Receiving circuit
AssigneeKabushiki Kaisha Toshiba
InventorTadashi KANEMARU
Life of this patent
Estimating the term…
Abstract
A receiving circuit includes a plurality of filter circuits connectable between a first terminal and a second terminal. Each of the filter circuits is configured to pass a different frequency band. A first switching portion is configured to selectively connect one of the filter circuits to the first and second terminals. A node is between the first switching portion and the second terminal and a second switching portion is configured to connect the node to one of a plurality of third terminals that respectively corresponds to the plurality of filter circuits.
Claims23
A receiving circuit, comprising:
- a plurality of filter circuits connectable between a first terminal and a second terminal, each of the plurality of filter circuits configured to pass a different frequency band;
- a first switching portion configured to selectively connect one of the plurality of filter circuits to the first and second terminals;
- a node between the first switching portion and the second terminal;
- a second switching portion configured to connect the node to one of a plurality of third terminals respectively corresponding to the plurality of filter circuits;
- and
- a plurality of impedance matching elements each respectively connected to a corresponding one of the plurality of third terminals, wherein
- the impedance matching elements provide an impedance match between an output impedance of the first switching portion and an input impedance of the second terminal, and
- each of the plurality of impedance matching elements is a transmission line having at least one of a length, width, or thickness that is different from that of the other transmission lines.
-5. (canceled)
A receiving circuit, comprising:
- a plurality of filter circuits each configured to pass a signal in a different frequency band;
- a first switching portion between a first terminal and a second terminal and configured to selectively connect one of the plurality of filter circuits between the first and second terminals;
- a plurality of impedance matching elements each respectively corresponding to one of the plurality of filter circuits;
- and
- a second switching portion configured to connect one of the plurality of impedance matching elements to a node between the first switching portion and the second terminal according to a selected one of the plurality of filter circuits, wherein
- each of the plurality of impedance matching elements is a transmission line having at least one of a length, width, or thickness that is different from that of the other transmission lines.
(canceled)
(canceled)
A semiconductor device, comprising:
- a plurality of filter circuits connectable between a first terminal and a second terminal;
- a first switching portion between the first terminal and the second terminal configured to selectively connect one of the plurality of filter circuits to the first and second terminals;
- a second switching portion configured to connect a node between the first switching portion and the second terminal configured to one of a plurality of third terminals that corresponds to the plurality of filter circuits;
- and
- a plurality of impedance matching elements connected to the plurality of third terminals and corresponding to the plurality of filter circuits, wherein
- each of the plurality of impedance matching elements is a transmission line having at least one of a length, width, or thickness that is different from that of the other transmission lines.
(canceled)
Dependencies are inferred from the claim text.