Abstract: The present invention is related to a coupled-fed multi-band loop antenna. The antenna comprises a dielectric substrate, a ground plane located on the dielectric substrate and has a grounding point, a radiating portion which comprise a supporter, a coupling trip and a loop strip, and a matching circuit. The coupling strip and loop strip are both located on the supporter, with the coupling strip surrounded by the loop strip. The length of loop strip is about 0.25 wavelength of the antenna's first resonant mode. The loop strip has a first end paralleling with the coupling loop, a second end and a shorting point near the second end and electrically connected to the grounding point on the ground plane. The matching circuit is on the dielectric substrate. One terminal of the matching circuit is connected to the coupling strip, and the other is connected to a signal source.

Abstract: The present invention relates to a multiband folded loop antenna comprising a dielectric substrate, a ground plane, a radiating portion and a matching circuit. The ground plane is located on the dielectric substrate and has a grounding point. The radiating portion comprises a supporter, a loop strip, and a tuning patch. The loop strip has a length about a half-wavelength of the central frequency of the antenna's first resonant mode. The loop strip has a feeding end and a grounding end, with the grounding end electrically connected to the grounding point on the ground plane. The loop strip is folded into a three-dimensional structure and is supported by the supporter. The tuning patch is electrically connected to the loop strip. The matching circuit is located on the dielectric substrate with one terminal electrically connected to the feeding end of the loop strip and another terminal to a signal source.

Abstract: A dual-band loop antenna for using in a mobile phone for (890˜960 MHz)/DCS(1710˜1880 MHz) application is disclosed to include a ground plane in a substantially rectangular shape having a grounding point and a shorting point, a radiating metallic loop having a feeding end and a shorting end electrically connected to the shorting point of the ground plane and spaced from the feeding end at a predetermined distance, and a radiating metallic plate surrounded by the radiating metallic loop and having one end electrically connected to a vicinity around the shorting end of the radiating metallic loop and spaced from the shorting end of the radiating metallic loop at a distance less than 10 mm.

Abstract: A multi-band antenna, it comprises: a grounding surface, a supporting base and a radiative metallic portion; the grounding surface has a first shorting point and a second shorting point; the radiative metallic portion is attached to a bottom surface of the supporting base, and includes: a first radiative metallic wire, a radiative metallic sheet, a second radiative metallic wire and a parasitic radiative metallic arm.

Abstract: The present invention is related to a coupled-fed multi-band loop antenna. The antenna comprises a dielectric substrate, a ground plane located on the dielectric substrate and has a grounding point, a radiating portion which comprise a supporter, a coupling trip and a loop strip, and a matching circuit. The coupling strip and loop strip are both located on the supporter, with the coupling strip surrounded by the loop strip. The length of loop strip is about 0.25 wavelength of the antenna's first resonant mode. The loop strip has a first end paralleling with the coupling loop, a second end and a shorting point near the second end and electrically connected to the grounding point on the ground plane. The matching circuit is on the dielectric substrate. One terminal of the matching circuit is connected to the coupling strip, and the other is connected to a signal source.

Abstract: The present invention relates to a multiband folded loop antenna comprising a dielectric substrate, a ground plane, a radiating portion and a matching circuit. The ground plane is located on the dielectric substrate and has a grounding point. The radiating portion comprises a supporter, a loop strip, and a tuning patch. The loop strip has a length about half wavelength of the antenna's lowest resonant frequency. The loop strip has a feeding end and a grounding end, with the grounding end electrically connected to the grounding point on the ground plane. The loop strip is folded into a three-dimensional structure and is supported by the supporter. The tuning patch is electrically connected to the loop strip. The matching circuit is located on the dielectric substrate with one terminal electrically connected to the feeding end of the loop strip and another terminal to a signal source.

Abstract: A broadband antenna includes a dielectric substrate, a radiation conductor and a feeding gap. The radiation conductor is disposed on the dielectric substrate and has a first side and a second side. The first side is adjacent to the second side, and the first side is longer than the second side. The second side has a first feeding point and a second feeding point. The feeding gap has a first end located at the first side and a second end located at the second side. The feeding gap divides the radiation conductor into a first sub-radiation conductor and a second sub-radiation conductor. The first feeding point is located on the first sub-radiation conductor and the second feeding point is located on the second sub-radiation conductor.

Abstract: A multi-band antenna, it comprises: a grounding surface, a supporting base and a radiative metallic portion; the grounding surface has a first shorting point and a second shorting point; the radiative metallic portion is attached to a bottom surface of the supporting base, and includes: a first radiative metallic wire, a radiative metallic sheet, a second radiative metallic wire and a parasitic radiative metallic arm.

Abstract: A dual-band loop antenna for using in a mobile phone for (890˜960 MHz)/DCS(1710˜1880 MHz) application is disclosed to include a ground plane in a substantially rectangular shape having a grounding point and a shorting point, a radiating metallic loop having a feeding end and a shorting end electrically connected to the shorting point of the ground plane and spaced from the feeding end at a predetermined distance, and a radiating metallic plate surrounded by the radiating metallic loop and having one end electrically connected to a vicinity around the shorting end of the radiating metallic loop and spaced from the shorting end of the radiating metallic loop at a distance less than 10 mm.

Abstract: A receiving antenna for digital television signal reception includes a dielectric substrate, a radiating plate formed on the dielectric substrate with a bar shape, having a first long edge and a second long edge corresponding to the first long edge, a slit formed on the radiating plate with a length at least two times the width of the radiating plate, having a terminal at about the center of the first long edge and a terminal at the second long edge, and separating the radiating plate into a first sub-plate and a second sub-plate, a first feeding point formed on the first sub-plate, a second feeding point formed on the second sub-plate, and a feeding coaxial cable having a core conductor connected to the first feeding point and a grounding conductor connected to the second feeding point.

Abstract: A dual-band loop antenna comprising: a grounding plane, a radiation metallic loop and a radiation metallic plate, the shape of the grounding plane is generally rectangular having a grounding point and a shorting point; the radiation metallic loop has a feeding end and a shorting end, the shorting end is electrically connected to the shorting point on the grounding plane; while the radiation metallic plate is encircled by the radiation metallic loop, and one terminal point of the radiation metallic plate is electrically connected to the vicinity of the shorting end of the radiation metallic loop. The embodiments of antennas of the present invention suit designing of antennas for mobile phones using the bands of GSM (890˜960 MHz)/DCS (1710˜1880 MHz).

Abstract: A broadband antenna includes a dielectric substrate, a radiation conductor and a feeding gap. The radiation conductor is disposed on the dielectric substrate and has a first side and a second side. The first side is adjacent to the second side, and the first side is longer than the second side. The second side has a first feeding point and a second feeding point. The feeding gap has a first end located at the first side and a second end located at the second side. The feeding gap divides the radiation conductor into a first sub-radiation conductor and a second sub-radiation conductor. The first feeding point is located on the first sub-radiation conductor and the second feeding point is located on the second sub-radiation conductor.

Abstract: A receiving antenna for digital television signal reception includes a dielectric substrate, a radiating plate formed on the dielectric substrate with a bar shape, having a first long edge and a second long edge corresponding to the first long edge, a slit formed on the radiating plate with a length at least two times the width of the radiating plate, having a terminal at about the center of the first long edge and a terminal at the second long edge, and separating the radiating plate into a first sub-plate and a second sub-plate, a first feeding point formed on the first sub-plate, a second feeding point formed on the second sub-plate, and a feeding coaxial cable having a core conductor connected to the first feeding point and a grounding conductor connected to the second feeding point.