ASLبشمهندس عسل

RF chain

RF Band & Carrier Planner

Compare microwave bands, services, wavelength and weather sensitivity.

Given / choose the units

Diagrams update as you edit. Run Calculate to refresh numerical results.

Enter the design inputs, then calculate to inspect the results.

Swipe the diagram sideways to see the full view. With a keyboard, focus the diagram and use the arrow keys.

Understand the system

Letter bands and service allocations

Approximate teaching ranges are L 1–2 GHz, S 2–4, C 4–8, X 8–12, Ku 12–18, K 18–26.5 and Ka 26.5–40 GHz. Ippolito rounds the K/Ka boundary to 27 GHz. Letter bands are broad labels: an actual service uses allocated subranges that depend on region and direction.

Source: week 3/reference.pdf · PDF page 33

Common mistakes

  • A letter band is not a precise licensed service allocation.
  • Do not teach that Ku waves travel faster than C waves.
  • Convert GHz to Hz before using c/f.
Formula reference and symbol definitions

Wave relationship

λ=c/f\lambda=c/f

λ: m; c: m/s; f: Hz

Vacuum propagation.

Example: At 6 GHz, λ = 3 × 10⁸ / (6 × 10⁹) = 0.050 m.

Open related tool →

Course wavelength shortcut

λm≈0.3/fGHz\lambda_m\approx0.3/f_{GHz}

λ: m; f: GHz

c = 3×10⁸ m/s.

Example: At 12 GHz, λ ≈ 0.3/12 = 0.025 m = 2.5 cm.

Open related tool →

Continue the signal path

Antenna Gain & Aperture Calculator →RF Path, PFD and Received Power Calculator →Doppler and Propagation Delay Tool →

Design guide

Use the result with engineering context

Technical content reviewed

When this tool is useful

  • Calculating l, s, c, x, ku, k and ka bands with engineering models
  • Calculating fss, mss and bss with engineering models
  • Calculating wavelength with engineering models

What the result includes

  • Compare microwave bands, services, wavelength and weather sensitivity.
  • Explanations, assumptions and links to related satellite calculators

What the model does not guarantee

  • Analytical engineering models do not replace measurements or a mission-specific design review.
  • Spectrum permissions, launch operations and real satellite tracking are outside these calculators.

Worked approach

L, S, C, X, Ku, K and Ka bands

L supports mobile and navigation services. S includes MSS and space research examples. C is associated with FSS; X includes military and space applications. Ku serves satellite television, BSS and FSS. Ka supports broadband FSS/BSS. C-band links generally tolerate rain better than Ku/Ka; compare equal availability targets rather than assuming one band always wins.

Common decisions

Questions engineers ask

Which topics does RF Band & Carrier Planner cover?

L, S, C, X, Ku, K and Ka bands; FSS, MSS and BSS; Wavelength; Rain sensitivity.

How should I check my work in RF Band & Carrier Planner?

Read the stated assumptions and source references, check units and independently repeat a worked example before relying on the result.

Does RF Band & Carrier Planner operate real satellite equipment?

No. This is a browser-based educational resource. It does not transmit RF signals, command spacecraft or certify a working link.

Related build evidence

Related embedded-system engineering

Aqua Sync is a separate connected-device project, not evidence of a satellite deployment.

See the project

Apply it to real hardware

Discuss an engineering prototype

Share the required behavior, interfaces and how you plan to test the result.

Discuss the system