A 79-GHz LTCC RF-Frontend for Short-Range Applications
Sprache des Vortragstitels:
Englisch
Original Tagungtitel:
International Microwave Symposium 2011 (IMS 2011)
Sprache des Tagungstitel:
Englisch
Original Kurzfassung:
An RF-frontend based on low temperature co-fired
ceramic (LTCC) technology is presented in this paper. The
frontend is designed for the 76 ? 81 GHz frequency band, using
high-permittivity material (?r = 7.4) and a 4-channel transceiver
chip based on SiGe technology. A bond matching structure was
designed with two-stage quarter-wavelength transformer, and a
laminated waveguide (LWG) was chosen as transmission line
in LTCC. A transition transfers energy from the differential
microstrip lines into the LWG. An LWG-fed patch array antenna
acts as transmit and receive antenna. A frequency-modulated
continuous-wave radar sensor was built with the frontend in
combination with a baseband board. The functionally of the RFfrontend
was verified by distance measurements. This compact,
low-cost LTCC frontend is suitable for short-range applications.