Open AccessControl Radiation Pattern for Half Width Microstrip Leaky Wave Antenna by Using PIN Diodes
Author(s) -
Mowafak K. Mohsen,
Mohd Sa'ari Mohamad Isa,
Zahriladha Zakaria,
Azmi Awang Md Isa,
M. K. Abdulhameed,
Mothana L. Attiah
Publication year - 2018
Publication title -
international journal of electrical and computer engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.277
H-Index - 22
ISSN - 2088-8708
DOI - 10.11591/ijece.v8i5.pp2959-2966
Subject(s) - leaky wave antenna , antenna (radio) , pin diode , radiation pattern , microstrip , main lobe , optics , radiation , physics , diode , optoelectronics , electrical engineering , microstrip antenna , computer science , telecommunications , engineering
In this paper, a novel design for single-layer half width microstrip leakywave antenna (HW-MLWA) is demonstrated. This model can be digitally control its radiation pattern at operation frequency and uses only two values of the bias voltage, with better impedance matching and insignificant gain variation. The scanning and controlling the radiation pattern of leaky-wave antennas (LWA) in steps at an operation frequency, by using switches PIN diodes, is investigated and a novel HW-MLWA is introduced. A control cell reconfigurable, that can be switched between two states, is the basic element of the antenna. The periodic LWA is molded by identical control cells where as a control radiation pattern is developed by combining numerous reconfigurable control cells. A gap capacitor is independently connected or disconnected in every unit cell by using a PIN diode switch to achieve fixedfrequency control radiation pattern scanning. The profile reactance at the free edge of (HW-MLWA) and thus the main lobe direction is altered by changing the states of the control cell. The antenna presented in this paper, can scan main beam between 18o to 44o at fixed frequency of 4.2 GHz with measured peak gain of 12.29 dBi.