Abstract: In one example, a wireless communication device adapted for multi-band operation includes a first antenna, a first diplexer configured to pass signals within first and second sets of frequency bands, first and second signal paths, wherein each signal path includes a set of notch filters tunable to attenuate a different frequency. The wireless communication device includes a second antenna, a second diplexer configured to pass the first and second frequency bands, third and fourth signal paths, wherein each of the third and fourth signal paths includes one or more notch filters tunable to attenuate a different frequency, and a transceiver coupled to each signal path.

Abstract: Wireless networks share UE location information in order to identify possible inter-network aggressors. If a first network determines, based on the location data it receives from a second network, that one of the first network's UEs may cause excessive interference to one or more of the second network's UEs, the first network grants A-MPR to its UE (e.g., by signaling the UE). The first network's UE can then lower its transmit power in order avoid interfering with the second network's UE.

Abstract: A method of pre-stressing the variable capacitor device that experiences a temporary time variant hysteresis effect is provided for electronic circuitry, which may include a mobile communication device. The method includes providing a periodic bias voltage to the variable capacitor such that the variable capacitor is maintained at least at a target stress level such that the capacitance of the variable capacitor when subject to a target bias voltage is predictable due to the time variant hysteresis effect being reduced.

Abstract: A method (600) and devices for enhancing the performance of one or more antennas (440) is provided. A control circuit (104) assesses performance of an antenna (101) in a plurality of bands, such as a receive band and a transmit band. The control circuit (104) can then adjust an adjustable impedance matching circuit (103) coupled to the antenna (101) to improve the efficiency of the antenna (101) in the selected band and can adjust a resonance of the antenna (101) to further improve an efficiency of the antenna (101) in the selected band. Operating parameters for the antenna (101) can be selected from one or more multi-dimensional lookup tables (120) where the parameters are indexed both to a first operating band (702) and a second operating band (703).

Abstract: In one example, a method is performed on an integrated circuit, for generating a composite envelope reference voltage for a plurality of transmit signals. The method includes, generating a composite baseband signal from a plurality of baseband signals, wherein the plurality of baseband signals represent a corresponding plurality of different transmit signals. The method also includes calculating a composite envelope signal for the composite baseband signal, and generating a composite envelope reference voltage from the composite envelope signal for use in powering a single power amplifier as the power amplifier transmits the plurality of different transmit signals.

Abstract: A wireless communication user terminal includes a controller communicably coupled to a transceiver. The controller is configured to tune the transceiver to transmit on a narrowband uplink control channel within a wideband frequency resource. The uplink control channel includes a pair of uplink control channels separated within the wideband frequency resource wherein the pair of uplink control channels are each located within a corresponding PUCCH resource region. The controller is also configured to change a frequency location of at least one of the uplink control channels, within the corresponding PUCCH resource region, away from an edge of the wideband frequency resource.

Abstract: A method of pre-stressing the variable capacitor device that experiences a temporary time variant hysteresis effect is provided for electronic circuitry, which may include a mobile communication device. The method includes providing a periodic bias voltage to the variable capacitor such that the variable capacitor is maintained at least at a target stress level such that the capacitance of the variable capacitor when subject to a target bias voltage is predictable due to the time variant hysteresis effect being reduced.

Abstract: Wireless networks share UE location information in order to identify possible inter-network aggressors. If a first network determines, based on the location data it receives from a second network, that one of the first network's UEs may cause excessive interference to one or more of the second network's UEs, the first network grants A-MPR to its UE (e.g., by signaling the UE). The first network's UE can then lower its transmit power in order avoid interfering with the second network's UE.

Abstract: A method (600) and apparatus (200) cancel odd-order distortion signals. Desensitization can be determined (610) in a received signal caused by odd-order harmonic distortion occurring from at least one transmit signal. A baseband replica harmonic distortion signal can be generated (620) using the transmit signal. The baseband replica harmonic distortion signal can be converted (630) to a low frequency harmonic distortion signal. The low frequency harmonic distortion signal can be subtracted (640) from the received signal to cancel the odd-order distortion from the received signal to create a corrected signal.

Abstract: A method (700) and apparatus (600) optimize resource block based transmitter operation in a wireless communication device. The method can include receiving (720) a radio resource assignment including a particular resource block allocation. The method can include configuring (730) a wireless communication transceiver for the particular resource block allocation. The method can include degrading (740) power amplifier distortion of the wireless communication transceiver based on the particular resource block allocation. The power amplifier distortion can be a measure of a deviation of the power amplifier output in an analysis domain from an ideal linear amplifier.

Abstract: A wireless communication system (400) for power amplification of an input signal includes a power amplifier (404) operable to amplify a data signal (405). An envelope generator 408 or detector is operable to determine an envelope signal (410) from the data signal. A tracking power supply or other power supply control circuit (409) is operable to control a supply voltage of the power amplifier with the envelope signal. An allocation manager (441) is operable to determine a resource block allocation within a channel for the data signal. A delay circuit (443) is operable to insert a delay (550) between the envelope signal and the data signal as a function of the resource block allocation within the channel, thereby intentionally causing unbalanced leakage about the resource block allocation. Increased leakage on one side of the allocation results in improved leakage on the other side.

