System and methods for performing antenna transmit diversity
First Claim
1. A wireless electronic device, comprising:
- first and second antennas;
transceiver circuitry;
an antenna switching circuit configured to route radio-frequency transmission signals from the transceiver circuitry to a selected antenna of the first and second antennas; and
switching circuitry coupled between the antenna switching circuit and the first and second antennas, wherein the switching circuitry is operable to repeatedly toggle between a first configuration in which radio-frequency reception signals are routed from the first and second antennas to the transceiver circuitry and a second configuration in which the radio-frequency transmission signals are provided from the antenna switching circuit to the selected antenna.
1 Assignment
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Accused Products
Abstract
A wireless electronic device may include switching circuits that perform time division duplexing by toggling between a first configuration in which radio-frequency signals received from antennas are routed to the transceivers and a second configuration in which the antennas are coupled to antenna switching circuitry. The antenna switching circuitry may receive radio-frequency transmission signals from the transceivers and route the transmission signals to a selected one of the antennas. The antenna switching circuitry may be controlled by control circuitry such as baseband circuitry and/or storage and processing circuitry on the device. The antenna switching circuitry may be controlled to accommodate antenna transmit diversity without affecting reception of radio-frequency signals, because the switching circuits that perform time division duplexing may form signal reception paths that are unaffected by the configuration of the antenna switching circuitry.
277 Citations
20 Claims
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1. A wireless electronic device, comprising:
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first and second antennas; transceiver circuitry; an antenna switching circuit configured to route radio-frequency transmission signals from the transceiver circuitry to a selected antenna of the first and second antennas; and switching circuitry coupled between the antenna switching circuit and the first and second antennas, wherein the switching circuitry is operable to repeatedly toggle between a first configuration in which radio-frequency reception signals are routed from the first and second antennas to the transceiver circuitry and a second configuration in which the radio-frequency transmission signals are provided from the antenna switching circuit to the selected antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of operating a wireless electronic device having first and second antennas, the method comprising:
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with switching circuitry having a plurality of receive ports and a plurality of transmit ports, routing radio-frequency signals received from the first and second antennas to a selected receive port of the plurality of receive ports during a first time period; and with the switching circuitry, routing radio-frequency transmit signals received at the transmit ports to a selected antenna of the first and second antennas during a second time period. - View Dependent Claims (10, 11, 12, 13, 14)
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15. Wireless communications circuitry that wirelessly communicates using at least first and second antennas, the wireless communications circuitry comprising:
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transceiver circuitry configured to repeatedly toggle between wireless reception operations and wireless transmission operations; and switching circuitry configured to provide radio-frequency transmit signals from the transceiver circuitry to a selected antenna of the first and second antennas during the wireless transmission operations and further configured to route radio-frequency receive signals from the first and second antennas to the transceiver circuitry during wireless reception operations. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification