A design method of array antennas taking into account mutual coupling between elements: Uniform arrays consisting of parallel half-wavelength dipoles

2002 ◽  
Vol 86 (1) ◽  
pp. 1-15
Author(s):  
Koji Nagasawa ◽  
Ryoji Kitoh ◽  
Tomokazu Kondo ◽  
Nozomu Hasebe
Keyword(s):  
Mutual Coupling ◽  
Design Method ◽  
Array Antennas ◽  
Half Wavelength

scholarly journals Thermos Array: Two-Dimensional Sparse Array with Reduced Mutual Coupling

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Lei Sun ◽  
Minglei Yang ◽  
Baixiao Chen
Keyword(s):  
Closed Form ◽  
Degrees Of Freedom ◽  
Mutual Coupling ◽  
Doa Estimation ◽  
Two Dimensional ◽  
Spatial Smoothing ◽  
Planar Arrays ◽  
Half Wavelength ◽  
Planar Array ◽  
Small Spacing

Sparse planar arrays, such as the billboard array, the open box array, and the two-dimensional nested array, have drawn lots of interest owing to their ability of two-dimensional angle estimation. Unfortunately, these arrays often suffer from mutual-coupling problems due to the large number of sensor pairs with small spacing d (usually equal to a half wavelength), which will degrade the performance of direction of arrival (DOA) estimation. Recently, the two-dimensional half-open box array and the hourglass array are proposed to reduce the mutual coupling. But both of them still have many sensor pairs with small spacing d, which implies that the reduction of mutual coupling is still limited. In this paper, we propose a new sparse planar array which has fewer number of sensor pairs with small spacing d. It is named as the thermos array because its shape seems like a thermos. Although the resulting difference coarray (DCA) of the thermos array is not hole-free, a large filled rectangular part in the DCA can be facilitated to perform spatial-smoothing-based DOA estimation. Moreover, it enjoys closed-form expressions for the sensor locations and the number of available degrees of freedom. Simulations show that the thermos array can achieve better DOA estimation performance than the hourglass array in the presence of mutual coupling, which indicates that our thermos array is more robust to the mutual-coupling array.

Analysis and design methods of planar array antennas with slotted waveguides taking into account mutual coupling

1989 ◽  
Vol 72 (10) ◽  
pp. 103-110 ◽  
Author(s):  
Yoshihiko Konishi ◽  
Hitoshi Mizutamari ◽  
Shin-Ichi Sato ◽  
Seiji Mano ◽  
Takashi Katagi
Keyword(s):  
Mutual Coupling ◽  
Design Methods ◽  
Analysis And Design ◽  
Array Antennas ◽  
Planar Array

Scanning characteristics of spherical dome antenna composed of arcing dipole array antennas including the effects of mutual coupling between elements

1988 ◽  
Vol 71 (8) ◽  
pp. 91-101
Author(s):  
Tadahiko Maeda ◽  
Kunio Sawaya ◽  
Saburo Adachi ◽  
Yasuto Mushiake
Keyword(s):  
Mutual Coupling ◽  
Spherical Dome ◽  
Array Antennas

scholarly journals A Band-Rejection Vivaldi Antenna with High Selectivity Using Hybrid HRW/CCLL

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Mengfei Xiong ◽  
Junping Duan ◽  
Binzhen Zhang
Keyword(s):  
Frequency Band ◽  
Design Method ◽  
Directional Pattern ◽  
Impedance Bandwidth ◽  
Ieee 802.11A ◽  
Notch Band ◽  
Notched Band ◽  
Half Wavelength ◽  
Measurement Results ◽  
Vivaldi Antenna

A simplified notched design method for the Vivaldi antenna is exhibiting high frequency-band-selectivity characteristics. By suitably introducing half-wavelength resonator (HWR) and complementary capacitively loaded loop (CCLL), the notched-band selectivity is promoted while maintaining the wide impedance bandwidth of the antenna applicable for wireless communications. HWR is bent in the middle to focus the first notch pole, and the second notch pole is obtained by CCLL on the radiating patch. Additionally, the resonant frequency of the notched pole can be determined by the position and size of two loaded resonators in theoretical analysis, thereby realizing a wideband antenna with the desired notched band. Finally, the Vivaldi antenna of loading resonator was fabricated to verify the feasibility of this new method. Measured and simulated experimental results reveal that the antenna exhibits directional pattern in the passband, low gain at the band-rejection, and excellent selectivity within a frequency range. The simulation and measurement results are in good agreement. The proposed antenna achieves S11<−10 dB in 2.6–13.7 GHz and a notch band from 4.49 to 6.64 GHz to reject IEEE 802.11a and HIPERLAN/2 frequency band. Moreover, the proposed antenna has good frequency selectivity, and its gain is good enough in the passband with peak gain up to 10.8 dBi. This antenna design presents frequency suitability, demonstrating that a UWB antenna with a controllable notched band has been realized.

Mutual coupling compensation in small planar array antennas

1998 ◽  
Vol 145 (1) ◽  
pp. 1 ◽  
Author(s):  
P. Darwood ◽  
P.N. Fletcher ◽  
G.S. Hilton
Keyword(s):  
Mutual Coupling ◽  
Array Antennas ◽  
Planar Array

A study on mutual coupling compensation method of array antennas

2003 ◽  
Vol 87 (3) ◽  
pp. 59-73
Author(s):  
Takayuki Inaba ◽  
Teijiro Sakamoto ◽  
Ryu Miura ◽  
Masayuki Oodo ◽  
Kiyomichi Araki
Keyword(s):  
Mutual Coupling ◽  
Compensation Method ◽  
Array Antennas

Compensation of mutual coupling in multi-element array antennas

2008 ◽  
Author(s):  
Y. P. Huang ◽  
F. Le Pennec ◽  
M. Ney ◽  
Y. L. Lu
Keyword(s):  
Mutual Coupling ◽  
Array Antennas ◽  
Element Array
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