Abstract:
The invention provides a multi-band antenna assembly comprising a connection conductor, a first resonant element, a second resonant element, and a parasitic resonant element. The first resonant element and the second resonant element are electrically connected with the connection conductor respectively. The parasitic resonant element and a grounding part of the connection conductor are grounded. The parasitic resonant element is disposed substantially parallel to the first resonant element, and therein a length of the parasitic resonant element is 15.2 mm˜25.2 mm. The multi-band antenna assembly can provide a working band containing GSM850/GSM900/DCS/PSC/UMTS, even 2.4 GHz or GPS.
Abstract:
A wireless communication device includes a housing and an antenna assembly. The antenna assembly includes a base board, a feed member electronically connecting with the base board to carry an electrical current, and a radio member including a first radio portion, the first radio portion defining a first slot. The radiator couples with the feed member, inducing an electrical current in the first radio portion. The radio member is electronically connected to the base board through the metal housing, enabling the induced electrical current to flow through the first radio portion, the metal housing, and the base board to form a current loop. The induced electrical current flows through the first slot to excite a first resonance mode, enabling the antenna assembly to receive/transmit a first wireless signal.
Abstract:
A wireless communication device includes a metal housing, a baseboard, and a current feed member electronically connected to the baseboard to obtain an electrical current from the baseboard. The housing defines a first notch and a second notch communicating with the first notch. The housing couples with the current feed member, such that the first notch and the second notch both induce the electrical current to excite two resonance modes, the two resonance modes enabling the wireless communication device to receive and transmit first wireless signals and second wireless signals having different central frequencies.
Abstract:
A wireless communication device includes a metal housing, a baseboard, and a current feed member electronically connected to the baseboard to obtain an electrical current from the baseboard. The housing defines a first notch and a second notch communicating with the first notch. The housing couples with the current feed member, such that the first notch and the second notch both induce the electrical current to excite two resonance modes, the two resonance modes enabling the wireless communication device to receive and transmit first wireless signals and second wireless signals having different central frequencies.
Abstract:
A wireless communication device includes a housing and an antenna assembly. The antenna assembly includes a base board, a feed member electronically connecting with the base board to carry an electrical current, and a radio member including a first radio portion, the first radio portion defining a first slot. The radiator couples with the feed member, inducing an electrical current in the first radio portion. The radio member is electronically connected to the base board through the metal housing, enabling the induced electrical current to flow through the first radio portion, the metal housing, and the base board to form a current loop. The induced electrical current flows through the first slot to excite a first resonance mode, enabling the antenna assembly to receive/transmit a first wireless signal.
Abstract:
The invention of planar dipole antenna comprises a dielectric substrate, two radiation conductors, and a transmission line. The two radiation conductors are formed on the dielectric substrate and separated by a predefined distance. Each radiation conductor includes first and second metal plates, and a meandered metal line. The meandered metal line has two ends and at least three bending points. One end of the meandered metal line is connected to the first metal plate, while the other end is connected to the second metal plate. This antenna increases the receiver's gain up to 6.8 dBi through the use of the current distribution of three equal-phase areas. This overcomes the drawback of conventional antenna with receiver's gain only about 2.2 dBi. This planar dipole antenna has a simple structure of single-sided circuitry, and is easily formed on the dielectric substrate by a standard printing or etching process.
Abstract:
A planar dipole antenna comprises a dielectric substrate, two radiation conductors, and a transmission line. The two radiation conductors are formed on the dielectric substrate and separated by a predefined distance. Each radiation conductor includes first and second metal plates, and a meandered metal line. The meandered metal line has two ends and at least three bending points. One end of the meandered metal line is connected to the first metal plate, while the other end is connected to the second metal plate. This antenna increases the receiver's gain up to 6.8 dBi through the use of the current distribution of three equal-phase areas. This overcomes the drawback of a conventional antenna with receiver's gain only about 2.2 dBi. This planar dipole antenna has a simple structure of single-sided circuitry, and is easily formed on the dielectric substrate by a standard printing or etching process.