Abstract: A frequency-tunable antenna includes a radiating element, a feeding terminal, a first ground terminal and a second ground terminal. The radiating element includes a first segment, a turning segment and a second segment. The turning segment is interconnected between the first segment and the second segment. The feeding terminal is disposed at the first segment of the radiating element, and electrically connected with the radiating element and the circuit substrate. The first ground terminal disposed beside the feeding terminal. The second ground terminal is arranged between the first ground terminal and the turning segment of the radiating element. A radio frequency switch mounted on the circuit substrate is selectively connected with either the first ground terminal or the second ground terminal, so that the frequency-tunable antenna transmits and receives a wireless signal in first frequency band or a second frequency band.

Abstract: A multiple frequency band antenna includes a common connecting element, a first radiating element, a second radiating element, a common feeding point and a common ground terminal. The common connecting element includes a connecting part and a turning part, which are arranged in different planes. The first radiating element is connected with the connecting part of the common connecting element. The second radiating element is connected with the turning part of the common connecting element. The second radiating element has a longer path length compared with the first radiating element. A combination of the common connecting element and the first radiating element is configured to transmit and receive wireless signals in a first frequency band. A combination of the common connecting element and the second radiating element is configured to transmit and receive wireless signals in a second frequency band.

Abstract: A multiple frequency band antenna includes a common connecting element, a first radiating element, a second radiating element, a common feeding point and a common ground terminal. The common connecting element includes a connecting part and a turning part, which are arranged in different planes. The first radiating element is connected with the connecting part of the common connecting element. The second radiating element is connected with the turning part of the common connecting element. The second radiating element has a longer path length compared with the first radiating element. A combination of the common connecting element and the first radiating element is configured to transmit and receive wireless signals in a first frequency band. A combination of the common connecting element and the second radiating element is configured to transmit and receive wireless signals in a second frequency band.

Abstract: The present invention is related to a portable electronic device with broadcast antenna at least including a main body having a battery accommodating space; a cover having a battery area corresponding to the battery accommodating space of the main body, wherein the shape and size of the cover are adapted to cover the battery accommodating space and the cover is separablely assembled with the corresponding outer edge of the battery accommodating space of the main body; and a broadcast antenna, disposed on the inner surface of the cover other than the battery area for unidirectionally receiving broadcasting signals in a first frequency band.

Abstract: A multiple frequency band antenna for a wireless communication device includes a first radiating element, a connecting element and a second radiating element. The connecting element has an end connected to the first radiating element and includes a feeding point and a ground terminal. The second radiating element has a first terminal connected to the other end of the connecting element and a second terminal externally extended and bent for several time. The second radiating element is externally extended in the direction substantially parallel with the connecting element and has a longer path length compared with the first radiating element. The first radiating element is configured to transmit and receive wireless signals in multiple first frequency bands. The second radiating element is configured to transmit and receive wireless signals in multiple second frequency bands. The frequencies of the first frequency bands are higher than those of the second frequency bands.