Diplexer
First Claim
1. A diplexer comprising:
- first means coupled to an input node for receiving a composite signal having first and second component signals at first and second frequencies respectively and for passing the first signal and providing an open circuit to the second signal and second means coupled to the input node for receiving the composite signal and passing the second signal and providing an open circuit to the first signal.
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Accused Products
Abstract
A diplexer for providing an efficient, low cost, passive, reliable system and method for sharing a single antenna between a cellular subsystem and a GPS subsystem. The inventive diplexer includes first and second devices coupled to an input node for receiving a composite signal having first and second component signals at first and second frequencies respectively. In accordance with the invention, the first device passes the first signal and provides an open circuit to the second signal, while the second device passes the second signal and provides an open circuit to the first signal. In the illustrative embodiment, the first and second devices are first and second transmission lines respectively. The transmission lines may be of any type, i.e., microstrip, stripline, coplanar waveguide etc.
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Citations
16 Claims
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1. A diplexer comprising:
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first means coupled to an input node for receiving a composite signal having first and second component signals at first and second frequencies respectively and for passing the first signal and providing an open circuit to the second signal and second means coupled to the input node for receiving the composite signal and passing the second signal and providing an open circuit to the first signal. - View Dependent Claims (2, 3, 4, 5)
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6. A communication system comprising:
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an antenna;
a diplexer connected to the antenna, the diplexer having;
first means coupled to the antenna for receiving a composite signal having first and second component signals at first and second frequencies respectively and for passing the first signal and providing an open circuit to the second signal and second means coupled to the antenna for receiving the composite signal and passing the second signal and providing an open circuit to the first signal;
a first circuit connected to the first means; and
a second circuit connected to the second means. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for separating signals received from a shared antenna including the steps of:
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first means coupled to the antenna for receiving a composite signal having first and second component signals at first and second frequencies respectively and for passing the first signal and providing an open circuit to the second signal and second means coupled to the antenna for receiving the composite signal and passing the second signal and providing an open circuit to the first signal.
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Specification