The ZD03820-0.5B Planar Spiral Antenna, developed by ZDTECH, is a high-performance communication device covering a wide frequency range of 380MHz~2000MHz. It adopts a right-handed circular polarization design, which can effectively reduce polarization loss during signal transmission and is suitable for signal transmission and reception in multiple scenarios such as the Internet of Things, industrial communications, and wireless monitoring.
In terms of core performance, the antenna performs excellently: the absolute gain in the 380MHz~500MHz frequency band is better than -4dB with an actual gain ≥-0.5dB, the absolute gain in the 500MHz~2000MHz frequency band is better than -2dB, and the beam width in the entire frequency band is ≥90°, enabling wide-range signal coverage; the standing wave ratio is ≤2.5, which reduces signal reflection to improve transmission efficiency, and the back lobe is ≤-12dB, which can effectively suppress reverse interference and ensure signal purity.
In terms of physical and environmental adaptability, the antenna has a reference dimension of ≤360mm×360mm×250mm (excluding socket and installation surface) and a weight of ≤2500g, with a compact structure for easy installation; the cavity is made of Alufer material, which combines strength and lightweight advantages, and is equipped with an SMA-K type stainless steel connector, featuring strong corrosion resistance and stable connection. Meanwhile, its operating temperature range is -40℃~+55℃ and storage temperature range is -50℃~+65℃, allowing stable operation in harsh environments such as high and low temperatures. The appearance is coated with grayish-blue (GY09) pigment, which combines aging resistance and visual coordination.
Technical Index
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Frequency Range
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380MHz~2000MHz
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Gain And Beam Width
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≥-0.5dB
380~500MHz: ≥90° (absolute gain better than the beam width of-4dB)
500-2000MHz: Beam width of ≥90° (absolute gain better than-2dB)
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Standing Wave
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≤2.5
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Joggle
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SMA-K type (stainless steel)
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Back Lobe
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≤-12dB
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Polarization Method
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right-handed circular polarization
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Reference Dimension
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≤360mm×360mm×250mm (excluding socket and installation surface)
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Weight
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≤2500g
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Pigment
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Grayish-blue GY09
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Antenna Cavity Material
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Alufer
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Working Temperature
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-40℃~+55℃
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Storage Temperature
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-50℃~+65℃
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Beam Width
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Operating frequency (MHz)
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3dB beam width（°）
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380
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80
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800
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74
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1000
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64
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1500
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62
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1800
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80
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2000
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80
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