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Quad-channel beam switching WR3-band transmitter MMIC

: Müller, Daniel; Gülesin, Eren; Wagner, Sandrine; Tessmann, Axel; Leuther, Arnulf; Zwick, Thomas; Kallfass, Ingmar


Wikner, David A. (Ed.) ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Passive and Active Millimeter-Wave Imaging XX : Anaheim, California, United States, April 9, 2017
Bellingham, WA: SPIE, 2017 (Proceedings of SPIE 10189)
Paper 101890E, 6 S.
Conference "Passive and Active Millimeter-Wave Imaging" <20, 2017, Anaheim/Calif.>
Fraunhofer IAF ()
MMIC; transmitter; WR3; 240 GHz; Butler Matrix; Beam Switching; beamsteering

Millimeter wave radar systems offer several advantages such as the combination of high resolution and the penetration of adverse atmosphere like smoke, dust or rain. This paper presents a monolithic millimeter wave integrated circuit (MMIC) transmitter which offers four channel beam steering capabilities and can be used as a radar or communication system transmitter. At the local oscillator input, in order to simplify packaging, a frequency tripler is used to multiply the 76.6 - 83.3 GHz input signal to the intended 230 - 250 GHz output frequency range. A resistive mixer is used for the conversion of the intermediate frequency signal into the RF domain. The actual beam steering network is realized using an active single pole quadruple throw (SP4T) switch, which is connected to a integrated Butler matrix. The MMIC was fabricated in a 35 nm InGaAs mHEMT process and has a size of 4.0 mm × 1.5 mm.