Abstract: A multi-band antenna includes a lower grounding portion, a feed-in portion, a feeding point, an upper grounding portion, a first extending portion, a second extending portion, a third extending portion, a fourth extending portion, a fifth extending portion, a first branch, a second branch, a third branch and a loop portion. The feed-in portion, the first extending portion, the second extending portion, the third extending portion, the fourth extending portion and the first branch form a first radiation portion. The feed-in portion, the first extending portion, the second extending portion, the third extending portion, the fifth extending portion and the second branch form a second radiation portion. The feed-in portion, the first extending portion, the second extending portion and the third branch form a third radiation portion.

Abstract: An antenna structure includes a substrate, a radiator mounted at one end of a front surface of the substrate, and a grounding element mounted at the other end of the front surface of the substrate. The radiator has a first radiating portion. Two portions of a middle of one end edge of the first radiating portion extend horizontally to form a second radiating portion and a feeding portion. The feeding portion is located above the second radiating portion. A free end of the feeding portion is a feeding end. An upper portion of the other end edge of the first radiating portion extends opposite to the one end edge of the first radiating portion and extends along a rectangular spiral path to form a rectangular spiral third radiating portion.

Abstract: An antenna structure includes a substrate, a radiator mounted at an upper portion of a front surface of the substrate, and a grounding element mounted at a lower portion of the front surface of the substrate. The radiator has a first radiating portion. A lower edge of the first radiating portion extends downward to form a second radiating portion. Two portions of a middle of the lower edge of the first radiating portion extend downward to form a third radiating portion and a feeding portion. A free end of the feeding portion is a feeding end. One side edge of the first radiating portion is recessed inward to form a recess. The grounding element has a first grounding portion and a second grounding portion. The first grounding portion and the second grounding portion are located to two sides of the feeding portion, respectively.

Abstract: A multi-band antenna includes a grounding portion, a feed-in portion, a feeding point, a first radiation portion, a second radiation portion, a third radiation portion and a fourth radiation portion. The feed-in portion has a first end edge, a second end edge, a first side edge and a second side edge. The feeding point is disposed at the feed-in portion. The first radiation portion is extended from the grounding portion. The second radiation portion is extended from the second end edge. The third radiation portion is extended from the first end edge. The fourth radiation portion is extended from an upper portion of the first end edge and an upper portion of the second end edge.

Abstract: A multi-band antenna includes a lower grounding portion, a feed-in portion, a feeding point, an upper grounding portion, a first extending portion, a second extending portion, a third extending portion, a fourth extending portion, a fifth extending portion, a first branch, a second branch, a third branch and a loop portion. The feed-in portion, the first extending portion, the second extending portion, the third extending portion, the fourth extending portion and the first branch form a first radiation portion. The feed-in portion, the first extending portion, the second extending portion, the third extending portion, the fifth extending portion and the second branch form a second radiation portion. The feed-in portion, the first extending portion, the second extending portion and the third branch form a third radiation portion.

Abstract: A multi-band antenna includes a grounding portion, a feed-in portion, a feeding point, a first radiation portion, a second radiation portion, a third radiation portion and a fourth radiation portion. The feed-in portion has a first end edge, a second end edge, a first side edge and a second side edge. The feeding point is disposed at the feed-in portion. The first radiation portion is extended from the grounding portion. The second radiation portion is extended from the second end edge. The third radiation portion is extended from the first end edge. The fourth radiation portion is extended from an upper portion of the first end edge and an upper portion of the second end edge.

Abstract: A multi-band antenna is disclosed and comprises a substrate and an electro-conductive layer. The electro-conductive layer comprises: a feed-in terminal; a ground terminal; a connecting portion extended forward from the feed-in terminal; a first high frequency portion extended leftward from the connecting portion for controlling a third frequency band; a low frequency portion bent and extended leftward from the connecting portion for controlling a first frequency band and a second frequency band; and a second high frequency portion extended rightward from the connecting portion for controlling a fourth frequency band. Furthermore, the second high frequency portion is connected with the ground terminal and wider than the first high frequency portion; and harmonic oscillations are generated between the second and first high frequency portions to control a fifth frequency band. Hence, the multi-band antenna of the present invention can meet the requirement of various communication standards.

Abstract: A printed antenna is disclosed. The printed antenna includes a substrate and an electrically conductive layer formed on a top surface of the substrate. The electrically conductive layer comprises a first radiation part, a second radiation part, a first feed part, a second feed part, and a grounding part. The first radiation part is connected with the first feed part. The second radiation part is connected with the second feed part. The grounding part is connected with the first radiation part and the second radiation part. In the printed antenna of the present invention, the first feed part and the second feed part feed into two electromagnetic signals so as to implement a dual antenna function. Furthermore, the arrangement is reasonable, and the manufacturing cost is low.

Abstract: A multi-band antenna is disclosed and comprises a substrate and an electro-conductive layer. The electro-conductive layer comprises: a feed-in terminal; a ground terminal; a connecting portion extended forward from the feed-in terminal; a first high frequency portion extended leftward from the connecting portion for controlling a third frequency band; a low frequency portion bent and extended leftward from the connecting portion for controlling a first frequency band and a second frequency band; and a second high frequency portion extended rightward from the connecting portion for controlling a fourth frequency band. Furthermore, the second high frequency portion is connected with the ground terminal and wider than the first high frequency portion; and harmonic oscillations are generated between the second and first high frequency portions to control a fifth frequency band. Hence, the multi-band antenna of the present invention can meet the requirement of various communication standards.

Abstract: A test fixture is mounted to a supporting base and adapted for holding an electronic device, such as a laptop computer, a mobile phone and so on, on the purpose of testing an antenna characteristic of the electronic device. The test fixture includes a first fixing component and a second fixing component. The first fixing component is adapted for being mounted to the supporting base and has a first basic plate adapted for carrying the laptop computer. The second fixing component is removably mounted to the first fixing component, and has a plurality of supporting rods suspending above the first basic plate adapted for clamping the mobile phone therebetween.

Abstract: A multi-band antenna includes a first radiating portion, a second radiating portion extending perpendicularly from the first radiating portion, a third radiating portion extending perpendicularly from the second radiating portion and located at a same side with respect to the second radiating portion as the first radiating portion, a fourth radiating portion extending perpendicularly from the third radiating portion towards the first radiating portion, a fifth radiating portion in alignment with the first radiating portion, with a feeding portion connecting with the first radiating portion and the fifth radiating portion, a sixth radiating portion extending perpendicularly towards the fourth radiating portion from the fifth radiating portion and spaced away from the fourth radiating portion, and a grounding portion spaced from the first radiating portion, the feeding portion and the fifth radiating portion with a grounding area disposed thereon, and connected with the first radiating portion by a connecting p