402 research outputs found
Design of LNA at 5.8GHz with Cascode and Cascaded Techniques Using T-Matching Network for WiMAX Applications
This project presents a 5.8 GHz Low Noise Amplifier (LNA) design with cascode and cascaded techniques using T-matching network applicable for IEEE 802.16 standard.The amplifier uses the FHX76LP Low Noise SuperHEMT FET. The design simulation process is done by using the Advance Design System (ADS) software. The cascode and cascaded low noise amplifier (LNA) produces a gain of 53.4dB and noise figure (NF) of 1.2dB. The input reflection (S11) and output return loss (S22) are -24.3dB and -23.9dB respectively. The input sensitivity is complying with the IEEE 802.16 standards
Low Noise Amplifier at 5.8GHz with Cascode and Cascaded Techniques Using T-Matching Network for Wireless Applications
This paper present a 5.8 GHz low noise amplifier (LNA) design with cascode and cascaded techniques using T-matching network applicable for IEEE 802.16 standard. The amplifier use FHX76LP Low Noise SuperHEMT FET. The design simulation process is using Advance Design System (ADS) software. The cascode and cascaded low noise amplifier (LNA) produced gain of 36.52dB and noise figure (NF) at 1.2dB. The input reflection (S11) and output return loss (S22) are -21.1dB and -27.7dB respectively. The bandwidth of the amplifier is more than 1GHz. The input sensitivity is complying with the IEEE 802.16 standards
Low Noise Amplifier at 5.8GHz with Cascode and Casc aded Techniques Using T-Matching Network for Wireless Ap plications
This project present a design of a 5.8 GHz low noise amplifier (LNA) design with cascode and cascaded techniques using T-matching network applicable for IEEE 802.16 standard. The amplifier use FHX76LP Low Noise SuperHEMT FET. The LNA designed used T-matching network consisting of lump element reactive element at the input and the output terminal. The cascode and cascaded low noise amplifier (LNA) produced gain of 36.8dB and noise figure (NF) at 1.3dB. The input reflection (S11) and output return loss (S22) are -11.4dB and -12.3dB respectively. The bandwidth of the amplifier is more than 1GHz. The input sensitivity is compliant with the IEEE 802.16 standards.DOI:http://dx.doi.org/10.11591/ijece.v1i1.6
Collaborative product development implementation between Malaysian auto suppliers and their customer
Whilst the evidence indicated that supplier involvement in product development resulted in
reduced development cost, improves product quality, reduces lead time and enhances flexibility,
the mechanism for adapting and managing it to fit an.other culture and organisation is a
challenging endeavour. In the Malaysian automotive industries, this collaborative effort had been
mostly motivated by the government policies and initiated by the anchor firms. The work
reported in the paper describes features of this collaboration carried out by Proton, the pioneer
automotive manufacturing company in Malaysia. The objective of this paper is to examine the
factors for successful collaborative product development endeavours. The study identifies how
collaborative product development is presently being organized and managed in the automotive
industry in Malaysia. The product development process is traced to the three aspects involved in
collaborative product development; the buyer, the supplier and the process that involves both
parties. The findings from this study suggest that from the buyer perspectives, selection of
suppliers determines the success of this effort. For the supplier, it is important for them to have
technical and design expertise. Factors that involve both the suppliers and buyers include early
supplier involvement and buyer-supplier relationships
Electronic Patient Record for Dental Charting
The use of electronic patient records has a great positive potential to improve clinical practice and patient safety. These improvements can be realized through improved legibility and communication, standardized documentation, streamlined storage and consistent reporting. This paper addresses the development of an electronic patient record for dental charting as an alternative means towards a user-friendly and patient-centered dental environment. It considers prevalent dental charting practices, proposes a patient dental database and presents a dental charting application prototype, capable of capturing and displaying patient dental records. Data from this database is mapped and can be further manipulated through the patient's interactive dental chart. This interactivity not only offer quick-to-comprehend interfaces, but also reduces miscommunicationss. It will affect positively the legibility of dental records, enable a standardized documentation and a more consistent reporting
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Recent Development in Sexual Harassment Law in Malaysia: Whither the Victim's Protection?
