A radio node includes RF circuitry and an antenna array that includes a plurality of columns of radiating elements, the antenna array coupled to the RF circuitry. The antenna array is configured to have a discrete set of beam states in an elevation plane of the antenna array. A first subset of the discrete set of beam states is associated with the radio node being mounted in a wall mount configuration and a second subset of the discrete set of beam states is associated with radio node being mounted in a ceiling mount configuration.

Embodiments of the present disclosure provide a liquid crystal phase shifter and an antenna, which relate to the field of electromagnetic waves and can adjust carrier frequencies applicable to the liquid crystal phase shifter, improving compatibility of the liquid crystal phase shifter. The liquid crystal phase shifter includes at least one phase-shifting unit. The phase-shifting unit includes a microstrip line and a phase-controlled electrode, the microstrip line includes a plurality of sub-microstrip lines, each sub-microstrip line includes two ends and a transmission portion connected between the two ends, and any two adjacent sub-microstrip lines share one end. The phase-shifting unit further includes feed terminals located on a side of the first substrate facing away from the second substrate or on a side of the second substrate facing away from the first substrate, and each of the feed terminals overlaps the corresponding end respectively.

Embodiments of the present disclosure provide a liquid crystal phase shifter and an antenna, which relate to the field of electromagnetic waves and can adjust carrier frequencies applicable to the liquid crystal phase shifter, improving compatibility of the liquid crystal phase shifter. The liquid crystal phase shifter includes at least one phase-shifting unit. The phase-shifting unit includes a microstrip line and a phase-controlled electrode, the microstrip line includes a plurality of sub-microstrip lines, each sub-microstrip line includes two ends and a transmission portion connected between the two ends, and any two adjacent sub-microstrip lines share one end. The phase-shifting unit further includes feed terminals located on a side of the first substrate facing away from the second substrate or on a side of the second substrate facing away from the first substrate, and each of the feed terminals overlaps the corresponding end respectively.

An electrically tunable radio frequency phase shifter with compact 3-D structure that integrates both ferromagnetic and ferroelectric materials, and utilizes 3-D structure to increase the tuning efficiency and achieve miniaturization.

An electrically tunable radio frequency phase shifter with compact 3-D structure that integrates both ferromagnetic and ferroelectric materials, and utilizes 3-D structure to increase the tuning efficiency and achieve miniaturization.

The disclosed systems, structures, and methods are directed to an antenna comprising: a plurality of Composite Right Left Handed (CRLH) magneto-electric unit-cell based structures, each CRLH magneto-electric unit-cell based structure comprising: a ground electrode for common electrical contacts, a first coaxial connector and a second coaxial connector, a first ground surface and a second ground surface, the first ground surface connected to a second end of the first coaxial connector and the second ground surface connected to a second end of the second coaxial connector, a coaxial line included in the second coaxial connector, a microstrip feed line connected to the coaxial line and electromagnetically coupled with the first and the second ground surfaces, and a first non-resonant meta-surface patch and a second non-resonant meta-surface patch, each of the first and second non-resonant meta-surface patches placed above a series-capacitor gap between the first ground surface and the second ground surface.

The disclosed systems, structures, and methods are directed to an antenna comprising: a plurality of Composite Right Left Handed (CRLH) magneto-electric unit-cell based structures, each CRLH magneto-electric unit-cell based structure comprising: a ground electrode for common electrical contacts, a first coaxial connector and a second coaxial connector, a first ground surface and a second ground surface, the first ground surface connected to a second end of the first coaxial connector and the second ground surface connected to a second end of the second coaxial connector, a coaxial line included in the second coaxial connector, a microstrip feed line connected to the coaxial line and electromagnetically coupled with the first and the second ground surfaces, and a first non-resonant meta-surface patch and a second non-resonant meta-surface patch, each of the first and second non-resonant meta-surface patches placed above a series-capacitor gap between the first ground surface and the second ground surface.

The transmitter includes a phase shifter that shifts a phase of an input signal and outputs a shifted signal; a first control circuit changes a phase shift amount of the phase shifter; a phase difference signal output circuit outputs a phase difference signal between the shifted signal and the reference signal; an extreme value output circuit outputs a value of the phase difference signal when the phase difference signal becomes the extreme value; a target value output circuit outputs a target value based on an output from the extreme value output circuit; and a second control circuit controls the phase shift amount of the phase shifter such that a value of the phase difference signal coincides with the target value. The phase shifter outputs, as a transmission wave, the input signal the phase of which is shifted by the phase shift amount controlled by the second control circuit.

The transmitter includes a phase shifter that shifts a phase of an input signal and outputs a shifted signal; a first control circuit changes a phase shift amount of the phase shifter; a phase difference signal output circuit outputs a phase difference signal between the shifted signal and the reference signal; an extreme value output circuit outputs a value of the phase difference signal when the phase difference signal becomes the extreme value; a target value output circuit outputs a target value based on an output from the extreme value output circuit; and a second control circuit controls the phase shift amount of the phase shifter such that a value of the phase difference signal coincides with the target value. The phase shifter outputs, as a transmission wave, the input signal the phase of which is shifted by the phase shift amount controlled by the second control circuit.

An electronically scanned antenna comprising a travelling wave guiding structure having a bottom conductor and a top conductor developing each along a first direction, the top conductor comprising a plurality of first conductive patches arranged periodically along said first direction and connected in series by tuning circuits; the electronically scanned antenna further comprising a plurality of amplifiers arranged for compensating resistive and radiation losses along the length of the travelling wave guiding structure.