Printed Antenna Arrays with High Side Lobe Suppression

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 when aperture angle (α)
 is <svg height="13.1375" id="M5" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 29.637501 13.1375" width="29.637501" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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Active and Passive Electronic Components

Printed Antenna Arrays with High Side Lobe Suppression

Figure 2