Test station for wireless devices and methods for calibration thereof

摘要

A test station for wireless devices and methods for calibration thereof. The test station includes a signal generator, a calibrator, a scanner having receiving and transmitting antennas, a signal analyzer, and a computer. Under the direction of the computer, the signal generator generates a calibration signal in accordance with a programmable calibration signal script. The calibrator may be used to emulate either a wireless device in transmit mode by transmitting the calibration signal to the scanner for analysis by the signal analyzer, or a wireless device in receive mode by receiving the calibration signal from the scanner for analysis by the signal analyzer. The behavior of the test station is calibrated by correlating signal parameters of the calibration signal as specified by the calibration signal script and as measured at the signal analyzer.

主权项

1. A test station for testing a wireless device in transmit mode, the test station comprising:
(a) a signal generator for generating a conducted calibration signal; (b) a calibrator comprising at least one calibrator antenna conductively connected to the signal generator for wirelessly transmitting the calibration signal; (c) a wireless scanner comprising at least one receiving antenna for wirelessly receiving the calibration signal; (d) a signal analyzer conductively connected to the receiving antenna for receiving and measuring the power level of the calibration signal; (e) a computer comprising:
(i) a memory for storing a calibration signal file encoding for a target transmit power level of the calibration signal at the calibrator antenna, and a set of program instructions implementing a method comprising the steps of:
providing a signal path comprising a conducted path from the signal generator to the calibrator antenna, a wireless path from the calibrator antenna to the receiving antenna, and a conducted path from the receiving antenna to the signal analyzer;providing a calibration signal script encoding for a calibration signal having a target transmit power level at the calibrator antenna;using the signal generator to generate the calibration signal through the signal path;using the signal analyzer to measure the power level of the calibration signal; andcorrelating the target transmit power level of the calibration signal to the measured power level of the calibration signal;(ii) a processor operatively connected to the memory, the signal generator, and the signal analyzer, the processor configured for executing the set of program instructions.