Abstract:
Radiated elements are embedded in in a touch panel that includes a plurality of layers including at least one conductive layer and at least one silver layer. The plurality of layers are configured a stack up configuration. The touch panel also includes a border region around the perimeter of each of the at least one conductive layer and the at least one silver layer. The border region is configured to function as an electro static discharge protector and all portions of the border region are configured to house an arbitrary pattern of antennas
Abstract:
A communication system operating within a public safety network includes a cultural analytics engine configured to receive a video feed from a security camera system or a portable public safety communication device operating within the system. The cultural analytics engine performs primary aggressive behavior video analytics detection on the video feed to detect potential aggressive behavior within the video feed. The analytics engine further performs secondary cultural exception analytics on the video feed to determine whether a cultural exception to the behavior is detected. Audio verification is performed on identified potential exceptions. In response to no cultural exception being detected, an alert is generated indicative of a public safety incident, and in response to a cultural exception being detected, no alert is sent
Abstract:
A rotary control (102) having an antenna radiating element (202) integrated therein is provided. The rotary control (102) is formed of a knob housing (112) providing an axis of circumferential rotation (120). The antenna radiating element (202) is rotatable along the axis of circumferential rotation (120) in response to rotation of the knob housing (112). The antenna radiating element (202) is coupled to a rotatable antenna feed electrode (230). The rotary control (102) having the integrated antenna radiating element (202) may be mounted to a communication device housing having a stationary capacitive feed electrode (220). The stationary capacitive feed electrode (220) and rotatable antenna feed electrode (230) provide capacitive coupling for the transfer of RF signals to and from antenna radiating element (202) regardless of the position of rotation of the knob housing (112).
Abstract:
An antenna includes a ground support, an electrically conductive, endless element mounted at a distance relative to the ground support, and a trio of ports arranged along the endless element for conveying radio frequency signals in an operating band of frequencies. The antenna is compact and has high port isolation and low pattern correlation due to successively spacing the ports apart along the endless element by a spacing of one-half of a guided wavelength at a center frequency of the operating band.
Abstract:
An antenna system for a portable wireless communication device is provided having a first antenna and a second antenna, the first and second antennas being proximally located causing electromagnetic coupling therebetween. An isolator is coupled with the first and second antennas and the first and second RF transceivers at respective interface ports. The isolator Comprises a radio frequency (RF) coupler featuring four RF coupler ports. The four RF coupler ports are coupled to respective phasor-shaping networks at each of the four RF coupler ports. The first and second RF transceivers operate independently in respective frequency bands.
Abstract:
An antenna (100) enables improved multi-band operation for a portable communication device, such as a portable two-way radio. The antenna structure is formed of a first radiator element (104) fed through a single radio frequency (RF) feed port (118) and terminated on the input of a transmission line (108). The transmission line (108) is routed along a ground plane reference mass (102) towards a second radiator element (106). Applying the antenna structure to a radio embodiment, the first radiator element (104) is placed at a bottom side of a portable radio device, the first radiator element being fed through the single RF feed port and terminated on the input of the transmission line. The transmission line is routed along the ground plane reference mass towards the second radiator element placed on a top side of the portable radio.
Abstract:
A hybrid antenna structure allows the antenna to be used internally or mostly internally in a portable radio communication device operating in the VHF range. The hybrid antenna structure includes a switching circuit that connects an RF circuit to one of several points along the length of a wrapped conductor element, depending on the selected operating frequency. An inductive matching tail element is adjustably tuned to match the selected tap point on the wrapped conductor for the selected operating frequency.
Abstract:
An antenna (100) with an embedded wideband matching substrate (102) is provided. The substrate (102) comprises impedance matching circuitry (300) providing a low frequency (LF) matching circuit (330) and a high frequency (HF) matching circuit (340) for tri-band operation. A stripline (314) having a stripline ground (324) is disposed on the substrate. The stripline (314) provides a matching element and the stripline ground (324) provides a common ground (324) for both the HF and LF matching circuits. The substrate (102) is shaped with a tabular portion (106) which facilitates encasing the substrate (102) within a casing (118). The tabular portion (106) further provides an alignment feature for wrapping of a flexible radiating element about the casing and flexible antenna rod (126) to complete the antenna structure (100).