Ground plane with a bunch of small rectangular holes in it
https://files.ioc.exchange/media_attachments/files/113/707/875/342/503/206/original/19f7648f2fc63e16.png
Layer 2 ground plane, including various cutouts under connector pads and BGA lands for impedance matching
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.