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Duplex filtering

  • US 6,724,278 B1
  • Filed: 11/13/2001
  • Issued: 04/20/2004
  • Est. Priority Date: 01/19/1999
  • Status: Expired due to Fees
First Claim
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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:

  • 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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