Abstract: An antenna device (10) is disposed on a substrate (30), and includes a feed part (14), a holder (20), a body part (18), at least one ground plane (11), and a matching part (16). The feed part is for feeding electromagnetic signals. The body part for radiating and receiving the electromagnetic signals is electronically connected to the feed part. The body part includes at least two radiation parts electronically connected in sequence and disposed on at least two adjacent surfaces of the holder. The at least one ground plane for grounding is disposed on one side of the substrate. The matching part for impendence matching includes one end electronically connected to the body part and another end electronically connected to the ground plane. The ground plane surrounds two adjacent sides of the matching part.

Abstract: A monopole antenna (10) includes a feed wire (14), a radiation part (18), and a matching part (16). The feed wire is formed on a clear portion of a substrate for feeding electromagnetic signals. The radiation part is connected to the feed wire for radiating and receiving electromagnetic signals, and includes a first radiation part (180) and a second radiation part (182). The second radiation part is connected to the first radiation part, the first radiation part is formed on a first plane, and the second radiation part is formed on a second plane intersecting the first plane. The matching part is connected to the radiation part for impedance matching.

Abstract: An antenna device disposed on a substrate includes a feed part, a body part, at least one ground plane, and a matching part. The feed part is for feeding electromagnetic signals. The body part for radiating and receiving the electromagnetic signals is electronically connected to the feed part. The body part includes a first radiation part located on a first plane, a second radiation part located on a second plane, and a third radiation part located on a third plane. The second radiation part is electronically connected between the first radiation part and the third radiation part. The ground plane for grounding is disposed on one surface of the substrate. The matching part for impedance matching includes one end electronically connected to one end of the body part and one end of the feed part, and another end electronically connected to the ground plane.

Abstract: A wireless communication device (10) includes an antenna (12), an electronic element (14), and a support member (18). The antenna for radiating and receiving electromagnetic signals is disposed on one side of the electronic element. The support member includes at least one support portion disposed between the antenna and the electronic element to form a space for spacing the antenna and the electronic element to enhance the radiation efficiency of the antenna.

Abstract: An ultra-wideband (UWB) antenna (10), disposed on a substrate (30), includes a body (100), a feeding part (160), and at least one first ground plane (120). The body, for receiving and transmitting electromagnetic signals, includes a first radiating part (102) and a second radiating part (104) connected to the first radiating part. The body defines a gap (106) between the first radiating part and the second radiating part. The feeding line, electrically connected to the body, feeds electromagnetic signals to the body. The at least one first ground plane is disposed on a side of the feeding part, and is grounded.

Abstract: A printed antenna disposed on a substrate (20), includes a radiation part (10), a feed line (14), and at least one first ground part (16). The radiation part is for radiating and receiving electromagnetic signals, and includes a hollow portion (100) and a pair of openings (120). The hollow portion is defined in the radiation part. The openings are formed at two edges of the radiation part. The feed line for feeding the electromagnetic signals to the radiation part is electrically connected to the radiation part. The at least one first ground part for grounding is disposed at one side of the feed line.

Abstract: A dual-band antenna (10) is provided. The dual-band antenna printed on a substrate (30) includes a transmission portion (120), a first radiator (140), a second radiator (160), a first grounded portion (180), and a second grounded portion (190). The transmission portion is used for feeding electromagnetic signals. The first radiator is electronically connected to the transmission portion for transceiving electromagnetic signals with a first frequency. The second radiator is electronically connected to the transmission portion for transceiving electromagnetic signals with a second frequency. The first grounded portion is disposed on a first surface of the substrate. The second grounded portion is disposed on a second surface of the substrate. A length of the second grounded portion is greater than that of the first grounded portion. An antenna assembly is also provided in the present invention.

Abstract: A printed antenna includes a radiation part (10) for radiating and receiving electromagnetic signals, a feed wire (30) for feeding the electromagnetic signals to the radiation part, a matching part (20) for impedance matching, and a ground plane (40). The radiation part includes a first radiation segment (12), a second radiation segment (14), and a third radiation segment (16). The second radiation segment is electrically connected to the first radiation segment and the third radiation segment. The feed wire is electrically connected to the radiation part. The matching part is electrically connected to the radiation part and the ground plane. The second radiation segment and the matching part extend from the first radiation segment to a same side of the first radiation segment.

