Abstract: A dual-band circularly polarized antenna is disclosed, which includes a ground metal plate, a dielectric substrate, a first microstrip radiation portion and a second microstrip radiation portion. The dielectric substrate is formed on the ground metal plate. The first microstrip radiation portion is formed on the dielectric substrate and has at least one pair of symmetric truncated corners. The second microstrip radiation portion is formed on the dielectric substrate and includes a plurality of radiation units. Each of the plurality of radiation units is extended from the first microstrip radiation portion along a first direction.

Abstract: An antenna structure for wearable electronic device has a device casing, an antenna ground structure joined with the device casing, a carrier connected to the device casing, and an antenna radiation structure joined with the carrier. Thereby, the antenna structure can be integrated into the original structure of a wearable device so that the volume of the wearable device can be reduced, which solves the difficulty in reducing the volume of a wireless communication device with a requirement of an antenna disposition in the prior art. In addition, a wearable wireless electronic device has the antenna structure so as to have the advantage of smaller volume relative to a wearable wireless electronic device in the prior art.

Abstract: An antenna module includes an antenna set, a feeding point and a ground plane. The antenna set includes a first antenna, and a second antenna. The first antenna has a first resonant frequency and the second antenna a second resonant frequency.

Abstract: A game device includes a processor, a display device having a screen displaying a plurality of enemy vessel images, an invisible vessel image and a target-finding frame, and a joystick device. The enemy vessel images and the invisible vessel image are moving across the screen. The invisible vessel image is concealed in the screen. The joystick device controls movement of the target-finding frame in the screen. The processor is capable of transforming the invisible vessel image into a visible vessel image when the target-finding frame is moved to overlap the invisible vessel image. In case the enemy vessel images and the invisible vessel image are attacked, the processor executes in such a manner to blow the enemy vessel images and the invisible vessel image off the screen.