An embedded antenna is a metallic conductor embedded in a dielectric material with a dielectric constant greater than 1. This allows the antenna size to be decreased for use in devices like mobile phones without changing the resonant frequency. Embedding the antenna provides flexibility to vary the length without affecting frequency. It offers advantages like reduced size, customizable designs, protection from environmental changes, durability and reliability. Common applications include Bluetooth and GSM modules.

1. Embedded Antenna
BY SURAJ BONAGIRI

2. What is embed?

3. Definition
An embedded antenna is
nothing but a metallic
conductor embedded in a
dielectric material whose
dielectric constant is greater
than 1.

4. Role of dielectric material
 Consider an example of a half-wave dipole antenna.
 It resonates at a particular frequency.
 The main purpose of embedded antenna is to use it in mobile phones and
other small chips.
 In order to achieve this, antenna size must be decreased.
 When this is done, the resonant frequency changes due to change in it’s
length which is not desirable.
 That is why we use dielectric material as it provides us a flexibility of
varying the antenna length without compromising on the frequency.

5. How does it help?

6. Example

7. 4-patch antenna

8. Dielectric-conductor-dielectric sandwich

9. Advantages of Embedded Antenna
 Reduction is size.
 Flexible design ie., customizable.
 Protection against environment changes.
 Durable and Reliable
 These antennas have very good clarity.

10. Applications
Bluetooth module GSM Module