Handheld electronic devices with isolated antennas
First Claim
1. A wireless handheld electronic device comprising:
- storage that stores data;
processing circuitry coupled to the storage that generates data for wireless transmission and that processes wirelessly received data; and
wireless communications circuitry, wherein the wireless communications circuitry comprises;
transceiver circuitry;
first and second antennas; and
first and second transmission lines, wherein the first transmission line has a ground conductor and has a signal conductor and conveys radio-frequency signals for the first antenna between the transceiver circuitry and the first antenna, wherein the second transmission line has a ground conductor and has a signal conductor and conveys radio-frequency signals for the second antenna between the transceiver circuitry and the second antenna, wherein the first antenna operates in a first frequency range and a second frequency range, wherein the second antenna operates in a third frequency range that is different than the first and second frequency ranges, wherein the first antenna comprises a planar ground element with a dielectric-filled slot and a planar resonating element located above the slot, and wherein the planar resonating element comprises an antenna isolation element that resonates in the third frequency range and isolates the first antenna and the second antenna in the third frequency range.
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Accused Products
Abstract
Handheld electronic devices are provided that contain wireless communications circuitry having at least first and second antennas. An antenna isolation element reduces signal interference between the antennas, so that the antennas may be used in close proximity to each other. A planar ground element may be used as a ground by the first and second antennas. The first antenna may be formed using a hybrid planar-inverted-F and slot arrangement in which a planar resonating element is located above a rectangular slot in the planar ground element. The second antenna may be formed from an L-shaped strip. The planar resonating element of the first antenna may have first and second arms. The first arm may resonate at a common frequency with the second antenna and may serve as the isolation element. The second arm may resonate at approximately the same frequency as the slot portion of the hybrid antenna.
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Citations
10 Claims
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1. A wireless handheld electronic device comprising:
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storage that stores data; processing circuitry coupled to the storage that generates data for wireless transmission and that processes wirelessly received data; and wireless communications circuitry, wherein the wireless communications circuitry comprises; transceiver circuitry; first and second antennas; and first and second transmission lines, wherein the first transmission line has a ground conductor and has a signal conductor and conveys radio-frequency signals for the first antenna between the transceiver circuitry and the first antenna, wherein the second transmission line has a ground conductor and has a signal conductor and conveys radio-frequency signals for the second antenna between the transceiver circuitry and the second antenna, wherein the first antenna operates in a first frequency range and a second frequency range, wherein the second antenna operates in a third frequency range that is different than the first and second frequency ranges, wherein the first antenna comprises a planar ground element with a dielectric-filled slot and a planar resonating element located above the slot, and wherein the planar resonating element comprises an antenna isolation element that resonates in the third frequency range and isolates the first antenna and the second antenna in the third frequency range. - View Dependent Claims (2, 3, 4, 5)
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6. First and second antennas for use in a handheld device that has a substantially rectangular housing with lateral dimensions, comprising:
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a substantially rectangular ground plane antenna element having lateral dimensions substantially equal to the lateral dimensions of the housing, wherein the ground plane antenna element serves as ground for the first and second antennas; a first planar antenna resonating element associated with the first antenna and a second planar antenna resonating element associated with the second antenna, wherein the first antenna operates in a first frequency range and a second frequency range, wherein the second antenna operates in a third frequency range that is different than the first and second frequency ranges; and an antenna isolation element that resonates in the third frequency range and that isolates the first antenna and the second antenna in the third frequency range. - View Dependent Claims (7, 8, 9, 10)
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Specification