SYSTEM AND METHOD FOR TESTING WIDE BAND DATA PACKET SIGNAL TRANSCEIVERS USING NARROW BAND TESTERS

摘要

System and method for using multiple data packet signal testers having narrower data packet signal bandwidths for testing multiple data packet signal transmitters having wider data packet signal bandwidths. Using multiple data packet signal testers with narrower receiver bandwidths to process respective portions of the wider bandwidth of the data packet signals produced by the devices under test (DUTs) enables use of lower cost, narrower-bandwidth test equipment to test wide-bandwidth signals.

主权项

1. An apparatus including a system for using multiple data packet signal receivers having narrower data packet signal bandwidths for testing multiple data packet signal transmitters having wider data packet signal bandwidths, comprising:
first and second signal paths for conveying, from one or more devices under test (DUTs), first and second data packet signals having a plurality of data packet signal transmission frequency bandwidths including first and second data packet signal transmission frequency bandwidths, respectively, each of which is no greater than a predetermined frequency bandwidth and is substantially centered about a respective DUT data packet signal carrier frequency intermediate first and second data packet signal carrier frequencies; first and second testers with first and second data packet signal test receivers, respectively, and adapted to operate in a plurality of test modes including a first test mode with first and second data packet signal reception frequency bandwidths, respectively, each of which is less than said predetermined frequency bandwidth, is no less than a half of said predetermined frequency bandwidth and is centered about said first and second data packet signal carrier frequencies, respectively, which are separated by no more than one of said first and second data packet signal reception frequency bandwidths; and signal routing circuitry external to and coupled between said first and second signal paths and said first and second testers, and responsive to one or more routing control signals by routing said first and second data packet signals to said first and second testers, wherein
during a first time interval, a first portion of said first data packet signal is received by one of said first and second testers, and a second portion of said first data packet signal is received by another of said first and second testers, andduring a second time interval, a first portion of said second data packet signal is received by one of said first and second testers, and a second portion of said second data packet signal is received by another of said first and second testers.