Abstract: In various aspects, a radio frequency circuit is provided. The radio frequency circuit may include a substrate that may include a radio frequency front-end to antenna (RF FE-to-Ant) connector. The RF FE-to-Ant connector may include a conductor track structure and a substrate connection structure coupled to the conductor track structure. The substrate may include radio frequency front-end circuitry monolithically integrated in the substrate. The substrate connection structure may include at least one of a solderable structure, a weldable structure, or an adherable structure. The substrate connection structure may be configured to form at least one radio frequency signal interface with an antenna circuit connection structure of a substrate-external antenna circuit. The substrate may include an edge region. The substrate connection structure may be disposed in the edge region.

Abstract: Monodirectional antennas may be arranged to radiate in a near omni-directional pattern. By incorporating switches into the antenna arrangement, the antennas can be controlled to selectively radiate from a common radiofrequency feed. These arrangements may be packaged in a housing, which may aid both in antenna performance and in antenna installation. According to another aspect of the disclosure, housings may include a plurality of antennas, and one or more procedures may be implemented to determine a codebook to radiate from the circular arrangement according to various beam constrains.

Abstract: A radio frequency front end and an antenna front end may be separated from one another to maintain close proximity between a low noise amplifier and an antenna while achieving improved thermal regulation of a power amplifier. The radio frequency front end antenna front end may include a duplexing system that enables operation with a single electrical cable. Furthermore, where it is desired to transmit a radiofrequency signal via a waveguide, a flexible waveguide may be constructed with a distributed capacitance between waveguide protrusions.

Abstract: A radar device may include a digital to analog converter (DAC) stage. The DAC stage may generate a plurality of analog signals. The DAC stage may generate a different analog signal for each transmitter chain of a plurality of transmitter chains. Each analog signal of the plurality of analog signals may represent a single digital signal. Each transmitter chain of the plurality of transmitter chains may include a transmit chain portion and switched analog beamforming network (BFN). The transmit chain portion may generate a plurality of intermediate analog signals representative of the corresponding analog signal. The switched analog BFN may generate a plurality of analog transmit signals for an intermediate analog signal of the plurality of intermediate analog signals. The plurality of analog transmit signals may include a beam formed in accordance with a state of the switched analog BFN.