The Submillimeter Array (SMA) is a pioneering radio interferometer
dedicated to the observation of the submillimeter sky at angular
resolutions of 1 to 30 arc seconds. Since its full scale operation 10
years ago, the SMA has made important contributions to astrophysics
from planetary science, star formation to submillimeter galaxies. The
SMA is also the de facto pre-cursor of the more powerful ALMA, for
which it has paved the way and has laid down a strong technological
foundation. As ALMA moves into full scale science operation over the
next few years, the SMA is re-positioning itself by making way for new
capabilities. The key upgrade under planning is a new wideband
receiving system, which will have instantaneous sky coverage of up to
72 GHz. To make this possible, new ultra-wideband SIS receivers and
backend electronics running at blazing speeds have to be developed.
Running in parallel with the SMA wideband upgrade is the new Greenland
telescope initiative. The Smithsonian Observatory, in collaboration
with ASIAA, Taiwan, is planning to move a 12-meter telescope (an ALMA
prototype dish) to Greenland. While the primary mission of the project
is to provide a northern anchor point for the submillimeter VLBI
campaign to observe the massive black hole in M87, plans are being
made to equip the Greenland telescope with diverse instrumentation
ranging from THz multi-beam receivers to multi-color wide-field
bolometric camera. We expect that all these technological
developments will further push the frontiers of submillimeter
astronomy.