طراحی و ساخت آنتن پهن باند با قطبش دایروی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه برق/ دانشگاه آزاد اسلامی واحد تهران مرکزی/تهران/ایران

2 دانشگاه علم و صنعت ایران

3 دانشیار و هیات علمی دانشگاه صنعتی مالک اشتر تهران

چکیده

در این مقاله می‏خواهیم یک آنتن پهن باند با قطبش دایروی طراحی نماییم. اگر امپدانس بار بهینه­ تقویت‏کننده در فرکانس­های مختلف، به هم نزدیک باشند، می­توان آنتن را به­عنوان بار بهینه برای تقویت­کننده به­کار گرفت. در حالی که در این مقاله خروجی آنتن پس از اعمال سیگنال در باند فرکانسی S بررسی شده است و اثرات تابش آنتن بر روی بخش مدارات تطبیق تقویت‏کننده تا حدودی در نظر گرفته شده است.

کلیدواژه‌ها


عنوان مقاله [English]

Design and Construction of a Wide Band Antenna with Circular Polarization

نویسندگان [English]

  • SAM MOEINI 1
  • alireza omidvar 2
  • Seyyed Hossein Mohseni armaki 3
1 Department of electrical engineering /islamic AZAD university central branch of Tehran
2 Iran University Siecence and Tecnology (IUST)
3 Malek Ashtar University
چکیده [English]

Circular polarization is one of the most popular polarization approaches used in different communication systems such as radar, satellite, GPS and WiMAX systems. In this article, we want to design a wideband cylindrical antenna with circular polarization and maximum frequency coverage from 1.7 to 2.7 GHZ. If the optimum load impedance of the amplifier at different frequencies are close, the antenna can be used as an optimal load for the amplifier. In this paper the output of the antenna after application of signals in the S band is also investigated and the effects of the antenna radiation on the amplifier circuits have been considered to some extent.  

کلیدواژه‌ها [English]

  • broadband antenna
  • antenna amplifier
  • S band frequency
  • microstrip antenna
  • circular polarization
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