Anritsu Corporation

Chihiro Tagawa

Takayuki Saito

Tomohisa Okada

Takayuki Morikawa

Takashi Seike

Yuji Honma

Mamoru Akada

Masami Hanatatsu

A radio communication analyzer can test a radio device under test which corresponds to one of a plurality of types of digital communication systems in accordance with the digital communication system to which the radio device under test corresponds. The radio communication analyzer includes a modulation section, a demodulation section, a modulation/demodulation processing section, and a control section. The modulation section has a first rewritable memory, and converts modulation data indicating the contents of a first test signal to be transmitted to the radio device under test into a digital modulated signal by executing a program written in the first memory. The demodulation section has a second rewritable memory, and generates demodulated data from a second test signal received from the radio device under test by executing a program written in the second memory. The modulation/demodulation processing section has a third memory. The modulation/demodulation processing section generates data to be input to the modulation section and processes the demodulated data obtained by the demodulation section on the basis of a protocol for the digital communication system used by the radio device under test by executing a program written in the third memory. The control section reads out program data corresponding to the respective types of digital communication systems and stored in a storage unit and writes the program data in the first, second, and third memories.

Radio communication analyzer suited for measurement of plurality of

Instrument for measuring leakage power leaking to adjacent channel

A radio communication analyzer tests the signal characteristics of a carrier, as a target signal to be tested, which has undergone quadrature modulation using a digital data signal output from a radio unit to be tested. A quadrature demodulation section performs quadrature demodulation of the target signal and outputs a baseband signal. A storage section stores the waveform data of the baseband signal. A clock synchronous detection section detects clock synchronization information contained in the target signal based on the waveform data. A demodulation section sequentially reads out the waveform data and obtains demodulated digital data in accordance with the clock synchronization information. A burst synchronous detection section generates burst synchronization information representing a burst start position of the target signal on the basis of the demodulated digital data or the waveform data.

Radio communication analyzer having collective measurement function of

Transmission timing measuring apparatus

Growing community of inventors

Isehara, Japan

Chihiro Tagawa