Investigation On One-dimensional Phase Scanning Antenna Array

One-dimensional phase scanning antenna array is an important part of radar technology and modern communication technology.The increasing military and civilian requirements in various fields have promoted the rapid development of one-dimensional phased scanning antenna array.High performance one-dimensional phase scanning antenna arrays are urgently needed in various application fields.One-dimensional phase scanning antenna array is one of the key technologies of the new generation antenna array.It uses antenna elements to form a linear array for beamforming,and then the planar array is composed of linear arrays.The phase scanning is scanned on a dimension.It has the characteristics of flexible and controllable beam,low sidelobe level,etc.This paper focuses on the following aspects of the one-dimensional phase sweep scanning antenna:Firstly,in order to realize the one-dimensional phase scanning antenna of the 5th generation mobile communication frequency band in 27.5GHz-28.5GHz,the Vivaldi antenna array is designed and implemented.The Vivaldi antennas are arranged side by side to form an E plane eight-element array,which is fed by a one-eigh power divider network composed of suspended microstrip lines and a SMPM connector to reduce the antenna feed loss effectively,improve the antenna noise figure,transmission and reception efficiency.The measured results show that: In 27.5GHz~28.5 GHz,the S11 is less than-10 d B,the gain is higher than 13 d B,and the sidelobe level is lower than-12 d B.Then the one-dimensional phase scanning simulation of the planar array composed of 8 element linear arrays is carried out.The results show that both the gain and the sidelobe levels meet the requirements in the range of 64.8° beam scanning.Secondly,in order to realize the one-dimensional phase scanning antenna of the satellite frequency band in 12.25GHz-12.75 GHz,the one-dimensional array of ridge waveguide slot antenna is designed and implemented.The ridge waveguides are slotted and formed into eight slot array,and then the power distribution is carried out by a one-two power divider of the ridge waveguide.Finally the SMA connecter is used to feed the ridge waveguide.The measured results shows that: In 12.25GHz~12.75 GHz,the S11 is less than-7d B,the gain is higher than 13 d B,and the side lobe is below-12 d B.Then the one-dimensional phase scanning simulation of the planar array composed of 8-slot linear arrays is carried out.The results show that both the gain and the sidelobes levels meet the requirements in the range of 58.2° beam scanning.Finally,in order to realize the one-dimensional omnidirectional antenna in 14GHz-16 GHz frequency band,an eight-element U-slot rectangular microstrip patch antenna array is designed and implemented.The elements are arranged in the opposite direction of the adjacent U-slot elements to form a one-dimensional array,and then the power distribution is carried out by the microstrip power divider.Finally power is fed through the SMPM surface mount connector.The measured results show that: In 14GHz~16 GHz,the S11 is less than-15 d B,the gain is higher than 14 d B,and the side lobe is below-12 d B.Then the circular arc array composed of U-slot microstrip patch antenna array with 8 elements is simulated,and the required radiation pattern is obtained by adjusting the feed phase of 8 units separately.