2-18GHz Wideband Low-VSWR Circularly Polarized Planar Spiral Antenna
ZD-PHA-2/18G-ZD20180-M
The planar spiral antenna Model ZD20180-M is a high-performance communication device covering an ultra-wide frequency range of 2GHz~18GHz. It adopts a circular polarization design (axial ratio ≤3), ensuring stable signal transmission and strong anti-interference capability. It delivers excellent gain performance across different frequency bands: gain ≥-4dBi in the 2GHz-4GHz band and ≥1dBi in the 4GHz-18GHz band. Meanwhile, the deviation between the beam direction and the axis is ≤5°, ensuring high signal pointing accuracy; the 3dB beamwidth ranges from 60° to 130° in the horizontal direction and exceeds 50° in the vertical direction, providing a wide coverage to meet signal reception needs in various scenarios.
Equipped with a standard SMA connector, the antenna has reserved mounting holes at the rear for quick assembly. With a VSWR (Voltage Standing Wave Ratio) of ≤2.5, it effectively reduces signal reflection loss. Its reference dimension is ≤70mm×77mm×60mm (excluding the connector), featuring a compact size that fits scenarios with limited space. Moreover, it has excellent temperature resistance, with an operating temperature range of -55℃~+75℃ and a storage temperature range of -65℃~+85℃, enabling stable operation in harsh environments. It is widely applicable in fields such as communication equipment, radar systems, and testing instruments.
Equipped with a standard SMA connector, the antenna has reserved mounting holes at the rear for quick assembly. With a VSWR (Voltage Standing Wave Ratio) of ≤2.5, it effectively reduces signal reflection loss. Its reference dimension is ≤70mm×77mm×60mm (excluding the connector), featuring a compact size that fits scenarios with limited space. Moreover, it has excellent temperature resistance, with an operating temperature range of -55℃~+75℃ and a storage temperature range of -65℃~+85℃, enabling stable operation in harsh environments. It is widely applicable in fields such as communication equipment, radar systems, and testing instruments.
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In the fields of modern communication, radar detection, and electronic testing, antennas with wide bandwidth and high stability are core components ensuring signal transmission quality. The ZD20180-M 2GHz~18GHz Planar Spiral Antenna is a high-performance solution tailored for such high-demand scenarios. As a professional-grade Wideband Circularly Polarized Antenna, it covers an ultra-wide operating frequency range from 2GHz to 18GHz, which can seamlessly adapt to multi-band signal requirements from shortwave to microwave. There is no need to replace antennas frequently, greatly improving equipment efficiency; the circular polarization design (axial ratio ≤3) of this Wideband Circularly Polarized Antenna can effectively resist signal interference in complex electromagnetic environments, maintaining stable signal connections even in high-interference scenarios such as satellite communication and UAV data transmission, solving the problem of weak anti-interference capability of traditional linearly polarized antennas.
At the same time, this antenna has the core advantage of Low-VSWR Antenna (VSWR ≤2.5), which can minimize signal reflection loss, ensure efficient signal transmission from the transmitting end to the receiving end, and avoid equipment performance degradation caused by signal attenuation—this feature makes the Low-VSWR Antenna perform exceptionally well in radar systems and electronic test instruments that have extremely high requirements for signal integrity. As a 2GHz~18GHz Planar Spiral Antenna, its gain performance is also impressive: it has a gain of ≥-4dBi in the 2GHz-4GHz band and ≥1dBi in the 4GHz-18GHz band. Combined with a beam axis deviation of ≤5° and a 3dB beamwidth of 60°~130° (horizontal) and ＞50° (vertical), it can not only ensure accurate signal pointing but also achieve wide-range signal coverage, perfectly adapting to scenarios such as communication base station signal relay and outdoor emergency communication.
In addition, this 2GHz~18GHz Planar Spiral Antenna adopts a compact design (reference dimension ≤70mm×77mm×60mm, excluding the connector), with reserved mounting holes at the rear end. Equipped with a standard SMA connector, it is easy to install and compatible with most equipment interfaces; it also has excellent temperature resistance, with an operating temperature range of -55℃~+75℃ and a storage temperature range of -65℃~+85℃. Even in harsh environments such as high and low temperatures, the Wideband Circularly Polarized Antenna can still operate stably, widely used in military industry, aerospace, outdoor communication and other fields. The low signal loss characteristic of the Low-VSWR Antenna further provides reliable signal support for these high-demand scenarios, making it a preferred antenna accessory for equipment in multiple fields.
FrequencyRange | 2GHz~18GHz | |
VSWR | ≤2.5(Type) | |
Gain | ≥-4dBi（2GHz-4GHz） ≥1dBi（4GHz-18GHz） | |
Deviation Between Beam Direction And AxisDirection | ≤5 ° | |
Connector | SMA | |
Axial ratio | ≤3 | |
Polarization | circular polarization | |
InstallationMethod | reserved installation holes at the rear end of the antenna | |
3dB BeamWidth | H:60°~130° E:＞50° | |
Reference Dimension | ≤70mm*77mm*60mm (excluding socket) | |
Working Temperature | -55℃~+75℃ | |
StorageTemperature | -65℃~+85℃ |
