NEC DTU-70 - Output Filter Section

GWP-G22996
3 - 5
3-4 Output Filter Section
This section consists of the harmonic filter and low pass filter (optional) for suppressing
the spurious of the outputs of the power amplifier section. Also this harmonic filter
consisted of λ/4 short circuit is used to protecting against lighting.
Table 3-3 Attenuation characteristic of filters
Filter Size
Attenuation[dB]
2fc
※
940-1000MHz
1000-1724MHz
NAX-77D
62
56
NAX-39D
56
50
※ The attenuation is specified at the band of 2fc±8MHz.