Pada kanal komunikasi, sinyal informasi yang dikirimkan akan selalu mengalami gangguan karena adanya derau menyebabkan terjadinya kesalahan pendeteksian sehingga terjadi perubahan bit atau simbol pada sisi penerima. Hal ini konstelasi di penerima tidak sama dengan pengirim. penelitian diteliti pengaruh AWGN dikirim. Untuk itu dibuat suatu pemodelan, simulasi dan analisis untuk mengamati terhadap unjuk kerja sistem modulasi 16 QAM. Unjuk tersebut dapat diketahui dari nilai Bit Error Rate...

Abstract Research about dipole planar printed antenna with bowtie shape is presented for ISM application in WIFI technology. Study of the effect flare angle as parameters on return loss simulated using high-frequency electromagnetic field simulation different Finite Element Method (FEM). The results show double better than traditional and operate triple band frequency.

This research proposes two virtual keyboard designs and control methods of keyboards. The Keyboard I layout is a $4\times 10$ matrix with QWERTY array keypad the II $7\times 6$ alphabet keypad. Both use thumb index finger only to operate These fingers can execute five commands: right searching, down selecting character, clearing monitor, activating buzzer. directions are detected by Leap Motion sensor. Algorithm has two-finger gestures 4 variables time. first gesture pointing three functions...

Jaringan nirkabel berdaya rendah atau low power wireless area network (LPWAN) umunya digunakan dalam teknologi internet of thing (IoT) untuk komunikasi mesin ke mesin. Kelebihan dari ini adalah penggunaan daya yang dengan jangkauan lebih jauh dibandingkan lain. Dalam prosesnya data memiliki karakteristik tertentu sesuai medan dilaluinya. Pada penelitian dilakukan pengujian jaringan menggunakan LoRa beroperasi pada frekuensi 920-923 MHz. Berdasarkan hasil sistem di daerah hijau, didapatkan...

The correlation between lightning and several weather parameters (rainfall, humidity, air temperature, wind) in Padang from 2016 to 2020 was statistically analyzed. Lightning data were obtained two electric field mills (EFMs) the meteorology, climatology, geophysics agency (BMKG), Indonesia. study results show that highest occurred November during wet season. coefficient rainfall dry seasons 0.52 0.26, respectively. Furthermore, of with wind 0.25, 0.06, 0.15, -0.45, -0.02, These indicate a...

Narrow bandwidth is one of the problems in a microstrip antenna. Bandwidth enhancement proposed by applying dual-layer substrate. The bottom layer made from single-layer circular antenna design formula to get an initial dimension and then it simulated EM Simulator verify its performance whether meet specific requirement. optimized used as for top but without ground plane. uses substrate FR4 which has thickness 1.6 mm with dielectric constant 4.3. simulation result frequency band 40 LTE shows...

Polymer insulators tend to fail because of the climatic and environmental conditions. The failure occurs when surface insulator is contaminated by sea salt or cement dust which lead partial discharge (PD). Leakage currents will increase PD that causes deterioration insulation. To predict insulation failures, an adaptive neurofuzzy inference system (ANFIS) method using initial color detection processes are proposed estimate leakage based on polymer thermal images (infrared signature). In this...

This paper presents the construction of a Rogowski Coil sensor with an air core to detect partial discharge using digital oscilloscope. Two types sensors are used. The first is primary winding back wire, and second without labeled BW WBW, respectively. numbers primary-turn in 5, 10, 20, 40 turns. performance tested two tests. First, wave response test fixed imitation magnitude input used select optimum sensitivity lower sampling rate, aims peak or valley value as value. ramp check linearity...

Abstract This research proposes the use of a quad-slotted ground plane in enhancing bandwidth rectangular patch microstrip antenna. A feeding line is used for exciting antenna patch. On plane, there are 4 slots which designed form with same dimension. Each slot has height 22.5 mm and width 15.4 mm. The on FR4 epoxy dielectric constant 4.4 thickness 1.67 result shows that return loss -14.51 dB operating frequency 1,810 MHz LTE Band 3 Frequency, VSWR 2.19 gain 3.2 dBi. achieved 200 can cover range 3.

Abstract The Difference of Strength and Quality Signal on cellular networks is affected by the traffic cell shape region topology. One problems encountered in-service performance overshoot caused poor signal quality. Overshoot a condition where range power exceeds specified limits, till MS (Mobile Station) served distant not from closest cell. occurs due to boosting which aims improve service quality when there an increase in customer activity network antenna tilting method effective...

Crack sensing is a substantial segment for monitoring safety in infrastructure and caused commonly mechanical failure. This paper present triple band circular microstrip antenna with the resonant frequency lower 2.687 GHz, middle 4.997 Higher 9.518 GHz detect crack metallic material. Frequency operation each affected to that located ground plane. Simulation results show 30 mm shift 13 MHz lower, 63 143 higher resonant.

This study proposes a rectangular microstrip patch antenna design using shorting pin to get bandwidth enhancement and size reduced. Shorting is used in the located next position of coaxial feed point. The simulated an EM Simulator. final has dimension 40.5 mm x 32.1 (reduced by 26.62%). simulation result shows minimum return loss -16.9206 dB with 146.1 MHz. use increases 123%. gain 3.4733 dBi directional radiation pattern. proposed suitable for operating LTE band 40 support IoT applications.

This article discusses the results of community outreach activities related to impact radiation from cellular operator BTS towers in Aie Pacah Village, Koto Tangah District, Padang City. aims improve public understanding potential health impacts electromagnetic emitted by and provide accurate information based on scientific studies, especially amidst concerns local community. activity involved lecturers doctoral students field telecommunications engineering, presented expert speakers. The...

Water supply has been a growing regional issue in the Tampa Bay area for past several decades. The population of City and surrounding Hillsborough County continued to grow over 5 years. As consequence, experienced significant increases potable water demand. resulting strain on resources sent strong message that individual utilities should implement comprehensive management programs. These programs include range conservation measures manage customer demand coupled with accurately accounting...

Street lighting is needed to ensure road users' smooth running and safety. Lack of light will create a high risk accidents crime on the road. Many areas in Indonesia general West Sumatra particular, mainly rural areas, still need street due for regional capacity provide public roads. This activity implemented Nagari Lagan Mudik Punggasan, Linggo Sari Baganti District, Pesisir Selatan Province. A total five units have been installed four different locations. Installation lights using pole...

The hand held mobile communications need the antenna properties that smaller in size, stable omnidirectional radiation pattern, low profile and compatible with other devices. Therefore, it is necessary to investigate design of UWB antennas on these In this study, procedures for designing ultra wideband (UWB) microstrip initiated from form conventional patch obtained result using operating frequency have been studied. This research also implements so as obtain pattern. shows partial ground...

In this research, a quadrature hybrid coupler has been designed and built using substrate FR4 at frequency of 2.5 GHz. Conventionally, the narrow bandwidth. Tapered lines are proposed to increase its The line would make series arms curved. measurement results on indicate reflection loss -16.47 dB with an additional bandwidth about 100 MHz.