Dian Widiastuti

Dian Widiastuti
Universitas Mercu Buana | UMB · Fakultas Teknik

Doctor of Engineering

About

38
Publications
14,178
Reads
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113
Citations
Citations since 2017
28 Research Items
93 Citations
20172018201920202021202220230510152025
20172018201920202021202220230510152025
20172018201920202021202220230510152025
20172018201920202021202220230510152025
Additional affiliations
November 2012 - present
Universitas Mercu Buana
Position
  • Secretary of Master of Electrical Engineering

Publications

Publications (38)
Article
Full-text available
Sekarang ini perkembangan telekomunikasi pada jaringan nirkabel berkembang dengan sangat cepat. Perkembangan telekomunikasi yang cepat tersebut disebabkan oleh kebutuhan manusia terhadap informasi secara cepat dan dapat diakses di mana saja. Salah satu perangkat pada sistem telekomunikasi jaringan nirkabel adalah antena. Kebutuhan antena yang dapat...
Article
Full-text available
In this study, the design of a 2X2 MIMO microstrip antenna was proposed for LTE and 5G Sub-6GHz applications. The antenna is designed to have a wide bandwidth operating in the frequency range of 2300 MHz to 3600 MHz. The antenna material uses FR4 substrate which has a dielectric constant of 4.6 and a thickness of 1.6 mm. To achieve a wide bandwidth...
Article
This study proposes a microstrip antenna with L slot that is optimized using parasitic patches. The addition of parasitic elements aims at enhancing the bandwidth of the proposed antenna. Parasitic elements were added using two types of FR-4 substrate, which were stacked. The radiating element was placed in the bottom layer, while the parasitic ele...
Article
A microstrip antenna suffers from a narrow bandwidth because of the thickness of the substrate. This paper presents a wideband microstrip antenna by using Defected Ground Structure (DGS) on a bow-tie microstrip patch antenna. The cross-dumbbell shaped slot is used as DGS on the ground layer. The cross-dumbbell DGS slot is put on the backside of the...
Article
Full-text available
The substrate integrated waveguide (SIW) structure is the candidate for many application in microwave, terahertz and millimeter wave application. It because of SIW structure can integrate with any component in one substrate than others structure. A kind components using SIW structure is a filter component, especialy bandpass filter. This research r...
Article
Full-text available
This research proposed microstrip antenna design using the Defected Ground Structure (DGS) and horizontal patch gap (HPG) for bandwidth and enhancement purposes. This design is to reduce the weakness of a microstrip antenna, which has small gain and narrow bandwidth. The design was simulated in CST Microwave Studio with a working frequency of 2.4 G...
Article
Full-text available
This paper proposes bandwidth enhancement of a cavity-backed slot antenna using a triangular slot on a half-mode substrate integrated waveguide structure antenna. The bandwidth enhancement was achieved by combining the fixed TE101 and the downward shifting TE102 modes, resulting in hybrid modes. The design evolution of the slot antenna from a half...
Article
Pada penelitian ini dilakukan perancangan antena mikrostrip dengan menggunakan metode split ring resonator (SRR) untuk aplikasi pada frekuensi L-Band. Antena ini mempunyai dimensi substrat 90 mm x 50 mm dengan panjang patch 60 mm dan lebar patch 44 mm. Desain antena menggunakan material FR4-Epoxy dengan spesifikasi konstanta dielektrik 4,6 dengan k...
Article
Full-text available
Substrate integrated waveguide (SIW) is a technique to implement waveguide into microstrip material that can be applied to filter, antenna, mixer, coupler, and so on. Implementation of SIW to filter can overcome the problem of size reduction and high insertion loss commonly used in a conventional filter. While the complementary split ring resonator...
Article
Full-text available
In this paper, circular-shaped microstrip antenna was simulated, fabricated, and measured accordingly. As the novelty, to enhance bandwidth and reduce antenna size, beleved half-cut microstrip structure is proposed. Further, this proposed antenna structure will be applied to multiple input multiple output (MIMO) antenna 22. Therefore, this researc...
Article
Full-text available
span lang="EN-US">In this paper, circular-shaped microstrip antenna was simulated, fabricated, and measured accordingly. As the novelty, to enhance bandwidth and reduce antenna size, beleved half-cut microstrip structure is proposed. Further, this proposed antenna structure will be applied to multiple input multiple output (MIMO) antenna 2 ´ 2. The...
Article
Full-text available
Good performance and compact size are the paramaters which are vital when desiging a filter. One of the creteria of good performance is selectivity. This research, conducted by Hilbert Curve Ring and Siepinski Carpet, is used as defected ground structure to overcome filter selectivity. By using three cascadeds Hilbert Curve Ring defected ground str...
