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Alignsat TE21- Self-tracking Feed
The product uses circular polarization from the tracking feed design principle, implement "strong coupling" to the circular waveguide tracking TE 21 mode.
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Description
Description
The product uses circular polarization from the tracking feed design principle, implement "strong coupling" to the circular waveguide tracking TE 21 mode. “Weak coupling” of TE11 mode and other modes of communication, and the coupling of the two quadrature signal realizing circular polarization. The results show that the feed in the corresponding frequency range has excellent differential radiation and matching characteristics, Sum difference isolation (without filter conditions) is better than 40dB, excellent performance with wide bandwidth and high performance.
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Mechanical Specifications | ||
Feed | Frequency | C Band or Ku Band |
VSWR | ≤1.1 | |
The main mode pair of the subreflector edge illumination level | ≤-15dB | |
Main mode cross polarization level | ≤-33dB | |
Double-mode part | TE21 mold coupling degree | ≥-0.5dB |
Mold isolation | ≥40dB | |
TE11 mold transmission loss | ≤0.2dB | |
sum mold VSWR | ≤1.3 | |
Differential mold axis ratio | ≤2dB | |
difference beam null depth | ≤-40dB |