Slot Fed Patch Antenna Design
Design Ideas for Printed and Microstrip Antennas
Note:
ANTENNA DESIGN AND ITS EQUIVALENT CIRCUIT The geometry of the proposed microstrip line feed slot-loaded antenna is shown in Figure 1. The proposed antenna consists of microstrip line feeding, notches, and it is loaded with two parallel slots. The design speciļ¬cation of antenna is given in the Table 1. The basic geometry of the U-slot antenna is shown in Figure 1.This antenna was introduced in 1995 as a single layer, single patch linearly polarized wideband patch antenna. It was firmly established that the U-slot patch antenna can provide impedance bandwidths in excess of 30% for an air-substrate. Gain, radiation pattern, return loss, axial ratio and size of an antenna. The slots on the patch or on the ground plane will help to design a antenna with improved bandwidth and effeciency. Key words: microstrip patch antenna, slots, bandwidth, gain, efficiency. 1.INTRODUCTION Microstrip slot antennas invented in 1938 by Alan Blumlein. The patch antenna, shown in Figure 11.14 with microstrip feeding, is one of the most widely used planar antennas. Feeding is extremely important with the patch antenna, and it contributes to bandwidth, crosspolarization levels, and ripple. Microstrip-fed patches have very narrow bandwidths, almost invariably less than 5%. A design and simulation of circular shaped microstrip antennas using slot, slit geometries for wireless communication is proposed. Using this design more than 50% impedance bandwidth is obtained. The antennas are fed by coaxial probe method. This paper presents the simulated results of antennas return loss parameters, gain, directivity and efficiency.
Many of the antennas presented below relate to areas in which a wide variety of patents have been granted.
It should not be assumed that because a technique or physical structure is described here it is free of patents or other commercial Intellectual Property.
They are presented here only for information and educational purposes.
-Ground Plane Effect on Printed Antennas
-Planar Antennas Selection Chart
Slot Fed Patch Antenna Designs
-Basic Microstrip Antenna Shapes
Patch Antenna Design Formula
-Basic Printed Slot Antennas with Feed Structures
Patch Antenna Design
-Comparison of Microstrip Patch and Slot Antennas