urlscan.io logo urlscan.io
SecurityTrails logo

www.calctown.com Open in urlscan Pro
52.4.221.11  Public Scan

Back to summary
URL: https://www.calctown.com/calculators/antenna-beamwidth
Submission: On September 18 via manual from IL — Scanned from DE

Form analysis 1 forms found in the DOM

POST ./antenna-beamwidth

<form method="post" action="./antenna-beamwidth" id="form1">
  <div class="aspNetHidden">
    <input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE"
      value="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">
  </div>
  <div class="aspNetHidden">
    <input type="hidden" name="__VIEWSTATEGENERATOR" id="__VIEWSTATEGENERATOR" value="10DAA136">
  </div>
  <div class="header">
    <div class="container">
      <div class="row">
        <div class="col-lg-6 col-md-6 col-sm-6">
          <div class="logo">
            <a id="hlnkLogo" href="../"><img id="Image1" src="../images/logo.png"></a>
          </div>
        </div>
        <div class="col-lg-6 col-md-6 col-sm-6 search-box">
          <div class="input-group">
            <input type="text" placeholder="Search for Calculator" class="form-control searchbox ui-autocomplete-input" autocomplete="off">
            <span class="input-group-btn"><a href="javascript:void(0)" class="btn btn-danger" id="btnSearch"><i class="fa fa-search"></i></a></span>
          </div>
        </div>
      </div>
    </div>
  </div>
  <nav class="nav-main navbar navbar-inverse">
    <div class="container">
      <div class="row">
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar">
            <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span>
          </button>
        </div>
        <div class="collapse navbar-collapse no-padding" id="navbar">
          <div id="menu">
            <ul class="menu nav navbar-nav ">
              <li>
                <a id="hlnkHome" href="../">Home</a>
              </li>
              <li>
                <a id="hlnkAbout" href="../about-us">About</a>
              </li>
              <li>
                <a id="hlnkContact" href="../contact-us">Contact</a>
              </li>
            </ul>
          </div>
        </div>
      </div>
    </div>
  </nav>
  <div class="container main">
    <div class="row">
      <div class="col-lg-12 hidden-sm hidden-xs no-padding">
        <div class="ads-top">
          <!-- Calc Town - Leaderboard -->
          <script type="text/javascript" src="https://www.googletagservices.com/tag/js/gpt.js">
            googletag.pubads().definePassback("/4250/EverythingRF/CalcTown", [728, 90]).setClickUrl("%%CLICK_URL_ESC%%").display();
          </script>
          <script src="https://securepubads.g.doubleclick.net/gpt/pubads_impl_2022091401.js?cb=31069670" id="gpt-impl-0.4982331115293488" nonce=""></script><iframe
            src="https://c2842c04042a3648071e6b75380006fa.safeframe.googlesyndication.com/safeframe/1-0-38/html/container.html" style="visibility: hidden; display: none;"></iframe>
          <div id="gpt_unit_/4250/EverythingRF/CalcTown_1" data-google-query-id="CKbUs-XBnvoCFV3Juwgdz90Psw">
            <div id="google_ads_iframe_/4250/EverythingRF/CalcTown_1__container__" style="border: 0pt none; display: inline-block; width: 728px; height: 90px;"><iframe frameborder="0"
                src="https://c2842c04042a3648071e6b75380006fa.safeframe.googlesyndication.com/safeframe/1-0-38/html/container.html" id="google_ads_iframe_/4250/EverythingRF/CalcTown_1" title="3rd party ad content" name="" scrolling="no"
                marginwidth="0" marginheight="0" width="728" height="90" data-is-safeframe="true" sandbox="allow-forms allow-popups allow-popups-to-escape-sandbox allow-same-origin allow-scripts allow-top-navigation-by-user-activation" role="region"
                aria-label="Advertisement" tabindex="0" data-google-container-id="1" style="border: 0px; vertical-align: bottom;" data-load-complete="true"></iframe></div>
          </div>
        </div>
      </div>
      <div class="clearfix">
      </div>
      <ol class="breadcrumb">
        <li><a href="/">Home</a></li>
        <li><a href="/all-calculators">All Calculators</a></li>
        <li><a href="/all-calculators/waveguide">Antenna and Waveguide Calculators</a></li>
        <li class="active">Antenna Beamwidth Calculator</li>
      </ol>
      <div class="col-lg-8 col-md-8 col-sm-12 border-right">
        <div class="content-left">
          <div class="about-text browse-text">
            <h1>Antenna Beamwidth Calculator</h1>
            <p></p>
