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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Porranzl, Matthias Wagner, Christoph Jaeger, Herbert Stelzer, Andreas |
| Copyright Year | 2015 |
| Description | Author affiliation: Danube Integrated Circuit Engineering (DICE), A-4040 Linz, Austria (Wagner, Christoph; Jaeger, Herbert) || Institute for Communications Engineering and RF-Systems, Johannes Kepler University of Linz, A-4040 Linz, Austria (Porranzl, Matthias; Stelzer, Andreas) |
| Abstract | A modified structure of an active quasi-circulator (QC) is proposed for receive signal (RX) and transmit signal (TX) separation in 77-GHz monostatic FMCW radars. The circuit includes an impedance tuner, operating as leakage canceler, which performs compensation for process variations, parasitics of transistors as well as antenna mismatch. Additionally, the TX path is designed to be passive, to avoid any compression in the transmit signal. The QC is fabricated in a 200-GHz fT Silicon-Germanium (SiGe) HBT technology. On-wafer S-Parameter measurements show an isolation of 43 dB at 78 GHz. The insertion loss for the TX-path is around 7dB, whereas the gain in the RX-path is around 3 dB. Due to the tuner, the center frequency of the isolation can be varied from 67 GHz to 85 GHz. |
| Starting Page | 1 |
| Ending Page | 3 |
| File Size | 187197 |
| Page Count | 3 |
| File Format | |
| ISBN | 9781479987658 |
| e-ISBN | 9781479987672 |
| DOI | 10.1109/APMC.2015.7411581 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-12-06 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Tuners Impedance Radar Antennas Silicon germanium Transistors Automotive engineering TX/RX isolation active quasi-circulator monostatic FMCW 77-GHz radar impedance tuner |
| Content Type | Text |
| Resource Type | Article |
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