Wireless device isolation in a controlled RF test environment
First Claim
1. A system for isolating a device that uses a peripheral bus for data communication, said system comprising:
- an RF isolation enclosure, including an access door for insertion and removal of said device;
a peripheral bus connector inside said RF isolation enclosure, to connect to said device;
a peripheral bus signal path, connected to said peripheral bus connector, said peripheral bus signal path traversing from inside said RF isolation enclosure to outside of said RF isolation enclosure, said peripheral bus signal path to connect said device to a peripheral bus of a processor;
wherein said peripheral bus signal path includes RF filtering components to reduce undesired RF signals on said peripheral bus signal path as it traverses from inside said RF isolation enclosure to outside of said RF isolation enclosure.
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Accused Products
Abstract
A system and method for testing wireless devices in a simulated a wireless environment is provided. RF modules for creating and receiving RF signals in a test environment are also provided. Features include RF isolation of a wireless device, including filtering signals on electrical paths to and from the device, and circuits to reduce undesired RF signals on such electrical paths, for example PCI bus paths. The system and method also include a test enclosure with isolation chambers with filtered electrical signal paths to allow testing of wireless devices inserted into the isolation chambers. This system and method also allows controlled testing of antennae diversity features of the wireless device.
146 Citations
35 Claims
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1. A system for isolating a device that uses a peripheral bus for data communication, said system comprising:
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an RF isolation enclosure, including an access door for insertion and removal of said device;
a peripheral bus connector inside said RF isolation enclosure, to connect to said device;
a peripheral bus signal path, connected to said peripheral bus connector, said peripheral bus signal path traversing from inside said RF isolation enclosure to outside of said RF isolation enclosure, said peripheral bus signal path to connect said device to a peripheral bus of a processor;
wherein said peripheral bus signal path includes RF filtering components to reduce undesired RF signals on said peripheral bus signal path as it traverses from inside said RF isolation enclosure to outside of said RF isolation enclosure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for isolating a device that uses a peripheral bus for data communication, said system comprising:
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an RF isolation enclosure, including an access door for insertion and removal of said device;
a peripheral bus connector inside said RF isolation enclosure, to connect to said device;
a processor;
a peripheral bus signal path, connected to said peripheral bus connector, said peripheral bus signal path traversing from inside said RF isolation enclosure to outside of said RF isolation enclosure, said peripheral bus signal path to connect said device to a peripheral bus of said processor, wherein said peripheral bus signal path includes RF filtering components to reduce undesired RF signals on said peripheral bus signal path as it traverses from inside said RF isolation enclosure to outside of said RF isolation enclosure;
an RF port, to provide an RF signal path from said device inside said RF isolation enclosure to outside said RF isolation enclosure, wherein said RF signal path outside of said RF isolation enclosure then passes through an RF signal attenuation component; and
a carrier card component that can be inserted into said RF isolation enclosure, said carrier card component including;
a device connector, to connect to a peripheral bus connection on said device;
a bus signal path from said device connector to an interface bridge component, a second bus signal path from said interface bridge component to a second connector, said second connector to connect to said peripheral bus connector inside said RF isolation enclosure when said carrier card component is inserted into said RF isolation enclosure; and
an RF connector that automatically connects to said RF port when said carrier card component is inserted into said RF isolation enclosure, and an RF signal path from said RF connector to said device.
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15. A carrier card component, to allow testing of a device that uses a peripheral bus for data communication, said carrier card component comprising:
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a device holding component to physically hold said device to said carrier card component;
a device connector, to connect to a data port on said device;
an interface bridge component, electrically connected to said device connector, said interface bridge component to interface data signals between said device and said peripheral bus; and
a second connector, electrically connected to said interface bridge component, said second connector to connect to said peripheral bus. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method for attenuating undesired RF signals on a plurality of electrical signal paths, comprising:
for each signal path, passing said signal path through a first filtering component, said first filtering component positioned within a first RF shielded chamber, then passing said signal path along a shielded signal path to a second filtering component, said second filtering component positioned within a second RF shielded chamber, said second RF shielded chamber separate from said first RF shielded chamber. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A system for attenuating undesired RF signals on a plurality of electrical signal paths, comprising:
a printed circuit board including a plurality of signal paths, wherein each signal path passes through a first filtering component, said first filtering component positioned within a first RF shielded chamber, then each signal path passes through a shielded signal path to a second filtering component, said second filtering component positioned within a second RF shielded chamber, said second RF shielded chamber separate from said first RF shielded chamber. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A system for testing a wireless device with a plurality of antenna ports, said system comprising:
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an RF isolation enclosure, including an access door for insertion and removal of said device;
a plurality of RF ports, to provide RF signal paths from each antenna port on said device inside said RF isolation enclosure to outside said RF isolation enclosure, wherein at least one of said RF signal path passes through an RF signal attenuation component; and
wherein said RF signal attenuation component is adjusted to provide a different RF signal strength at one of said plurality of antenna ports on said device. - View Dependent Claims (34, 35)
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Specification