Printed antennas - Techniques and application domains.

In the , we have set out the basics and principles for the design of simple printed antennas.

However, an element of this type generally has limitations such as low bandwidth, average directivity and gain, a size of the order of half a wavelength, little flexibility in terms of polarization reconfiguration, frequency or de-pointing of the radiated beam, and so on.

In this dossier, we first describe the techniques that can be used to improve one or more of these radioelectric characteristics. Miniaturization and networking are also discussed. The main applications for these radiating elements are then presented: satellite communications, aeronautical antennas, mobile telephony, contactless identification, biomedical antennas, communicating objects, etc.

For more details on antenna theory, the reader can also consult the following articles in the treatise Electronics:

• — "Antennas. Basics and principles" ;

• — "Antennas. Different types";

• — "Antennas. Techniques" ;

• — "Antennas. Related items";

• — "Active antennas. Principles of design";

• — "Active antennas. Dimensioning";

• — "Slotted antennas".