An antenna tuning circuit is disclosed. The antenna tuning circuit is configured to make multiple estimates on an antenna impedance at an antenna port and determine an optimum tuning state for antenna tuning based on the antenna impedance estimates. The antenna tuning circuit may be further configured according to various embodiments of the present disclosure to minimize impedance estimation error, reduce magnitude and/or phase disturbance during antenna tuning, and extrapolate antenna impedance estimates for both transmit and receive frequencies. As a result, the antenna tuning circuit can accomplish autonomous antenna tuning optimization to thereby improve transmit and receive performance in a wireless communication device.

An antenna tuning circuit is disclosed. The antenna tuning circuit is configured to make multiple estimates on an antenna impedance at an antenna port and determine an optimum tuning state for antenna tuning based on the antenna impedance estimates. The antenna tuning circuit may be further configured according to various embodiments of the present disclosure to minimize impedance estimation error, reduce magnitude and/or phase disturbance during antenna tuning, and extrapolate antenna impedance estimates for both transmit and receive frequencies. As a result, the antenna tuning circuit can accomplish autonomous antenna tuning optimization to thereby improve transmit and receive performance in a wireless communication device.

An antenna apparatus includes at least one antenna provided on a transparent titling surface inside a vehicle, and a partition to surround at least a portion of the at least one antenna. The partition tilts a beam radiated from the at least one antenna receiving a signal including a first frequency band, and transmits or receives a signal including a second frequency band, in the second frequency band different from the first frequency band.

An antenna apparatus includes at least one antenna provided on a transparent titling surface inside a vehicle, and a partition to surround at least a portion of the at least one antenna. The partition tilts a beam radiated from the at least one antenna receiving a signal including a first frequency band, and transmits or receives a signal including a second frequency band, in the second frequency band different from the first frequency band.

An apparatus, including: an antenna interface, comprising: a first transformer including a first transmission line coupled to a second transmission line, wherein the first transmission line includes first and second ends configured to couple to a first communication device and a reference potential electrode, respectively, and wherein the second transmission line includes first and second ends configured to couple to an antenna and a second communication device, respectively; and a second transformer including a third transmission line coupled to a fourth transmission line, wherein the third transmission line includes first and second ends configured to couple to the first communication device and the reference potential electrode, respectively, and wherein the fourth transmission line includes first and second ends configured to couple to the second communication device and a ballast load, respectively.

An apparatus, including: an antenna interface, comprising: a first transformer including a first transmission line coupled to a second transmission line, wherein the first transmission line includes first and second ends configured to couple to a first communication device and a reference potential electrode, respectively, and wherein the second transmission line includes first and second ends configured to couple to an antenna and a second communication device, respectively; and a second transformer including a third transmission line coupled to a fourth transmission line, wherein the third transmission line includes first and second ends configured to couple to the first communication device and the reference potential electrode, respectively, and wherein the fourth transmission line includes first and second ends configured to couple to the second communication device and a ballast load, respectively.

A wireless device includes at least one slim radiating system having a slim radiating structure and a radio-frequency system. The slim radiating structure includes one or more booster bars. The booster bar has slim width and height factors that facilitate its integration within the wireless device and the excitation of a resonant mode in the ground plane layer, and has a location factor that enables it to achieve the most favorable radio-frequency performance for the available space to allocate the booster bar. The at least one slim radiating system may be configured to transmit and receive electromagnetic wave signals in one or more frequency regions of the electromagnetic spectrum.

A wireless device includes at least one slim radiating system having a slim radiating structure and a radio-frequency system. The slim radiating structure includes one or more booster bars. The booster bar has slim width and height factors that facilitate its integration within the wireless device and the excitation of a resonant mode in the ground plane layer, and has a location factor that enables it to achieve the most favorable radio-frequency performance for the available space to allocate the booster bar. The at least one slim radiating system may be configured to transmit and receive electromagnetic wave signals in one or more frequency regions of the electromagnetic spectrum.

A mobile device having array antenna can be used to communicate with Earth orbiting satellites and base stations on the ground. The display screen of the mobile device has an array antenna capable of transmitting and receiving radio frequency (RF) signals in the range of 0.6 GigaHertz (GHz) to 100 GHz. The configuration of the array antenna, including the number of arrays and the dimension of the arrays, is software programmable by activating and deactivating antenna elements for multiple beams and their beam characteristics.

A mobile device having array antenna can be used to communicate with Earth orbiting satellites and base stations on the ground. The display screen of the mobile device has an array antenna capable of transmitting and receiving radio frequency (RF) signals in the range of 0.6 GigaHertz (GHz) to 100 GHz. The configuration of the array antenna, including the number of arrays and the dimension of the arrays, is software programmable by activating and deactivating antenna elements for multiple beams and their beam characteristics.