The Millimeter Array

The Atacama Large Millimeter Array (ALMA)

The Atacama Large Millimeter Array, or ALMA, is an international telescope project which will be built over the coming decade in Northern Chile. With over 7000 m of collecting area comprised of 64 12m antennas arrayed over baselines up to 14 km in extent, ALMA will provide images of unprecedented clarity and detail. One revolutionary feature of ALMA will be its ability to combine interferometri...

Millimeter-VLBI with a Large Millimeter-Array: Future Possibilities

We discuss possibilities and improvements which could be obtained, if a phased array with a large number (N= 50 − 100) of sub-millimeter antennas – like the planned large southern array (LSA) – is used for radio-interferometry with very long baselines (VLBI) at millimeter wavelengths. We find that the addition of such an instrument will push the detection limit and the imaging capabilities of a...

Injection Molded Millimeter-Wave Horn Array Antenna

This paper shows injection molded millimeter-wave horn array antenna for the 1-dimensional APAA(Active Phase Array Antenna). The antenna is composed of horn antennas, grooved circular waveguide polarizers, E-plane T-junctions, and E-plane bends employing dielectric waveguides. This structure makes it possible to manufacture a feed circuit and radiating elements as an integrated unit by using in...

RDRA Array System for Millimeter-Wave Applications

Lobby 1 Chair: Tudor Palade (Technical University of Cluj-Napoca, Romania) , Stephan Stanko (FGAN-FHR, Germany) 2.1 SIWSeries Fed RDRA Array System for Millimeter-Wave Applications Wael Abdel Wahab (University of Waterloo, Canada); Safieddin Safavi-Naeini (University of Waterloo, Canada); Dan. Busuioc (University of Waterloo, Canada) A simple, low cost novel series feeding scheme to rectangular...

The Inauguration of the Atacama Large Millimeter/submillimeter Array