Sub-THz ultra wideband signal analysis in the D-band

March 16, 2020 //By Jean-Pierre Joosting
Sub-THz ultra wideband signal analysis in the D-band
Rohde & Schwarz is paving the way for research in the sub-THz frequency range by demonstrating multi gigabit data transmission in the D-Band at 140 GHz. The setup features the FSW high-end signal and spectrum analyzer equipped with an FSW-B8001 option, supporting an unparalleled 8.3 GHz internal analysis bandwidth.

Developments in mobile technology are moving constantly towards increasing bandwidths, enabling increasingly high data throughput. The Rohde & Schwarz setup represents some of the first research exploring data transmission at sub-THz frequencies featuring ultra-wide bandwidths.

In the setup, a wideband-baseband signal is upconverted to the selected 140 GHz frequency via a TC RSE converter box. The leading analog signal generator, the SMA100B, provides the local oscillator frequency to the upconverter. The transmission is carried out over-the-air, with the converter connected to a horn antenna. The transmitted signal is received via another horn antenna and downconverted. The FSW featuring the new, unique 8.3 GHz bandwidth option FSW-B8001 analyzes the signal, carrying out signal quality measurements such as error vector magnitude (EVM) to assess the performance of the transmission. Various common modulation formats are demonstrated. The new four-channel power supply NGP800 from Rohde & Schwarz plays a vital role powering various parts and components in this setup.

As wireless communications and sensing technologies are advancing, the need for higher bandwidths is becoming apparent. These developments push the frequency boundaries into the sub-THz and THz frequency range and, continuing the process started with 5G, make testing over-the-air (OTA) mandatory. At these frequencies, RF frontends become even more integrated, and their characterization in terms of signal quality (EVM) and out-of-band emission (ACLR, SEM, spurious) requires a flexible OTA test setup, covering a wide frequency range, from microwave and mmWave to sub-THz.


Vous êtes certain ?

Si vous désactivez les cookies, vous ne pouvez plus naviguer sur le site.

Vous allez être rediriger vers Google.