Abstract: A full duplex communication system comprises a magnet-less ring circulator that comprises a set of ports extending from a circumference of the magnet-less multi-port ring combiner. The set of ports are positioned at increments around the circumference of the magnet-less multi-port ring combiner.

Abstract: A magnet-less multi-port ring combiner comprises a set of ports extending from the circumference of the magnet-less multi-port ring combiner. The set of ports are positioned at ¼ increments around the circumference of the magnet-less multi-port ring combiner. The set of ports comprise a first input port configured to receive a first input signal and a second input port configured to receive a second input signal, wherein the first input signal is 180° out-of-phase with the second input signal. The N-way magnet-less multi-port combiner comprises more than four ports.

Abstract: An electronic switch for switching between signal outputs comprises a 6-way symmetric hybrid ring combiner. Each port within the 6-way symmetric hybrid ring combiner is positioned at ?/4 wavelength increments around a circumference of the 6-way symmetric hybrid ring combiner.

Abstract: A full duplex communication system comprises a magnet-less ring circulator that comprises a set of ports extending from a circumference of the magnet-less multi-port ring combiner. The set of ports are positioned at increments around the circumference of the magnet-less multi-port ring combiner.

Abstract: An electronic switch for switching between signal outputs comprises a 6-way symmetric hybrid ring combiner. Each port within the 6-way symmetric hybrid ring combiner is positioned at ?/4 wavelength increments around a circumference of the 6-way symmetric hybrid ring combiner.

Abstract: A magnet-less multi-port ring combiner comprises a set of ports extending from the circumference of the magnet-less multi-port ring combiner. The set of ports are positioned at ¼ increments around the circumference of the magnet-less multi-port ring combiner. The set of ports comprise a first input port configured to receive a first input signal and a second input port configured to receive a second input signal, wherein the first input signal is 180° out-of-phase with the second input signal. The N-way magnet-less multi-port combiner comprises more than four ports.

Abstract: Embodiments include different multi-port ring combiners which are configured to act as multi-output signal routers. One type of multi-port ring combiner includes input ports that are driven by pairs of outphasing signals. The multi-port ring combiner also includes multiple channels that are independently routed to a first output, to a second output, or to a third output, according to a phase relationship of the multi-port ring combiner. The multi-port ring combiner enables an outphasing signal combination which provides output port selection. The multi-port ring combiner may be a 4-port ring combiner, a 5-port ring combiner or a 6-port ring combiner.

Abstract: A multi-path receiver for automated test equipment. The multi-path receiver includes an input for receiving low-power signals and high-power signals. The high-power signals have signal amplitude higher than the low-power signals. The multi-path receiver further comprises an output for outputting a received signal, a first path for transmitting a received high-power signal from the input to the output and a second path for transmitting a received low-power signal from the input to the output. The second path comprises an amplifier. A first switch is provided for switching a received high-power signal to the first path and for switching a received low-power signal to the second path. A high-power amplifier is also connected between the input and the first switch for amplifying the received signal independent of its input power before it is switched with the first path or the second path.

Abstract: The adjustable gain amplifier comprises an amplifier transistor comprising a control terminal and a controllable path. The adjustable gain amplifier also comprises a variable impedance circuit, which is configured to provide variable impedance for varying a gain of the amplifier transistor. The load path of the amplifier transistor and the variable impedance circuit are coupled in series between a first supply potential feed and a second supply potential feed. The adjustable gain amplifier also comprises an active feedback circuit configured to stabilize a load path bias voltage of the amplifier transistor.

Abstract: A multi-path receiver for automated test equipment. The multi-path receiver includes an input for receiving low-power signals and high-power signals. The high-power signals have signal amplitude higher than the low-power signals. The multi-path receiver further comprises an output for outputting a received signal, a first path for transmitting a received high-power signal from the input to the output and a second path for transmitting a received low-power signal from the input to the output. The second path comprises an amplifier. A first switch is provided for switching a received high-power signal to the first path and for switching a received low-power signal to the second path. A high-power amplifier is also connected between the input and the first switch for amplifying the received signal independent of its input power before it is switched with the first path or the second path.