SYSTEM AND METHOD FOR TESTING RADIO FREQUENCY WIRELESS SIGNAL TRANSCEIVERS USING WIRELESS TEST SIGNALS
First Claim
1. An apparatus including a system to facilitate wireless testing of a radio frequency (RF) signal transceiver device under test (DUT), comprising:
- a structure defining interior and exterior regions and configured to allow placement of a DUT within said interior region and to be substantially isolated from electromagnetic radiation originating from said exterior region;
a plurality of antennas disposed at least partially within said interior region to receive at least one plurality of wireless RF test signals related to a common RF test signal radiated from said DUT; and
RF signal control circuitry coupled to said plurality of antennas and responsive to said at least one plurality of wireless RF test signals bycontrolling, in accordance with one or more phase control signals, respective phases of at least a portion of said at least one plurality of wireless RF test signals to provide at least one plurality of phase-controlled RF test signals, andmeasuring and combining said at least one plurality of phase-controlled RF test signals to provide said one or more phase control signals and a RF output signal related to a combination of said at least one plurality of phase-controlled RF test signals.
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Accused Products
Abstract
A system and method for facilitating wireless testing of a radio frequency (RF) signal transceiver device under test (DUT). Using multiple antennas within a shielded enclosure containing the DUT, multiple wireless RF test signals resulting from a RF test signal radiated from the DUT can be captured and have their respective signal phases controlled in accordance with one or more signal characteristics, including their respective signal power levels, their respective signal phases as received, and a signal power level of a combination of the received signals. Such phase control of the captured wireless RF test signals can be performed individually for any DUT tested within the shielded enclosure, thereby providing compensation for the multipath signal environment within the shielded enclosure irrespective of the placement of the DUT, and thereby simulating a wired test signal path during wireless testing of the DUT.
161 Citations
18 Claims
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1. An apparatus including a system to facilitate wireless testing of a radio frequency (RF) signal transceiver device under test (DUT), comprising:
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a structure defining interior and exterior regions and configured to allow placement of a DUT within said interior region and to be substantially isolated from electromagnetic radiation originating from said exterior region; a plurality of antennas disposed at least partially within said interior region to receive at least one plurality of wireless RF test signals related to a common RF test signal radiated from said DUT; and RF signal control circuitry coupled to said plurality of antennas and responsive to said at least one plurality of wireless RF test signals by controlling, in accordance with one or more phase control signals, respective phases of at least a portion of said at least one plurality of wireless RF test signals to provide at least one plurality of phase-controlled RF test signals, and measuring and combining said at least one plurality of phase-controlled RF test signals to provide said one or more phase control signals and a RF output signal related to a combination of said at least one plurality of phase-controlled RF test signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of facilitating wireless testing of a radio frequency (RF) signal transceiver device under test (DUT), comprising:
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providing a structure defining interior and exterior regions and configured to allow placement of a DUT within said interior region and to be substantially isolated from electromagnetic radiation originating from said exterior region; providing a plurality of antennas disposed at least partially within said interior region to receive at least one plurality of wireless RF test signals related to a common RF test signal radiated from said DUT; and responding to said at least one plurality of wireless RF test signals by controlling, in accordance with one or more phase control signals, respective phases of at least a portion of said at least one plurality of wireless RF test signals to provide at least one plurality of phase-controlled RF test signals, and measuring and combining said at least one plurality of phase-controlled RF test signals to provide said one or more phase control signals and a RF output signal related to a combination of said at least one plurality of phase-controlled RF test signals. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification