1. I need to design and simulate serial feed microstrip array antenna at frequency of 120 GHz.
2. How can I improve the bandwidth (BW) of the serial feed microstrip array to 10% at least?
3. Can you attach an example?
Hi,
You can follow this paper.
WIDE-BEAM HIGH-EFFICIENCY
MICROSTRIP PATCH-BASED ANTENNA
FOR BROADBAND WIRELESS
APPLICATIONS By Janusz Mlynarczyk.
The use of series feed network results in compact antenna array design with reduced feed line lengths and feed radiation. However, series-fed arrays have low bandwidth. Impedance bandwidth is affected by substrate thickness and its dielectric constant. The cancellation of standing waves in series-fed array results in improvement of bandwidth and radiation characteristics of antenna. Some designers have applied U-shape gap-coupled series fed network to improve bandwidth. U-shape feed line reduces inter-element spacing and it improve bandwidth. In broadside linear array, the series feed network achievable instantaneous bandwidth depends on the array length, given as ∆f/f=0.886λ0/L. Wide impedance match is harder to attain in uniform broadside linear arrays (ψ=0) since power must equally be divided among the elements for uniform current distribution, while keeping the relative progressive phase (ψ) between the elements to zero.
I need to design simulate and fabricate a serial feed microstrip array antenna at freq. of 120GHz with gain of at least 24.5 dB and BW of 6% at least.
Does Parasitic patch can improve the low BW of serial microstrip array antenna to 6%?
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