APMC2017 – Asia Pacific Microwave Conference

Wendler Wolfgang
Rohde & Schwarz GmbH & Co. KG, Malaysia

IND 1: Special Session Microwave Industry 3
Room, Time & Date: ROOM 02 | 09:40 – 10:00 | Wednesday, 15 November 2017

 

Wide Band Signal Analysis and Amplifier Measurements for 5G and Automotive RADAR

Abstract: More and more applications require wide bandwidths in the GHz range.The world’s first 5G network deployments will be in the 28 GHz band, with US and South Korean based operators, giving a jump in frequency, signal bandwidth (800 MHz) and complexity. Solutions for wide band signal analysis in the micro wave range are needed to measure modulation quality or distortion of power amplifiers (PA). Most PAs operate in their non-linear range for efficiency reasons. In order to maintain signal quality, digital predistortion (DPD) is employed to linearize the output signal. Signal capture wider than the channel bandwidth is needed to create models to implement real-time DPD for PAs. Wideband measurement solutions for these applications are presented based on the signal analyzer R&S FSW which with an internal analysis bandwidth of 2 GHz. But not just future wireless communication standards will cover a wide bandwidth. The global trend for automotive radars are E-band systems operating at center frequencies between 77 and 79 GHz depending on the geographical region, with wideband modulation up to 4 GHz using FM chirp waveforms to reach good target resolution. The R&S FSW85 in combination with an oscilloscope RTO 2064 covers the needed frequency range directly without the use of external converters and offers a bandwidth of up to 5 GHz. More than enough to analyze automotive RADAR signals. A transient analysis option characterizes FM CW radar signals. It displays the frequency response and calculates automatically the deviation from the ideal linear Phase.