NEWS

Maintenance of satellite parabolic antenna includes special inspection of WR-15 flange sealing surface (aluminum chips > 50μm will create VSWR > 2.1), substitution of the polytetrafluoroethylene support ring with a torque wrench of 35N·m (the dielectric constant must be maintained at 2.1±0.05), and helium leak detection according to MIL-STD-188-164A standard (threshold 5×10⁻⁸ atm·cc/sec). After level […]

Horns give 22dBi gain at 12GHz with ±15cm installation tolerance, while parabolic dishes are capable of 38dBi gain but require surface accuracy <λ/16. Parabolics demand ≥2D²/λ far-field test distance, while horns have ±3λ axial deviation tolerances. Phase drift: 0.15°C (horn) compared to 0.03°C (parabolic with CFRP). Principle Comparison Last year when we were debugging AsiaSat

The waveguide slot array improves the radar beam pointing accuracy by 15 times through ±0.25° tilt tolerance control (military AN/SPY-6 standard) and gradient arrangement algorithm, combined with 0.1mm precision groove engraving by diamond turning tool and 200nm gold-nickel plating process, and achieves ±2° phase consistency in the 94GHz frequency band, power tolerance of 50kW pulse,

The phased array dynamically adjusts the transmission phase of each unit through a digitally controlled phase shifter. In the Ku band (12-18GHz), a 6-bit phase shifter is used to achieve a step accuracy of 5.6°. Combined with a real-time calibration algorithm, it can complete 0.1° precise beam steering within 200ns, meeting satellite communication requirements. Principle

The lens horn controls the 94GHz wavefront distortion to <λ/50 through refraction of the PTFE dielectric layer. Combined with the optimization of the Brewster angle of 68.5°±0.3° and ultra-precision machining of Ra<0.8μm, the mode purity is increased to 98.2%. The actual measurement reduces the EIRP fluctuation of the W-band satellite antenna to ±0.35dB (ITU-R S.1327

The logarithmic periodic antenna expands the working bandwidth by 37% through the geometric arrangement of τ=0.82 (the traditional solution τ=0.7), and achieves VSWR<1.5:1 at 8-40GHz. The gradient slot line (radiation efficiency increased from 68% to 82%) and dual dielectric substrate (Ku-band Rogers 5880, Ka-band aluminum nitride ceramic) are used to suppress high-frequency leakage, and the

The blade-shaped antenna adopts a continuous gradient curvature design (radius of curvature > λ/10), and the surface roughness Ra is controlled at 0.05μm through chemical nickel plating process. Combined with the MIL-STD-461G multi-point grounding scheme (grounding impedance < 50mΩ), the surface current density in the 28GHz frequency band is 23 times lower than that of

Satellite frequency bands enable reliable global communications, reduce latency and support high-speed data transmission. They enhance Internet access in remote areas, improve navigation, and ensure real-time connectivity in key industries such as finance, transportation and defense. Global Data Transmission When transmitting data in tropical areas, the attenuation rate of Ka-band signals can reach more than