A directional coupler includes a substrate, a main line, a first sub-line, and a ground conductor. The main line includes a first conductor line and a second conductor line electrically connected to each other. The first sub-line includes a third conductor line. The first conductor line and the second conductor line are able to be electromagnetically coupled to the third conductor line. The first conductor line has a first edge and a second edge. The second conductor line has a third edge and a fourth edge. The third conductor line has a fifth edge and a sixth edge. The first conductor line, the second conductor line, and the third conductor line are arranged in such a manner that the first edge, the fifth edge, the third edge, the second edge, the sixth edge, and the fourth edge are arranged in this order when the substrate is viewed in plan.

Tunable, broadband directional coupler circuits employing one or more additional, switchable coupling circuits for controlling frequency response, and related methods. In exemplary aspects, the directional coupler includes one or more additional coupling circuits that each include an additional coupling line located adjacent to the primary coupling line and that can be selectively activated to change a frequency response of the directional coupler. When an additional coupling circuit is activated, its additional coupling line has the effect of extending the length of the primary coupling line through mutual inductance, thus changing the coupling frequency response of the directional coupler. The additional coupling circuit includes one or more switch(es) to allow for the selective coupling of its additional coupling line to the coupling and/or isolation ports of the directional coupler to selectively change and control the frequency response of the primary coupling line.

Tunable, broadband directional coupler circuits employing one or more additional, switchable coupling circuits for controlling frequency response, and related methods. In exemplary aspects, the directional coupler includes one or more additional coupling circuits that each include an additional coupling line located adjacent to the primary coupling line and that can be selectively activated to change a frequency response of the directional coupler. When an additional coupling circuit is activated, its additional coupling line has the effect of extending the length of the primary coupling line through mutual inductance, thus changing the coupling frequency response of the directional coupler. The additional coupling circuit includes one or more switch(es) to allow for the selective coupling of its additional coupling line to the coupling and/or isolation ports of the directional coupler to selectively change and control the frequency response of the primary coupling line.

An integrated circuit operable to measure an impedance presented to a transmitter path of the integrated circuit and a method thereof are provided. The integrated circuit includes a directional coupler that has an input port, a through port, a coupled port, and an isolation port. The integrated circuit also includes a power amplifier coupled to the input port of the directional coupler, a power detector configured to measure output levels from the coupled port and the isolation port of the directional coupler, a reference signal generator coupled to the isolation port of the directional coupler, and a vector modulator configured to adjust a phase of a signal generated from the power amplifier.

An integrated circuit operable to measure an impedance presented to a transmitter path of the integrated circuit and a method thereof are provided. The integrated circuit includes a directional coupler that has an input port, a through port, a coupled port, and an isolation port. The integrated circuit also includes a power amplifier coupled to the input port of the directional coupler, a power detector configured to measure output levels from the coupled port and the isolation port of the directional coupler, a reference signal generator coupled to the isolation port of the directional coupler, and a vector modulator configured to adjust a phase of a signal generated from the power amplifier.

A radar system includes a split-block assembly unit comprising a first portion and second portion, where the first portion and the second portion form a seam. The radar system further includes a plurality of ports located on a bottom side of the second portion opposite the seam. Additionally, the radar system includes a plurality of radiating elements located on a top side of the first portion opposite the seam. The plurality of radiating elements is arranged in a plurality of arrays. The plurality of arrays includes a set of multiple-input multiple-output (MIMO) transmission arrays, a set of synthetic aperture radar (SAR) transmission arrays, and at least one reception array. Further, the radar system includes a set of waveguides configured to couple each array to a port.

An antenna wireless device includes: antenna elements; feed ports respectively corresponding to the antenna elements; one or more detection ports each corresponding to some or all of the plurality of antenna elements; transceiver circuits respectively connected to feed ports; and one or more reference transceiver circuits each connected to a corresponding one or more of the one or more detection ports. For each antenna element, the transceiver circuit processes a first signal to generate a second signal, the second signal fed to the feed port is output to the reference transceiver circuit through the detection port, the reference transceiver circuit processes the second signal to generate a third signal, and detects an amplitude and phase deviation based on the first signal and the third signal, and the transceiver circuit adjusts a phase and an amplitude of a transmission signal based on the amplitude and phase deviation.

An antenna wireless device includes: antenna elements; feed ports respectively corresponding to the antenna elements; one or more detection ports each corresponding to some or all of the plurality of antenna elements; transceiver circuits respectively connected to feed ports; and one or more reference transceiver circuits each connected to a corresponding one or more of the one or more detection ports. For each antenna element, the transceiver circuit processes a first signal to generate a second signal, the second signal fed to the feed port is output to the reference transceiver circuit through the detection port, the reference transceiver circuit processes the second signal to generate a third signal, and detects an amplitude and phase deviation based on the first signal and the third signal, and the transceiver circuit adjusts a phase and an amplitude of a transmission signal based on the amplitude and phase deviation.

A high frequency coupler is disclosed that is configured for grid array-type surface mounting. The coupler includes a monolithic base substrate having a top surface and a bottom surface. A first thin film microstrip and a second thin film microstrip are each disposed on the top surface of the monolithic base substrate. Each microstrip has an input end and an output end. At least one via extends through the monolithic base substrate from the top surface to the bottom surface of the monolithic base substrate. The via(s) are electrically connected with at least one of the input end or the output end of the first microstrip or the second microstrip. The coupler has a coupling factor that is greater than about −30 dB at about 28 GHz.

Techniques are provided to more accurately determine reflected power, reflection coefficient, and/or voltage standing wave to permit prompt protection of components such as power amplifiers and notify communication system operators. This is accomplished by more accurately determining an amplitude and phase of an output reflected signal at an output port of a bidirectional coupler as a function of the following: an amplitude and a phase of a coupled forward signal coupled into a forward coupled port of the bidirectional coupler; an amplitude and a phase of a coupled reverse signal coupled into a reverse coupled port of the bidirectional coupler; an electrical transmission parameter from an input port of the bidirectional coupler to the forward coupled port; an electrical transmission parameter from the input port to the reverse coupled port; and an electrical transmission parameter from an output port of the bidirectional coupler to the reverse coupled port.