Abstract: A band-pass filter (10) includes a first resonator (140), a second resonator (160), a third resonator (180), an input part (100), and an output part (120). The input part is for receiving electromagnetic signals. The first resonator is electronically connected to the input part, and includes a first groove (1400). The second resonator is parallel to the first resonator, and includes a second groove (1600). The third resonator is disposed between and parallel to the first resonator and the second resonator, and includes a third groove (1800). The output part is electronically connected to the second resonator, and is for transmitting the electromagnetic signals from the second resonator. The band-pass filter not only has a smaller profile, but also effectively reduces discontinuity losses.

Abstract: A micro band-pass filter includes a first capacitor, a first resonator, a second capacitor, a second resonator, a third capacitor, a third resonator, an input portion, and an output portion. The first, second, and third resonators all have one end grounded, and have another end connected to the first capacitor, the second capacitor, and the third capacitor, respectively. The second resonator is disposed parallel to the first resonator. The third resonator is disposed between the first resonator and the second resonator and parallel thereto. The input portion connected to the first resonator is for inputting electromagnetic signals thereto. The output portion is electronically connected to the second resonator for outputting electromagnetic signals therefrom. The first capacitor and the second capacitor are disposed at one side of the filter, and the third capacitor is disposed at an opposite side of the filter.

Abstract: A band-pass filter (10) includes a first resonator (140), a second resonator (160), a third resonator (180), an input part (100), and an output part (120). The input part is for receiving electromagnetic signals. The first resonator is electronically connected to the input part. The second resonator is parallel to the first resonator. The output part electronically connected to the second resonator, for transmitting the electromagnetic signals from the second resonator. The third resonator is disposed between the first resonator and the second resonator, and parallel to and offset from the first resonator and the second resonator. Each of the first resonator, the second resonator, and the third resonator has an asymmetrical shape. This structure of the band-pass filter not only has a smaller profile, but also provides a wide frequency range.

Abstract: A dual channel band-pass filter (10) includes an input portion (100), a first resonator (140), a second resonator (160), and an output portion (120). The input portion is used for inputting electromagnetic signals. The first resonator is electronically connected to the input portion, and includes a first groove (146) in the vicinity of a center thereof. The second resonator is disposed parallel to the first resonator, and includes a second groove (166) in the vicinity of a center thereof. The output portion is disposed parallel to the input portion, and is electronically connected to the second resonator for outputting electromagnetic signals.

Abstract: A band-pass filter (10) is provided. The band-pass filter includes an input line (100), an output line (120), a first coupling line (140), a second coupling line (160) and a resonator (180). The input line is used for inputting electromagnetic signals. The output line is used for outputting electromagnetic signals. The first coupling line is electronically connected to the input line. The second coupling line is disposed parallel to the first coupling line, and electronically connected to the output line. The resonator has a groove therein, and is disposed parallel to the first coupling line.

Abstract: A dual-band filter (10) is provided. The dual-band filter includes an input line (100), a first transmission line (140), a second transmission line (160), a third transmission line (180), and an output line (120). The input line is used for inputting electromagnetic signals. The first transmission line is electronically connected to the input line. The second transmission line is arranged parallel to the first transmission line. The third transmission line is arranged between, and parallel to, the first transmission line and the second transmission line. The output line for outputting electromagnetic signals, is arranged parallel to the input line, and is electronically connected to the second transmission line.

Abstract: A low-pass filter (100) for reducing harmonic electromagnetic signals includes an input line (120), an output line (140), a transmission line (160), a first coupling line (180), and a second coupling line (190). The input line is used for input of electromagnetic signals. The output line is used for output of electromagnetic signals. The transmission line is electronically connected to the input line and the output line for capturing and transmitting electromagnetic signals. The first coupling line includes a first open end (182), and a first feed-in end (184) electronically connected to the transmission line. The second coupling line includes a second open end (192), and a second feed-in end (194) electronically connected to the second end. And the first feed-in end is located opposite to the second feed-in end.

Abstract: A band-pass filter (10) for reducing harmonic electromagnetic signals includes an input line (100), an output line (120), at least one first resonator (140), and at least one second resonator (160). The input line inputs electromagnetic signals. The output line outputs electromagnetic signals. The first resonator includes a first grounded end (141), electronically connected to the input line, and a first open end (142). The second resonator is disposed parallel to the first resonator. The second resonator includes a second grounded end (161), electronically connected to the output line, and a second open end (162). The first grounded end is disposed in the same direction as the second grounded end, and the first open end is disposed in the same direction as the second open end.