Reconfigurable multiplexer
First Claim
1. A multiplexer comprising:
- a filter bank including a plurality of filters;
a bypass circuit including at least one bypass path between an input of the multiplexer and an output of the multiplexer, the at least one bypass path not including the filter bank;
a first switch that electrically connects a first filter from the plurality of filters to the output of the multiplexer based at least in part on a control signal;
a plurality of load circuits, at least a first load circuit of the plurality of load circuits configured to reduce insertion loss in a communication path between the input of the multiplexer and the output of the multiplexer, the communication path including the first filter; and
a second switch that electrically connects the at least one bypass path to the first load circuit based at least in part on the control signal being associated with a first carrier aggregation mode, and connect the at least one bypass path to the output of the multiplexer based at least in part on the control signal being associated with a non-carrier aggregation mode.
0 Assignments
0 Petitions
Accused Products
Abstract
A reconfigurable multiplexer that can support more frequency bands than a traditional multiplexer is disclosed. For example, the reconfigurable multiplexer can handle frequencies of several hundred megahertz up to 10 gigahertz. Further, certain implementations of the reconfigurable multiplexer can reduce or eliminate frequency dead zones that exist with traditional multiplexers. The reconfigurable multiplexer includes a filter bank capable of supporting a number of frequency bands and a bypass circuit that enables the multiplexer to support a variety of sets of frequencies. For instance, unlike traditional multiplexers, the reconfigurable multiplexer can support both frequency bands with relatively narrow spacing and frequency bands with relatively wide spacing. Further, the inclusion of the bypass circuit enables the reduction or elimination of dead zones between supported frequencies.
-
Citations
20 Claims
-
1. A multiplexer comprising:
-
a filter bank including a plurality of filters; a bypass circuit including at least one bypass path between an input of the multiplexer and an output of the multiplexer, the at least one bypass path not including the filter bank; a first switch that electrically connects a first filter from the plurality of filters to the output of the multiplexer based at least in part on a control signal; a plurality of load circuits, at least a first load circuit of the plurality of load circuits configured to reduce insertion loss in a communication path between the input of the multiplexer and the output of the multiplexer, the communication path including the first filter; and a second switch that electrically connects the at least one bypass path to the first load circuit based at least in part on the control signal being associated with a first carrier aggregation mode, and connect the at least one bypass path to the output of the multiplexer based at least in part on the control signal being associated with a non-carrier aggregation mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A transceiver comprising:
-
a power amplifier module including a plurality of power amplifiers; and a multiplexer in communication with the power amplifier module, the multiplexer including a filter bank that includes a plurality of filters, a bypass circuit, a plurality of load circuits, a first switch, and a second switch, the bypass circuit including at least one bypass path between an input of the multiplexer and an output of the multiplexer, the at least one bypass path not including the filter bank, the first switch electrically connecting a first filter from the plurality of filters to the output of the multiplexer based at least in part on a control signal, at least a first load circuit of the plurality of load circuits configured to reduce insertion loss in a communication path between the input of the multiplexer and the output of the multiplexer, the communication path including the first filter, the second switch electrically connecting the at least one bypass path to the first load circuit based at least in part on the control signal being associated with a first carrier aggregation mode and connect the at least one bypass path to the output of the multiplexer based at least in part on the control signal being associated with a non-carrier aggregation mode. - View Dependent Claims (15, 16, 17, 18)
-
-
19. A wireless device comprising:
-
a transceiver including a power amplifier module and a multiplexer, the power amplifier module including a plurality of power amplifiers and the multiplexer in communication with the power amplifier module, the multiplexer including a filter bank that includes a plurality of filters, a bypass circuit, a plurality of load circuits, a first switch, and a second switch, the bypass circuit including at least one bypass path between an input of the multiplexer and an output of the multiplexer, the at least one bypass path not including the filter bank, the first switch electrically connecting a first filter from the plurality of filters to the output of the multiplexer based at least in part on a control signal, at least a first load circuit of the plurality of load circuits configured to reduce insertion loss in a communication path between the input of the multiplexer and the output of the multiplexer, the communication path including the first filter, the second switch electrically connecting the at least one bypass path to the first load circuit based at least in part on the control signal being associated with a particular subset of carrier aggregation modes and connect the at least one bypass path to the output of the multiplexer based at least in part on the control signal being associated with a non-carrier aggregation mode; and a baseband processor configured to provide the control signal to the multiplexer, the control signal determined based at least in part on a communication from a base station. - View Dependent Claims (20)
-
Specification