Abstract: A combination battery and antenna includes a battery having a positive contact and a negative contact, at least one of the positive contact and the negative contact comprising an antenna coupled to a matching circuit and to a radio frequency choke, whereby direct current (DC) is supplied to a battery circuit and a radio frequency (RF) signal is supplied to an RF circuit, and at least one secondary radiator parasitically coupled to the at least one of the positive contact and the negative contact of the battery.

Abstract: A compact antenna system that provides an antenna capable of transmitting and/or receiving radio signals configured on a flexible substrate material supporting user control interface buttons. In an embodiment, an antenna may be formed on a user control interface button flex between the wire traces used to couple the user control interface buttons to a printed circuit board. In order to prevent the interference on the antenna that may be caused when current passes through the wire traces coupling the user control interface buttons to the printed circuit board, an RF choke (i.e., LC filter) circuit and bypass capacitors may be configured along each wire trace. In another embodiment, the wire trace coupling a user control interface button to the printed circuit board may be configured to serve the dual purposes of coupling the user control interface button to the printed circuit board; and functioning as an antenna capable of transmitting and/or receiving wireless radio signals.

Abstract: A multiband antenna for a wireless device includes a housing base portion, housing antenna portion and a feed contact. The housing base portion configured to receive radio circuitry thereon and include a first peripheral edge and a first conductive material. The housing antenna portion spaced away from and substantially opposed to the housing base portion, including a second peripheral edge and a second conductive material. The housing base and antenna portions together forming an outermost housing of the mobile wireless device, enclosing the radio circuitry there between. The first and second peripheral edges forming opposed lengthwise edges of a slot having a width formed by a distance between the first and second peripheral edges. The feed contact coupling the housing base portion, the housing antenna portion and the radio circuitry for providing at least one driving frequency to at least the housing antenna portion from the radio circuitry.

Abstract: A simple, compact multi-band PIFA including two arm portions, where one arm portion is grounded at two points to form a loop, a ground plane, and a plastic carrier and housing. The antenna radiates a same signal from both arm portions, at different efficiencies according to the radiated frequency and the effective length of each arm. The antenna is made from a single standard metal sheet by cutting it and is assembled with the metal ground plane and the other plastic parts. In one embodiment, the antenna is folded into a 3D U-shape to reduce its size for use in mobile communication devices. In another embodiment, the antenna is a penta-band antenna with return loss of ?6 B or better and measures 40×8×8 mm or smaller.

Abstract: A multiband antenna for a wireless device includes a housing base portion, housing antenna portion and a feed contact. The housing base portion configured to receive radio circuitry thereon and include a first peripheral edge and a first conductive material. The housing antenna portion spaced away from and substantially opposed to the housing base portion, including a second peripheral edge and a second conductive material. The housing base and antenna portions together forming an outermost housing of the mobile wireless device, enclosing the radio circuitry there between. The first and second peripheral edges forming opposed lengthwise edges of a slot having a width formed by a distance between the first and second peripheral edges. The feed contact coupling the housing base portion, the housing antenna portion and the radio circuitry for providing at least one driving frequency to at least the housing antenna portion from the radio circuitry.

Abstract: A compact antenna system that provides an antenna capable of transmitting and/or receiving radio signals configured on a flexible substrate material supporting user control interface buttons. In an embodiment, an antenna may be formed on a user control interface button flex between the wire traces used to couple the user control interface buttons to a printed circuit board. In order to prevent the interference on the antenna that may be caused when current passes through the wire traces coupling the user control interface buttons to the printed circuit board, an RF choke (i.e., LC filter) circuit and bypass capacitors may be configured along each wire trace. In another embodiment, the wire trace coupling a user control interface button to the printed circuit board may be configured to serve the dual purposes of coupling the user control interface button to the printed circuit board; and functioning as an antenna capable of transmitting and/or receiving wireless radio signals.

Abstract: A multiband antenna for a mobile device is disclosed. The mobile device includes a multiband antenna configured to communicate with a base station. The multiband antenna includes a ground plane, a ground plane extension, and a plurality of antenna arms. The ground plane, the ground plane extension, and the plurality of antenna arms are configured to communicate signals in multiple frequency bands, where the ground plane and the ground plane extension have a length proportional to approximately a quarter wavelength of a frequency in the multiple frequency bands. The mobile device further includes a modulator and demodulator configured to modulate signal for transmission and demodulate signal received from the base station, and a controller configured to control communication of signals using the multiband antenna and the modem.

Abstract: A combination battery and antenna includes a battery having a positive contact and a negative contact, at least one of the positive contact and the negative contact comprising an antenna coupled to a matching circuit and to a radio frequency choke, whereby direct current (DC) is supplied to a battery circuit and a radio frequency (RF) signal is supplied to an RF circuit, and at least one secondary radiator parasitically coupled to the at least one of the positive contact and the negative contact of the battery.

Abstract: A multiband antenna for a mobile device is disclosed. The mobile device includes a multiband antenna configured to communicate with a base station. The multiband antenna includes a ground plane, a ground plane extension, and a plurality of antenna arms. The ground plane, the ground plane extension, and the plurality of antenna arms are configured to communicate signals in multiple frequency bands, where the ground plane and the ground plane extension have a length proportional to approximately a quarter wavelength of a frequency in the multiple frequency bands. The mobile device further includes a modulator and demodulator configured to modulate signal for transmission and demodulate signal received from the base station, and a controller configured to control communication of signals using the multiband antenna and the modem.

Abstract: A simple, compact multi-band PIFA including two arm portions, where one arm portion is grounded at two points to form a loop, a ground plane, and a plastic carrier and housing. The antenna radiates a same signal from both arm portions, at different efficiencies according to the radiated frequency and the effective length of each arm. The antenna is made from a single standard metal sheet by cutting it and is assembled with the metal ground plane and the other plastic parts. In one embodiment, the antenna is folded into a 3D U-shape to reduce its size for use in mobile communication devices. In another embodiment, the antenna is a penta-band antenna with return loss of ?6 B or better and measures 40×8×8 mm or smaller.

Abstract: A multi-band antenna device includes a primary antenna with a helical component and a folded component. A wire is formed in a helix to construct the helical component and a wire is formed in a folded-over fashion to form the folded component. The folded component is disposed inside the helix. The helical component and folded component may be formed with separate wires or as one continuous wire. The primary antenna is for resonating in multiple frequency bands including a first frequency band correlated with the helical component and a second frequency band correlated with the folded component. A secondary antenna may be included to provide diversity and possibly other frequency bands. The secondary antenna includes a planar inverted F antenna.

Abstract: A dielectric material having a dielectric constant which varies inversely with frequency, and preferably with the second power of frequency, fills the space between a radiator and a reflecting groundplane. The back-directed wave is reflected back to the radiator in phase with the directly radiated wave over a wide frequency band, increasing the radiator efficiency.