Abstract:
An apparatus includes a first metal region of a substrate, a second metal region of the substrate, and vias that electrically connect the first metal region to the second metal region to define a cavity of a slot aperture antenna.
Abstract:
A printed millimeter wave dipole antenna and techniques for designing such an antenna are disclosed. In one embodiment, the dipole antenna comprises: a signal wing and at least one ground wing for propagating signals in a millimeter wave band; and an unbalanced feeding structure directly coupled to the signal wing. The unbalanced feeding structure is boarded by a plurality of escorting vias to ensure equipotential grounds.
Abstract:
An apparatus includes a first ground plane, a second ground plane, an antenna, and a balun coupled to the antenna. The balun is disposed between the first ground plane and the second ground plane.
Abstract:
Certain aspects of the present disclosure relate to methods and apparatus for wireless communication, and more particularly, to using a flexible printed circuit board (PCB) to convey signals between a radio frequency (RF) module and a baseband module. The flexible PCB can then be used as a medium for deploying antennas or creating arrays of multiple RF modules.
Abstract:
Aspects of the present disclosure provide a radio frequency (RF) system that may be implemented in a variety of devices. For example, the RF system may include a plurality of first RF-modules, each configured to process RF signals received from a corresponding antenna array to generate intermediate frequency (IF) signals and to process IF signals for transmission via the antenna array, wherein the plurality of first RF modules are coupled to each other via a first interface comprising transmission lines for carrying at least an IF signal, a local oscillator (LO) signal, and a control signals; at least one second RF module; and a baseband module configured to provide IF signals, the LO signal, and the control signals to one of the first RF modules via a second interface and to provide at least IF signals to the second RF module via a third interface.
Abstract:
An apparatus includes a first metal region of a substrate, a second metal region of the substrate, and vias that electrically connect the first metal region to the second metal region to define a cavity of a slot aperture antenna.
Abstract:
The apparatus is a wake-up circuit including a first comparator coupled to an input signal and configured to compare the input signal to a first comparison value. The wake-up circuit includes a second comparator coupled to the input signal and configured to compare the input signal to a second comparison value. The wake-up circuit further includes an exclusive OR gate. A first input of the exclusive OR gate is coupled to an output of the first comparator. A second input of the exclusive OR gate is coupled to an output of the second comparator. The wake-up circuit also includes a tunable charge pump coupled to an output of the exclusive OR gate and configured to convert a signal from the exclusive OR gate to a DC value to wake up a circuit being monitored.
Abstract:
Certain aspects of the present disclosure provide an apparatus for wireless communication. The apparatus may generally include a plurality of detectors, each configured to detect a signal received by at least one of a plurality of antenna arrays. The apparatus may further include a processing system configured to determine whether the signal is received by the at least one of the plurality of antenna arrays based on signals output from the plurality of detectors.
Abstract:
The disclosure generally relates to a compact bypass and decoupling structure that can be used in a millimeter-wave radio frequency integrated circuit (RFIC). For example, according to various aspects, an RFIC incorporating the compact bypass and decoupling structure may comprise a grounded substrate, a mid-metal ground plane, a bypass capacitor disposed between the grounded substrate and the mid-metal ground plane, and a decoupling inductor disposed over the mid-metal ground plane. The bypass capacitor may close a current loop in the RFIC and the decoupling inductor may provide damping in a supply network associated with the RFIC. Furthermore, the decoupling conductor may have a self-resonance substantially close to an operating band associated with the RFIC to increase series isolation, introduce substrate losses that facilitate the damping in the supply network, and prevent high-Q resonances.
Abstract:
A millimeter-wave radio frequency (RF) module is provided. The RF module includes a multilayer substrate having at least a front layer, a back layer, a plurality of middle layers, a first ground layer, and a second ground layer, wherein the first ground layer includes a graded-ground plane having a pair of non-overlapping ground lines connected at a single connection point through a graded connection, and wherein the second ground layer includes a double graded-ground plane having a pair of overlapping ground lines connected at a single connection point through a graded connection, wherein the first ground layer and the second ground layer provide a reference ground to a transmission line included in the multilayer substrate.