A dual band radio frequency signal acquisition and source location system, provided with a steerable phased array antenna operable in a first and a second radio frequency band. A digital signal processor electrically connected to the steerable phased array antenna is configured to control steering of an antenna beam of the steerable phased array antenna and apply frequency time division multiplexing to radio frequency signaling in the first and the second radio frequency bands. In particular, the first frequency band may be 2.4 GHz Bluetooth/Bluetooth Low Energy, and the second frequency band may be 900 MHz passive UHF RFID.

A dual band radio frequency signal acquisition and source location system, provided with a steerable phased array antenna operable in a first and a second radio frequency band. A digital signal processor electrically connected to the steerable phased array antenna is configured to control steering of an antenna beam of the steerable phased array antenna and apply frequency time division multiplexing to radio frequency signaling in the first and the second radio frequency bands. In particular, the first frequency band may be 2.4 GHz Bluetooth/Bluetooth Low Energy, and the second frequency band may be 900 MHz passive UHF RFID.

A dual band antenna that allows the independent optimization of each frequency band by adjusting the sizes of the antenna elements. For example, an antenna may have two different drivers, one for the high-frequency and one for the low frequency. By using elements orthogonally connected to the low frequency driver, the low frequency driver can function as both a reflector to the high frequency drivers and the low frequency driver without affecting the antenna's performance in the high frequency. The antenna may also have parasitic elements. For example, parasitic directors parallel to the high frequency band driver can be configured to improve performance in the high frequency band. Pairs of additional parasitic directors can be orthogonally connected these directors. These pairs can be adjusted in size to improve performance in the low frequency band with minimal impact on performance in the high frequency band.

A dual band antenna element suitable for use in a compact multiband antenna array is described. The dual band antenna element may have a main radiating direction with a first radiating element for use in a first frequency band, a first electrically closed ring for use in the first frequency band galvanically isolated from and arranged at a predetermined distance from the first radiating element in the main radiating direction. The first ring) may at least partially overlap the first radiating element in the main radiating direction. The dual band antenna element may also have a second radiating element for use in a second frequency band, where the second radiating element is arranged within a circumference of the first radiating element and is arranged substantially at the predetermined distance (D) from the first radiating element in the radiation direction.

A dual band antenna element suitable for use in a compact multiband antenna array is described. The dual band antenna element may have a main radiating direction with a first radiating element for use in a first frequency band, a first electrically closed ring for use in the first frequency band galvanically isolated from and arranged at a predetermined distance from the first radiating element in the main radiating direction. The first ring) may at least partially overlap the first radiating element in the main radiating direction. The dual band antenna element may also have a second radiating element for use in a second frequency band, where the second radiating element is arranged within a circumference of the first radiating element and is arranged substantially at the predetermined distance (D) from the first radiating element in the radiation direction.

A multi-band antenna structure, including a first antenna element, a second antenna element, a reflection panel, and a first parasitic structure of the first antenna element. A distance between the reflection panel and an antenna element with a higher operating frequency band is less than a distance between the reflection panel and an antenna element with a lower operating frequency band. A distance between the first antenna element and the second antenna element is less than 0.5 times a vacuum wavelength corresponding to a lower frequency bands. A distance between the first antenna element and the first parasitic structure is less than 0.5 times a vacuum wavelength corresponding to an operating frequency band of the first antenna element. A distance between the second antenna element and the first parasitic structure is less than 0.5 times a vacuum wavelength corresponding to an operating frequency band of the second antenna element.

An antenna includes a ground plane, a first resonator connected to a feeding point for which the ground plane serves as a reference, a second resonator configured to receive power from the first resonator through electromagnetic coupling or magnetic coupling in a contactless manner, at least one director located away from the first resonator and the second resonator, and wherein the ground plane located at a side opposite to the director with respect to the second resonator is used as a reflector, or the antenna further comprises a reflector located at the side opposite to the director with respect to the second resonator.

An antenna includes a ground plane, a first resonator connected to a feeding point for which the ground plane serves as a reference, a second resonator configured to receive power from the first resonator through electromagnetic coupling or magnetic coupling in a contactless manner, at least one director located away from the first resonator and the second resonator, and wherein the ground plane located at a side opposite to the director with respect to the second resonator is used as a reflector, or the antenna further comprises a reflector located at the side opposite to the director with respect to the second resonator.

An antenna device (1) includes one or a plurality of feeding antennas (3) provided on a main surface (2a) of a substrate (2), a parasitic antenna (4) provided on the substrate (2), and a terminator (5) provided on the substrate (2) and connected to the parasitic antenna (4). The terminator (5) includes an SIW (52) that is a waveguide extending in the substrate (2).

An antenna device (1) includes one or a plurality of feeding antennas (3) provided on a main surface (2a) of a substrate (2), a parasitic antenna (4) provided on the substrate (2), and a terminator (5) provided on the substrate (2) and connected to the parasitic antenna (4). The terminator (5) includes an SIW (52) that is a waveguide extending in the substrate (2).