Dengan membenamkan dua baris lubang tembusan logam kecil yang berkala dalam substrat dielektrik, struktur SIW dapat digunapakai dalam pelbagai aplikasi antenna berslot. Prosedur reka bentuk merangkumi reka bentuk struktur SIW, reka bentuk slot dan reka bentuk system suapan. Reka bentuk SIW, reka bentuk slot dan reka bentuk system suapan mengikuti pertimbangan reka bentuk Deslandes, kaedah Steven-son serta formula Farral dan kaedah Kumar masing-masing. Dua SIW antenna berslot direka pada band keselamatan awam dan telefon bimbit dengan frekuensi operasi sebanyak 1.8 GHz. Kedua-dua SIW antenna berslot difabrikkan dengan proses papan litar bercetak (PCB) yang biasa. Kedua-dua antenna akan diuji dalam makmal tertutup dengan menggunakan penganalisis spectrum tanpa sebarang penyerap anechoic. SIW antenna berslot dua mempunyai S11 sebanyak -18.7039 dB, lebar jalur sepanjang 80 MHz, HPBW sebanyak 55o dalam pesawat E dan HPBW sebanyak 75o dalam pesawat H. Di samping itu, SIW antenna berslot tiga mempunyai S11 sebanyak -15.7189 dB, lebar jalur sepanjang 110 MHz, HPBW sebanyak 55o dalam satah E dan HPBW sebanyak 55o dalam satah H. Keputusan simulasi dan ujian menyetujui cadangan SIW antenna berslot lebih baik daripada antenna bertampal bagi kemungkinan diimplementasi dalam keadaan kecemasan seperti kebakaran dan gempa bumi.
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By embedding two periodic rows of conducting metallic vias in dielectric substrate, SIW structure is implemented in slot array antenna applications. The design, simulated performances and measured performances of the antenna prototype are presented. The design procedure includes design of SIW structure, design of slots and design of microstrip feeding system. The design of SIW structure, design of slots and design of microstrip feeding system is following the Deslandes’s design considerations, Steven-son method and Farral’s formula, and method used by Kumar respectively. Two slotted SIW antennas are designed on public safety and cell-phone band with an operating frequency of 1.8 GHz. The two slotted SIW antennas are fabricate with printed circuit board (PCB) process. These two antennas are then tested in indoor laboratory using network analyzer without using any anechoic absorbers. For SIW 2 slots array antenna, it has S11 of -18.7039 dB, bandwidth of 80 MHz, HPBW of 55o in E-plane and HPBW of 75o in H-plane. For SIW 3 slots array antenna, it has return loss of -15.7197 dB, bandwidth of 110 MHz, HPBW of 55o in E-plane and HPBW of 55o in H-plane. Simulated and measured results show good agreements, which the proposed slotted SIW antennas are better than patch antenna for possibility during emergency conditions like earthquake and fire.
Design and measurement of slotted substrate integrated waveguide antenna / Tan Chun Kiat