Abstract: An antenna device includes a power feeding portion; and an antenna including first and second antenna parts, and an amplifier each electrically connected to the power feeding portion. The first antenna part includes a first element including a part extending in a first direction, and a first loop element connected to an end of the first element. The second antenna part includes a second element including a part extending in the first direction, and a second loop element connected to an end of the second element. The first loop element includes a part extending in the first direction, and a part extending in the second direction different from the first direction. The second loop element includes a part extending in the first direction, and a part extending in a third direction opposite to the second direction. The first and second loop elements are positioned apart from each other.

Abstract: An antenna device includes a power feeding portion; and an antenna including first and second antenna parts, and an amplifier each electrically connected to the power feeding portion. The first antenna part includes a first element including a part extending in a first direction, and a first loop element connected to an end of the first element. The second antenna part includes a second element including a part extending in the first direction, and a second loop element connected to an end of the second element. The first loop element includes a part extending in the first direction, and a part extending in the second direction different from the first direction. The second loop element includes a part extending in the first direction, and a part extending in a third direction opposite to the second direction. The first and second loop elements are positioned apart from each other.

Abstract: A window glass for a vehicle includes a glass plate; a dielectric having a first surface on a side facing the glass plate, and a second surface; a first electrode arranged between the glass plate and the first surface; a second electrode arranged on the second surface side such that the dielectric is interposed between the first and second electrodes; and an antenna element arranged between the glass plate and the first surface, and connected to the first electrode, the antenna element receiving at least an electromagnetic wave in a frequency band of AM broadcasting, and a coupling capacitance between the first and second electrodes satisfying a condition determined by an antenna capacitance of the antenna element, an input capacitance of an amplifier connected to the second electrode, a voltage value output from the second electrode, and a reception voltage value of the antenna element.

Abstract: A window glass for vehicle includes a glass plate having a transmissive region transmitting visible light, and a light shielding film shielding visible light; a dielectric having a first surface and a second surface; a planar conductor arranged between the glass plate and the first surface of the dielectric; positive and negative electrodes connected to the planar conductor; one or more feeding electrodes and one or more grounding electrodes arranged on the second surface of the dielectric. The planar conductor generates heat by an electric voltage applied between the positive and negative electrodes. The feeding electrodes and the grounding electrodes are arranged to face the planar conductor via the dielectric so that the planar conductor receives at least electromagnetic waves of a VHF band. The positive electrode, the negative electrode, the feeding electrodes and the grounding electrodes are arranged to overlap with the light shielding film in a planar view.

Abstract: A window glass for a vehicle includes a glass plate; a dielectric having a first surface on a side facing the glass plate, and a second surface; a first electrode arranged between the glass plate and the first surface; a second electrode arranged on the second surface side such that the dielectric is interposed between the first and second electrodes; and an antenna element arranged between the glass plate and the first surface, and connected to the first electrode, the antenna element receiving at least an electromagnetic wave in a frequency band of AM broadcasting, and a coupling capacitance between the first and second electrodes satisfying a condition determined by an antenna capacitance of the antenna element, an input capacitance of an amplifier connected to the second electrode, a voltage value output from the second electrode, and a reception voltage value of the antenna element.

Abstract: Disclosed is an antenna system including a glass antenna that is disposed in window glass that is installed in a window opening that is formed in a metal body of a vehicle, wherein the glass antenna is to receive a radio wave in a MF band or in a LF band; an in-vehicle antenna that is disposed at an inner side of the vehicle compared to the metal body of the vehicle, wherein the in-vehicle antenna is positioned in a vicinity of the glass antenna; and a canceler to cancel a noise signal of the in-vehicle antenna in a received signal of the glass antenna.

Abstract: An antenna system includes a first antenna to receive a broadcast wave in a predetermined frequency band; a second antenna to receive noise from a noise source; and a canceler to cancel a noise signal received by the second antenna from a received signal received by the first antenna, wherein a radio wave of the broadcast wave in the predetermined frequency band equally reaches the first antenna and the second antenna, wherein reception gain for the predetermined frequency band received by the second antenna is lower than reception gain for the predetermined frequency band received by the first antenna, and wherein an output of the noise received by the first antenna is adjusted to be equal to an output of the noise received by the second antenna.

