Abstract: A filter is provided that includes a set of cascaded resonator stages coupled between a filter input and a first filter output, wherein the filter includes a second filter output coupled to an output of a first or an intermediate one of the set of cascaded resonator stages. Another filter includes a set of cascaded resonator stages coupled between a first filter input and a filter output, wherein the filter includes a second filter input coupled to an input of an intermediate or a last one of the set of cascaded resonator stages. Both filters are configured to apply a first filter frequency response to a first signal propagating via the set of cascaded resonator stages, and apply a second filter frequency response to a second signal propagating via a subset of one or more of the set of cascaded resonator stages.

Abstract: A filter is provided that includes a set of cascaded resonator stages coupled between a filter input and a first filter output, wherein the filter includes a second filter output coupled to an output of a first or an intermediate one of the set of cascaded resonator stages. Another filter includes a set of cascaded resonator stages coupled between a first filter input and a filter output, wherein the filter includes a second filter input coupled to an input of an intermediate or a last one of the set of cascaded resonator stages. Both filters are configured to apply a first filter frequency response to a first signal propagating via the set of cascaded resonator stages, and apply a second filter frequency response to a second signal propagating via a subset of one or more of the set of cascaded resonator stages.

Abstract: An antenna stack and device is described. In an embodiment, a device comprises: a first antenna element coupled to a first antenna feed, the first antenna feed being coupled to a first feed line via a first impedance matching circuit; a second antenna element coupled to a second antenna feed, the second antenna feed being coupled to a second feed line via a second impedance matching circuit; and a radio frequency (RF) switch configurable into states; wherein in a first state, the switch is configured to ground the first antenna feed; in a second state, the switch is configured to be in a non-connection state, wherein neither the first antenna feed nor the second antenna feed is grounded; and in a third state, the switch is configured to ground the second antenna feed.

Abstract: An antenna stack and device is described. In an embodiment, a device comprises: a first antenna element coupled to a first antenna feed, the first antenna feed being coupled to a first feed line via a first impedance matching circuit; a second antenna element coupled to a second antenna feed, the second antenna feed being coupled to a second feed line via a second impedance matching circuit; and a radio frequency (RF) switch configurable into states; wherein in a first state, the switch is configured to ground the first antenna feed; in a second state, the switch is configured to be in a non-connection state, wherein neither the first antenna feed nor the second antenna feed is grounded; and in a third state, the switch is configured to ground the second antenna feed.