Slot Fed Patch Antenna Design
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Abstract— There are many types of microstrip patch antenna that can be used for applications of communication systems. This paper presents the design of a series-fed microstrip patch antenna array to operate at the frequency of 3.4 GHz. Two types of feeding techniques are used here. One is transformer. Rectangular U-slot Patch Antenna for 5.6 GHz; Ring-Resonator Microstrip Antenna; Shorted C-Shaped Microstrip Antenna Stacked U-slot Antenna; Wideband Double U-slot Patch Antenna for 1 GHz to 2 GHz; Wideband RSMA with U-slot 0.8 GHz for 1.3 GHz; Dual-Band Circularly Polarized S-shaped Slotted Antenna; USB-Dongle PCB Antenna for 2.4GHz. The substrate (h) should be known when The design patch antenna is requested. The design procedures are as follows 5: First the width (W) is determined from 1 2 1 2 2 2 1 0 0 + = + = µε ε ε r r r r o f c f W (1) where c0 is the free-space velocity of light Then one can determine the effective dielectric constant of the microstrip antenna using the following equation.
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:
Patch Antenna Design
- Ws = 743.3 μm
- Ls = 18.58 mm
- Wf = 2.892 mm
- Wm = 625.7 μm
- S = 8.053 mm
Patch Antenna Design Formula
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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Slot Antenna Design Formulas
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