IHF/Laboratory/MW Lab

MW Laboratory


General

For the work on microwave (and mm-wave) components and systems a lab (streamed by filtered air; 50 m2) is available which is connected to the clean room. This lab room also provides air temperature and humidity controlled working conditions.

Signal generation

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Several single tone signal sources are available covering a frequency range up to 43 GHz. Using our signal multiplier this range can be extended to cover the E-band (60 – 90 GHz).
Evaluating communication systems we use our two channel vector signal generator Rohde & Schwarz SMU. This generator is fully equipped allowing to introduce MIMO fading and other propagation effects onto the transmit signals. Combining this generator with other broadband vector signal generators higher order MIMO transmit signals can be synthesized.
Using the Rohde & Schwarz EXIQ box a direct connection between FPGAs and the vector signal generators can be established.

For the generation of high dynamic wide band baseband signals two AFQ arbitrary signal sources are available supporting 400 Ms/s and 16 bit resolution. Additionally a two-channel arbitrary waveform generator (Tektronix AWG7102) with 10 Gs/s and 10 bit can be provided allowing test signal generation for wide band mm-wave communication or system test. In an interleaved operation mode this two channels can be combined to support a data rate of 20 Gs/s.

Signal analysis

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Several spectrum and signal analyzers are used to capture the frequency response of various output signals. Two Rohde & Schwarz spectral analyzer FSW can be used two synchronously capture the output of a two channel transmitter up to 6 GHz. Together with the signal generators various types of MIMO configurations can be stimulated and analyzed in this way. Both FSWs provide signal analysis capabilities over a bandwidth of 300 MHz. Spectral and signal analysis for a single channel is directly possible up to 26 GHz and using waveguide mixers between 60 and 110 GHz. Additional E- and W-band waveguide components can be provided to implement the required mm-wave measurement setup.

By combining the Rohde & Schwarz spectral analyzer FSW with a Rohde & Schwarz oscilloscope RTO an extension of the signal analysis bandwidth up to 2 GHz is possible.
This oscilloscope is capable of capturing four signals over an input bandwidth of 4 GHz at a sampling rate of 20 Gs/s. Additionally, extension pads for recording 16 digital signals support comprehensive mixed signal analysis. A 6 GHz active probe is used to measured wideband signal directly at a printed circuit board.

Power measurements

Different wideband and average power sensors are used to perform power measurements up to 18 GHz supporting an input power level between 20 dBm and -60 dBm. A thermal power sensor covering the frequency range from DC to 110 GHz allows to verify the output power of all devices available in the laboratory. In this way power corrected measurements can be accomplished by the vector network analyzer up to the mm-wave regime. Combining this measurement capabilities of the power sensor, the vector network analyzer and the wafer prober power corrected measurements up to the probe tip can be accomplished up to 110 GHz.

Contact
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Institute of Microwave and Photonic Engineering

Inffeldgasse 12/I
8010 Graz
Tel.: +43 (0)316 873-3301
Fax: +43 (0)316 873-3302
E-Mail: ihfnoSpam@tugraz.at
Web: www.ihf.tugraz.at