Abstract: A mobile device supporting wideband operations includes an antenna structure that includes a ground element, a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, and a fifth radiation element. The first radiation element has a feeding point. The second radiation element is coupled to a first grounding point on the ground element. The third radiation element is coupled to the feeding point. The first radiation element and the third radiation element are at least partially surrounded by the second radiation element. The fourth radiation element is coupled to a second grounding point on the ground element. The fourth radiation element includes a first elevated portion. The fifth radiation element is coupled to the feeding point. The fifth radiation element includes a second elevated portion.

Abstract: A detection device with a calibration function is configured to detect an object. The detection device includes an antenna element, a transmission line, a detection circuit, and a processor. The transmission line is coupled to the antenna element. The detection circuit is coupled to the transmission line. The detection circuit performs a detection process, so as to obtain an estimated distance between the antenna element and the object. The processor is coupled to the detection circuit. The processor calculates the calibrated distance by subtracting the error distance from the estimated distance.

Abstract: A mobile device includes a hybrid antenna, a tunable circuit element, an RF (Radio Frequency) module, and a proximity sensor. The tunable circuit element provides an impedance value. The RF module generates RF power. The hybrid antenna is coupled through the tunable circuit element to the RF module. The proximity sensor is respectively coupled to the hybrid antenna, the tunable circuit element, and the RF module, and is configured to detect a specific distance between the hybrid antenna and a conductive element. The tunable circuit element and the RF module are operated according to relative information of the specific distance. If the specific distance is shorter than or equal to a first threshold distance, the RF module will reduce the RF power. If the specific distance is shorter than or equal to a second threshold distance, the tunable circuit element will change the impedance value.

Abstract: A mobile device with high radiation efficiency includes a ground element, a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, a dielectric substrate, a speaker body, and a cable. The first radiation element and the fourth radiation element are coupled to the ground element. The second radiation element and the third radiation element are coupled to a feeding point. An antenna structure is formed by the first radiation element, the second radiation element, the third radiation element, and the fourth radiation element. The speaker body has a first vertical projection on the dielectric substrate, and the first vertical projection at least partially overlaps the third radiation element. The cable is coupled to the speaker body. The cable has a second vertical projection on the dielectric substrate, and the second vertical projection does not overlap the antenna structure at all.

Abstract: A mobile device supporting wideband operations includes a first radiation element, a second radiation element, a third radiation element, and a dielectric substrate. The first radiation element has a feeding point. The second radiation element is coupled to the ground voltage. The first radiation element is at least partially surrounded by the second radiation element. The feeding point is coupled through the third radiation element to the ground voltage. The first radiation element, the second radiation element, and the third radiation element are disposed on the dielectric substrate. An antenna structure is formed by the first radiation element, the second radiation element, and the third radiation element.

Abstract: A mobile device with high radiation efficiency includes a ground element, a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, and a dielectric substrate. The first radiation element has a feeding point. The second radiation element is coupled to the first radiation element. The first radiation element is coupled through the third radiation element to the ground element. The fourth radiation element is coupled between the first radiation element and the third radiation element. The first radiation element, the second radiation element, the third radiation element, and the fourth radiation element are disposed on the dielectric substrate. An antenna structure is formed by the first radiation element, the second radiation element, the third radiation element, and the fourth radiation element.

Abstract: A mobile device with communication and sensing functions includes a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, a capacitor, a first metal element, a second metal element, a third metal element, a nonconductive support element, and a proximity sensor. The first metal element is coupled through the capacitor to a ground voltage. The second metal element is coupled to the first metal element. The third metal element is coupled to the first metal element. The third metal element and the second metal element substantially extend in opposite directions. The proximity sensor is coupled to the capacitor and the first metal element. A hybrid antenna structure is formed by a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, a first metal element, a second metal element, and a third metal element.

Abstract: A convertible notebook computer includes a metal mechanism element, a first radiation element, a second radiation element, a third radiation element, a first parasitic element, a second parasitic element, a third parasitic element, and a dielectric substrate. The metal mechanism element has a closed slot. The first radiation element has a feeding point. The second radiation element is coupled to the first radiation element. The third radiation element is coupled to the first radiation element. The first parasitic element is adjacent to the second radiation element. The second parasitic element is adjacent to the third radiation element. The third parasitic element is adjacent to the first radiation element. An antenna structure is formed by the closed slot of the metal mechanism element, the first radiation element, the second radiation element, the third radiation element, the first parasitic element, the second parasitic element, and the third parasitic element.

Abstract: A mobile device for enhancing antenna stability includes a nonconductive frame, a back cover, a PIFA (Planar Inverted F Antenna), and a U-shaped ground element. The PIFA is disposed between the nonconductive frame and the back cover. The U-shaped ground element is coupled to the PIFA, and is at least partially attached to the nonconductive frame. The vertical projection of the PIFA at least partially overlaps the U-shaped ground element.

Abstract: A hybrid antenna structure includes a first metal element, a second metal element, a third metal element, a cable, and a proximity sensor. The first metal element has a feeding point. The second metal element is adjacent to and separate from the first metal element. A coupling gap is formed between the second metal element and the first metal element. The third metal element is coupled to a connection point on the second metal element. The proximity sensor is coupled through the cable to the third metal element. The second metal element and the third metal element are used as both a sensing pad and a radiation element.

