Design of Pattern Reconfigurable Microstrip Array Antenna in Terahertz Band

Fig. 5. H-plane orientation diagram of antenna unit fine tuning state. (a) H-plane orientation diagram of antenna unit with chemical potential of 0.1‒1.0 eV; (b) H-plane orientation diagram of antenna unit with chemical potential of 1.3‒4.0 eV

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Fig. 6. Structure diagram of 2×2 microstrip array antenna

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Fig. 7. 2×2 microstrip array antenna configuration. (a) State1; (b) state2; (c) state3; (d) state4; (e) state5; (f) state6; (g) state7; (h) state8; (i) state9; (j) state10

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Fig. 8. H-plane radiation direction diagram of 2×2 microstrip array antenna. (a) H-plane radiation direction diagram of state1-state5; (b) H-plane radiation direction diagram of state6-state10

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Table 1. Antenna unit size parameter
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Table 1. Antenna unit size parameter
Parameter L L₁ L₂ L₃ L₄ W₁ W₂ h₁ h₂ h₃
Size 35 15.5 15 4 0.5 33 1.5 0.95 3 0.017

Table 2. Parameters of the antenna unit in fine tuning state

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Table 2. Parameters of the antenna unit in fine tuning state

$μ_{c} / e V$	Main lobe direction /（°）	Main lobe magnitude /dBi	Angular width（3 dB）/（°）
0.1	24.0	3.91	66.0
0.2	23.0	4.17	66.2
0.3	22.0	3.62	66.6
0.5	21.0	4.90	66.8
0.7	20.0	5.34	67.3
0.8	19.0	5.54	67.6
1.0	18.0	5.91	68.0
1.3	17.0	6.38	68.7
1.6	16.0	6.75	69.3
1.9	15.0	7.04	69.9
2.4	14.0	7.39	70.8
3.0	13.0	7.64	71.6
4.0	12.0	7.83	72.8

Table 3. Performance parameters of microstrip array antenna

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Table 3. Performance parameters of microstrip array antenna

State	Main lobe direction /（°）	Main lobe magnitude /dBi	Angular width（3 dB）/（°）
State1	8.0	10.9	41.2
State2	12.0	11.1	41.4
State3	2.0	10.5	46.3
State4	13.0	11.7	44.6
State5	6.0	11.3	41.7
State6	6.0	11.3	42.1
State7	0.0	11.2	51.4
State8	4.0	11.9	42.1
State9	7.0	11.9	43.8
State10	4.0	12.5	42.5

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Ying Wang, Chunshu Li, Xiang Yan. Design of Pattern Reconfigurable Microstrip Array Antenna in Terahertz Band[J]. Laser & Optoelectronics Progress, 2024, 61(9): 0906002

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