نتایج جستجو برای: radiation patterns
تعداد نتایج: 642282 فیلتر نتایج به سال:
As an example of extreme hot humid climate, the southern marginal rim of Iran is a perfect candidate for studying climatic patterns. Attention to climatic components in housing design process within this area is therefore essential. Benefitting from the airflow and avoiding heat and radiation are among the most effective approaches towards moderating heat conditions in hot and humid areas. ...
Leaffall phenology is an important periodical event in forests, contributing to mobilization of organic matter from primary producers to soil. For seasonal forests, leaffall periodicity has been related to rainfall regime and dry season length. In weakly seasonal forests, where there is no marked dry season, other climatic factors could trigger leaf shed. In this study, we aimed to determine if...
This paper presents a high-efficiency ferrite meander antenna (HEMA), which can be used to realize a 2 × 2 multipleinput-multiple-output (MIMO) communication system when it is used at both the transmitter and the receiver ends. This antenna is designed to operate at 2.45GHz center frequency (fc). It consists of two spatially separated half-cycle microstrip meander structures. Ferrite material i...
This paper presents a compact sized inset-fed rectangular microstrip patch antenna embedded with double-P slots. The proposed antenna has been designed and fabricated on ceramic-PTFE composite material substrate of high dielectric constant value. The measurement results from the fabricated prototype of the antenna show -10 dB reflection coefficient bandwidths of 200 MHz and 300 MHz with center ...
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