An apparatus comprising: first radio frequency receiver circuitry configured for operation at least in one or more first radio frequency bands; at least a first antenna arrangement configured for operation in the one or more first radio frequency bands; at least a second antenna arrangement configured for operation in one or more second radio frequency bands; a frequency down-converter for converting a frequency of a signal received via the second antenna arrangement, in one or more second radio frequency bands, to the one or more first radio frequency bands; a radio frequency path to the first radio frequency receiver circuitry that is configured for transferring the signal received via the second antenna arrangement after down-conversion to the one or more first radio frequency bands and for transferring a signal received via the first antenna arrangement in the one or more first radio frequency bands.

A base station system may include at least one base station radio, at least one antenna, the at least one antenna including at least a first antenna comprising a linear array of antenna elements arranged in a vertical plane, and at least a one antenna distribution network for distributing radio frequency (RF) signals as component RF signals across the linear array of antenna elements of the at least the first antenna to form at least one beam in an elevation plane. In one example, the at least the one antenna feed network applies amplitude and phase weights to the component RF signals, wherein the amplitude and phase weights are selected to minimize RF coupling between the at least the first antenna and passive intermodulation sources in a near-field of the at least the first antenna.

An information handling system (IHS) includes a sensor for sensing a physical configuration of the IHS, the physical configuration dependent upon a position of a hinge of a housing of the IIS. A first proximity sensor probe may sense whether a first biological entity element is proximate to a first antenna of the IHS, and a second proximity sensor probe may sense whether a second biological entity element is proximate to a second antenna of the IHS. The IHS may reconfigure use of at least one of the first antenna and the second antenna in response to the sensing of at least one of the first proximity sensor probe and the second proximity sensor probe.

A multi-band radio frequency (RF) front-end circuit is provided. The multi-band RF front-circuit includes multiple RF circuits configured to amplify RF signals received and/or to be transmitted in multiple RF bands and/or polarizations via an antenna circuit. The antenna circuit includes multiple antenna tap points each coupled to a respective one of the RF circuits. Since each of the RF circuits has a respective impedance that can vary based on the RF bands, the antenna tap points are so positioned on the antenna circuit to each present a respective drive impedance that matches the respective impedance of a coupled RF circuit. Further, the antenna tap points are also positioned on the antenna circuit to cause desired RF isolations between the RF bands and/or the polarizations. Consequently, the multi-band RF front-end circuit can achieve optimal RF performance across a wide range of RF bands with reduced footprint and insertion losses.

In an electronic device and an operation method of the electronic device according to various embodiments, a communication circuit of the electronic device may comprise: a first transmission chain which outputs a first transmission signal through a first antenna; a second transmission chain which outputs a second transmission signal through a second antenna; a first amplifier which is electrically connected to the first transmission chain, and amplifies the first transmission signal output from the first transmission chain; and a second amplifier which is electrically connected to the second transmission chain, and amplifies the second transmission signal output from the second transmission chain, where the second amplifier is configured to have an output end connected to an output end of the first amplifier through a transmission line, and output the second transmission signal received from the second transmission chain to the first antenna through the transmission line. Various other embodiments may be possible.

A high-frequency front end module includes a primary antenna terminal and a secondary antenna terminal, a first multiplexer and a second multiplexer, a switch circuit, and a first amplifier and a second amplifier. The first multiplexer has a first transmission filter and a first reception filter. The second multiplexer has a second transmission filter and a second reception filter. The switch circuit exclusively switches connection between the primary antenna terminal and the first multiplexer and connection between the primary antenna terminal and the second multiplexer, and exclusively switches connection between the secondary antenna terminal and the first multiplexer and connection between the secondary antenna terminal and the second multiplexer.

Disclosed is a radio frequency circuit, a method of transmitting and receiving radio frequency signals, and a wireless communication device. The radio frequency circuit includes a first radio frequency amplifier, a second radio frequency amplifier, a first channel switch, a first low noise amplifier, a second low noise amplifier, and a second channel switch; the first radio frequency amplifier and the second radio frequency amplifier are connected with a plurality of antennas through the first channel switch, respectively, and are connected with a plurality of SRS antennas through an SRS switch in the first channel switch; the first low noise amplifier and the second low noise amplifier are connected with the plurality of antennas through the first channel switch, respectively, and are connected with a receiver through the second channel switch, respectively; wherein, the first radio frequency amplifier or the second radio frequency amplifier transmits one channel of radio frequency transmission signals to realize one-channel transmission, and the first low noise amplifier and the second low noise amplifier simultaneously receive radio frequency reception signals to realize two-channel reception.

Reprogrammable antenna arrays for frequency adjustment are provided. In certain embodiments, a mobile device includes a front-end system including a plurality of radio frequency signal conditioning circuits, an antenna array including a plurality of selectable antenna elements, and a control circuit configured to provide a frequency adjustment to the antenna array by selecting a combination of the plurality of selectable antenna elements to connect to the plurality of radio frequency signal conditioning circuits.

Systems and methods for operating a radio system include configuring a first antenna of a plurality of antennas in a wireless device to operate in a configured mode of a plurality of modes, wherein the plurality of modes include a first mode of operating as a quarter wave for operation in a 2.4 GHz band, a second mode of operating as a half wave for operation in a 5 GHz band, and a third mode of operating simultaneous as a half wave and a quarter wave for operation in both the 2.4 GHz band and the 5 GHz band; and operating a first radio of a plurality of radios connected to the first antenna in the configured mode of the first antenna.

A radio frequency module includes: a first antenna connection terminal; a second antenna connection terminal different from the first antenna connection terminal; a first filter having a passband of a first frequency range including a first communication band allocated as a TDD communication band; a second filter having a passband of a second frequency range including a second communication band allocated as a TDD communication band; and a third filter having a passband of a third frequency range including a third communication band allocated as a TDD communication band. The third frequency range is located between the first frequency range and the second frequency range. The first and second filters are both connected to one of the first antenna connection terminal and the second antenna connection terminal. The third filter is connected to the other of the first antenna connection terminal and the second antenna connection terminal.