Compact Microstrip Patch Antenna Utilizing Low Cost Solution Cast Nanomagnetic Thin Film

Miniaturisasi Antena Mikrostrip Pencatu Ganda Menggunakan Metode Peripheral Slit

“…Antena mikrostrip telah banyak diteliti dan dirancang untuk sistem komunikasi nirkabel [1][2][3]. Salah satu keunggulan antena mikrostrip adalah desainnya yang ringkas dan biaya rendah [4][5][6]. Desain antena mikrostrip tergantung pada frekuensi kerja yang digunakan, frekuensi kerja rendah akan menghasilkan antena yang memiliki dimensi lebih besar dan sebaliknya.…”

Compact patch antenna on thick (>800 μm) NiFe 2 O 4 magnetic film

“…In our recent work, magnetic films made of various composites that were fabricated using effective and low-cost chemical methods have been characterised to exhibit high magnetisation saturation and controllable film thickness [16]. These magnetic films have been demonstrated in RF circuits and antennas to show good performance [17,18]. In this paper, we report for the first time, the 875-900-μm-thick NiFe 2 O 4 nanoparticle films, which to the best of the authors' knowledge, are the thickest magnetic films fabricated for antennas using a simple chemical fabrication method.…”

“…As we can see, the fabricated magnetic film allows the proposed antennas to operate at a much higher frequency range compared to the traditional magnetodielectric composite substrate used in [8]. Given the patch antenna setting, because of the 875 μm film thickness of S2 which is much thicker than the 8-μm-thick film used in [15] or the 30-μm-thick film used in [18], S1 thereby has a much larger resonance shift, enhanced BW, efficiency and gain. Again, we expect more of such performance enhancement and size reduction when good film quality is achieved.…”

“…In authors' previous work, low-cost and effective chemical methods of fabricating thick magnetic films using various material composite nanoparticles were proposed, which were utilised to develop several Radio frequency (RF) circuits with improved performance [16][17][18]. Recently, in [18], a 30-μm MnFe 2 O 4 nanoparticle film loaded rectangular patch antenna achieves a frequency shift of 0.5 GHz, a gain enhancement of 0.5 dB and an improved bandwidth by 0.14 GHz, which is promising in antenna miniaturisation.…”

Antenas y componentes de microondas para satélites de dimensiones reducidas utilizando tecnologías vacías integradas en substrato

“…A fin de mejorar el ancho de banda de adaptación, una de las formas consiste en aumentar la altura del substrato; no obstante, este enfoque puede inducir la excitación de modos de orden superior que generan ondas superficiales en el dieléctrico, resultando en una disminución de la eficiencia [139]. Una posible estrategia para mejorar la eficiencia de la antena, así como ancho de banda, implica el empleo de cavidades rellenas de aire o substratos con permitividades dieléctricas cercanas a la del aire (ϵ r = 1) como se ha constatado en numerosas referencias con diferentes enfoques [140][141][142][143][144][145][146][147], aunque se incremente ligeramente las dimensiones de la antena. No obstante, gran parte de esas soluciones no implementan realmente una solución de un parche con el dieléctrico siendo aire, sino que son soluciones basadas en cavidades vacías, que requieren de una capa añadida.…”