Abstract: A communication device and a method for enhancing impedance bandwidth of an antenna are provided. The communication device includes at least one ground, at least one antenna, a current-drawing conductor structure, and at least one coupling conductor structure. The antenna is electrically connected to the ground through a source and generates at least one operating frequency band for transmitting or receiving electromagnetic signals of at least one communication band. The current-drawing conductor structure includes a plurality of conductor elements, where there is at least one mutual coupling portion formed between neighboring conductor elements. The coupling conductor structure has a first conductor portion and a second conductor portion. One end of the first conductor portion is electrically connected to the ground, and another end thereof is electrically connected to the second conductor portion.

Abstract: A multi-band multi-antenna system and a communication device thereof are provided. The multi-band multi-antenna system includes at least one ground, two antenna units, a coupling conductor line and a grounding conductor line. Both of the two antenna units have at least one conductor portion, a low-pass filtering portion and an extending conductor portion. Each antenna unit generates at least one higher and lower operating bands. The low-pass filtering portion is electrically coupled between the conductor portion and the extending conductor portion, and effectively decreases dependent relationship between the higher and lower operating bands. The coupling conductor line is disposed nearby the two antenna units and has a first coupling portion and a second coupling portion. The grounding conductor line is disposed between the two antenna units and connected to the ground.

Abstract: A dielectric antenna includes at least one dielectric unit. Each dielectric unit is separated into a first region and a second region, and the second region could have a bending portion. A conductor covers a surface of the second region of the dielectric unit to form a waveguide structure. The waveguide structure has a first endpoint connected to the first region and a second endpoint serving as a signal feeding terminal for feeding or receiving signals.

Abstract: A multi-antenna system including a substrate, a ground element, a first antenna element, a second antenna element and a decoupling element is provided. The ground element is disposed on a first surface of the substrate, and the decoupling element is disposed on a second surface of the substrate. Ground portions of the two antenna elements and a first connection terminal of the decoupling element are electrically connected to the ground element. The decoupling element is spaced a first decoupling distance from a part of the first ground portion, and the decoupling element is spaced a second decoupling distance from a part of the second ground portion. A phase difference relative to the two antenna elements is generated by the decoupling element, the first decoupling distance and the second decoupling distance so as to eliminate interference energy between the two antenna elements.

Abstract: A radiation pattern insulator and an antennae system thereof are proposed. The radiation pattern insulator includes a dielectric substrate and a plurality of radiation pattern insulation elements. The dielectric substrate allocated between a plurality of antennae includes a top surface and a bottom surface, and a normal direction of the dielectric substrate is substantially perpendicular to propagation directions of electromagnetic waves radiated from the antennae. In addition, the radiation pattern insulation elements are allocated on the top surface or the bottom surface of the dielectric substrate, or alternatively, all allocated on the top surface and the bottom surface.

Abstract: An antenna structure with reconfigurable patterns includes a grounded plane, at least one active antenna, and at least one current dragger. The active antenna is disposed adjacent to a side of the grounded plane, while the current dragger is disposed adjacent to another side of the grounded plane. The current dragger includes at least one switch. The at least one switch is configured to selectively conduct a current at the grounded plane to the current dragger or electrically insulate a current at the grounded plane from the current dragger.

Abstract: A communication device including a ground plane and an antenna element is provided. An edge of the ground plane is embedded with a notch, which has at least a first edge and a second edge. The antenna element, disposed at the notch, has at least a first operating frequency band and a second operating frequency band. The antenna element includes a first conductive portion and a second conductive portion. The first conductive portion has a starting terminal, electrically coupled to the first edge of the notch through a signal source, as a feeding terminal of the antenna element. A capacitive coupling portion is formed between an end terminal of the first conductive portion and the ground plane. The second conductive portion has a shorting terminal electrically coupled or connected to the second edge of the notch.

Abstract: An electromagnetic transmission apparatus comprises a plurality of electromagnetic coupling elements, wherein each electromagnetic coupling element has at least one resonant structure. The plurality of electromagnetic coupling elements are arranged that when the electromagnetic transmission apparatus is operated within a specific frequency band, an electromagnetic coupling device near the electromagnetic transmission apparatus within an electromagnetic distance can electromagnetically couple with the electromagnetic transmission apparatus by near-field coupling, and the electromagnetic wave of the electromagnetically coupling propagates along with the arrangement direction of the plurality of electromagnetic coupling elements.

Abstract: A radiation pattern insulator and an antennae system thereof are proposed. The radiation pattern insulator includes a dielectric substrate and a plurality of radiation pattern insulation elements. The dielectric substrate allocated between a plurality of antennae includes a top surface and a bottom surface, and a normal direction of the dielectric substrate is substantially perpendicular to propagation directions of electromagnetic waves radiated from the antennae. In addition, the radiation pattern insulation elements are allocated on the top surface or the bottom surface of the dielectric substrate, or alternatively, all allocated on the top surface and the bottom surface.

