireless device further includes a second switch that couples the second receiver to the output of either the first amplifier or the second amplifier. | 12-08-2011 |
20120302188 | TUNABLE MULTI-BAND RECEIVER - A tunable multi-band receiver supporting operation on a plurality of frequency bands is disclosed. In an exemplary design, the tunable multi-band receiver includes an antenna tuning network, a tunable notch filter, and at least one low noise amplifier (LNA). The antenna tuning network tunes an antenna (e.g., a diversity antenna) to a receive band in a plurality of receive bands. The tunable notch filter is tunable to a transmit band in a plurality of transmit bands and attenuates signal components in the transmit band. One LNA among the at least one LNA amplifies an output signal from the tunable notch filter. The tunable multi-band receiver may further include one or more additional tunable notch filters to further attenuate the signal components in the transmit band. | 11-29-2012 |
20140179251 | Apparatus and method of harmonic selection for mixing with a received signal - A method of harmonic selection for mixing with a received signal includes receiving a radio frequency (RF) signal and determining a variable gain setting from among a plurality of gain settings or from a range of gain settings. The variable gain setting is based on the RF signal. The method further includes selecting a harmonic to provide to an input of a mixer to generate an output signal. A baseband signal or an intermediate frequency signal is generated from the output signal. The harmonic is selected based on the variable gain setting. An apparatus includes a harmonic selector that is configured to generate an indication of a selected harmonic. The harmonic is selected based on a variable gain setting determined from among a plurality of gain settings or from a range of gain settings. Based on the selected harmonic, a mixer generates an output signal. A baseband signal or an intermediate signal is generated from the output signal. | 06-26-2014 |
Charles J. Persico, Rancho Santa Fe, CA US
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20080247306 | COMPANDED TRANSMIT PATH FOR WIRLESS COMMUNICATION - This disclosure describes companded transmit path techniques that may be implemented in a wireless communication device to reduce power consumption and possibly simplify signal modulation. In accordance with this disclosure, in phase (I) and quadrature phase (Q) components of a transmit waveform are compressed at baseband, and an emphasis envelope is generated to represent this compression. The compressed I and Q components are then converted to analog signals and processed. This analog processing may include the mixing process in which the compressed I and Q signals are modulated onto a carrier waveform. The emphasis envelope signal is then used to expand the modulated waveform. | 10-09-2008 |
20080273552 | METHODS AND APPARATUSES FOR MULTIMODE BLUETOOTH AND WLAN OPERATION CONCURRENTLY - A wideband telecommunications device with narrow band support. The device may be a receiver having a wireless interface configured to receive combined first and second signals, the first signal having data in a first frequency band and the second signal having data in a second frequency band wider than the first frequency band, wherein the first frequency band is within the second frequency band. The receiver may also be a processing system configured to recover the data in the first signal from the combined first and second signals. The device may be a transmitter having a first signal source configured to provide a first signal having data in a first frequency band; a second signal source having a second frequency band, the first frequency band being within a sub-band of the second frequency band, wherein the second signal source is configured to provide a second signal having data in the second frequency band with no data in the sub-band of the second frequency band, a processing system configured to combine the first and second signals, and a wireless interface configured to transmit the combined first and second signal. | 11-06-2008 |
Charles James Persico, San Diego, CA US
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20150257022 | Enhancing Data Throughput Using Multiple Receivers - An apparatus includes a first low noise amplifier (LNA) in a first receive path. The apparatus further includes receive circuitry in the first receive path. The receive circuitry is configured to receive an output of the first LNA and to receive an output of a second LNA within a second receive path. | 09-10-2015 |
Charles James Persico, Rancho Santa Fe, CA US
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20110070896 | GPS POSITION TRACKING METHOD WITH VARIABLE UPDATING RATE FOR POWER CONSERVATION - A system and method in which the position update rate is adaptively modified, based on previous position measurements. By adjusting the update rate based on velocity predictions from two or more position fixes, a lower update rate may be used without exceeding the maximum error. Lowering the update rate reduces power consumption in the UE, providing longer battery operation. The updating method may comprise periodically repeating the velocity prediction and periodically adjusting the update rate responsive thereto. The update rate may be adjusted using additional information such as an acceleration prediction, a minimum update rate, or a preferred error. In some embodiments a model for user movement may be used to provide more accurate predictions, for example, stationary, walking, jogging, city driving, and freeway driving. The updating method may comprise receiving user input regarding the maximum position error. | 03-24-2011 |
Patricia A. Persico, North Las Vegas, NV US
Paul Joseph Persico, Macungie, PA US
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20110308275 | METHOD AND SYSTEM FOR PERIODIC COOLING, STORING, AND HEATING OF ATMOSPHERIC GAS - Disclosed is a method and a system. The method and system involve compressing an atmospheric gas stream to form a supercritical atmospheric gas stream, forming at least a first stream from the supercritical atmospheric gas stream, directing the first stream to a regenerator for cooling to form a first cooled stream, directing the first cooled stream from the regenerator, expanding the first cooled stream to form a liquefied atmospheric gas stream, storing at least a portion of the liquefied atmospheric gas stream, pressurizing at least a portion of the stored portion of the liquefied atmospheric gas stream, and heating at least a portion of a pressurized liquefied atmospheric gas stream in the regenerator. In the method and system, refrigeration below the critical temperature of the atmospheric gas is directly or indirectly provided to at least one portion of the system from a non-combustible source. | 12-22-2011 |
Saverio Persico, Canyon County, CA US
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20100209533 | CHEMICAL COMPOSITION FOR USE AS A DISINFECTANT - A chemical composition is disclosed for a disinfectant, which is particularly usefully for disinfecting toothbrushes and other oral and/or dental products. One or more chemical compositions may be applied to an object, such as the bristles of a toothbrush with a portable spray container. | 08-19-2010 |