Abstract:
Base station antennas are provided. A base station antenna includes a reflector and radiating elements that are in rows and columns on the reflector. Each of the radiating elements extends forwardly from the reflector. Moreover, the base station antenna includes power dividers that are on a calibration board, or on a feed board, of the base station antenna.
Abstract:
A base station antenna comprises an array of radiating elements configured to emit electromagnetic radiation and an RF lens positioned to receive the electromagnetic radiation. The RF lens has a first surface facing the array of radiating elements and a second surface opposite the first surface. The RF lens is divided into a plurality of portions that extend from the first surface to the second surface, respectively, the plurality of portions having respective refractive indices for the electromagnetic radiation, wherein the plurality of portions are arranged, in a width direction of the RF lens, such that a first of the plurality of portions having the highest refractive index is in a middle portion of the radio frequency lens and others of the plurality of portions having lower refractive indices are on either side of the first of the plurality of portions.
Abstract:
Base station antennas are provided. A base station antenna includes a reflector having a first surface and a second surface that is opposite the first surface. The antenna includes first and second feed boards having first and second integrated beamforming networks, respectively, on the first surface of the reflector. The antenna includes a first plurality of high-band radiating elements that extend forward from the first feed board. The antenna includes a second plurality of high-band radiating elements that extend forward from the second feed board. Moreover, the antenna includes a plurality of low-band radiating elements on the first surface of the reflector.
Abstract:
Apparatus include two or more radiating elements connected to a feed network of an antenna, and one or more dummy elements positioned between the two or more radiating elements. The dummy elements are not connected to the feed network of the antenna. Such an arrangement may result in reduced mutual coupling of the two or more radiating elements, and increased antenna performance.
Abstract:
Twin-beam base station antennas are provided. A twin-beam base station antenna includes a plurality of vertical columns of radiating elements that are configured to transmit radio frequency signals in a frequency band. The radiating elements have bent metal radiator arms including tip portions that face respective center axes of the radiating elements.
Abstract:
Base station antennas include an array of radiating elements that includes multiple columns of radiating elements, with each column including multiple radiating elements, a first phase shifter configured to change a phase of a radio frequency (RF) signal of a first frequency band for transmission in a beam forming mode, a second phase shifter configured to change a phase of an RF signal of a second frequency band for transmission in a multi-beam mode, where the RF signal of the second frequency band includes first and second beam signals, a multi-beam device configured to generate an output signal according to the phase shifted first beam signal and the phase shifted second beam signal, and a diplexer configured to receive the phase shifted RF signal of the first frequency band and the output signal of the multi-beam device, and transmit an output signal to the corresponding radiating elements.
Abstract:
A radiator for an antenna comprises a radiating element having a radiating arm and a feed portion and a first dielectric structure configured to cover at least 50% of the radiating element, the dielectric structure having a dielectric constant of at least 3.0. The dielectric structure reduces a first electrical length of the radiating arm by at least 20% and also reduces a second electrical length of the feed portion by at least 20%.
Abstract:
A patch antenna comprises a multilayer printed circuit board that includes a calibration network, an array of patch radiators and a feed network. In some embodiments, the multilayer printed circuit board includes a plurality of dielectric substrates, wherein the array of patch radiators is provided on a dielectric substrate different from the dielectric substrate on which the calibration network is provided, and the dielectric substrate provided with the array of patch radiators is provided above the dielectric substrate provided with the calibration network.
Abstract:
A radiating element for an antenna comprises at least one radiating arm having a first electrically conductive arm segment extending in a first direction and a second electrically conductive arm segment extending in a second direction and electrically connected to the first arm segment.
Abstract:
A first-band radiating element configured to operate in a first frequency band may be designed for reducing distortion associated with one or more second-band radiating element configured to operate in a second frequency band. The first-band radiating element may include a first printed circuit board. The first printed circuit board may include a first surface including a first feed line connected to a feed network of a feed board of an antenna. The radiating element may also include a second surface opposite the first surface. The second surface may include one or more first conductive planes connected to a ground plane of the feed board; and one or more first open-end traces coupled to the one or more conductive planes.