Abstract: A mobile device that operates in a wireless communication network is disclosed. The mobile device includes a transceiver that uses a first wireless communication technology, which can be Long Term Evolution (LTE) technology. The mobile device also includes a modem that coupled to the transceiver through a standard interface and uses a second wireless communication technology, which can be CDMA. The modem processes the received signal from the transceiver and processes a transmit signal for the transceiver. A first receiver first processing circuit has a matching filter to compensate for and resampling the received signal from the receiver so that that the received signal from the transceiver is compatible with the modem. A transmitter processing has a filter for resampling and adjusting a processed transmit signal for the transmitter.

Abstract: In one example, a method is performed on an integrated circuit, for generating a composite envelope reference voltage for a plurality of transmit signals. The method includes, generating a composite baseband signal from a plurality of baseband signals, wherein the plurality of baseband signals represent a corresponding plurality of different transmit signals. The method also includes calculating a composite envelope signal for the composite baseband signal, and generating a composite envelope reference voltage from the composite envelope signal for use in powering a single power amplifier as the power amplifier transmits the plurality of different transmit signals.

Abstract: A method and system controls a transition between utilizing an envelope tracking (ET) mechanism and using an average power tracking (APT) mechanism to provide power to a power amplifier. A power amplifier controller (PAC) initiates an ET mechanism to track changes in amplitudes of a radio frequency (RF) signal being received by the power amplifier. If the PAC determines that the RF signal bandwidth is low and the average amplitude is at least equal to a threshold value, the PAC maintains the ET mechanism. If the RF signal bandwidth is high and/or the average amplitude of the RF signal is less than the threshold value, the PAC temporarily deactivates the ET mechanism and controls a transition to utilizing the APT mechanism by properly synchronizing the transition to the change in average signal amplitude levels so there are no undesired transients affecting signal quality or spectrum.

Abstract: A method and apparatus provide a wireless communication device multiband tunable radio architecture. The apparatus can include a multiband transceiver configured to transmit and receive wireless communication signals. The apparatus can include a tunable transmit notch filter coupled to the multiband transceiver. The tunable transmit notch filter can provide low insertion loss in a transmit band and attenuation at a receive frequency. The apparatus can include a tunable circulator coupled to the tunable transmit notch filter. The tunable circulator can provide transmit to receive isolation. The apparatus can include a tunable receive filter coupled to the multiband transceiver. The tunable receive filter can provide low insertion loss at a receive frequency and attenuation at other frequencies.

Abstract: In one example, a wireless communication device adapted for multi-band operation includes a first antenna, a first diplexer configured to pass signals within first and second sets of frequency bands, first and second signal paths, wherein each signal path includes a set of notch filters tunable to attenuate a different frequency. The wireless communication device includes a second antenna, a second diplexer configured to pass the first and second frequency bands, third and fourth signal paths, wherein each of the third and fourth signal paths includes one or more notch filters tunable to attenuate a different frequency, and a transceiver coupled to each signal path.

Abstract: A method and apparatus for an adjustable filter system comprises a first integrated circuit generating a reference value that represents a corner frequency of a filter within the first integrated circuit; sending the reference value that represents the corner frequency of the filter across an interface to a second integrated circuit; receiving, across the interface from the second integrated circuit, a filter adjustment value; and changing the corner frequency of the filter using the filter adjustment value to adjust a passband and a stopband of the filter. The apparatus and method also comprises a second integrated circuit detecting a filter adjustment event, wherein the filter adjustment event comprises receipt of the reference value; calculating the filter adjustment value to change a corner frequency of the filter within a first integrated circuit; and sending the filter adjustment value across the interface to the first integrated circuit.

Abstract: A method (600) and apparatus (200) cancel odd-order distortion signals. Desensitization can be determined (610) in a received signal caused by odd-order harmonic distortion occurring from at least one transmit signal. A baseband replica harmonic distortion signal can be generated (620) using the transmit signal. The baseband replica harmonic distortion signal can be converted (630) to a low frequency harmonic distortion signal. The low frequency harmonic distortion signal can be subtracted (640) from the received signal to cancel the odd-order distortion from the received signal to create a corrected signal.

Abstract: A method and apparatus mitigates spurious transmissions. An offset local oscillator signal is generated that is at a frequency that is offset from a nominal transmit channel carrier frequency by a spurious mitigation offset. An information signal is generated that comprises a series of modulation symbols and has a transmission bandwidth at baseband. A configured offset information signal is generated from the information signal, wherein the spectrum of the configured offset information signal is offset from DC by a channel configuration offset, and is further offset by a negative of the spurious mitigation offset. The offset local oscillator signal and the configured offset information signal are combined using a mixing technique. The spurious mitigation offset is zero when a spurious condition does not exist and is non-zero when the spurious condition does exist.

Abstract: A wireless communication system (400) for power amplification of an input signal includes a power amplifier (404) operable to amplify a data signal (405). An envelope generator 408 or detector is operable to determine an envelope signal (410) from the data signal. A tracking power supply or other power supply control circuit (409) is operable to control a supply voltage of the power amplifier with the envelope signal. An allocation manager (441) is operable to determine a resource block allocation within a channel for the data signal. A delay circuit (443) is operable to insert a delay (550) between the envelope signal and the data signal as a function of the resource block allocation within the channel, thereby intentionally causing unbalanced leakage about the resource block allocation. Increased leakage on one side of the allocation results in improved leakage on the other side.