Microwave Journal
www.microwavejournal.com/articles/35799-ghz-traveling-wave-amplifier-designed-for-32-gbps-nrz-and-pam4

30 GHz Traveling Wave Amplifier Designed for 32 Gbps NRZ and PAM4

April 14, 2021

HYPERLABS has developed a thermally compensated, ultra-linear amplifier/data driver for high speed digital networks and telecom systems. Model HL5867 is a single stage, GaAs MMIC traveling wave amplifier (TWA) providing 13 dB gain from 75 kHz to 30 GHz. For use as a data driver, the HL5867 was designed for 32 Gbps NRZ and PAM4 data signaling. It can also be used as a general-purpose gain stage in any application needing high pulse fidelity.

Using HYPERLABS’ knowledge of broadband and time domain fidelity, the HL5867 was designed to have a flat step response, which produces a highly accurate representation of the input signal. Flat pulse response is crucial to keeping an eye diagram undisturbed with minimum added jitter. HYPERLABS has integrated a proprietary thermal compensation algorithm in the amplifier to automatically adjust the bias points to keep the crossing point and amplitude constant from 0°C to 60°C. The TWA’s bias circuitry uses the technology in HYPERLABS’ HL9447 67 GHz bias tees and HL9437 DC blocks, and the input and output RF ports are AC coupled. The amplifier is biased with dual supplies of +7 and -8 V and typically dissipates 1.5 W. The size of the standard housing for the HL5867 data driver is 1.45 x 1.10 x 0.40 in.

Founded in 1992 and privately owned, HYPERLABS offers an array of ultra-broadband components, including broadband baluns, bias tees, DC blocks, power dividers and matched pick-off tees with frequency coverage extending above 67 GHz. HYPERLABS’ instrumentation line includes the first USB-powered and controlled time domain reflectometry instruments, controlled impedance analyzers, signal path analyzers and samplers, including harmonic mixers.

HYPERLABS INC.
Beaverton, Ore.
www.hyperlabs.com