| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a testing device capable of conducting communication tests in multiple different communication methods, without having to change the existing hardware and rewrite the FPGA program. <P>SOLUTION: A testing device 100 capable of conducting transmission tests in multiple different communication methods is equipped with a phase modulator 2 for modulating an input test signal by means of a phase modulation method to be used in a test communication method, at test signal input in a test communication method among the multiple different communication methods; a phase shifter 4 for shifting the phase of the corresponding signal by a predefined amount according to the test communication method each time the modulated signal is input; and an I-Q signal divider 5 for dividing the phase-shifted signal into I and Q components, Laurent filters 7a, 7b for shaping the respective signals of the I and Q components, and a compositing module 12 for compositing the shaped signals of the I and Q components as a transmission signal. <P>COPYRIGHT: (C)2008,JPO&INPIT |
