Abstract: A directional coupler device includes an asymmetric dual directional coupler for receiving a radio frequency (RF) signal and a switching circuit. The asymmetric dual directional coupler includes a main line having an input port and an output port, multiple coupled lines separated from the main line, the coupled lines having different lengths for providing different coupling factors, respectively, where each coupled line has first and second ports. The switching circuit selectively applies one of the different coupling factors of the coupled lines, depending on frequency of the RF signal in relation to a predetermined threshold frequency, while coupling a portion of forward power or reverse power of the RF signal to a coupling reading port, to mitigate power loss in an upper frequency range of the RF signal, while satisfying coupling criteria.

Abstract: An amplifier module includes a magnitude detector configured to detect a magnitude of a reflection coefficient, and a phase detector configured to detect a phase of the reflection coefficient The magnitude detector includes an incident signal amplifier configured to amplify an incident signal, an output level controller configured control a level of an output of the incident signal amplifier, a reflected signal amplifier configured to amplify a reflected signal, and a comparator configured to compare an output of the incident signal amplifier with an output of the reflected signal amplifier to output a comparison result indicating whether the magnitude of the reflection coefficient is equal to or greater than a threshold determined based on the control signal.

Abstract: An amplifier module includes a magnitude detector configured to detect a magnitude of a reflection coefficient, and a phase detector configured to detect a phase of the reflection coefficient The magnitude detector includes an incident signal amplifier configured to amplify an incident signal, an output level controller configured control a level of an output of the incident signal amplifier, a reflected signal amplifier configured to amplify a reflected signal, and a comparator configured to compare an output of the incident signal amplifier with an output of the reflected signal amplifier to output a comparison result indicating whether the magnitude of the reflection coefficient is equal to or greater than a threshold determined based on the control signal.

Abstract: An amplifier module includes a magnitude detector configured to detect a magnitude of a reflection coefficient, and a phase detector configured to detect a phase of the reflection coefficient. The magnitude detector includes an incident signal amplifier configured to amplify an incident signal, an output level controller configured control a level of an output of the incident signal amplifier, a reflected signal amplifier configured to amplify a reflected signal, and a comparator configured to compare an output of the incident signal amplifier with an output of the reflected signal amplifier to output a comparison result indicating whether the magnitude of the reflection coefficient is equal to or greater than a threshold determined based on the control signal.

Abstract: An amplifier module includes a magnitude detector configured to detect a magnitude of a reflection coefficient, and a phase detector configured to detect a phase of the reflection coefficient. The magnitude detector includes an incident signal amplifier configured to amplify an incident signal, an output level controller configured control a level of an output of the incident signal amplifier, a reflected signal amplifier configured to amplify a reflected signal, and a comparator configured to compare an output of the incident signal amplifier with an output of the reflected signal amplifier to output a comparison result indicating whether the magnitude of the reflection coefficient is equal to or greater than a threshold determined based on the control signal.