双频一体化超宽带探地雷达天线设计

doi:10.16180/j.cnki.issn1007-7820.2024.04.004

Abstract

Abstract:

In view of the disadvantages of time consuming and low efficiency caused by single frequency band of Ground Penetrating Radar (GPR) products, a dual-frequency integrated composite array antenna with center frequency of 400 MHz and 1 000 MHz and bandwidth of 200~1 500 MHz is designed and implemented, and is applied in Ultra-Wide Band (UWB)GPR system. The array antenna consists of three butterfly antennas with a center frequency of 400 MHz and six butterfly antennas with a center frequency of 1 000 MHz, and has the capability of simultaneous detection of dual frequency bands, which can realize the detection results of two different frequency bands in one survey line, overcome the problem of repeated detection of different frequencies of traditional GPR and enhance the practicability of GPR system. The proposed dual-frequency integrated GPR antenna has the characteristics of ultra-wideband, high gain and narrow beam. Its relative bandwidth is 153%, the maximum peak gain of 17.6 dBi is achieved in the whole bandwidth, and the narrowest half-power beam width is 7.6°. It provides a new antenna scheme for high resolution and high efficiency GPR applications.

Key words: ground penetrating radar, butterfly antenna, array antenna, ultra-wide band, high gain, dual frequency, high resolution, high efficiency

CLC Number:

TN82

LIN Xiangyu, ZENG Weihua. Design of Dual-Frequency Integrated Ultra-Wideband Ground Penetrating Radar Antenna[J].Electronic Science and Technology, 2024, 37(4): 25-29.

Figures/Tables 10

Figure 1.

Table 1.

Size parameters"

参数	数值/mm	参数	数值/mm
L₁	310.4	L₅	28.1
W₁	181.6	L₆	60.0
L₂	138.5	$L x 1$	463.1
W₂	73.0	$L y 1$	370.4
L₃	32.6	$L x 2$	205.9
W₃	2.6	$L y 2$	157.2
L₄	164.0	d₁	267.5
W₄	4.0	d₂	75.0

Table 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Table 2.

References 18

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	相对带宽 /%	峰值增益 /dBi	E面半功率波束宽度/(°)	前后比 /dB	阵列形式
文献[13]	20	19.3	约为30.0	约为38	4×4
文献[14]	3	22.3	约为25.0	约为32	1×8
文献[15]	7	14.4	约为25.0	约为15	1×8
本文	153	17.6	7.6	40	3+6

Design of Dual-Frequency Integrated Ultra-Wideband Ground Penetrating Radar Antenna

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