Each HBA tile is composed of 16 crossed bow-tie antennas in a 4 x 4 grid. This grid is exposed at first, but during the assembly it is covered with polystyrene lids and then a polyurethane cover. Under the entire tile is a wire mesh, which acts as a backplane (like the ground plane wire mesh the LBAs had).
The honey-comb structure which holds the individual antennas.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIWh-3kA-XfxGunaiMdElC9FKOIOHZREWm7hP7i2hy0uOGAZc2ipa0ewHVqtkOxFdU5Z9Fzd1fScZtJD5TrwpP2pr4pjdM7Y4O8Xbwk343hsTGWCrEBQkiv2022oiy9kcKyXZEEA19_YAd/s320/honeycomb.jpg)
A shot looking through a still-vertical tile at the 25m dish in the background.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiueiPlGHZVXASn_B6CXOTxgnRbdURuP6j45AnJXc4oI5LxJBjUw9ytIa-PMeQGA3LAaVhcRXliEaHA2akDrfJc3xiqJmZaT7Fq1M6kkC0dmNsvFByhW2EgMefrlULQu6c5YSsky-NrCPvi/s320/contains_antennas.jpg)
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