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Ansys tech enables modelling of mm-wave for wireless comms

Posted: 07 Oct 2013 ?? ?Print Version ?Bookmark and Share

Keywords:antenna design? wireless transceiver? CMOS? simulation tool?

Ansys has entered a partnership with Imec that allows the nanoelectronics research centre to use what Ansys describes as its high-frequency electromagnetic and high-performance modelling tools to perform advanced research on antenna design and antenna/package-chip co-design in integrated mm-wave systems-in-a-package (SiP).

The downscaling of CMOS technology makes CMOS an attractive candidate as implementation technology for wireless transceiver ICs operating at mm-wave frequencies (30-300GHz). Moreover, since antenna dimensions become smaller, antenna arrays can be integrated with the radio chip in a compact mm-wave SiP. However, the mm-wave package design is complicated because the dense integration of mm-wave chip, antenna(s) and control lines in a small package can lead to significant electromagnetic interference and the smallest parasitics can severely degrade the system performance if not modelled and handled carefully.

LTCC antenna

Figure 1: Imec's LTCC antenna.

With the use of Ansys' technology, Imec developed compact 60GHz modules with active beamforming, resulting in a fully functional and IEEE 802.11ad compliant gigabit wireless link. This was made possible using Ansys' simulation tools to simultaneously model the integration of beamforming chip and antennae in a low-cost compact package with good radiation efficiency and excellent shielding.

According to Ansys, its simulation tools form an essential part in the development of all these integrated millimeter wave solutions. They enable the simultaneous modelling of chip-to-antenna interconnect and the radiation of the antennas at mm-wave frequencies. Using simulation early in the design process provides the necessary insights that allow Imec to optimise the system performance. Applying simulation at an early stage of the wireless system design process shortens the development cycle and reduces developing cost, Ansys added.

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