scholarly journals Effects on the radiation characteristics of using a corrugated reflector with a helical antenna and an electromagnetic band-gap reflector with a spiral antenna

2005 ◽  
Vol 53 (1) ◽  
pp. 191-199 ◽  
Author(s):  
H. Nakano ◽  
K. Hitosugi ◽  
N. Tatsuzawa ◽  
D. Togashi ◽  
H. Mimaki ◽  
...  
Keyword(s):  
Band Gap ◽  
Spiral Antenna ◽  
Helical Antenna ◽  
Radiation Characteristics ◽  
Electromagnetic Band Gap

scholarly journals Multifeed EBG Dual-Band Antenna for Spatial Mission

2011 ◽  
Vol 2011 ◽  
pp. 1-14 ◽  
Author(s):  
A. Kanso ◽  
R. Chantalat ◽  
U. Naeem ◽  
H. Chreim ◽  
M. Thevenot ◽  
...  
Keyword(s):  
Band Gap ◽  
Longitudinal Direction ◽  
High Gain ◽  
Reflector Antenna ◽  
Dual Band ◽  
Frequency Selective Surfaces ◽  
Radiation Characteristics ◽  
Space Applications ◽  
Electromagnetic Band Gap ◽  
Dual Band Antenna

We present the design of a multibeam reflector antenna fed by a multifeed dual-band electromagnetic band gap (EBG) antenna to achieve a high-gain multispot coverage for space applications. First, we design a dual-band EBG antenna in monofeed configuration. This antenna is composed of double-layer frequency selective surfaces (FSSs) arranged in the longitudinal direction and a square horn as a feed. Then, the same antenna in multifeed configuration is studied, and the results are compared to those obtained in monofeed configuration in order to emphasize the problem of coupling, generally encountered in multifeed configuration. Consequently, filters are used in order to reduce the parasitic interferences and obtain good radiation characteristics. As shown in this paper, the same EBG phase center is obtained in both frequency bands. Finally, we have studied the whole system composed of the offset reflector and the multifeed EBG dual-band antenna. An edge of coverage (EOC) gain higher than 42 dBi and sidelobes levels lower than −18 dBi are obtained over all spots.

Broadband Archimedean spiral antenna above a loaded electromagnetic band gap substrate

2007 ◽  
Vol 1 (1) ◽  
pp. 212 ◽  
Author(s):  
L. Schreider ◽  
X. Begaud ◽  
M. Soiron ◽  
B. Perpere ◽  
C. Renard
Keyword(s):  
Band Gap ◽  
Spiral Antenna ◽  
Archimedean Spiral ◽  
Electromagnetic Band Gap

scholarly journals Study of Four Element Microstrip Antenna Array Using Patch Type Electromagnetic Band Gap Structure

2018 ◽  
Vol 8 (5) ◽  
pp. 3470-3474
Author(s):  
K. P. Rao ◽  
P. V. Hunagund ◽  
R. M. Vani
Keyword(s):  
Band Gap ◽  
Antenna Array ◽  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Radiation Characteristics ◽  
Patch Type ◽  
Electromagnetic Band Gap ◽  
Microstrip Antenna Array ◽  
Band Gap Structure ◽  
Gap Structure

This paper describes enhancements in the performance of four element microstrip antenna array. The conventional microstrip antenna array is producing gain equal to 6.81dB. With the introduction of U shape patch type electromagnetic band gap structure, the proposed microstrip antenna array is producing an improved gain of 20.33dB. It is producing reduced mutual coupling of -31.44, -36.41 and -31.62dB respectively. The radiation characteristics of the proposed microstrip antenna array are improved with appreciable decrease in back lobe radiation and increase in forward power. It is resonating at single band at 5.53GHz, producing an overall bandwidth of 109.45%, against 4.89% of conventional microstrip antenna array. Microstrip antenna arrays are designed using Mentor Graphics IE3D software and measured results are obtained using vector network analyzer.

Sign in / Sign up

Export Citation Format

Share Document