Efficient multiple-band antenna switching circuit
First Claim
1. An antenna switching circuit capable of coupling a plurality of ports to an antenna, said antenna switching circuit comprising:
- a first switch activated by a first control signal for establishing a connection between a first transmit port and said antenna;
a second switch activated by a second control signal for establishing a connection between a second transmit port and said antenna;
a third switch activated by a third control signal for establishing a connection between a first receive port and said antenna;
a fourth switch activated by said third control signal for establishing a connection between a second receive port and said antenna, wherein said first receive port and said second receive port are simultaneously connected to said antenna when said third switch and said fourth switch are activated by said third control signal.
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Accused Products
Abstract
An exemplary antenna switching circuit comprises first, second, third and fourth switches. The first switch is activated by a first control signal for establishing a connection between a first transmit port and an antenna; the second switch is activated by a second control signal for establishing a connection between a second transmit port and the antenna; the third switch is activated by a third control signal for establishing a connection between a first receive port and the antenna; and the fourth switch is activated by the third control signal for establishing a connection between a second receive port and the antenna. With this arrangement, the first receive port and the second receive port are simultaneously connected to the antenna when the third switch and the fourth switch are activated by the third control signal.
16 Citations
26 Claims
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1. An antenna switching circuit capable of coupling a plurality of ports to an antenna, said antenna switching circuit comprising:
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a first switch activated by a first control signal for establishing a connection between a first transmit port and said antenna;
a second switch activated by a second control signal for establishing a connection between a second transmit port and said antenna;
a third switch activated by a third control signal for establishing a connection between a first receive port and said antenna;
a fourth switch activated by said third control signal for establishing a connection between a second receive port and said antenna, wherein said first receive port and said second receive port are simultaneously connected to said antenna when said third switch and said fourth switch are activated by said third control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An antenna switching circuit capable of coupling a plurality of ports to an antenna, said antenna switching circuit comprising
means for connecting a first transmit port to said antenna upon receipt of a first control signal; -
means for connecting a second transmit port to said antenna upon receipt of a second control signal;
means for simultaneously connecting a first receive port and a second receive port to said antenna upon receipt of a third control signal. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A transmit module for a mobile phone device, said transmit module coupled to an antenna, said transmit module comprising an antenna switching circuit, said antenna switching circuit comprising:
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a first switch activated by a first control signal for establishing a connection between a first transmit port and said antenna;
a second switch activated by a second control signal for establishing a connection between a second transmit port and said antenna;
a third switch activated by a third control signal for establishing a connection between a first receive port and said antenna;
a fourth switch activated by said third control signal for establishing a connection between a second receive port and said antenna, wherein said first receive port and said second receive port are simultaneously connected to said antenna when said third switch and said fourth switch are activated by said third control signal. - View Dependent Claims (16, 17, 18, 19, 20)
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21. An antenna switching circuit capable of coupling a plurality of ports to an antenna, said antenna switching circuit comprising:
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a first switch activated by a first control signal for establishing a connection between a first transmit port and said antenna;
a second switch activated by a second control signal for establishing a connection between a second transmit port and said antenna;
a third switch activated by a third control signal for establishing a connection between a first receive port and said antenna;
a fourth switch activated by said third control signal for establishing a connection between a second receive port and said antenna, wherein said first receive port and said second receive port are simultaneously connected to said antenna when said third switch and said fourth switch are activated by said third control signal a first control port coupled to a gate of said first switch, said first control port being configured to receive said first control signal;
a second control port coupled to a gate of said second switch, said second control port being configured to receive said second control signal. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification