Abstract: An antenna structure (10) includes an antenna feed-in element (1), a first antenna trace element (2), a second antenna trace element (3), a supporting element (4), a grounded-short-circuit element (5), a third antenna trace element (6) and a fourth antenna trace element (7). The first antenna trace element (2), the second antenna trace element (3), the third antenna trace element (6) and the fourth antenna trace element (7) which have vertical segments in different lengths form a multi-trace planar inverted-F antenna to obtain the best bandwidth covering the full band, so that the height of the antenna structure (10) is lower, the length is shorter and the structure is denser. The impedance matching of the antenna structure (10) is controlled easily. No external matching element is required. With the multi-trace and grounded-short-circuit design of the antenna structure (10), the better resonance in the LTE full band is obtained.

Abstract: Three-stack antennas are disclosed which include a first antenna, a second antenna, a third antenna and a circuit board. After the first antenna, the second antenna and the third antennas are stacked on the circuit board orderly, feed-in components are electrically connected to the circuit board. The antenna structures can be surface mounted. The antenna structures can three-feed-in, four-feed-in or five-feed-in configurations, or four-hole or five-hole configurations.

Abstract: A ten-frequency band antenna includes a carrier, a high-frequency segment, a low-frequency segment, a printed circuit board (PCB) and an inductor. The high-frequency segment is arranged on left side of the carrier and the low-frequency segment is arranged on right side of the carrier. The radiator on the bottom face of the carrier electrically connects with the micro strip of the PCB and the ground line of the ground metal when the carrier is fixed to the PCB. The low-frequency segment is located at an opened area and corresponding to a metal face with smaller area such that the low-frequency segment is at a free space to enhance the frequency response of the low-frequency segment and the bandwidth of the high-frequency segment. The area and the volume of blind hole on the carrier can adjust the effective dielectric constant to adjust the resonant frequency and bandwidth of the antenna.

Abstract: A multi-angle ultra wide band antenna for electronic devices is disclosed. The said antenna cover all mobile bands worldwide: 700/850/900/1700/1800/1900 and 2100 MHz and with sufficient bandwidth to include the 2400 and 2500 MHz mainly used in wireless networks, having a radiated element supported by a first substrate and expanding into a spatial geometry for transmission and reception of radio signal. An antenna base has a plurality of first solder pads on a second substrate for physical attachment to a printed circuit board and a second solder pad electrically connected to a terminal of said antenna to radio circuitry feed point, with compatible surface mount technology. The first and second substrates are joined by a bending line as a single substrate, where the said first substrate is allowed to be bent relative to the plane of the said second substrate.