Design of common aperture multi-beam shaped reflector antenna for satellite communications

Table 1. Design parameters for antenna
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Table 1. Design parameters for antenna
D_m/m F/m D_sx/m f/m feed1 position/m feed2 position/m feed3 position/m SR eccentricity
1.1 0.88 0.278 0.15 (−0.13,0,0.076) (0.035,0.055,0.92) (0.045,−0.043,0.84) 0.25

Table 2. Task metrics
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Table 2. Task metrics
item EOC gain/dBi XPD/dB
EOC gain: edge-of-coverage gain; XPD: cross-polarization discrimination
shaped beam 1 27.5 29
shaped beam 2 28.0 25
spot beam 34.0 30

Table 3. Date of shaped beam

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Table 3. Date of shaped beam

shaped data	transmitted form	frequency/GHz	linear polarization	EOC gain/dBi	XPD/dB	EOC gain/dBi^[10]
H: horizontal ; V: vertical ; TX: transmit ; RX: receive
shaped beam 2	TX	12.50	H	28.2	25	27.3
shaped beam 2	RX	14.25	V	28.0	25	27.1
shaped beam 1	TX	12.50	V	28.0	29	26.1
shaped beam 1	RX	14.25	H	27.7	29	26.1

Table 4. GAP of shaped beam
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Table 4. GAP of shaped beam
shaped data transmitted form D_λ GAP
shaped beam 2 TX 45.83 6706
RX 52.25 6404
shaped beam 1 TX 45.83 9149
RX 52.25 8538

Table 5. Gain of spot beam
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Table 5. Gain of spot beam
spot beam transmitted form gain/dBi XPD/dB
#1 TX 34.58 30
RX 34.78 30
#2 TX 35.04 32
RX 35.27 31
#3 TX 35.38 33
RX 35.77 33

Table 6. Gain of spot beam

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Table 6. Gain of spot beam

$ \Delta x/\mathrm{m}\mathrm{m} $	$ \Delta y/\mathrm{m}\mathrm{m} $	$ \theta$/(°)	gain/dBi	$ \Delta x/\mathrm{m}\mathrm{m} $	$ \Delta y/\mathrm{m}\mathrm{m} $	$ \theta $/(°)	gain/dBi
40	0	−2.1	35.74	0	−40	−2.2	35.35
80	0	−4.3	35.67	0	−80	−4.3	35.27
120	0	−6.4	35.32	0	−120	−6.5	35.04
140	0	−7.4	35.07	0	−140	−7.6	34.80

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Xiaofeng Yang, Chengkun Yang, Qinggong Guo. Design of common aperture multi-beam shaped reflector antenna for satellite communications[J]. High Power Laser and Particle Beams, 2024, 36(9): 093004

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