Abstract: The present invention relates to an antenna including: a resin-made member to be attached to a vehicle body; an antenna element which is provided in the resin-made member and has a first length capable of resonating with a first frequency band; and a passive element which is provided in the resin-made member, capacitively coupled with the antenna element via a capacitive coupling portion, and has at least a region of a second length capable of resonating with a second frequency band which is different from the first frequency band by combining the second length with the first length of the antenna element.

Abstract: An antenna system includes a first antenna to receive a broadcast wave in a predetermined frequency band; a second antenna to receive noise from a noise source; and a canceler to cancel a noise signal received by the second antenna from a received signal received by the first antenna, wherein a radio wave of the broadcast wave in the predetermined frequency band equally reaches the first antenna and the second antenna, wherein reception gain for the predetermined frequency band received by the second antenna is lower than reception gain for the predetermined frequency band received by the first antenna, and wherein an output of the noise received by the first antenna is adjusted to be equal to an output of the noise received by the second antenna.

Abstract: Disclosed is an antenna system including a glass antenna that is disposed in window glass that is installed in a window opening that is formed in a metal body of a vehicle, wherein the glass antenna is to receive a radio wave in a MF band or in a LF band; an in-vehicle antenna that is disposed at an inner side of the vehicle compared to the metal body of the vehicle, wherein the in-vehicle antenna is positioned in a vicinity of the glass antenna; and a canceler to cancel a noise signal of the in-vehicle antenna in a received signal of the glass antenna.

Abstract: In a high frequency wave glass antenna for an automobile, wherein an antenna conductor and an antenna-conductor-side feeding electrode connected to the antenna conductor are provided to a laminated glass sheet for an automobile, the laminated glass sheet comprising two glass sheets bonded through a bonding layer, and wherein a receiver-side feeding electrode is disposed at a position to confront the antenna-conductor-side feeding electrode and on a car-interior-side surface of the laminated glass; each of the antenna-conductor-side feeding electrode and the receiver-side feeding electrode has an area of from 140 to 2,500 mm2.

Abstract: A plurality of heating wires 2 have a plurality of detours 1 formed therein, the heating wires 2 have inlets 10 formed therein for connection with the detours 1, and both ends of each of the inlets 10 and both ends of each of the detours 1 are connected by a pair of connection lines 9. When a shorter one of the shortest spacing between the paired connection lines 9 and the shortest spacing between both ends of the inlets 10 is called We, when the maximum width of the detours 1 in a horizontal direction is called Wr, when a received frequency has a wavelength of ?0 in the air, and when the formula of {(Wr?We)/2}=L1 is established, the formula of L1?0.0053·?0 is satisfied.

Abstract: An antenna conductor includes a first antenna element 1, a second antenna element 2, a first connecting conductor 3 and a loop-forming element 6; the first antenna element 1, the second antenna element 2 and the first connecting conductor 3 form a conductor pattern in a U-character shape; the first antenna element 1 is connected to a feeding electrode 8 through a second connecting conductor 4; and the first antenna element 1, the first connecting conductor 3 and the loop-forming element 6 form a loop.

Abstract: A plurality of heating wires 2 have a plurality of detours 1 formed therein, the heating wires 2 have inlets 10 formed therein for connection with the detours 1, and both ends of each of the inlets 10 and both ends of each of the detours 1 are connected by a pair of connection lines 9. When a shorter one of the shortest spacing between the paired connection lines 9 and the shortest spacing between both ends of the inlets 10 is called We, when the maximum width of the detours 1 in a horizontal direction is called Wr, when a received frequency has a wavelength of ?0 in the air, and when the formula of {(Wr?We)/2}=L1 is established, the formula of L1?0.0053·?0 is satisfied.

Abstract: In a high frequency wave glass antenna for an automobile, wherein an antenna conductor and an antenna-conductor-side feeding electrode connected to the antenna conductor are provided to a laminated glass sheet for an automobile, the laminated glass sheet comprising two glass sheets bonded through a bonding layer, and wherein a receiver-side feeding electrode is disposed at a position to confront the antenna-conductor-side feeding electrode and on a car-interior-side surface of the laminated glass; each of the antenna-conductor-side feeding electrode and the receiver-side feeding electrode has an area of from 140 to 2,500 mm2.