Article
Full-text available
In this paper, we present a bandpass filter that passed frequency of 1.7 GHz – 1.8 GHz. It is applied for an uplink frequency in 4G 1800MHz. This filter is created by using substrate PCB TMM-10i and has a compact size of 42 mm x 42 mm. The compact size is also important besides selectivity. The selectivity is achieved by implementing cascade square...
Conference Paper
Full-text available
The demand on higher data rate in modern communication systems leads to the use of multiband applications. A multiband double layered microstrip antenna is designed for this purpose. The patches are shaped through variation of the widths and lengths of tri-slots to achieve reflection minimal at 3.1 GHz, 5.8 GHz, 7.4 GHz and 9.8 GHz in S11 (-25 dB)...
Article
Full-text available
Orthogonal Frequency Division Multiplexing (OFDM) merupakan suatu teknik transmisi yang menggunakan beberapa buah frekuensi pembawa (multicarrier) dalam satu saluran dimana setiap frekuensi pembawa tersebut saling orthogonal (tegak lurus). OFDM banyak dipakai untuk sistem komunikasi wireless mengingat kemampuan dari OFDM mengatasi multipath fading...
Article
Full-text available
Abstrak Filter merupakan bagian penting pada proses penerimaan dan pengiriman informasi baik itu berupa data, suara ataupun gambar. Filter berfungsi untuk menyeleksi frekuensi mana saja yang ingin dilewatkan atau dibuang sehingga penamaan suatu filter, berdasarkan atas fungsi dari filter itu sendiri, salah satunya adalah dualband bandpass filter ya...
Conference Paper
Full-text available
One kinds of waveguide filter is interdigital filter, which uses a cylindrical rod shaped resonators alternately. In this research resulted in an interdigital waveguide filter by using 6 pieces resonator cylinders for satellite meteorology applications at frequencies 1.675 to 1.710 GHz. The simulation with HFSS shows an insertion loss value of 0 dB...
Article
Full-text available
Dalam dunia telekomunikasi, antena parabola ini dipakai oleh perangkat yang dinamai perangkat transmisi radio microwave (gelombang mikro) point to point. Microwave link sendiri merupakan sistem komunikasi yang menggunakan gelombang radio pada rentang frekuensi gelombang mikro untuk mengirimkan video, audio, atau data antara dua lokasi yang terpisah...
Article
Pada aplikasi jaringan inbuilding coverage gangguan interferensi menjadi faktor utama penurunan kinerja jaringan. Pada jurnal ini telah dilakukan analisa pengaruh performansi RTWP terhadap kualitas performansi jaringan atau Key Performance Indicator (KPI). Analisa dilakukan dengan mengamati performansi nilai RTWP menggunakan Huawei Local Maintenanc...
Article
The research was conducted on various types of antenna arrays namely Uniform Array, Binomial Array, Dolph-Chebyshev Array, and Taylor Array. This research is done in the real propagation environment in order to define precisely the number of antenna elements, the distance between the elements, the angle of the antenna arrays, the side lobe level an...
Article
Dewasa ini perkembangan teknologi di dunia robot edukasi telah berkembang pesat. Robot-robot edukasi ini sering digunakan dalam riset penelitian karena kemudahan-kemudahan yang diberikannya dari segi perangkat keras. Salah satu contoh robot edukasi adalah robot LEGO Mindstorms NXT 2.0. Dengan semakin pesatnya perkembangan teknologi robot pada saat...
Article
Lift biasa diaplikasikan di gedung-gedung bertingkat merupakan pengembangan dari katrol yang menggunakan energi listrik untuk menggerakkannya dari satu lantai ke lantai yang lain. Penggunaan lift masih menggunakan tombol sebagai penanda lantai, di mana setiap orang yang masuk ke dalam lift dapat menekan tombol lantai yang ingin mereka tuju. Hal ini...
Conference Paper
Full-text available
Stepped impedance resonators are a structure consisting of several transmission lines with different admittances. They are used for control the spurious response and insertion loss of filters by changing the impedance/admittance ratio of the stepped impedances. The multiple mode resonator, which is implemented in form of stepped impedance resonator...
Conference Paper
Full-text available
A bandpass filter based on square open loop resonator is designed at 2.45 GHz. To enhance the filter selectivity around the pass band two transmission zeros are introduced and also additional tranmission zeros inserted apart from the pass and to guarantee the rejection there. This six pole filter with four transmission zeros is implemented in micro...
Conference Paper
Full-text available
Bandpass filters play a significant role in many wireless communication systems. The filters pass desired signals and reject unwanted one. In this paper, we design a four-pole bandpass filter using a rigorous computer simulation. The resonators used are square open-loop resonators. To get a sharper selectivity around the pass band, transmission zer...

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