The disclosure relates to an apparatus for connecting modules included in an electronic device, and the apparatus may comprise: a power source between a first module of an electronic device and a second module of the electronic device; at least one line unit including lines for transferring a control signal, an intermediate (IF) signal, or a radio frequency (RF) signal; a first connector unit for connecting at least one of the lines to the first module; a second connector unit for connecting at least one of the lines to the second module; and a connection unit for connecting at least one external apparatus and at least one line for transferring the IF signal or the RF signal from among the lines.

A method of increasing reliability of a wireless radio includes: creating a first waveform at a first center frequency of an encoded data stream using a first wireless radio; creating a second waveform at a second center frequency of the encoded data stream using the first wireless radio; combining the first waveform and the second waveform into a composite waveform with redundant data streams at different center frequencies using the first wireless radio; wirelessly transmitting the composite waveform using the first wireless radio; wirelessly receiving the composite waveform; filtering the received composite waveform using a first filter band; digitizing the received composite waveform using the second wireless radio; demodulating the digitized composite waveform into a first data stream and a second data stream with the second wireless radio; and creating a third data stream representative of the encoded data stream.

Embodiments of the present disclosure provide a clipping method and an apparatus. The clipping apparatus is a base station, and the base station includes a baseband unit (BBU) and a remote radio unit (RRU). The BBU includes a first processor, and the RRU includes a second processor. The first processor is configured to: perform clipping after combining N input carriers, and output N carriers obtained after a first level of clipping; and the second processor is configured to: perform clipping after combining the N carriers obtained after the first level of clipping, and output N carriers obtained after a second level of clipping, where N is an integer greater than or equal to 2. The base station separately performs clipping at the BBU and the RRU, so that the base station can flexibly select, a baseband processing board or a baseband chip to deploy the first level of clipping.

A transmitter includes a plurality of transmitter circuits configured to generate signals that are within the same frequency band; and a feedback circuit that is shared by the plurality of transmitter circuits, the feedback circuit being configured to feed back a part of a transmission amplification signal to a transmitter circuit, the transmission amplification signal being output from each of the plurality of transmitter circuits through a transmission amplifier, and the transmitter circuit being configured to output the transmission amplification signal among the plurality of transmitter circuits. The feedback circuit includes a frequency selective extraction unit configured to extract different-band signals in frequency bands from the transmission amplification signal, the frequency bands being different from each other, a synthesis unit configured to synthesize the different-band signals extracted by the frequency selective extraction unit, and to generate a synthesis signal, a frequency conversion unit configured to frequency-convert the synthesis signal generated by the synthesis unit by using a local signal of the same frequency, the local signal being common to a plurality of transmission paths, and a distortion compensation coefficient calculation unit configured to calculate a distortion compensation coefficient based on signals of frequency bands of the different-band signals, the distortion compensation coefficient being used when compensating for distortion of signals in outputs of the plurality of transmitter circuits.

A power amplifier includes an amplifying circuit, a feedback circuit and a grounding capacitor. The amplifier circuit includes at least a first transistor and a second transistor. A control terminal of the first transistor is configured to receive an input signal, a first terminal of the second transistor is coupled to the first transistor, and a second terminal of the second transistor is configured to generate an output signal. The feedback circuit is coupled to the control terminal of the first transistor and the second terminal of the second transistor. The ground capacitor is configured to couple the control terminal of the second transistor to ground. When a frequency of the input signal is between a first band and a second band, an amplification gain of the output signal relative to the input signal is substantially the same.

A system and method of improving data link performance between two or more wireless data transceivers includes: clipping and inverting the data components of a communication signal which are calculated to cause non-linear saturation effects in the downstream power amplifier; delaying a first time series to align the first time series with the clipped and inverted data components of a second time series; adding the clipped and inverted data components of the second time series to the delayed first time series to obtain a modified composite waveform; creating a sacrificial band containing principal energy of the clipped and inverted data components of the second time series; harvesting the principal energy of the sacrificial band to obtain an optimized composite waveform; and amplifying the optimized composite waveform with the downstream power amplifier of one or more of the two or more wireless data transceivers.

A method of creating a dynamically sharp location based filter includes: placing a moving object containing two or more antennas used for direction finding of a radiation source within a anechoic testing chamber; moving one or more radio transmitters within the anechoic chamber relative to a future spatial location, angle, and/or position of the moving object over a defined time; record an expected angle of arrival of one or more signals of the one or more radio transmitters with respect to the future spatial location, angle, and/or position of the moving object over the defined time; and program a filter within the moving object based on the recorded expected angle of arrival of the one or more signals.

Certain aspects of the present disclosure generally relate to a circuit for signal processing. The circuit generally includes a first transformer having a first inductive element magnetically coupled with a second inductive element, and a second transformer having a third inductive element magnetically coupled with a fourth inductive element. In certain aspects, the first inductive element may be coupled in series with the third inductive element. In certain aspects, the circuit also includes a capacitive element coupled in parallel with the fourth inductive element, the capacitive element and the fourth inductive element forming a notch circuit, the notch circuit coupled in series with the second inductive element.

A system and method of improving data link performance between two or more wireless data transceivers includes: clipping and inverting the data components of a communication signal which are calculated to cause non-linear saturation effects in the downstream power amplifier; delaying a first time series to align the first time series with the clipped and inverted data components of a second time series; adding the clipped and inverted data components of the second time series to the delayed first time series to obtain a modified composite waveform; creating a sacrificial band containing principal energy of the clipped and inverted data components of the second time series; combining the sacrificial band to the modified composite waveform in non-overlapping signal space to obtain an optimized composite waveform; and amplifying the optimized composite waveform with the downstream power amplifier of one or more of the two or more wireless data transceivers.

Provided is a power control method of a transmitter. The method may include: generating a first aggregated carrier signal by aggregating multiple carrier signals; determining whether at least one peak exceeding a preset threshold is detected among the peaks of the first aggregated carrier signal; generating, if at least one peak exceeding the preset threshold is detected, at least one cancellation signal based on the detected at least one peak; and mapping the at least one cancellation signal to reserved subcarriers. It is possible to reduce the PAPR at the side of an amplifier by applying a tone reservation technique to multicarrier signals.