アンテナ技研 List of Products and Services

We would like to introduce a case where we developed an "antenna for asteroid exploration rovers." As background, there was a request for the development of an antenna to be used for communication between the "asteroid exploration rover" and the Hayabusa2 spacecraft. As a solution, we selected substrate materials that meet environmental conditions and aimed to minimize thickness, reduce profile, and lighten weight, thereby mitigating the impact of vibrations during launch and enabling placement in the gaps between solar panels. [Development Overview (Partial)] ■Challenges - Shape and material that meet the specific conditions of the rover - Resistance to space environment ■Results - Coverage of -5 dBi or more in frequency characteristics and polarization at ±90 degrees or more *For more details, please refer to the related links or feel free to contact us.

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We would like to introduce a case where we developed an "ultra-small satellite-mounted antenna." We received a request to develop an ultra-small antenna for use in a 6U-sized CubeSat, with the background of wanting to further miniaturize the X-band antenna developed for the small satellites "Hodoyoshi" and "Procyon" to be mounted on a 6U-sized ultra-small satellite. As a solution, for the X-band antenna, we innovated the shape and structure of the antenna itself to control directivity and gain, while for the Ka-band antenna, we incorporated material selection and structural innovations to achieve both strength and electrical performance. [Development Overview (Partial)] ■ Challenges - Directivity tailored to communication forms - Miniaturization and weight reduction ■ Achievements - The X-band antenna was reduced to under 15g, and the Ka-band antenna to under 35g - The gain of the Ka-band antenna exceeded the target, achieving 16.3dBi *For more details, please refer to the related links or feel free to contact us.

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We would like to introduce a case study of the development of our "Portable ARC." As background, radars mounted on satellites and aircraft require adjustments using ARC, and since satellites and aircraft do not remain in a fixed location, there was a demand for a portable ARC that allows for easy movement and high flexibility in radar adjustments. As a solution, we made it possible to transport the system using a small truck by structuring it into separate components: antenna unit, electronic equipment unit, control unit, and digital receiver unit. [Development Overview (Partial)] ■ Challenges - Transportable by a small truck - Easy assembly and disassembly by a few people ■ Results - The number of people required for assembly and disassembly of the device is four, with an assembly time of approximately 60 minutes and a disassembly time of approximately 40 minutes. *For more details, please refer to the related links or feel free to contact us.

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We would like to introduce a case where we developed a "multi-band antenna." In the frequency range of 300 MHz to 6 GHz, we divided it into 5 bands as needed, achieving vertical polarization with omnidirectionality in the horizontal plane and a VSWR of less than 3.5 for each band. As a solution, we used a shortened dipole antenna element for the low-frequency band and a biconical antenna element for the high-frequency band, allowing us to share a single input terminal through a central feeding hybrid configuration. [Development Overview (Partial)] ■ Challenges - Shared a single input terminal - Wideband elements ■ Achievements - The antenna, with a cover, achieved a diameter of φ60mm × 300mm and a weight of less than 1 kg. *For more details, please refer to the related links or feel free to contact us.

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We would like to introduce a case where we developed a "small satellite-mounted antenna." We were consulted on the development of a small, lightweight medium-gain antenna and a low-elevation directional antenna for use in the X-band. The medium-gain antenna, which is used for high-speed data communication, requires high gain and wideband characteristics. As a solution, the medium-gain antenna was designed as a 4-element patch array to achieve miniaturization and lightweight. The low-elevation antenna was constructed with a helical antenna structure to suppress zenith gain and shape the beam to peak in the 30° elevation direction. [Development Overview (Partial)] ■ Consultation Details - Development of a small, lightweight medium-gain antenna and a low-elevation directional antenna ■ Challenges - Durability against vibration, shock, temperature, and radiation - Miniaturization and lightweight design *For more details, please refer to the related links or feel free to contact us.

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