YesBefore 2012, there was no law on sexual harassment in Malaysia. However, when the
Employment Act 1955 was amended in 2012, employers must inquire into sexual harassment
complaints, failing which a criminal penalty will be imposed. Unfortunately, the new law did
not allow a complainant to claim damages from the harasser or the employer. After more
than two decades of campaigns by women's rights groups and NGOs, the Anti-Sexual
Harassment Bill 2021 (hereinafter 'the ASHB 2021') was finally enacted and passed in July this
year. Given the novelty and absence of any academic research, this paper seeks to examine
the provisions of the Bill critically to understand its scope, coverage and broader implications
for sexual harassment victims. The paper employs a qualitative research methodology,
adopting a doctrinal approach and content analysis of the primary source, the ASHB 2021,
that would provide a deeper understanding of the legislation. The authors contend that
despite being regarded as a victim-centric law, the Bill is half-baked and inadequate to protect
sexual harassment victims due to its failure to include significant provisions on the sexual
harassment definition, the protection against victimisation and employers' obligations to
prevent and address such conduct.The authors would like to express their gratitude to the Faculty of Law, Universiti Teknologi MARA (UiTM) Shah Alam, Selangor, Malaysia, which facilitated the writing and publication workshop and funded this paper
Concentration Dependence of Superconductivity and Order-Disorder Transition in the Hexagonal Rubidium Tungsten Bronze RbxWO3. Interfacial and bulk properties
We revisited the problem of the stability of the superconducting state in
RbxWO3 and identified the main causes of the contradictory data previously
published. We have shown that the ordering of the Rb vacancies in the
nonstoichiometric compounds have a major detrimental effect on the
superconducting temperature Tc.The order-disorder transition is first order
only near x = 0.25, where it cannot be quenched effectively and Tc is reduced
below 1K. We found that the high Tc's which were sometimes deduced from
resistivity measurements, and attributed to compounds with .25 < x < .30, are
to be ascribed to interfacial superconductivity which generates spectacular
non-linear effects. We also clarified the effect of acid etching and set more
precisely the low-rubidium-content boundary of the hexagonal phase.This work
makes clear that Tc would increase continuously (from 2 K to 5.5 K) as we
approach this boundary (x = 0.20), if no ordering would take place - as its is
approximately the case in CsxWO3. This behaviour is reminiscent of the
tetragonal tungsten bronze NaxWO3 and asks the same question : what mechanism
is responsible for this large increase of Tc despite the considerable
associated reduction of the electron density of state ? By reviewing the other
available data on these bronzes we conclude that the theoretical models which
are able to answer this question are probably those where the instability of
the lattice plays a major role and, particularly, the model which call upon
local structural excitations (LSE), associated with the missing alkali atoms.Comment: To be published in Physical Review
Does China's public assistance scheme create welfare dependency? An assessment of the welfare of the Urban Minimum Living Standard Guarantee
In China, there are increasing concerns among the public and academics on welfare dependency caused the 'generous' of benefits of the Urban Minimum Living Standard Scheme (UMLSS). This study examines this issue by analysing the levels of the UMLSS according to international poverty measurements as well as reporting the life experiences of MLSS beneficiaries in Guangzhou city. It concludes that the UMLSS assistance is actually too low to reduce claimants’ work motivation. Instead, supplementary benefits associated with the UMLSS contributing to the recipients’ staying in China’s public assistance scheme in order to gain access to basic housing, health and educational services
All-particle cosmic ray energy spectrum measured with 26 IceTop stations
We report on a measurement of the cosmic ray energy spectrum with the IceTop
air shower array, the surface component of the IceCube Neutrino Observatory at
the South Pole. The data used in this analysis were taken between June and
October, 2007, with 26 surface stations operational at that time, corresponding
to about one third of the final array. The fiducial area used in this analysis
was 0.122 km^2. The analysis investigated the energy spectrum from 1 to 100 PeV
measured for three different zenith angle ranges between 0{\deg} and 46{\deg}.
Because of the isotropy of cosmic rays in this energy range the spectra from
all zenith angle intervals have to agree. The cosmic-ray energy spectrum was
determined under different assumptions on the primary mass composition. Good
agreement of spectra in the three zenith angle ranges was found for the
assumption of pure proton and a simple two-component model. For zenith angles
{\theta} < 30{\deg}, where the mass dependence is smallest, the knee in the
cosmic ray energy spectrum was observed between 3.5 and 4.32 PeV, depending on
composition assumption. Spectral indices above the knee range from -3.08 to
-3.11 depending on primary mass composition assumption. Moreover, an indication
of a flattening of the spectrum above 22 PeV were observed.Comment: 38 pages, 17 figure
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