Exemplary embodiments are disclosed of antenna assemblies configured for reception of television signals, such as high definition television (HDTV) signals. In an exemplary embodiment, an antenna assembly generally includes a VHF antenna element and a UHF antenna element. The VHF antenna element and the UHF antenna element may be parasitically coupled without a direct ohmic connection between the VHF antenna element and the UHF antenna element. The antenna assembly may be configured to be operable for receiving VHF and UHF high definition television signals without using a diplexer and a VHF balun.

The invention relates to antenna technology. An antenna comprises a matching device in the form of a transformer consisting of a primary winding and a secondary winding, a radiating vibrator in the form of a planar or three-dimensional conducting body, the radiating vibrator being connected to the secondary winding and arranged in a magnetic field of the matching transformer. Reactive discrete components (of capacitance, inductance) are galvanically connected within a gap to the matching transformer using controlled relays, or capacitive elements arranged alongside turns of the secondary winding of the transformer are connected using relays to one of the points of the transformer. The technical result is the capability of rapid retuning of the working frequency of the antenna in a broad range of frequencies and, consequently, the capability of compensating for the influence of external objects which have capacitance, and switching to other radio signal reception and transmission frequency channels.

The invention relates to antenna technology. An antenna comprises a matching device in the form of a transformer consisting of a primary winding and a secondary winding, a radiating vibrator in the form of a planar or three-dimensional conducting body, the radiating vibrator being connected to the secondary winding and arranged in a magnetic field of the matching transformer. Reactive discrete components (of capacitance, inductance) are galvanically connected within a gap to the matching transformer using controlled relays, or capacitive elements arranged alongside turns of the secondary winding of the transformer are connected using relays to one of the points of the transformer. The technical result is the capability of rapid retuning of the working frequency of the antenna in a broad range of frequencies and, consequently, the capability of compensating for the influence of external objects which have capacitance, and switching to other radio signal reception and transmission frequency channels.

An additively manufactured antenna device is disclosed, including a base portion and a body portion. The body portion is attached to the base portion and includes a lattice stiffening structure configured to eliminate secondary printing support.

An additively manufactured antenna device is disclosed, including a base portion and a body portion. The body portion is attached to the base portion and includes a lattice stiffening structure configured to eliminate secondary printing support.

Radiating elements include a first and second dipole arms that extend along a first axis and that are configured to transmit RF signals in a first frequency band. The first dipole arm is configured to be more transparent to RF signals in a second frequency band than it is to RF signals in a third frequency band, and the second dipole arm is configured to be more transparent to RF signals in the third frequency band than it is to RF signals in the second frequency band. Related base station antennas are also provided.

A dipole antenna is disclosed. The dipole antenna includes a first arm, a second arm, and a first conductive plate. The first conductive plate is placed inside one of the first arm or the second arm. The first conductive plate creates a cavity inside the one of the first arm or the second arm.

A dipole antenna is disclosed. The dipole antenna includes a first arm, a second arm, and a first conductive plate. The first conductive plate is placed inside one of the first arm or the second arm. The first conductive plate creates a cavity inside the one of the first arm or the second arm.

Exemplary embodiments are disclosed of antenna assemblies configured for reception of television signals, such as high definition television (HDTV) signals. In an exemplary embodiment, an antenna assembly generally includes a VHF antenna element and a UHF antenna element. The VHF antenna element and the UHF antenna element may be parasitically coupled without a direct ohmic connection between the VHF antenna element and the UHF antenna element. The antenna assembly may be configured to be operable for receiving VHF and UHF high definition television signals without using a diplexer and a VHF balun.

Radiating elements include a first and second dipole arms that extend along a first axis and that are configured to transmit RF signals in a first frequency band. The first dipole arm is configured to be more transparent to RF signals in a second frequency band than it is to RF signals in a third frequency band, and the second dipole arm is configured to be more transparent to RF signals in the third frequency band than it is to RF signals in the second frequency band. Related base station antennas are also provided.