VTU - Antenna Propogation

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