Inhomogeneous lens antenna design with fan-beam radiation pattern

Mohammad Mahdi Taskhiri; Mohammad Khalaj-Amirhosseini

doi:doi:10.3788/COL201614.121601

Chinese Optics Letters, 2016, 14 (12): 121601, Published Online: Aug. 2, 2018

Inhomogeneous lens antenna design with fan-beam radiation pattern Download： 1081次

Mohammad Mahdi Taskhiri ^*Mohammad Khalaj-Amirhosseini

Author Affiliations

School of Electrical Engineering, Iran University of Science and Technology, Tehran 1684613114, Iran

Figures & Tables

Fig. 1. Typical structure of an inhomogeneous and asymmetric lens.

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Fig. 2. Sample plane cross-section view of asymmetrical lens, whose thickness and aperture diameter are f and 2d. Each beam ray leaves from a point source at an angle α with respect to the z-axis and propagates through the lens.

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Fig. 8. Normalized radiation pattern of the lens antenna and source antenna at a frequency of 10 GHz. The directivity of the source antenna is 6.92 dBi and that of the lens antenna is 20 dBi.

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Fig. 9. 3D radiation pattern loss of lens with WR90 antenna feeding at a frequency of 10 GHz.

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Fig. 10. Normalization radiation pattern of lens on E and H planes.

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Table1. 3D Lens Antenna’s Pattern Information

Frequency (GHz)	Directivity (dBi)	SLL (dB)	Back Lobe Level (dB)	E plane half-power beam width EP-HPBW* (deg.)	H plane half-power beam width HP-HPBW* (deg.)	(HP-HPBW)/(EP-HPBW)
8	18.4	$- 16.5$	$- 18.5$	15	27.3	1.82
9	19.3	$- 20$	$- 220$	13.7	24.8	1.81
10	20	$- 26.2$	$- 20.6$	12.5	23	1.84
11	20.8	$- 22.2$	$- 22.2$	12	21.8	1.82
12	20.9	$- 23.9$	$- 23.9$	11.2	20.5	1.83

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Mohammad Mahdi Taskhiri, Mohammad Khalaj-Amirhosseini. Inhomogeneous lens antenna design with fan-beam radiation pattern[J]. Chinese Optics Letters, 2016, 14(12): 121601.

Inhomogeneous lens antenna design with fan-beam radiation pattern Download： 1081次

Fig. 1. Typical structure of an inhomogeneous and asymmetric lens.

Fig. 2. Sample plane cross-section view of asymmetrical lens, whose thickness and aperture diameter are f and 2d. Each beam ray leaves from a point source at an angle α with respect to the z-axis and propagates through the lens.

Fig. 3. Trajectory of beam rays that started from the point source.

Fig. 4. (a) Refractive index profile and (b) electric field at 10 GHz.

Fig. 5. Stepped index lens antenna exited by a waveguide.

Fig. 6. Reflection loss of lens with WR90 antenna feeding.

Fig. 7. Electric field at a frequency of 10 GHz.

Fig. 8. Normalized radiation pattern of the lens antenna and source antenna at a frequency of 10 GHz. The directivity of the source antenna is 6.92 dBi and that of the lens antenna is 20 dBi.

Fig. 9. 3D radiation pattern loss of lens with WR90 antenna feeding at a frequency of 10 GHz.

Fig. 10. Normalization radiation pattern of lens on E and H planes.

Table1. 3D Lens Antenna’s Pattern Information

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Inhomogeneous lens antenna design with fan-beam radiation pattern Download： 1081次

Fig. 1. Typical structure of an inhomogeneous and asymmetric lens.

Fig. 2. Sample plane cross-section view of asymmetrical lens, whose thickness and aperture diameter are f and 2d. Each beam ray leaves from a point source at an angle α with respect to the z-axis and propagates through the lens.

Fig. 3. Trajectory of beam rays that started from the point source.

Fig. 4. (a) Refractive index profile and (b) electric field at 10 GHz.

Fig. 5. Stepped index lens antenna exited by a waveguide.

Fig. 6. Reflection loss of lens with WR90 antenna feeding.

Fig. 7. Electric field at a frequency of 10 GHz.

Fig. 8. Normalized radiation pattern of the lens antenna and source antenna at a frequency of 10 GHz. The directivity of the source antenna is 6.92 dBi and that of the lens antenna is 20 dBi.

Fig. 9. 3D radiation pattern loss of lens with WR90 antenna feeding at a frequency of 10 GHz.

Fig. 10. Normalization radiation pattern of lens on E and H planes.

Table1. 3D Lens Antenna’s Pattern Information

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