A filter assembly operating at wider passband with an enhanced reflection coefficient is provided herein. In certain embodiments, the filter assembly comprises a first filter configured to allow signals received via an antenna node to pass at a first passband, the first filter including a plurality of resonators connected in series and parallel arms, the plurality of resonators of the first filter including a first type of resonator configured to broaden the first passband, at least a series resonator nearest to the antenna node or a shunt resonator nearest to the antenna node among the plurality of resonators of the first filter being a second type of resonator configured to improve reflection characteristics at a stopband of the first filter, and a second filter configured to allow the signals received via the antenna node to pass at a second passband using the second type of resonators.

A wearable device which is mountable on a wrist of a user includes a housing including a metal structure, a display positioned within the housing, wherein the display includes a metal layer positioned within the metal structure and spaced apart from the metal structure by a given gap, a printed circuit board (PCB) positioned within the housing and including a ground region, and a control circuit positioned on the PCB and configured to feed a first point of the metal structure. The metal layer is electrically connected with the ground region of the PCB at a second point spaced from the first point by a given angle.

The present disclosure relates to a dual-polarized antenna comprising a dipole radiator, a resonant cavity radiator and a reflector. The resonant cavity radiator is arranged below the reflector and radiates through a slot in the reflector, and the dipole radiator is arranged above the reflector, with a signal line and/or a carrier of the dipole radiator extending through the slot.

The present disclosure relates to a dual-polarized antenna comprising a dipole radiator, a resonant cavity radiator and a reflector. The resonant cavity radiator is arranged below the reflector and radiates through a slot in the reflector, and the dipole radiator is arranged above the reflector, with a signal line and/or a carrier of the dipole radiator extending through the slot.

An RFID module includes a laminated body including thermoplastic resin layers, a passive element defined by a conductor pattern on the thermoplastic resin layers, and an RFID IC chip embedded in the laminated body. The RFID IC chip and the conductor pattern are connected to each other by joining an input and output terminal of the RFID IC chip and a pad electrode, and an insulator pattern overlapping the pad electrode is provided around the RFID IC chip in the laminated body in planar view.

A long-distance radio frequency electronic identification tire structure is provided. When the production of the tire is completed and an electronic tag reading device is used for identification, an RFID chip of an ultra high frequency electronic tag of a main tire body receives and sends an electromagnetic wave signal generated by a far-field copper film antenna and the electronic tag reading device. The frequency band and the bandwidth of the electromagnetic wave signal are adjusted by a frequency band/bandwidth adjustment portion, and first and second field effect adjustment grooves of first and second field effect adjustment portions are configured to adjust the field effect when a tire bead bundle and a steel belt layer reflect the electromagnetic wave signal, so that the electronic tag reading device can read the identification code of the ultra high frequency electronic tag at a wide angle and a long distance.

An antenna comprises a first antenna element, a second antenna element and a fractal element having a first fractal element end, a central fractal element length and a second fractal element end. The first antenna element, the second antenna element and the fractal element are situated in a tapered slot antenna pair configuration along a longitudinal axis. The fractal element is directly coupled to, and forms an electrical connection between, the first antenna element and the second antenna element at a location between a lowest operating frequency phase center and the launch end. The first fractal element end is coupled to the first antenna element. The second fractal element end is coupled to the second antenna element. The central fractal element length is disposed so as to be non-parallel with the longitudinal axis.

Implementations of antennas may include a meandering T-matching structure, a first meandering feed line coupled to the meandering T-matching structure, and a first radiating part coupled to the first meandering feed line. Implementations may include a second meandering feed line coupled to the meandering T-matching structure, and a second radiating part coupled to the meandering feed line. A gap may physically separate the first meandering feed line and the second meandering feed line.

Implementations of antennas may include a meandering T-matching structure, a first meandering feed line coupled to the meandering T-matching structure, and a first radiating part coupled to the first meandering feed line. Implementations may include a second meandering feed line coupled to the meandering T-matching structure, and a second radiating part coupled to the meandering feed line. A gap may physically separate the first meandering feed line and the second meandering feed line.

A device includes a first antenna arranged on a substrate, with the first antenna comprising a first semiconductor layer having terahertz-wave gain and a first conductor layer, a second antenna arranged on the substrate, with the second antenna comprising a second semiconductor layer having terahertz-wave gain and a second conductor layer, and a third conductor layer arranged on the substrate and electrically connecting the first antenna and the second antenna. A shunt device is arranged on the substrate and electrically connected to the third conductor layer. In planar view, the shunt device does not overlap with at least the first conductor layer.