By Hema Singh, R. Chandini, Rakesh Mohan Jha
ISBN-10: 9812877622
ISBN-13: 9789812877628
ISBN-10: 9812877630
ISBN-13: 9789812877635
This publication provides electromagnetic (EM) layout and research of dipole antenna array over excessive impedance substrate (HIS). HIS is a popular substrate for low-profile antenna layout, due to its distinct boundary stipulations. Such substrates enable radiating parts to be published on them with none disturbance within the radiation features. furthermore HIS presents superior impedance matching, improved bandwidth, and elevated broadside directivity because of overall mirrored image from the reactive floor and excessive enter impedance. This booklet considers diversified configurations of HIS for array layout on planar and non-planar high-impedance surfaces. effects are offered for cylindrical dipole, published dipole, and folded dipole over unmarried- and double-layered square-patch-based HIS and dogbone-based HIS. The functionality of antenna arrays is analyzed by way of functionality parameters akin to go back loss and radiation trend. The layout provided exhibits appropriate go back loss and mainlobe achieve of radiation trend. This booklet offers an perception to EM layout and research of conformal arrays. This publication serves as an advent for rookies within the layout and research of HIS-based antenna arrays. It contains pictorial description of either planar and non-planar array layout and the designated dialogue of the functionality research of HIS-based planar and non-planar antenna array. it is going to turn out helpful to researchers and execs, alike.
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Extra resources for Low Profile Conformal Antenna Arrays on High Impedance Substrate
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56. All the design parameters are kept same as in 2-element dipole array design. The design frequency is 10 GHz. The return loss of 3-element dipole array over double-layered dogbone-based planar HIS is obtained as −68 dB, shown in Fig. 57. The radiation pattern of the array is shown in Fig. 2 dBi. 40 Low Profile Conformal Antenna Arrays on High Impedance Substrate 180 150 120 Phase (R) deg 90 60 30 0 -30 -60 -90 -120 -150 -180 1 2 3 4 5 6 7 8 9 10 Frequency (GHz) Fig. 49 Phase of reflection coefficient at the top of double-layered dogbone-based non-planar HIS L w Fig.
Fig. 59 2-Element folded dipole array on a double-layered dogbone-based non-planar HIS 46 Low Profile Conformal Antenna Arrays on High Impedance Substrate 0 -5 Return Loss (dB) -10 -15 -20 -25 -30 -35 10 11 12 13 Frequency (GHz) Fig. 60 Return loss of a 2-element folded dipole array on a double-layered dogbone-based non-planar HIS Fig. 61 Radiation pattern of a 2-element folded dipole array on a double-layered dogbone-based non-planar HIS 5 Low Profile Dipole Array on Planar and Non-planar … 47 Fig.
This reduces the antenna dimensions in terms of wavelength, and hence facilitates the antenna miniaturization. The performance of HIS is evaluated in terms of parameters like antenna gain, magnitude and phase of the reflection coefficient of the design. The results for two types of HIS, square-patch-based HIS and dogbone-based HIS are discussed. It is 6 Conclusion 49 observed that it is not only improved return loss, but also wider bandwidth is achieved with dogbone-based HIS, as compared to square patch-based HIS.
Low Profile Conformal Antenna Arrays on High Impedance Substrate by Hema Singh, R. Chandini, Rakesh Mohan Jha
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