Necessary Bandwidth Description

0710-EX-PL-2014 Text Documents

ELTA North America

2014-11-03ELS_155336

ELTA North America Request for FCC Experimental License

Form 442 File Number: 0710-EX-PL-2014
Form 442 Confirmation Number: EL622900

03 November 2014

Necessary Bandwidth Calculation

The necessary bandwidth was determined using the equation in Annex J of the NTIA Manual1
for FM-pulsed radars (see Equation 1).

1.79
𝐵𝑛 = 𝐵(−20 𝑑𝐵) = + 2𝐵𝑐 (1)
√𝑡𝑟 ∙𝑡

where

Bn = necessary bandwidth, MHz
tr = pulse rise time, s
t = pulse width, s
Bc = frequency deviation (chirp) bandwidth, MHz

The ELTA NA MARS-K emission characteristics are given in Table 1. Applying these
parameters to Equation 1, results in a maximum necessary bandwidth of 66.6 MHz.

Table 1 Emission Characteristics
Pulse width 0.1 s
Pulse rise/fall time 10 ns
Maximum frequency deviation 5 MHz

1
Manual of Regulations and Procedures for Federal Radio Frequency Management, Washington, DC: US
Department of Commerce, National Telecommunications and Information Administration, 2008 (revision May
2011).

Document Created: 2014-11-03 20:20:48
Document Modified: 2014-11-03 20:20:48

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