ADAPTIVE MULTI-CARRIER FILTER RESPONSE SYSTEMS AND METHODS

摘要

The present subject matter relates to devices, systems, and methods that provide a programmable filter response in a wireless frequency division duplex system. In particular, in some embodiments, a tunable diplex filter for such a system includes a first tunable filter in communication between an input node and a first output node, the first tunable filter being tunable to define a first tunable pass band configured to have a minimum pass band insertion loss at frequencies that are higher than a first reject band, and a second tunable filter in communication between the input node and a second output node, the second tunable filter being tunable to define a second tunable pass band configured to have a minimum pass band insertion loss at frequencies that are lower than the first reject band.

主权项

1. A tunable diplex filter for a wireless frequency division duplex system, the tunable diplex filter comprising:
a diplexer in communication between an input node and first and second output nodes, the diplexer being configured to separate signals present at the input node into a first signal to the first output node and a second signal to the second output node; a first tunable filter in communication between the diplexer and the first output node, the first tunable filter being selectively tunable to define a first reject band and a first tunable pass band configured to have a minimum pass band insertion loss at any of a range of frequencies that are higher than the first reject band; and a second tunable filter in communication between the diplexer and the second output node, the second tunable filter being selectively tunable to define a second reject band and a second tunable pass band configured to have a minimum pass band insertion loss at any of a variety of frequencies that are lower than the first reject band.