Duplex filtering
First Claim
1. An arrangement for duplex filtering for signals of each of a plurality of different mobile communication standards, the arrangement comprising:
- antenna means for receiving and transmitting signals;
receiver filtering means for filtering the received signals;
transmitter filtering means for filtering the signals to be transmitted;
wherein the receiver and transmitter filtering means each comprises an array of band pass filters formed on a single substrate, each filter in the receiver filtering means having a frequency pass band that accords with a respective one of the plurality of mobile communications standards, and each filter in the transmitter filtering means having a frequency pass band that accords with a respective one of the plurality of mobile communications standards.
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Accused Products
Abstract
An arrangement for multi-standard duplex filtering for mobile terminals in a telecommunications system. The arrangement includes a substrate on which a first array of filter elements and a second array of filter elements are formed. The filter elements have different frequency bands in accordance with mobile telecommunications standards. The first array filters an incoming signal received from an antenna and provides an output at port in accordance with a matched frequency band of one of the standards. The second array filters a signal to be applied to port in accordance with a matched frequency band of one of the standards prior to transmission through antenna. The filter elements may comprise surface acoustic wave devices formed on a single substrate.
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Citations
9 Claims
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1. An arrangement for duplex filtering for signals of each of a plurality of different mobile communication standards, the arrangement comprising:
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antenna means for receiving and transmitting signals;
receiver filtering means for filtering the received signals;
transmitter filtering means for filtering the signals to be transmitted;
whereinthe receiver and transmitter filtering means each comprises an array of band pass filters formed on a single substrate, each filter in the receiver filtering means having a frequency pass band that accords with a respective one of the plurality of mobile communications standards, and each filter in the transmitter filtering means having a frequency pass band that accords with a respective one of the plurality of mobile communications standards. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A mobile terminal having an arrangement for duplex filtering for signals of each of a plurality of different mobile communication standards, the arrangement comprising:
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antenna means for receiving and transmitting signals;
receiver filtering means for filtering the received signals;
transmitter filtering means for filtering the signals to be transmitted;
whereinthe receiver and transmitter filtering means each comprises an array of band pass filters formed on a single substrate, each filter in the receiver filtering means having a frequency pass band that accords with a respective one of the plurality of mobile communications standards, and each filter in the transmitter filtering means having a frequency pass band that accords with a respective one of the plurality of mobile communications standards.
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Specification