摘要:
A receiver has a channel scan mode of operation and a communication mode of operation. In the channel mode of operation, the passband of a filter is narrowed relative to the passband of the filter in the communication mode. According to another aspect of the circuit, a local oscillator is selectively phase locked to an internal clock during channel scanning and locked to the incoming signal during a communication mode operation.
摘要:
A method, apparatus, and electronic device with mitigated lossy antenna resonance are disclosed. A transceiver chassis may connect to a wireless network. A slider chassis may move relative to the transceiver chassis between an open position and a closed position. A first temporary grounding connection between the slider chassis and the transceiver chassis may connect in a closed position. A second temporary grounding connection between the slider chassis and the transceiver chassis of the slider phone may connect in the open position.
摘要:
A method and system configures operating parameters associated with an operation of a connected accessory or second device in order to mitigate harmonic interference within an operating frequency band of a wireless communication device (WCD). In response to a connection between the WCD and the second device via a physical communications interface, Accessory Authentication and Configuration (AAC) logic of the WCD receives device identifying information about the second device. The AAC logic determines candidate values for each operating parameter, based on the device identifying information. The AAC logic dynamically selects a particular candidate value for each operating parameter, based on a current operating frequency band of the WCD, and an expected level of harmonic interference. The AAC logic automatically configures each operating parameter with the corresponding selected candidate value to enable proper operation of the second device while mitigating harmonic interference within the operating frequency band of the WCD.
摘要:
A method and system configures operating parameters associated with an operation of a connected accessory or second device in order to mitigate harmonic interference within an operating frequency band of a wireless communication device (WCD). In response to a connection between the WCD and the second device via a physical communications interface, Accessory Authentication and Configuration (AAC) logic of the WCD receives device identifying information about the second device. The AAC logic determines candidate values for each operating parameter, based on the device identifying information. The AAC logic dynamically selects a particular candidate value for each operating parameter, based on a current operating frequency band of the WCD, and an expected level of harmonic interference. The AAC logic automatically configures each operating parameter with the corresponding selected candidate value to enable proper operation of the second device while mitigating harmonic interference within the operating frequency band of the WCD.
摘要:
A method, apparatus, and electronic device with mitigated lossy antenna resonance are disclosed. A transceiver chassis may connect to a wireless network. A slider chassis may move relative to the transceiver chassis between an open position and a closed position. A first temporary grounding connection between the slider chassis and the transceiver chassis may connect in a closed position. A second temporary grounding connection between the slider chassis and the transceiver chassis of the slider phone may connect in the open position.
摘要:
A portable device, such as a handheld device (10), laptop device or other suitable portable device, employs an antenna beam selection structure that is coupled to a plurality of built-in antennas (12 and 14) of the portable device that have different beam angles with respect to each other. The plurality of built-in antennas are coupled to a satellite network positioning signal processing circuit (18) so that device positioning signals from a satellite network can be received and processed by the device. The plurality of built in antennas may be stationary or movable with respect to each other. A control circuit (20) is operative to control switching between each of the plurality of built in antennas based on detected signal strength, signal quality measurements, the number of positioning satellites detected by a satellite network positioning signal processing circuit or other suitable criteria.
摘要:
A mobile wireless communication device (10) having a direct conversion receiver (20) reduces spurious mixer response by predicting blockers on the received RF signal. The chopping frequency of the mixer is changed (305) dynamically in response to the prediction of blockers on the input signal to avoid the mixing the blocker with chopper spurs, thereby improving the response of the receiver. In some embodiments, the mixer is disabled momentarily (402) to verify that poor signal quality results from mixing chopper spurs with blockers. In hopping mode applications, the chopper frequency is changed only on channels having a low confidence factor (512).