Miniaturized UWB Half-Vivaldi Antenna Based on Mirror Image Theory

Author(s):  
Yuan Xue ◽  
Shufang Liu ◽  
Dalin Zhang ◽  
Xiaowei Shi
2020 ◽  
Vol 19 (4) ◽  
pp. 695-699 ◽  
Author(s):  
Zhangfei Yin ◽  
Guoqiang He ◽  
Xue-Xia Yang ◽  
Steven Gao

Electronics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 667
Author(s):  
Raza Ullah ◽  
Sadiq Ullah ◽  
Farooq Faisal ◽  
Rizwan Ullah ◽  
Dong-you Choi ◽  
...  

In this paper, antipodal Vivaldi antenna is designed for 5th generation (5G) mobile communication and Ku-band applications. The proposed designed has three layers. The upper layer consists of eight-element array of split-shaped leaf structures, which is fed by a 1-to-8 power divider network. Middle layer is a substrate made of Rogers 5880. The bottom layer consists of truncated ground and shorter mirror-image split leaf structures. The overall size of the designed antenna is confined significantly to 33.31 × 54.96 × 0.787 (volume in mm3), which is equivalent to 2λo× 3.3λo× 0.05λo (λo is free-space wavelength at 18 GHz). Proposed eight elements antenna is multi-band in nature covering Ku-bands (14.44–20.98 GHz), two millimeter wave (mmW) bands i.e., 24.34–29 GHz and 33–40 GHz, which are candidate frequency bands for 5G communications. The Ku-Band is suitable for radar applications. Proposed eight elements antenna is very efficient and has stable gain for 5G mobile communication and Ku-band applications. The simulation results are experimentally validated by testing the fabricated prototypes of the proposed design.


2020 ◽  
Vol 2 (1) ◽  
pp. 1-20
Author(s):  
Gandung Nuswantoro ◽  
Yusuf Zaenal Abidin ◽  
Paryati Paryati

Pendam III/Siliwangi dalam menjalankan tugas adalah menyampaikan informasi secara benar dan profesional. Memberikan tanggapan yang simpatik manakala ada suatu informasi yang dianggap dapat merugikan citra positif Kodam III/Siliwangi. Selain itu sebagai institusi yang sekaligus agen informasi, bertugas mengolah informasi, mengelola informasi, baik untuk pihak internal maupun eksternal. Tujuan dari penelitian ini adalah untuk mengetahui strategi yang dilaksanakan oleh Pendam III/Siliwangi dalam meningkatkan citra positif. Metode penelitian yang digunakan adalah metode studi kualitatif. Adapun teknik pengumpulan data dalam penelitian ini dilakukan dengan wawancara, observasi dan dokumentasi. Kerangka berfikir atau landasan teori yang digunakan dalam penelitian ini, yaitu menggunakan teori strategi yaitu formulasi misi, tujuan dan objektif dasar perusahaan, program dan kebijakan untuk mencapainya dan metode yang diperlukan untuk memastikan bahwa strategi di implementasikan untuk mencapai tujuan-tujuan perusahaan. teori citra di dalamnya terdapat jenis-jenis citra (mirror image, current image, wish image, multiple image). Hasil dari penelitian ini menunjukan bahwa strategi yang dilakukan Pendam III/Siliwangi yaitu melaksanakan program-progam kegiatan dalam rangka untuk meningkatkan citra positif. Dalam meningkatkan citra memperhatikan unsur citra yaitu (mirror image, current image, wish image, multiple image) sebagai acuan meningkatkan citra positif. Pendam III/Siliwangi in carrying out the duty is to convey information correctly and professional. Provide sympathetic responses when there is information that is considered to harm the positive image of Kodam III/Siliwangi. In addition, as an institution as well as an information agent, in charge of processing information, managing information, both for internal and external parties. The purpose of this research is to know the strategy implemented by Pendam III/Siliwangi in improving the positive image. The research method used is qualitative study method. The data collection technique in this research is done by interview, observation and documentation. The framework of thinking or the theoretical basis used in this research, which is using strategy theory is mission formulation, objective and basic objective of company, program and policy to achieve it and method needed to ensure that strategy implemented to achieve company goals. image theory in it there are types of images (mirror image, current image, wish image, multiple image). The result of this research shows that the strategy of Pendam III/Siliwangi is to carry out activities programs in order to improve the positive image. In improving the image pay attention to the image element that is (mirror image, current image, wish image, multiple image) as a reference to improve the positive image.


Cogito ◽  
1997 ◽  
Vol 11 (3) ◽  
pp. 199-205
Author(s):  
Edward Slowik ◽  
Keyword(s):  

1968 ◽  
Vol 70 (6, Pt.1) ◽  
pp. 782-793 ◽  
Author(s):  
Gordon G. Gallup
Keyword(s):  

2019 ◽  
Vol 45 (1) ◽  
pp. 111-124 ◽  
Author(s):  
Thitaporn Chaisilprungraung ◽  
Joseph German ◽  
Michael McCloskey
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document