Abstract: The present document discloses a transmission arrangement for coupling an amplifier to a transmission medium. An input node of the amplifier is couplable to a transmitter and an output node of the amplifier is couplable to a terminal of the transmission medium. The transmission arrangement may comprise a first branch coupled between the input node of the amplifier and an intermediate node which is couplable to a receiver. The transmission arrangement may further comprise a second branch coupled between the output node of the amplifier and the intermediate node. In particular, the first branch comprises a first capacitive element, while the second branch comprises a second capacitive element. Furthermore, at least one of the first and second branches further comprises a phase matching circuit coupled in series with the respective capacitive element.

Abstract: The present document discloses a transmission arrangement for coupling an amplifier to a transmission medium. An input node of the amplifier is couplable to a transmitter and an output node of the amplifier is couplable to a terminal of the transmission medium. The transmission arrangement may comprise a first branch coupled between the input node of the amplifier and an intermediate node which is couplable to a receiver. The transmission arrangement may further comprise a second branch coupled between the output node of the amplifier and the intermediate node. In particular, the first branch comprises a first capacitive element, while the second branch comprises a second capacitive element. Furthermore, at least one of the first and second branches further comprises a phase matching circuit coupled in series with the respective capacitive element.

Abstract: Methods and apparatus, including computer program products, are provided for tunable filters and/or front-ends. In one aspect there is provided an apparatus. The apparatus may a first band filter; a second tunable band filter; and a radio frequency switch coupled to at least the first band filter and the second tunable band filter, wherein the radio frequency switch is configured to switch between at least the first band filter and the second tunable band filter. Related apparatus, systems, methods, and articles are also described.

Abstract: Methods and apparatus, including computer program products, are provided for a tunable filter. In some example embodiments, there may be provided an apparatus. In some example embodiments, there is provided an apparatus. The apparatus may include a tunable radio frequency filter including a tunable phase shifter coupled to a resonator, wherein the tunable phase shifter tunes a center frequency of the tunable radio frequency filter by at least varying a phase of a radio frequency signal provided to the resonator. Related apparatus, systems, methods, and articles are also described.

Abstract: Methods and apparatus, including computer program products, are provided for a tunable filter. In some example embodiments, there may be provided an apparatus. In some example embodiments, there is provided an apparatus. The apparatus may include a tunable radio frequency filter including a tunable phase shifter coupled to a resonator, wherein the tunable phase shifter tunes a center frequency of the tunable radio frequency filter by at least varying a phase of a radio frequency signal provided to the resonator. Related apparatus, systems, methods, and articles are also described.

Abstract: Methods and apparatus, including computer program products, are provided for tunable filters and/or front-ends. In one aspect there is provided an apparatus. The apparatus may a first band filter; a second tunable band filter; and a radio frequency switch coupled to at least the first band filter and the second tunable band filter, wherein the radio frequency switch is configured to switch between at least the first band filter and the second tunable band filter. Related apparatus, systems, methods, and articles are also described.