Patent Application
20100321274
1. Field of the Invention
The present invention relates to an antenna assembly, and more particularly to a multiple frequency antenna assembly including a structure for allowing the antenna assembly to suitably transmit and receive the signals and for increasing the gain of the antenna assembly.
2. Description of the Prior Art
Typical antenna devices comprise one or more antenna conductors or conductive branches each having one or more feeds extended therefrom, and the conductive branches are in adjacent, spaced-apart relationship for transmitting or receiving waves or signals and for allowing the radiators to transmit or to receive waves or signals or different resonant frequencies.
For example, U.S. Pat. No. 6,529,749 to Hayes et al., and U.S. Pat. No. 6,542,126 to Bahr et al. disclose two of the typical compact antenna devices each comprising one or more antenna conductors or conductive branches provided for use within wireless communication devices, such as radiotelephones, and for jointly radiating as a dipole antenna.
However, the antenna conductors or the conductive branches are disposed parallel to a ground plane such that the signal transmitting and receiving functions of the conductive branches are limited.
U.S. Pat. No. 6,570,538 to Vaisanen et al., U.S. Pat. No. 6,606,250 to Shi, and U.S. Pat. No. 6,861,986 to Fang et al. disclose three further typical multiple frequency antenna devices each comprising one or more antenna conductors or radiating elements having opposite ends and a grounding element spaced apart from the radiating elements.
However, similarly, the antenna conductor or radiating elements are also disposed parallel to the ground plane such that the signal transmitting and receiving functions of the conductive branches are limited.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional antenna members or devices.
The primary objective of the present invention is to provide an antenna assembly including a structure for allowing the antenna assembly to suitably transmit and receive the signals and for increasing the gain of the antenna assembly.
In accordance with one aspect of the invention, there is provided an antenna assembly comprising a circuit board including two opposite sides, such as including a first side and a second side, a substrate extended from the second side of the circuit board, a conductive member provided the first side of the circuit board, and a global position system (GPS) antenna connected to the conductive member of the circuit board and arranged opposite to the second side of the circuit board and the substrate, or the circuit board is disposed between the GPS antenna and the substrate, or the GPS antenna and the substrate are disposed on the two opposite sides of the circuit board such that the GPS antenna will not be interfered or affected by the substrate.
The conductive member includes at least one ground strip extended from the conductive member and connected to the GPS antenna, or the conductive member includes an I-shaped construction.
The circuit board includes a first antenna device provided on the second side of the circuit board. The first antenna device may be selected from a double frequency antenna device ranged between 2.4 GHz and 5 GHz.
The circuit board includes a second antenna device provided on the second side of the circuit board. The second antenna device may also be selected from a double frequency antenna device ranged between 2.4 GHz and 5 GHz.
The circuit board includes a global system for mobile communications (GSM) antenna provided on the second side of the circuit board which may be selected from a four-frequency antenna GSM850/900/1800/1900 MHz. It is to be noted that the circuit board is disposed between the GPS antenna and the substrate, or the GPS antenna and the substrate are disposed on the two opposite sides of the circuit board such that the GPS antenna will not be interfered or affected by the antenna devices and the GSM antenna.
The circuit board includes an amplifier module provided on the second side of the circuit board and electrically connected to the GPS antenna.
The GPS antenna includes an antenna conductor and a feed extended from the antenna conductor and connected to the conductive member. The circuit board is preferably perpendicular to the substrate.
Further objectives and advantages of the present invention will become apparent from a careful reading of the detailed description provided hereinbelow, with appropriate reference to the accompanying drawings.
Referring to the drawings, and initially to
As shown in
The antenna assembly in accordance with the present invention further comprises a global position system (GPS) antenna 40 formed by hammered or forged metal members and including an antenna conductor 41 and a feed 42 extended from the antenna conductor 41 and connected or coupled to one of the ground strips 21 of the conductive member 20, and also connected or coupled to the amplifier module 33 for transmitting or receiving waves or signals, and for allowing the GPS antenna 40 and the substrate 10 and the antenna devices 30, 31 and the GSM antenna 32 to be disposed on the two opposite sides of the circuit board 11.
In operation, as shown in
As shown in
As shown in
Accordingly, the antenna assembly in accordance with the present invention includes a structure for allowing the antenna assembly to suitably transmit and receive the signals and for increasing the gain of the antenna assembly, and for preventing the GPS antenna and the antenna devices and the GSM antenna that are disposed on two opposite sides of the circuit board from being interfered or affected by each other.
Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the detailed construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.
