Category: Repo

Improving Performance and Size Reduction of Truncated Microstrip Antenna Using U Slot for LTE Application

Posted on by 4dm1n_b3r

http://repository.uhamka.ac.id/id/eprint/17215/

Improving Performance and Size Reduction of Truncated Microstrip Antenna Using U Slot for LTE Application

Alam, Syah

This paper proposed new design of truncated microstrip antenna with U slot for LTE application at work frequency of 2300 MHz. The addition of slot with U shape aims to reduce return loss and VSWR from antenna, beside that giving U slot also can reduce the dimension of antenna to be more compact. The proposed antenna have been design. The proposed antenna, designed and realized using a FR4 Epoxy substrate with a dielectric constant (εr) of 4.3, a thickness (h) of 1.6 mm and a loss tan (tan α) of 0.0265 . From the measurement result obtained return loss of -22.95 dB and VSWR of 1.1.5 at working frequency of 2300 MHz with bandwidth of 250 MHz (2100 -2350 MHz). The addition of U slot has been successfully improved the value of return loss until 43 % and VSWR until 15 % compared with truncated microstrip antenna without U slot. Beside that, the dimension of microstrip antenna have been reduced until 17.87 % after using U slot.

http://repository.uhamka.ac.id/id/eprint/17215/1/5-Improving%20Performance%20and%20Size%20Reduction%20of%20Truncated%20Microstrip%20antenna.pdf

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Learning trajectory based on fractional sub-constructs Using fractions as quotients to introduce fractions

Posted on by 4dm1n_b3r

http://repository.uhamka.ac.id/id/eprint/17198/

Learning trajectory based on
fractional sub-constructs Using
fractions as quotients to
introduce fractions

Ishaq, Nuriadin

http://repository.uhamka.ac.id/id/eprint/17198/1/3.%20Learning%20trajectory%20based%20on%20fractional%20sub-co%20similarity.pdf

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Micro – ring resonator with variety of gap width for acid rain sensing application: preliminary study

Posted on by 4dm1n_b3r

http://repository.uhamka.ac.id/id/eprint/17218/

Micro – ring resonator with variety of gap width for acid rain sensing application: preliminary study

Ramza, Harry

The acid rain is an environmental disaster that it will be intimidates human life. The development micro-ring resonator sensor created from SOI (Silicon on insulator) and it used to detect acid rain index. In this study, the LUMERICAL software was used to simulate SOI material micro-ring resonator. The result shows the optimum values of fixed parameters from ring resonator have dependent variable in gap width. The layers under ring resonator with silicone (Si) and wafer layer of silicone material (Si) were added to seen three conditions of capability model. Model – 3 is an additional of bottom layer that gives the significant effect on the factor of quality. The optimum value is a peak value that given by the FSR calculation. FSR = 0, it means that is not shows the light propagation in the ring resonator and none of the light coming out on the bus – line.

http://repository.uhamka.ac.id/id/eprint/17218/1/6-Micro%20%E2%80%93%20ring%20resonator%20with%20variety%20of%20gap%20width%20for%20acid%20rain%20sensing%20application%20preliminary%20study.pdf

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How do Indonesian elementary school mathematics textbooks introduce fractions

Posted on by 4dm1n_b3r

http://repository.uhamka.ac.id/id/eprint/17200/

How do Indonesian
elementary school
mathematics textbooks
introduce fractions

ishaq, nuriadin

http://repository.uhamka.ac.id/id/eprint/17200/1/5.%20How%20do%20Indonesian%20elementary%20school%20mathematics%20textbooks%20introduce%20fractions%20similarity.pdf

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ENHANCING OF STUDENTS’ MATHEMATICAL REFLECTIVE THINKING ABILITY THROUGH KNOWLEDGE SHARING LEARNING STRATEGY IN SENIOR HIGH SCHOOL

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http://repository.uhamka.ac.id/id/eprint/17201/

ENHANCING OF STUDENTS’
MATHEMATICAL REFLECTIVE
THINKING ABILITY THROUGH
KNOWLEDGE SHARING
LEARNING STRATEGY IN
SENIOR HIGH SCHOOL

ishaq, nuriadin

http://repository.uhamka.ac.id/id/eprint/17201/1/6.%20ENHANCING%20OF%20STU%20similarity.pdf

Unduh!