FRONT END MODULE WITH ACTIVE TUNING OF A BALANCING NETWORK
First Claim
1. A radio front end comprises:
- a duplexer operably coupled to an antenna, wherein the duplexer is operable to provide electrical isolation between an outbound wireless signal and an inbound wireless signal;
a tunable balancing network operably coupled to the duplexer and operable to establish an impedance that substantially matches an impedance of the antenna based on a tuning signal;
a detector module operable to generate an error signal based on an electrical performance characteristic of the duplexer;
a processing module operable to generate the tuning signal based on the error signal.
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Accused Products
Abstract
A radio front end includes a duplexer, a tunable balancing network, a detector module, and a processing module. The duplexer is operably coupled to an antenna and is operable to provide electrical isolation between an outbound wireless signal and an inbound wireless signal. The tunable balancing network is operably coupled to the duplexer and operable to establish an impedance that substantially matches an impedance of the antenna based on a tuning signal. The detector module is operable to generate an error signal based on an electrical performance characteristic of the duplexer. The processing module is operable to generate the tuning signal based on the error signal.
54 Citations
19 Claims
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1. A radio front end comprises:
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a duplexer operably coupled to an antenna, wherein the duplexer is operable to provide electrical isolation between an outbound wireless signal and an inbound wireless signal; a tunable balancing network operably coupled to the duplexer and operable to establish an impedance that substantially matches an impedance of the antenna based on a tuning signal; a detector module operable to generate an error signal based on an electrical performance characteristic of the duplexer; a processing module operable to generate the tuning signal based on the error signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A front end module comprises:
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a duplexer operably coupled to an antenna, wherein the duplexer is operable to provide electrical isolation between an outbound wireless signal and an inbound wireless signal; and a tunable balancing network operably coupled to the duplexer and operable to establish an impedance that substantially matches an impedance of the antenna based on a tuning signal, which is based on an electrical performance characteristic of the duplexer. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A radio transceiver module comprises:
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a detector module operable to generate an error signal based on an electrical performance characteristic of a duplexer;
wherein the duplexer is operably coupled to an antenna and is operable to provide electrical isolation between an outbound wireless signal and an inbound wireless signal; anda processing module operable to generate the tuning signal based on the error signal and to provide the tuning signal to a tunable balancing network, wherein the tunable balancing network is operably coupled to the duplexer and operable to establish an impedance that substantially matches an impedance of the antenna based on the tuning signal. - View Dependent Claims (17, 18, 19)
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Specification