Abstract: A mobile device includes a main radiation element, a parasitic radiation element, and an additional radiation element. The main radiation element has a first notch. The main radiation element includes a feeding region coupled to a signal source, and a grounding region coupled to a ground voltage. The parasitic radiation element is coupled to the ground voltage. The parasitic radiation element is adjacent to the feeding region of the main radiation element. The additional radiation element is coupled to the main radiation element. The additional radiation element and the parasitic radiation element substantially extend in the same direction. An antenna structure is formed by the main radiation element, the parasitic radiation element, and the additional radiation element.

Abstract: An antenna for a mobile device includes a ground element, a substrate disposed over the ground element, a first radiating element having a feedpoint, a second radiating element coupled to the ground element and adjacent the first radiating element, and a connection metal element disposed on the substrate, and a coaxial cable, having central conductor coupled to the feedpoint, a shielding conductor, and an insulating outer layer, wherein the shielding conductor has a bare region, spaced from the feedpoint, that exposes a portion of the shielding conductor, and the portion of the shielding conductor is coupled through the connection metal element to the second radiating element.

Abstract: A convertible notebook computer includes a metal mechanism element, a first radiation element, a second radiation element, a third radiation element, a first parasitic element, a second parasitic element, a third parasitic element, and a dielectric substrate. The metal mechanism element has a closed slot. The first radiation element has a feeding point. The second radiation element is coupled to the first radiation element. The third radiation element is coupled to the first radiation element. The first parasitic element is adjacent to the second radiation element. The second parasitic element is adjacent to the third radiation element. The third parasitic element is adj acent to the first radiation element. An antenna structure is formed by the closed slot of the metal mechanism element, the first radiation element, the second radiation element, the third radiation element, the first parasitic element, the second parasitic element, and the third parasitic element.

Abstract: A hybrid antenna structure includes a first metal element, a second metal element, a third metal element, a cable, and a proximity sensor. The first metal element has a feeding point. The second metal element is adjacent to and separate from the first metal element. A coupling gap is formed between the second metal element and the first metal element. The third metal element is coupled to a connection point on the second metal element. The proximity sensor is coupled through the cable to the third metal element. The second metal element and the third metal element are used as both a sensing pad and a radiation element.

Abstract: A mobile device for enhancing antenna stability includes a nonconductive frame, a back cover, a PIFA (Planar Inverted F Antenna), and a U-shaped ground element. The PIFA is disposed between the nonconductive frame and the back cover. The U-shaped ground element is coupled to the PIFA, and is at least partially attached to the nonconductive frame. The vertical projection of the PIFA at least partially overlaps the U-shaped ground element.

Abstract: An antenna for a mobile device includes a ground element, a substrate disposed over the ground element, a first radiating element having a feedpoint, a second radiating element coupled to the ground element and adjacent the first radiating element, and a connection metal element disposed on the substrate, and a coaxial cable, having central conductor coupled to the feedpoint, a shielding conductor, and an insulating outer layer, wherein the shielding conductor has a bare region, spaced from the feedpoint, that exposes a portion of the shielding conductor, and the portion of the shielding conductor is coupled through the connection metal element to the second radiating element.

Abstract: An antenna for a mobile device includes a ground element, a substrate disposed over the ground element, a first radiating element having a feedpoint, a second radiating element coupled to the ground element and adjacent the first radiating element, and a connection metal element disposed on the substrate, and a coaxial cable, having central conductor coupled to the feedpoint, a shielding conductor, and an insulating outer layer, wherein the shielding conductor has a bare region, spaced from the feedpoint, that exposes a portion of the shielding conductor, and the portion of the shielding conductor is coupled through the connection metal element to the second radiating element.

Abstract: A mobile device supporting MIMO (Multi-Input and Multi-Output) includes a metal mechanism element, a metal sidewall, a first feeding element, a second feeding element, a third feeding element, and a fourth feeding element. The metal sidewall is coupled to the metal mechanism element. A first slot, a second slot, a third slot, and a fourth slot are formed on the metal mechanism element and the metal sidewall. A first antenna structure is formed by the first slot and the first feeding element. A second antenna structure is formed by the second slot and the second feeding element. A third antenna structure is formed by the third slot and the third feeding element. A fourth antenna structure is formed by the fourth slot and the fourth feeding element.

Abstract: An antenna structure includes a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, and a dielectric substrate. The first radiation element is coupled to a ground voltage. The first radiation element includes a variable-width portion. The second radiation element has a feeding point. The second radiation element is adjacent to the first radiation element. The third radiation element is coupled to the variable-width portion of the first radiation element. The fourth radiation element is coupled to the second radiation element. The dielectric substrate has a first surface and a second surface which are opposite to each other. The second radiation element and the fourth radiation element are disposed on the first surface of the dielectric substrate. The first radiation element and the third radiation element are disposed on the second surface of the dielectric substrate.

Abstract: An antenna structure includes a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, and a dielectric substrate. The first radiation element is coupled to a ground voltage. The first radiation element includes a variable-width portion. The second radiation element has a feeding point. The second radiation element is adjacent to the first radiation element. The third radiation element is coupled to the variable-width portion of the first radiation element. The fourth radiation element is coupled to the second radiation element. The dielectric substrate has a first surface and a second surface which are opposite to each other. The second radiation element and the fourth radiation element are disposed on the first surface of the dielectric substrate. The first radiation element and the third radiation element are disposed on the second surface of the dielectric substrate.