Approximate Model For Microstrip Fed Slot Antennas

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Two wide rectangle-shaped microstrip-fed 2.6-GHz slot antennas using defected ground structures (DGSs) with a low design complexity are proposed to achieve wideband harmonic suppression. To accomplish this, two rectangular DGSs (RDGSs) in the first antenna and two circular DGSs (CDGSs) in the second one with various dimensions are etched into the ground plane, which could have a wideband-stop. EQUIVALENT-CIRCUIT MODEL ANALYSIS Figure 1(a) shows the geometrical configuration of the microstrip fed open-end slot antenna, and an open-end slot etched in the ground plane whose total length isLShas an interdigital structure at the open end.

Approximate Model For Microstrip Fed Slot Antennas For Sale

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A microstrip-fed slot antenna was designed using Antenna Magus for the following specifications:

  • 5 GHz centre frequency
  • 50 Ω input impedance
  • FR4 substrate, ε = 4.35, height = 1.5mm

Dimensions of the slot and feed-line are:

Approximate Model For Microstrip Fed Slot Antennas Antenna

  • Ws = 743.3 μm
  • Ls = 18.58 mm
  • Wf = 2.892 mm
  • Wm = 625.7 μm
  • S = 8.053 mm

FEKO’s implementation of the planar Greens function features the ability to model the slot in the ground plane as magnetic triangles, which means that only the slot is meshed and not the ground plane itself, saving significantly on simulation resources.

Reflection coefficient of microstrip-fed slot antenna

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Double-slot-fed microstrip antennas for circular polarization operation

Abstract

Approximate

Using the cavity model theory, simple design formulas are developed for double-slot-fed circularly polarized microstrip antennas. Equivalent magnetic current sources are assumed at the slot positions and then the electric field distribution under the patch is obtained in terms of cavity modes. By applying the circular polarization conditions to the far-field components of the electric field, the loci of the positions of the slots for the circular polarization operations are found. Experimental results are successfully demonstrated based on the theoretical designs.


Microstrip
Publication:
Pub Date:
October 1989
Bibcode:
1989MiOTL...2..343A

Approximate Model For Microstrip Fed Slot Antennas Long Range

Keywords:

Approximate Model For Microstrip Fed Slot Antennas Instructions

  • Antenna Design;
  • Circular Polarization;
  • Integrated Circuits;
  • Microstrip Antennas;
  • Slot Antennas;
  • Antenna Radiation Patterns;
  • Cavity Resonators;
  • Electric Fields;
  • Far Fields;
  • Communications and Radar