A low profile phased array antenna that is configured to be manufactured using additive manufacturing techniques is provided. In one or more embodiments, the phased array can include a plurality of signal ears, ground ears, and clustered pillars that can be arranged in relation to a base plate such that each component of the antenna can be manufactured from a single piece of material, thereby allowing for the use of additive manufacturing techniques which can substantially reduce the cost and time of the manufacturing process. The phased array can include a signal ear that include one or more posts that interface with an airgap located within a base plate of the array, wherein the size of the airgap in relation to the size of the post is configured to achieve an optimal level of impedance matching.

Acoustic impedance tuning in a wireless transmission circuit (a.k.a. wireless device) is provided. In aspects discussed herein, the wireless transmission circuit includes an acoustic load-line tuning circuit that can be configured to adapt a load-line impedance presenting to a power amplifier circuit. In embodiments disclosed herein, the acoustic load-line tuning circuit can be dynamically controlled to provide impedance matching between a power amplifier circuit and other load-line circuits (e.g., filter circuits, antenna switch circuits, and/or antenna circuits). As a result, it is possible to reduce a signal reflection resulting from an impedance mismatch between the power amplifier circuit and the load-line circuits, thus helping to improve performance of the wireless transmission circuit.

Acoustic impedance tuning in a wireless transmission circuit (a.k.a. wireless device) is provided. In aspects discussed herein, the wireless transmission circuit includes an acoustic load-line tuning circuit that can be configured to adapt a load-line impedance presenting to a power amplifier circuit. In embodiments disclosed herein, the acoustic load-line tuning circuit can be dynamically controlled to provide impedance matching between a power amplifier circuit and other load-line circuits (e.g., filter circuits, antenna switch circuits, and/or antenna circuits). As a result, it is possible to reduce a signal reflection resulting from an impedance mismatch between the power amplifier circuit and the load-line circuits, thus helping to improve performance of the wireless transmission circuit.

A signal processing circuit reduces die size and power consumption for each antenna element. The signal processing circuit includes a first set of ports, a third port, a first path, a second path and a first transistor. The first path is between a first port of the first set of ports and the third port. The second path is between a second port of the first set of ports and the third port. The first transistor is coupled between the first path and the second path. The first transistor is configured to receive a control signal to control the first transistor to adjust an impedance between the first path and the second path.

A signal processing circuit reduces die size and power consumption for each antenna element. The signal processing circuit includes a first set of ports, a third port, a first path, a second path and a first transistor. The first path is between a first port of the first set of ports and the third port. The second path is between a second port of the first set of ports and the third port. The first transistor is coupled between the first path and the second path. The first transistor is configured to receive a control signal to control the first transistor to adjust an impedance between the first path and the second path.

A transmit/receive switching circuit implementation reduces transmitting/receiving switching losses in a transceiver during different modes of operation. The implementation includes connecting a low noise amplifier and a power amplifier in accordance with a shunt configuration in the transceiver. The implementation also includes disabling the power amplifier to achieve a high impedance state by grounding an output stage bias and enabling the low noise amplifier and disabling one or more transistors connected to a path between the low noise amplifier and the power amplifier during a receive mode.

A low-frequency antenna module includes two switching units, a first matching circuit, a second matching circuit, and a low-frequency antenna. Each of the two switching units includes an electrical connection point, a first switching point, and a second switching point. The first matching circuit is electrically connected to the two first switching points, the second matching circuit is electrically connected to the two second switching points, and the low-frequency antenna is electrically connected to one of the two electrical connection points. The two switching units are synchronously operated to electrically connect the two electrical connection points to the two first switching points or to the two second switching points. Thus, the low-frequency antenna can be applied to match the first matching circuit in a first low-frequency band or the second matching circuit in a second low-frequency band different from the first low-frequency band.

A WIFI & GPS antenna applied to a mobile terminal with a metallic body. The metallic body includes a metallic body part and a receiving zone located above the metallic body part. The WIFI & GPS antenna includes a feeding point and a ground point each disposed on the metallic body part, and a capacitive tuning component connected to a top edge of the receiving zone, and connected to the feeding point in series. The receiving zone includes a component zone and an antenna zone. The feeding point, the ground point, and the capacitive tuning component are disposed in the antenna zone. A part of the top edge of the receiving zone operates as a radiator for the WIFI & GPS antenna.

A WIFI & GPS antenna applied to a mobile terminal with a metallic body. The metallic body includes a metallic body part and a receiving zone located above the metallic body part. The WIFI & GPS antenna includes a feeding point and a ground point each disposed on the metallic body part, and a capacitive tuning component connected to a top edge of the receiving zone, and connected to the feeding point in series. The receiving zone includes a component zone and an antenna zone. The feeding point, the ground point, and the capacitive tuning component are disposed in the antenna zone. A part of the top edge of the receiving zone operates as a radiator for the WIFI & GPS antenna.

An antenna structure includes a metallic member. The metallic member includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap and a second gap. The front frame between the first gap and the second gap forms a radiating section. Current enters the radiating section from the first feed portion, the current flows through the radiating section and towards the first gap and the first radiating portion, thus activating radiating signals in a first frequency band; the current flows through the radiating section and towards the first ground portion, thus activating radiating signals in a second frequency band; the current flows through the radiating section and towards the second gap and the second radiating portion, thus activating radiation signals in a third different frequency band. A wireless communication device using the antenna structure is provided.