Abstract: A multi-band multi-antenna system and a communication device thereof are provided. The multi-band multi-antenna system includes at least one ground, two antenna units, a coupling conductor line and a grounding conductor line. Both of the two antenna units have at least one conductor portion, a low-pass filtering portion and an extending conductor portion. Each antenna unit generates at least one higher and lower operating bands. The low-pass filtering portion is electrically coupled between the conductor portion and the extending conductor portion, and effectively decreases dependent relationship between the higher and lower operating bands. The coupling conductor line is disposed nearby the two antenna units and has a first coupling portion and a second coupling portion. The grounding conductor line is disposed between the two antenna units and connected to the ground.

Abstract: A multiband antenna having a ground plane and a radiating portion is provided. The radiating portion includes a first metal portion, a second metal portion, an inductively-coupled portion, and a third metal portion. The first metal portion has a first coupling metal portion and a signal feeding line electrically connected thereto. The second metal portion has a second coupling metal portion and a shorting metal portion electrically connected thereto with a shorting point connected to the ground plane. The first and second coupling metal portions are coupled and a capacitively-coupled portion is formed therebetween. The inductively-coupled portion is connected between the third and second metal portions. The first and second metal portions enable the antenna to generate a first operating band. The first, second and third metal portions enable the antenna to generate a second operating band, the frequencies of which are lower than those of the first operating band.

Abstract: A structure for adjusting electromagnetic wave (EM wave) penetration response includes a plurality of structure units and a dielectric substrate with an upper surface and a lower surface. The structure units are disposed on the upper surface and/or the lower surface. The structure unit consists of metal lines or complementary slits so as to enable an EM wave penetration response of the structure to include a pass band and a stop band. The frequency of the stop band is higher than that of the pass band. If a distance between the structure and an object with a high dielectric constant is longer than a predetermined distance, the pass band covers a radiation frequency of an antenna. If the distance between the structure and the object with the high dielectric constant is within the predetermined distance, the stop band covers the radiation frequency of the antenna.

Abstract: A dielectric antenna includes at least one dielectric unit. Each dielectric unit is separated into a first region and a second region, and the second region could have a bending portion. A conductor covers a surface of the second region of the dielectric unit to form a waveguide structure. The waveguide structure has a first endpoint connected to the first region and a second endpoint serving as a signal feeding terminal for feeding or receiving signals.

Abstract: A mobile communication device includes a ground plane and an antenna. The antenna is disposed on a dielectric substrate and includes a radiating metal portion, a coupling metal portion, and an inductive shorting metal portion. The radiating metal portion provides a resonant path for the antenna to generate first and second operating bands. The coupling metal portion is coupled to the radiating metal portion to form a first coupling portion and is connected to a source through a connecting metal strip. One end of the inductive shorting metal portion is electrically connected to the radiating metal portion, and the other end is electrically connected to the ground plane. The inductive shorting metal portion includes a first fractional section coupled to the radiating metal portion to form a second coupling portion, and a second fractional section coupled to the coupling metal portion to form a third coupling portion.

Abstract: A dual polarization antenna radome includes a plurality of dielectric substrates. Each dielectric substrate provides a plurality of metal totems, and the pattern of the metal totems is unchanged after the metal totems rotate by 90 degrees around the axis perpendicular to the dielectric substrate.

Abstract: An antenna structure comprises a substrate having a first surface and a second surface, an array of conductor units positioned on the first surface and including at least two conductor units which are coupled, and at least one load metal sheet positioned on at least one of the first surface or the second surface. Each of the conductor units includes an intervening material with two conductors positioned on opposite surfaces of the intervening material.

Abstract: A communication device and a method for enhancing impedance bandwidth of an antenna are provided. The communication device includes at least one ground, at least one antenna, a current-drawing conductor structure, and at least one coupling conductor structure. The antenna is electrically connected to the ground through a source and generates at least one operating frequency band for transmitting or receiving electromagnetic signals of at least one communication band. The current-drawing conductor structure includes a plurality of conductor elements, where there is at least one mutual coupling portion formed between neighboring conductor elements. The coupling conductor structure has a first conductor portion and a second conductor portion. One end of the first conductor portion is electrically connected to the ground, and another end thereof is electrically connected to the second conductor portion.

Abstract: A photovoltaic apparatus, through which an antenna is allowed to transmit and receive radio-frequency signals, includes a photovoltaic material and conducting electrodes. The photovoltaic material is used for converting photon energy into electrical energy, and the conducting electrodes collect and transfer the electrical energy generated by the photovoltaic material. The arrangement of the conducting electrodes forms a frequency selective surface placed in the transmitting or receiving path of the antenna. The frequency selective surface and the antenna have a spacing there between. The projection of the frequency selective surface in the transmitting or receiving path of the antenna covers the antenna.

Abstract: According to an embodiment of the present invention, an electromagnetic radiation apparatus includes a ground plane and an integrally formed antenna structure. The integrally formed antenna structure may include a radiation plate perpendicular to or with an angle larger than 45 degrees to the ground plane and a shielding structure configured to restrict radiation of the radiation plate.

Abstract: An antenna radome is provided. The antenna radome comprises an antenna radome substrate and a unit cell. The unit cell is formed on a surface of the antenna radome substrate, and the unit cell is perpendicular to a magnetic field direction of an antenna. The unit cell comprises a plurality of conductors.