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US 7,116,952 B2Granted
Method and apparatus to provide an area efficient antenna diversity receiver
AssigneeIntel Corporation
InventorMohamed Arafa
Life of this patent
Estimating the term…
Abstract
A receiver for use in a system implementing antenna diversity uses a switch to allow multiple filters to share a low noise amplifier (LNA).
Claims30
An antenna diversity receiver comprising:
- an antenna terminal;
- a first filter;
- a second filter;
- a third filter;
- a selector switch having a first switch position to couple said antenna terminal to an input of said first filter, a second switch position to couple said antenna terminal to an input of said second filter, and a third switch position to couple said antenna terminal to an input of said third filter;
- a first low noise amplifier (LNA);
- a second LNA;
- a first output switch having a first switch position to couple an output of said first filter to an input of said first LNA and a second switch position to couple an output of said second filter to said input of said first LNA;
- and
- a second output switch having a first switch position to couple an output of said third filter to an input of said second LNA.
7 more elements
A receiver comprising:
- a first antenna terminal;
- a first plurality of filters;
- a first selector switch to controllably couple said first antenna terminal to an input of a selected one of the filters in said first plurality of filters;
- at least one first low noise amplifier (LNA);
- at least one first output switch to controllably couple an output of said selected one of said filters in said first plurality of filters to an input of a corresponding first LNA;
- a second antenna terminal;
- a second plurality of filters;
- a second selector switch to controllably couple said second antenna terminal to an input of a selected one of the filters in said second plurality of filters;
- at least one second LNA;
- and
- at least one second output switch to controllably couple an output of said selected one of said filters in said second plurality of filters to an input of a corresponding second LNA;
- wherein said first and second antenna terminals, said first and second pluralities of filters, said first and second selector switches, said at least one first output switch, and said at least one second output switch are located within a common module and said at least one first LNA and said at least one second LNA are located on a separate semiconductor chip that is coupled to said module.
9 more elements
A module for use within an antenna diversity receiver system, comprising:
- a first antenna terminal;
- a first plurality of filters, said first plurality of filters including at least a first filter, second filter, a third filter, and a fourth filter;
- a first selector switch to controllably couple said first antenna terminal to an input of a selected one of the filters in said first plurality of filters;
- a first output terminal for connection to a first external low noise amplifier (LNA);
- a second output terminal for connection to a second external LNA;
- a first output switch having a first switch position to couple an output of said first filter to said first output terminal and a second switch position to couple an output of said second filter to said first output terminal;
- and
- a second output switch having a first switch position to couple an output of said third filter to said second output terminal and a second switch position to couple an output of said fourth filter to said second output terminal.
5 more elements
A system comprising:
- a first patch antenna;
- a second patch antenna;
- and
- a receiver comprising:
- a first antenna terminal coupled to said first patch antenna;
- a first plurality of filters;
- a first selector switch to controllably couple said first antenna terminal to an input of a selected one of the filters in said first plurality of filters;
- at least one first low noise amplifier (LNA);
- at least one first output switch to controllably couple an output of said selected one of said filters in said first plurality of filters to an input of a corresponding first LNA;
- a second antenna terminal coupled to said second patch antenna;
- a second plurality of filters;
- a second selector switch to controllably couple said second antenna terminal to an input of a selected one of the filters in said second plurality of filters;
- at least one second LNA;
- and
- at least one second output switch to controllably couple an output of said selected one of said filters in said second plurality of filters to an input of a corresponding second LNA;
- wherein said at least one first LNA includes two or more LNAs and said at least one first output switch includes two or more output switches.
13 more elements
A method for use in an antenna diversity receiver comprising:
- when operation within a first frequency band is desired:
- coupling a first antenna to an input of a first filter associated with said first antenna;
- and
- coupling an output of said first filter associated with said first antenna to an input of a first low noise amplifier (LNA) associated with said first antenna;
- when operation within a second frequency band is desired:
- coupling said first antenna to an input of a second filter associated with said first antenna;
- and
- coupling an output of said second filter associated with said first antenna to said input of said first LNA associated with said first antenna;
- and when operation within a third frequency band is desired:
- coupling said first antenna to an input of a third filter associated with said first antenna;
- and
- coupling an output of said third filter associated with said first antenna to an input of a second LNA associated with said first antenna.
9 more elements
Dependencies are inferred from the claim text.