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Humboldt-Universität zu Berlin - Faculty of Mathematics and Natural Sciences - Optical Systems

Humboldt-Universität zu Berlin | Faculty of Mathematics and Natural Sciences | Department of Physics | Optical Systems | Publications | Tunable 500 GHz transmitter-array in SiGe technology for gas spectroscopy

K. Schmalz, J. Borngräber, Wojciech Debski, Philipp F Neumaier, and Heinz-Wilhelm Hübers (2015)

Tunable 500 GHz transmitter-array in SiGe technology for gas spectroscopy

Electronics Letters, 51:257-259.

A 500 GHz system for gas spectroscopy is presented, which includes an integrated SiGe 4x1 transmitter (TX)-array, a Golay cell, and a 1.9 m long gas absorption cell. The local oscillator (LO) of the TX-array is controlled by an external phase-locked loop (PLL), whose reference frequency is swept. The four TX-branches involve frequency quadruplers (x4). The TX-branches are fed by a 120 GHz power division network, which is connected to the LO. The estimated radiated output power of the TX array is 7 dBm at 500 GHz. The absorption spectrum of methanol is shown for 494 - 500 GHz.

Terahertz, SiGe, Transmiter, Golay, Gas, Gas-Sensor, Spectroscopy, 500 GHz, Array