Shared multiband antennas and antenna diversity circuitry for electronic devices
First Claim
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1. A portable electronic device, comprising:
- an antenna structure having a first antenna and a second antenna;
an antenna diversity switch that selectively switches the first and second antennas into use in response to antenna diversity control signals;
radio-frequency transceiver circuitry that transmits and receives radio-frequency signals through the antenna diversity switch, wherein the radio-frequency signals include radio-frequency signals in a first communications band and radio-frequency signals in a second communications band;
a diplexer coupled between the antenna structure and the radio-frequency transceiver circuitry, wherein the diplexer has terminals respectively connected to;
a first path that conveys the radio-frequency signals in the first communications band;
a second path that conveys the radio-frequency signals in the second communications band; and
an antenna path coupled to the antenna diversity switch;
an output amplifier in the second path that is interposed between the radio-frequency transceiver circuitry and the diplexer; and
a two-position switch interposed in the second path and a three-position switch interposed in the first path.
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Abstract
Electronic devices are provided that contain wireless communications circuitry. The wireless communications circuitry may have antenna diversity circuitry that allows an optimum antenna or optimum antennas in an antenna structure to be switched into use during device operations. The antenna structure may be shared between multiple radio-frequency transceivers in a radio-frequency transceiver circuit. The radio-frequency transceiver circuit may be coupled to the antenna structure using switching and filtering circuitry. The filtering circuitry may include one or more diplexers that divide radio-frequency signals into divided signal paths based on frequency. The filtering circuitry may also include low pass, high pass, and bandpass filters that are interposed in the divided signal paths. Switching circuitry in the switching and filtering circuitry may be used to selectively configure the wireless communications circuitry in transmit and receive modes using multiple communications bands.
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Citations
16 Claims
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1. A portable electronic device, comprising:
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an antenna structure having a first antenna and a second antenna; an antenna diversity switch that selectively switches the first and second antennas into use in response to antenna diversity control signals; radio-frequency transceiver circuitry that transmits and receives radio-frequency signals through the antenna diversity switch, wherein the radio-frequency signals include radio-frequency signals in a first communications band and radio-frequency signals in a second communications band; a diplexer coupled between the antenna structure and the radio-frequency transceiver circuitry, wherein the diplexer has terminals respectively connected to; a first path that conveys the radio-frequency signals in the first communications band; a second path that conveys the radio-frequency signals in the second communications band; and an antenna path coupled to the antenna diversity switch; an output amplifier in the second path that is interposed between the radio-frequency transceiver circuitry and the diplexer; and a two-position switch interposed in the second path and a three-position switch interposed in the first path. - View Dependent Claims (2, 3, 4, 5)
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6. Wireless communications circuitry comprising:
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a 5 GHz radio-frequency transceiver that operates in a 5 GHz communications band and a 2.4 GHz radio-frequency transceiver that operates in a 2.4 GHz band; an antenna structure with first and second antennas; a first bandpass filter that is interposed between the 5 GHz radio-frequency transceiver and the antenna structure; a second bandpass filter that is interposed between the 2.4 GHz radio-frequency transceiver and the antenna structure; an antenna diversity switch, wherein the antenna diversity switch has terminals respectively coupled to; the first antenna; the second antenna; the first bandpass filter; and the second bandpass filter; and a two-position switch and a three-position switch. - View Dependent Claims (7, 8, 9, 10)
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11. An electronic device comprising:
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a housing; transceiver circuitry in the housing that handles wireless local area network radio-frequency signals at 5 GHz and radio-frequency signals at 2.4 GHz; an antenna structure in the housing with first and second antennas; a cellular telephone transceiver and cellular telephone antenna in the housing; a diplexer coupled between the antenna structure and the radio-frequency transceiver circuitry; and an antenna diversity switch, wherein the antenna diversity switch has terminals respectively coupled to; the first antenna; the second antenna; the diplexer; and a path coupled to the transceiver circuitry that bypasses the diplexer and that does not pass through a diplexer in the electronic device, wherein the antenna diversity switch is at least operable to simultaneously couple the first antenna to a first one of the diplexer and the path that bypasses the diplexer and couple the second antenna to a second one of the diplexer and the path that bypasses the diplexer. - View Dependent Claims (12, 16)
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13. An electronic device comprising:
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a housing; transceiver circuitry in the housing that handles wireless local area network radio-frequency signals at 5 GHz and radio-frequency signals at 2.4 GHz; an antenna structure in the housing with first and second antennas; a cellular telephone transceiver and cellular telephone antenna in the housing; a diplexer coupled between the antenna structure and the radio-frequency transceiver circuitry; an antenna diversity switch, wherein the antenna diversity switch has terminals respectively coupled to; the first antenna; the second antenna; the diplexer; and a path coupled to the transceiver circuitry that bypasses the diplexer; and a two-position switch with terminals respectively coupled to; the diplexer; a first path that conveys the radio-frequency signals at 5 GHz to the transceiver circuitry from the antenna structure; and a second path that conveys the radio-frequency signals at 5 GHz from the transceiver circuitry to the antenna structure.
