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Phased Array Antenna Half-Power Beamwidth (HPBW) Calculator

Easily calculate and compute phased array antenna half-power beamwidth (hpbw) calculator with accurate equations, live formulas, and expert guidance.

Antenna frequency.

Physical aperture length in scan plane.

Angle steered away from broadside normal.

Calculated Result
1.46 °

Half-Power Beamwidth

Half-Power Beamwidth

1.46 °

Hpbw Deg

1.4644184082628264

Broadside Hpbw Deg

1.2682235433251792

Broadening Factor

1.1547005383792515

Wavelength M

0.0299792458

1.46 — °

Calculation Breakdown

  1. Applied FormulaEstimates 3-dB beam broadening and directivity degradation as a phased array electronically scans away from broadside.\theta_{3\text{dB}} \approx \frac{0.886 \lambda}{L \cos\theta_0} = \frac{50.7^\circ \lambda}{L \cos\theta_0}

Antenna Beamwidth HPBW Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.00.40.71.11.5Half-Power Beamwidth

What Is the Phased Array Antenna Half-Power Beamwidth (HPBW) Calculator?

This tool computes phased array antenna half-power beamwidth (hpbw) calculator with high precision arithmetic.

How Does the Phased Array Antenna Half-Power Beamwidth (HPBW) Calculator Work?

Estimates 3-dB beam broadening and directivity degradation as a phased array electronically scans away from broadside.

Phased Array Antenna Half-Power Beamwidth (HPBW) Calculator Formula & Variables

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

θ3dB≈0.886λLcos⁡θ0=50.7∘λLcos⁡θ0\theta_{3\text{dB}} \approx \frac{0.886 \lambda}{L \cos\theta_0} = \frac{50.7^\circ \lambda}{L \cos\theta_0}

Estimates 3-dB beam broadening and directivity degradation as a phased array electronically scans away from broadside.

How to Use the Phased Array Antenna Half-Power Beamwidth (HPBW) Calculator

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

Step-by-Step Example Calculation

Phased Array Antenna Half-Power Beamwidth (HPBW) Calculator Example

Input Values:

frequencyGhz:10
apertureLengthM:1.2
scanAngleDeg:30
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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