Abstract: An electronic device may be provided with an antenna having a resonating element formed from a segment of peripheral conductive housing structures. A speaker may be aligned with first openings in the segment. A vent may be aligned with second openings in the segment. A connector may protrude through the segment. A trace combiner for the antenna may be patterned onto the speaker and may be coupled to the segment. Tuners for the antenna may be disposed on first and second flexible printed circuits that extend along opposing sides of the connector. The tuners may be controlled through the speaker. The second flexible printed circuit may extend along the vent. The vent may have a vent cowling with a cut-out region next to the tuner on the second flexible printed circuit.

Abstract: According to various embodiments of this disclosure, an electrochemical sensor/cell includes a substrate with a cavity formed on a first side of the substrate, an ionic conductor is disposed within the cavity, and a lid assembly positioned over the cavity. The lid assembly may include a plurality of electrodes attached to a glass or ceramic panel. The glass or ceramic panel may have one or more apertures allowing gas to flow therethrough. The plurality of electrodes include a working electrode configured to react a molecular species (e.g., gas or aerosolized substance) that diffuses through the one or more apertures, wherein said reaction produces ions mobile in the ionic conductor between two or more of the plurality of electrodes. The lid assembly may further include a three-phase interface positioned over at least a portion of the plurality of electrodes.