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14. An electronic device comprising:
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a housing; transceiver circuitry in the housing that handles wireless local area network radio-frequency signals at 5 GHz and radio-frequency signals at 2.4 GHz; an antenna structure in the housing with first and second antennas; a cellular telephone transceiver and cellular telephone antenna in the housing; a diplexer coupled between the antenna structure and the radio-frequency transceiver circuitry; an antenna diversity switch, wherein the antenna diversity switch has terminals respectively coupled to; the first antenna; the second antenna; the diplexer; and a path coupled to the transceiver circuitry that bypasses the diplexer; and first, second, and third two-position switches, wherein the first two-position switch has terminals coupled to; the diplexer; a first path that conveys the radio-frequency signals at 2.4 GHz from the transceiver circuitry to the antenna structure; and the second two-position switch, wherein the second two-position switch has terminals coupled to; the first two-position switch; a second path that conveys the radio-frequency signals at 2.4 GHz to the transceiver circuitry from the antenna structure; and the third two-position switch, and wherein the third two-position switch has terminals coupled to; the second two-position switch; the antenna structure; and a third path that conveys the radio-frequency signals at 2.4 GHz from the transceiver circuitry to the antenna structure.
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15. An electronic device comprising:
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a housing; transceiver circuitry in the housing that handles wireless local area network radio-frequency signals at 5 GHz and radio-frequency signals at 2.4 GHz; an antenna structure in the housing with first and second antennas; a cellular telephone transceiver and cellular telephone antenna in the housing; a diplexer coupled between the antenna structure and the radio-frequency transceiver circuitry; an antenna diversity switch, wherein the antenna diversity switch has terminals respectively coupled to; the first antenna; the second antenna; the diplexer; and a path coupled to the transceiver circuitry that bypasses the diplexer; and first, second, and third two-position switches, wherein the first two-position switch is configurable in; a first configuration in which the diplexer is coupled to a first path that conveys the radio-frequency signals at 2.4 GHz from the transceiver circuitry to the antenna structure; and a second configuration in which the diplexer is coupled to a first terminal in the second two-position switch, wherein the second two-position switch is configurable in; a first configuration in which the first terminal is coupled to a second path that conveys the radio-frequency signals at 2.4 GHz to the transceiver circuitry from the antenna structure; and a second configuration in which the second path is coupled to a second terminal in the second two-position which, and wherein the third two-position switch is configurable in; a first configuration in which the antenna structure is coupled to the path that bypasses the diplexer; and a second configuration in which the antenna structure is coupled to the second terminal.
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Specification
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Current AssigneeApple Inc.
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Original AssigneeApple Inc.
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InventorsLum, Nicholas W., Sanguinetti, Louie J.
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Primary Examiner(s)Hiltunen, Thomas J
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Application NumberUS12/421,178Publication NumberTime in Patent Office1,174 DaysField of Search455/78US Class Current455/78CPC Class CodesH04B 1/0057 using diplexing or multiple...H04B 1/48 in circuits for connecting ...
