Phased array antenna systems are at the cusp of ubiquity. We now see Multiple-Input Multiple-Output (MIMO) antenna systems on WiFi routers. Soon phased array weather radar systems will help to pred… ...

Figure 1 shows the 4X4 patch antenna array. Figure 1: A 4X4 patch array (left), where each patch is fed by a pin coming up from the bottom ground plane. The right picture shows the mesh of one element ...

Figure 5 presents the geometry of a rectangular antenna array with 2×2 elements and a signal s (t) impinging from direction (ϕ, θ). Figure 5. Parallel wavefront impinging on a rectangular array with ...

The Allen Telescope Array is a unique facility, standing as the only radio telescope constructed with SETI as a principal activity. Its 42 antennas are currently being refurbished with more ...

A diversely polarized antenna array combines signal processing in the spatial and polarization domains for significant improvement in receiver robustness against interference. The C/N0 of ...

Directional Antenna Basics Nov 1, 2011 2:00 AM, by Jeremy Ruck, PE There is no way to cover all the important concepts of directional antennas in a single column. There have been many voluminous tomes ...

The Allen Telescope Array (ATA) is located at the Hat Creek Observatory in the Cascade Mountains of California, approximately 300 miles to the north of San Francisco and two dozen miles north of ...

Beam Direction First, let’s look at an intuitive example of steering a phased array beam. Figure 1 provides a simple illustration of a wavefront striking four antenna elements from two different ...

If you read old antenna books, you’ll probably see the idea of phased vertical antennas. These use certain lengths of coax to control the phase of a signal going to three verticals in a ...

In this article, I will cover various aspects of millimeter wave (mmW) beamforming and antenna technology with what I consider interesting and unique technical design examples. Beamforming Beamforming ...

Northwood Space has completed initial testing of the second generation of its phased array antenna technology, which can ...

This example illustrates the use of multiple antenna-array systems that were required for this type of system., including multiple (5 x 12 elements) series fed patch antennas (SFPAs) for the long ...