Semi built-in multi-band printed antenna
First Claim
1. A communication device for use in a radio communication system, said device comprising:
- a microphone opening for allowing the communication device to receive auditory information from a user;
a speaker opening for allowing the communication device to transmit auditory information to said user;
a keypad; and
a semi built-in multiple band printed antenna, said antenna comprising;
a first patch part located on a printed circuit board (PCB) within said communication device and tuned to a first frequency band, a second patch part located outside said PCB and tuned to a second frequency band different from said first frequency band, and at least one slot formed in each of said first and second patch parts.
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Abstract
The present invention provides a miniature, built-in multi-band antenna which is suitable for use in future compact mobile terminals. According to exemplary embodiments, a semi built-in printed antenna is provided which includes patch elements of different sizes and capable of being tuned to different frequency bands. An internal patch element is located on a printed circuit board (PCB) within a communication device and another patch element is located outside the PCB. On each patch element is formed a slot which divides the patch element into sub-parts. Each sub-part of the internal patch element is structured so as to be resonant at a frequency in the same frequency band to which the internal patch element is tuned. Each sub-part of the external patch element is similarly structured but having a resonance with a larger bandwidth than the internal patch element and at a frequency band to which the external patch element is tuned. As a result, a high efficiency, broad band, multi-band, and surface mountable low profile antenna can be realized.
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Citations
28 Claims
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1. A communication device for use in a radio communication system, said device comprising:
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a microphone opening for allowing the communication device to receive auditory information from a user;
a speaker opening for allowing the communication device to transmit auditory information to said user;
a keypad; and
a semi built-in multiple band printed antenna, said antenna comprising;
a first patch part located on a printed circuit board (PCB) within said communication device and tuned to a first frequency band, a second patch part located outside said PCB and tuned to a second frequency band different from said first frequency band, and at least one slot formed in each of said first and second patch parts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A communication device for use in a radio communication system, said device comprising:
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a printed circuit board (PCB) mounted on a chassis of said communication device;
a substrate attached to said PCB and having a predetermined thickness; and
a patch antenna mounted on said substrate and comprising a plurality of patch parts, each having at least one slot formed therein, a first of said patch parts being located on the PCB and tuned to a first frequency band and a second of said patch parts being located outside said PCB and tuned to a second frequency band, said frequency band being different from the first frequency band. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification