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Phased Array Antenna Beamwidth & Grating Lobe Calculator

Easily calculate and compute phased array antenna beamwidth & grating lobe calculator with accurate equations, live formulas, and expert guidance.

Number of radiative elements in 1D uniform array.

Inter-element spacing normalized by wavelength (typically 0.50).

Target main lobe direction off boresight.

Calculated Result
7.3 °

Beamwidth (HPBW)

Beamwidth (HPBW)

7.3 °

Half Power Beamwidth Hpbw Deg

7.3

Inter Element Phase Shift Degrees

-90

Grating Lobe Status

CLEAN PATTERN (No Grating Lobes)

Maximum Grating Free Scan Angle Deg

90

7.3 — °

Calculation Breakdown

  1. Applied FormulaCalculates progressive phase shifts, scanned half-power beamwidth, and spatial aliasing grating lobe limits for active electronically scanned arrays (AESA).\frac{d}{\lambda} \le \frac{1}{1 + |\sin\theta_{max}|} \quad (\text{Grating Lobe Free Condition})

Phased Array Beamforming Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.01.83.65.57.3Beamwidth (HPBW)

What Is the Phased Array Antenna Beamwidth & Grating Lobe Calculator?

This tool computes phased array antenna beamwidth & grating lobe calculator with high precision arithmetic.

How Does the Phased Array Antenna Beamwidth & Grating Lobe Calculator Work?

Calculates progressive phase shifts, scanned half-power beamwidth, and spatial aliasing grating lobe limits for active electronically scanned arrays (AESA).

Phased Array Antenna Beamwidth & Grating Lobe Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

dλ≤11+∣sin⁡θmax∣(Grating Lobe Free Condition)\frac{d}{\lambda} \le \frac{1}{1 + |\sin\theta_{max}|} \quad (\text{Grating Lobe Free Condition})

Calculates progressive phase shifts, scanned half-power beamwidth, and spatial aliasing grating lobe limits for active electronically scanned arrays (AESA).

How to Use the Phased Array Antenna Beamwidth & Grating Lobe Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Phased Array Antenna Beamwidth & Grating Lobe Calculator Example

Input Values:

elementCountN:16
elementSpacingOverLambda:0.50
scanAngleTheta0Deg:30.0
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required °.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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