EASY-A : Enablers for Ambient Services & Systems Part A – 60 GHz Broadband Links

The goal of Ulm University is to design and realize a cost-efficient receiver that allows to enable short-range ultra-high rate (10 Gbit/s) wireless communications for commercial applications benefitting from the license free allocated freqeuncy band at 60 GHz. Furthermore, Ulm University acts as the leader of a workgroup within the project: The preparation of a demonstrator of the UHR data transmission scenario.

In order to achieve the cost efficiency, a analog synchronous receiver is targeted, as shown in Fig. 1, eleminating the need for costly ADCs, which typically consume several Watts of DC power. The synchronous detection is based on a simple carrier recovery principle using frequency multiplication. A second aspect of the investigation is utilizing the cost-efficient SiGe2RF HBT technology ( fT / fmax ~ 80 GHz ) from Telefunken Semiconductors for millimiter-wave applications. In Fig. 2 a fully integrated downconversion MMIC is displayed which demonstrates the applicability of this technology for the application in question. The signal generation is realized by designing a VCO at half the operation frequency with sufficient output power, and using an efficient frequency doubler. www.easy-a.de Contact: Ahmet Cagri Ulusoy, phone: 0731 - 503 1589, room: 45.3.111, e-mail: ahmet.ulusoy@uni-ulm.de Gang Liu, phone: 0731 - 503 1590, room: 47.2.109, e-mail: gang.liu@uni-ulm.de



Fig. 1: Proposed Low-Cost Receiver Architecture Utilizing Analog Synchronous Detection
Fig. 2: 60 GHz Downconversion MMIC realized in SiGe2RF Technology