Multiband or multimode front end antenna switch
First Claim
1. An antenna switch module for use in a multiband communication device comprising:
- an input/output port configured to connect to an antenna;
an antenna diplexer connected to the input/output port, the diplexer configured to pass outgoing signals to the antenna and direct incoming signal from the antenna to one of two or more paths;
one or more switches connected to the diplexer, the one or more switches, responsive to two or fewer control signals, being configured to selectively enable operation of the antenna switch module into transmit or receive mode;
one or more diplexers in addition to the antenna diplexer connected to at least one output of the one or more switches;
a filter bank connected to the one or more switches and one or more diplexers, wherein the filter bank comprises two or more filters and is configured to selectively filter incoming and outgoing signals in a frequency dependent manner to tailor operation for a particular band.
1 Assignment
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Accused Products
Abstract
A multi-band communication device with a front end antenna switch module having a reduced number of control inputs is disclosed. Control over an antenna switch modules occurs via control inputs from a controller or processor to enable operation over multiple bands or under numerous different standards. In one embodiment an input/output port is configured to connect to an antenna and a diplexer is connected to the input/output port. In this embodiment, the diplexer is configured to pass outgoing signals to the antenna and direct incoming signal from the antenna to one of two or more paths. One or more switches are connected to the diplexer such that the one or more switches are responsive to two or fewer control signals. The switch are configured to selectively enable operation of the antenna switch module into transmit or receive mode. A filter bank may also be provided as part of the module.
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Citations
20 Claims
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1. An antenna switch module for use in a multiband communication device comprising:
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an input/output port configured to connect to an antenna; an antenna diplexer connected to the input/output port, the diplexer configured to pass outgoing signals to the antenna and direct incoming signal from the antenna to one of two or more paths; one or more switches connected to the diplexer, the one or more switches, responsive to two or fewer control signals, being configured to selectively enable operation of the antenna switch module into transmit or receive mode; one or more diplexers in addition to the antenna diplexer connected to at least one output of the one or more switches; a filter bank connected to the one or more switches and one or more diplexers, wherein the filter bank comprises two or more filters and is configured to selectively filter incoming and outgoing signals in a frequency dependent manner to tailor operation for a particular band. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A multi-band antenna switch module comprising:
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an input/output port configured to connect to an antenna; a first diplexer connected to the input port configured to direct an incoming signal based on frequency of the incoming signal; a first switch, responsive to a control signal, configured to receive incoming signals in a first frequency band from the first diplexer and selectively output the incoming signals to a second diplexer and at least one of one or more filters; a second switch, responsive to a control signal, configured to receive incoming signals in a second frequency band from the first diplexer and selectively output the incoming signals to a third diplexer and at least one of one or more filters; wherein the second diplexer connects to the first switch and is configured to selectively route incoming signals from the first switch to one or more filters filter based on the frequency of the incoming signal; wherein the third diplexer configured to selectively route incoming signals from the second switch to one or more filters e filter based on the frequency of the incoming signal; and wherein the one or more filters connected to the second and third diplexer, are configured to selectively pass incoming signals. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method for interfacing an antenna to any one of three one or more amplifier stages in a multi-band communication device comprising:
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receiving an incoming signal via an antenna; providing the incoming signal to a first diplexer wherein the first diplexer selectively directs the incoming signal to one or more switches; providing two or fewer control signals to the one or more switches to selectively route the incoming signal responsive to a transmit mode or receive mode wherein during receive mode the one or more switches route the incoming signal to a second diplexer, a third diplexer, or both; selectively directing the incoming signal, with the second diplexer or the third diplexer, to a filter tailored to the frequency band of the incoming signal; and filtering the incoming signal with the filter tailored to the frequency band of the incoming signal to create a filtered signal and providing the incoming signal to the amplifier stage; wherein the method of interfacing the incoming signal to any one of the three or more amplifier stages requires two or fewer control signals. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification