An antenna system for receiving over-the-air broadcast television signals includes a steerable directional antenna, a pedestal on which the directional antenna is rotatably mounted, a stepper motor to effect rotation of the steerable directional antenna, and a control circuit. The control circuit receives a control signal and causes the stepper motor to effect rotation of the steerable directional antenna. The directional antenna is steered such that its main lobe is generally directed to a television signal transmitting antenna selected by the user of the antenna system. The steering of the directional antenna is based on geographic location information associated with the television signal transmitting antenna.

Embodiments generally disclosed herein relate to a sub-wavelength multi-port codesign approach between the unit transceiver element and the integrated EM interface to enable a generalized broadband MIMO array with individually programmable element patterns. The co-design approach allows processing of radiated signals at the antenna level distinct from classical arrays. The transmitter and receiver architectures with the integrated EM interface are implemented in 65-nm CMOS and have a bandwidth of 37-73 GHz. Wireless links with data rates up to 12 Gb/s are demonstrated across the spectrum with a wide range of reconfigurability of the active EM interface. The multifunctional EM interface and the broadband transceivers can enable future efficient and compact MIMO arrays for reliable links exploiting frequency, spatial, pattern and polarization diversities.

An apparatus for detecting an object, including a transmitter and an antenna that receives a signal from the transmitter, radiates a transmitted beam of electromagnetic energy, and receives a reflected beam of electromagnetic energy, the reflected beam being a reflection of the transmitted beam when the transmitted beam is reflected from an object. The apparatus further includes a phase detector in communication with the antenna that detects a phase difference between the transmitted beam and the reflected beam, and that produces an output based on the phase difference, and a voltage meter that receives the output and produces a voltage reading.

An antenna assembly has a conductive line coupled to a feed point. An element is configured to resonate at a predetermined frequency. The element is electrically coupled to the conductive line and aligned perpendicular to the conductive line wherein the predetermined frequency of the element determines a distance from the feed point along the conductive line.

Systems and apparatuses include a radio frequency feed configured to connect to a feedline, and a plurality of radiating elements coupled with the radio frequency feed. Each radiating element is arranged at an oblique angle relative to an antenna axis and configured to radiate at a wavelength (). The plurality of radiating elements define a phase center distance between about 0.15 and about 0.2.

An elliptically polarized cavity backed wideband slot antenna with a planar log-periodic dipole is provided. Sufficiently large bandwidth is achieved with careful design of the dipole. Also, the antenna has constant E-field distribution and good impedance properties, and ensures a constant power ratio for vertical polarization and horizontal polarization over a broad frequency band.

An antenna comprises a printed circuit board that includes a central feed point and a plurality of antenna elements formed therein, where the antenna elements extending radially from the central feed point. Each antenna element comprises a feed line that is coupled to the central feed point, the feed line including a feed conductor and a ground conductor, and at least two dipole radiators coupled to the feed line, each dipole radiator comprising a first dipole arm that is coupled to the feed conductor and a second dipole arm that is coupled to the ground conductor. A first length of a first of the dipole radiators is different than a second length of a second of the dipole radiators. Each of the dipole radiators is fed in-phase.

A fin-type planar antenna and a deployable dipole antenna are combined into a probabilistic system as a co-located orthogonal diversity fin antenna to reduce or eliminate cross polarization fades and cancellation dropouts common to wireless audio systems used in theaters, churches and convention centers over coaxial wired connections. Additionally, an optical line may connect the diversity fin antenna to a further circuit. The antenna system features broad bandwidth, resistance to deep nulls or fades caused by cross polarization, resistance to destructive interference, and an air space dielectric covering provides resistance to detuning in the presence of rain, or touching objects.

An antenna assembly has a conductive line coupled to a feed point. An element is configured to resonate at a predetermined frequency. The element is electrically coupled to the conductive line and aligned perpendicular to the conductive line wherein the predetermined frequency of the element determines a distance from the feed point along the conductive line.

A log-periodic antenna including one set of three radiating elements with log-periodic patterns, each radiating element including a succession of radiating dipoles distributed on either side of a rectilinear electrically conducting line, perpendicular to the line, a first radiating element having a rectilinear electrically conducting line substantially perpendicular to the first face of the substrate, the first ends of the electrically conducting lines of the various radiating elements being substantially aligned along a direction parallel to the first face, the rectilinear electrically conducting lines of the second and third radiating elements being situated in a same plane as the rectilinear electrically conducting line of the first radiating element and inclined with respect to the electrically conducing line of the first radiating element, the radiating dipoles of the three radiating elements being substantially perpendicular to the plane which contains the rectilinear electrically conducting lines of the three radiating elements.