Abstract
This chapter presents gain and bandwidth enhancement techniques for THz planar microstrip antennas. Four models were designed, and the simulation results are presented in this chapter. The developed THz antenna models are as follows: (1) low SLLs microstrip array antenna for a resonance frequency of 118.2 GHz, and the achieved gain and impedance bandwidth were 17.54 dB and > 7.86 GHz. Further, the sub-model of this design was a THz low SLLs microstrip array antenna with bandstop FSSs for a resonance frequency of 118.2 GHz, and the achieved gain and impedance bandwidth is 21.16 dB and > 6.15 GHz. (2) slotted circular patch microstrip array antenna with silicon integrated waveguide (SIW) for a resonance frequency of 121.18 GHz, and the achieved gain and impedance bandwidth were 23.73 dB and 12.86 GHz. The sub-model of this design is a THz slotting circular patch microstrip array antenna with SIW and bandstop FSSs for a resonance frequency of 121.3 GHz, and the achieved gain and impedance bandwidth is 26.78 dB and 12.47 GHz, (3) parasitic patch microstrip array antenna for a resonance frequency of 114.07 GHz, and the achieved gain and impedance bandwidth were 20.4 dB and 18.01 GHz. The sub-model of this design was a THz parasitic patch microstrip array antenna with bandstop FSSs for a resonance frequency of 118.09 GHz, and the achieved gain and impedance bandwidth is 21.8 dB and 18.46 GHz, and (4) log-periodic 24 × 16 microstrip array antenna for a resonance frequency of 96.66 GHz, and the achieved gain and impedance bandwidth are 18.78 dB and 52.6 GHz. The first sub-model of this antenna was a THz log-periodic 24 × 32 microstrip array antenna for a resonance frequency of 137.34 GHz, and the achieved gain and impedance bandwidth are 19.74 dB and 54.3 GHz. In comparison, the second sub-model of this antenna is a THz log-periodic 24 × 32 microstrip array antenna with bandstop FSSs for a resonance frequency of 128.46 GHz, and the achieved gain and impedance bandwidth is 21.42 dB and 53.9 GHz. From error analysis, the proposed THz log-periodic microstrip array antenna gain and the bandwidth because of the predictable fabrication etching tolerance accuracy ±10 μm, the microstrip laminates frequency-pendent dielectric properties (εr) and the frequency-pendent losses (tanδ) may change by about 1.81 dB, 3.2 GHz, because of the antennas’ high frequency working beyond 100 GHz. The simulation results of the primary models were validated with another kind of antenna simulator, and a good agreement ate achieved.
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Nissanov, U., Singh, G. (2023). Gain and Bandwidth Enhancement Techniques for Terahertz Planar Antenna for 6G Communication. In: Antenna Technology for Terahertz Wireless Communication. Springer, Cham. https://doi.org/10.1007/978-3-031-35900-2_7
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DOI: https://doi.org/10.1007/978-3-031-35900-2_7
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