期刊名称：International Journal of Electrical and Computer Engineering
电子版ISSN：2088-8708
出版年度：2018
卷号：8
期号：5
页码：2959-2966
DOI：10.11591/ijece.v8i5.pp2959-2966
语种：English
出版社：Institute of Advanced Engineering and Science (IAES)
摘要：In this paper, a novel design for single-layer half width microstrip leaky-wave antenna (HW-MLWA) is demonstrated. This model can 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 whereas 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 fixed-frequency 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 the main beam between 18 o to 44 o at a fixed frequency of 4.2 GHz with a measured peak gain of 12.29 dBi.
其他摘要：In this paper, a novel design for single-layer half width microstrip leaky-wave antenna (HW-MLWA) is demonstrated. This model can 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 whereas 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 fixed-frequency 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 the main beam between 18 o to 44 o at a fixed frequency of 4.2 GHz with a measured peak gain of 12.29 dBi.
