Presented by : Guided by :AYUSHMAAN BHAT(09\083) MR. PANKAJ SHUKLA

PARIXIT GAUTAM (09\108)

PRADEEP CHAUHAN (09\144) Project Co-Ordinator :

RAJ AGRAWAL (09\116) MR. MITHILESH KUMAR

RAJESH (09\117)

SAHIL SATISH (09\126)

Frequency-Reconfigurable Micro-strip Antenna WithBiasing Network Driven by a PIC Microcontroller

Electronics Engineering Department, UCE, Rajasthan Technical University

Kota

INDEX

• INTRODUCTION

• RECONFIGURABLE ANTENNA IMPLEMENTATION

• DIMENSIONS

• RESULTS AND SIMULATION

INTRODUCTION

Antenna can be defined as conductor or a group of

conductors used for radiating electromagnetic energy into

space or collecting it from space.

Importance of Switchable ability:-

To obtain the switchable ability of the antenna, the

concept of a reconfigurable antenna was proposed. The

reconfigurable characteristics of antennas are very

valuable for many modern wireless communication and

radar system applications.

RECONFIGURABLE MICRO-STRIP PATCH ANTENNA

A low-profile micro-strip patch antenna has been

designed for tuning on a discrete set of instant frequencies.

The frequency re-configurability is obtained by resorting to

Electrically actuated switches operated via a software-controlled

biasing network. A low-cost PIC microcontroller is employed to

control the antenna operative condition among the available

states. Measurements on a fabricated prototype show a good

matching with simulations and prove the reliability of the

proposed configuration

RECONFIGURABLE ANTENNA IMPLEMENTATION

Group G1

Group G2

Diodes parameters:1.When ON R=1 Ω ,C=.3 pF2.WHEN OFF R=10^4Ω, C=.3 pF

Substrate parameters :Height h = 1.60 mm.Material : FR4((ε r = 4.4)

DIMENSIONS (in mm)12

7127

84

2727

15

21

RESULTS AND SIMULATIONS

Group G1

Group G2

CASE GROUP G1 GROUP G2

1. OFF OFF

2. ON OFF

3. OFF ON

4. ON ON

CASE 1. BOTH GROUPS ARE OFF

CASE 2. GROUP G1 ON AND G2 OFF

CASE 3. GROUP G1 OFF G2 ON

CASE 4. BOTH GROUPS ARE ON

THANKS…..