摘要:
A mobile wireless communications device (10) includes a wireless local area network (WLAN) radio (14) configured to generate a WLAN transmit signal, and a Bluetooth radio (16) configured to generate a Bluetooth transmit signal. A circulator (24) is coupled downstream of an antenna (25). A transmit path couples the WLAN radio and the Bluetooth radio to the circulator such that the WLAN radio and the Bluetooth radio are capable of transmitting simultaneously. In addition, a receive path also couples the WLAN radio and the Bluetooth radio to the circulator such that the WLAN radio and the Bluetooth radio are capable of receiving simultaneously.
摘要:
A mobile wireless communications device (30) may include a portable housing (31), and an antenna (32) carried by the portable housing (31). The mobile wireless communications device (30) may further include wireless communications circuitry (33) carried by the portable housing (31) and an adjustable impedance matching network (37) coupled between the wireless communications circuitry (33) and the antenna (32). An audio input transducer (34) and an audio output transducer (44) may be carried by the portable housing (31). The mobile wireless communications device (30) may further include a controller (45) carried by the portable housing (31) and configured to determine (74) an acoustic coupling between the audio input transducer (34) and the audio output transducer (44). The controller (45) may further be configured to adjust (82) the adjustable impedance matching network (37) based upon the determined acoustic coupling.
摘要:
A communications device (500"') may include an In-phase (I) circuit having an In-phase modulator and mixer circuit (503"'-506a"'), and an I power amplifier (512a"') circuit coupled thereto, the I circuit configured to modulate and amplify a digital baseband I signal (601a"'-601b"') to generate an amplified I signal, and a Quadrature (Q) circuit having a Q modulator and mixer circuit (503"'-506b"'), and a Q power amplifier circuit (512b"') coupled thereto, the Q circuit configured to modulate and amplify a digital baseband Q signal (601c"'-601d"') to generate an amplified Q signal separate from the amplified I signal. The communications device may include a processor (530"') configured to compare the digital baseband I and Q signals with the demodulated I and Q signals to compensate for errors, selectively phase shift at least one of the digital baseband I and Q signals, and control at least one of the I and Q power amplifier circuits to vary an amplitude of at least one of the amplified I and Q signals.
摘要:
A communications device, in one aspect as a portable wireless communications device, includes an in-phase modulator and power amplifier that receives a baseband I signal and modulates and amplifies the I signal. A quadrature modulator and power amplifier receives a baseband Q signal and modulates and amplifies the Q signal. A power combiner sums and outputs the I and Q signals. An I demodulator circuit receives a signal fed back from the I power amplifier and demodulates the fed back signal to produce demodulated I signals. A Q demodulator circuit receives a signal fed back from the Q power amplifier and demodulates the fed back signal to produce demodulated Q signals. A processor compares the digital, baseband I and Q signals with a demodulated I and Q signals to compensate for amplitude, frequency and phase modulation errors.
摘要翻译:一种通信设备,在作为便携式无线通信设备中的一个方面,包括在相调制器和功率放大器确实接收基带I信号并调制和放大该I信号。 正交调制器和功率放大器接收基带Q信号并调制和放大该Q信号。 功率组合求和,并输出I和Q信号。 I解调器电路接收从I功率放大器反馈的信号并解调该反馈信号以产生解调的I信号。 A Q解调器电路接收从Q功率放大器反馈的信号并解调该反馈信号以产生解调的Q信号。 处理器比较数字基带I和Q信号与解调的I和Q信号,以补偿幅度,频率和相位调制误差。
摘要:
A power distribution network includes multiple charge storage components and multiple charging circuits to control the charging and discharging of the charge storage components, which may comprise a battery and a supercapacitor. By appropriate arrangement and selection of the storage components, ripple in the power supply voltage, whose propagation to other components relying on the power distribution network may cause an audible buzz, may be significantly reduced. Additionally, appropriate arrangement and selection of the storage components, electromagnetic interference may also be significantly reduced.
摘要:
A mobile communication device has a power amplifier and a power pack. The power pack includes a charge storage component, a first pair of taps connected to the charge storage component for supplying power to components of the mobile communication device and a second pair of taps connected to the charge storage component for supplying power to the power amplifier, the second pair of taps located, when the power is installed in the mobile communication device, more proximate to the power amplifier than the first pair of taps. With the second pair of taps positioned more proximate to the power amplifier, the power amplifier current loop that includes the multi-tap power pack may be made smaller. One benefit of a smaller power amplifier current loop may be reduced emission of RF interference signals.
摘要:
A battery (900) comprising: a folded element (901) including: an anode layer; and a cathode layer; and a casing (908) containing the folded element; wherein the folded element (901) comprises the anode layer and the cathode layer being folded to bring a first site in the anode layer proximate to a second site in the anode layer, and to bring a first site in the cathode layer proximate to a second site in the cathode layer. The battery further comprising an anode wire connected to the anode layer; and a cathode wire connected to the cathode layer; wherein the anode wire is positioned relative to the cathode wire so that an anode wire magnetic field generated by current in the anode wire and a cathode wire magnetic field generated by current in the cathode wire have similar magnitude and opposite polarity. The total magnetic field generated by the battery is reduced in magnitude.