            <p>This CalcTown calculator calculates the half power beam width (HPBW) of a parabolic antenna.</p>
            <p>The angular width of the beam radiated by high-gain antennas is measured by the half-power beam width (HPBW), which is the angular separation between the points on the antenna radiation pattern at which the power drops to one-half (-3
              dB) its maximum value. For parabolic antennas, the HPBW, ? is given by:</p>
            <p> </p>
            <p></p>
          </div>
          <div class="col-lg-12 no-padding margin-top15">
            <div class="col-lg-8 col-md-8 col-sm-8">
              <div class="well calculator-main">
                <div class="calculator">
                  <h4>Antenna Beamwidth Calculator</h4>
                  <div class="form-group"><label>Wavelength (λ)</label>
                    <div class="input-group"><input type="text" onkeydown="return AllowOnlyNumbers(event,'btnCalculateResult')" placeholder="Enter the wavelength" class="txtCalc form-control" aria-label="Text input with dropdown button" var="var1">
                      <div class="input-group-btn"><select class="ddlUnits btn btn-default dropdown-toggle" data-toggle="dropdown" var="var1">
                          <option>nm</option>
                          <option>um</option>
                          <option>Angstron</option>
                        </select></div>
                    </div>
                  </div>
                  <div class="form-group"><label>Diameter of the Antenna aperture (d)</label>
                    <div class="input-group"><input type="text" onkeydown="return AllowOnlyNumbers(event,'btnCalculateResult')" placeholder="Enter the diameter" class="txtCalc form-control" aria-label="Text input with dropdown button"
                        var="var2"><span class="input-group-addon">m</span></div>
                  </div>
                  <div class="form-group"><label>k</label><input type="text" onkeydown="return AllowOnlyNumbers(event,'btnCalculateResult')" placeholder="Enter the constant factor for the type of parabolic antenna (often =70)"
                      class="txtCalc form-control" var="var3"></div><button type="button" class="btn btn-danger btn-lg btn-block calc-btn" id="btnCalculateResult" resultdiv="result1">CALCULATE</button><button type="button"
                    class="btn btn-default btn-lg btn-block reset-btn" id="btnCalcReset">RESET</button>
                  <div class="well bg-info result-main" id="result1">
                    <h4>Result</h4>
                    <div class="result" id="resultDiv">
                      <div class="form-group"><label>Antenna Beamwidth (θ)</label>
                        <div class="input-group"><input type="text" class="form-control" readonly=""><span class="input-group-addon">radians</span></div>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
              <div class="cals-img cals-img-bott"><img src="https://cdn.calctown.com/antenna_beamwidth.PNG" alt="images"></div>
            </div>
            <div class="col-lg-4 col-md-4 col-sm-4">
              <div class="cals-img topimage"><img src="https://cdn.calctown.com/antenna_beamwidth_diagram.jpg" alt="images">
                <div class="click-img">Click here to view image</div>
              </div>
            </div>
          </div>
          <div class="clearfix"></div>
          <p>Where,</p>
          <p>λ = Wavelength</p>
          <p>d = Diameter of the antenna aperture</p>
          <p>k = Factor which varies slightly depending on the shape of the reflector and the feed illumination pattern.</p>
          <p>θ = Parabolic antenna beam-width</p>
          <p><br></p>
          <p>'k' is a factor which varies slightly depending on the shape of the reflector and the feed illumination pattern. For an ideal uniformly illuminated parabolic reflector and θ in degrees, k would be 57.3 (the number of degrees in a
            radian). For a "typical" parabolic antenna k is approximately 70.</p>
          <div class="ads-bottom hidden-xs">
            <div class="ads-text">Advertisement</div>
            <div id="baseboardAd"><!-- Calc Town - Baseboard Ad -->
              <script type="text/javascript" src="https://www.googletagservices.com/tag/js/gpt.js">
                googletag.pubads().definePassback("/4250/EverythingRF/CalcTown", [728, 90]).setClickUrl("%%CLICK_URL_ESC%%").display();
              </script>
              <div id="gpt_unit_/4250/EverythingRF/CalcTown_2" data-google-query-id="CLrgs-XBnvoCFeWZ_QcdKbIHtA">
                <div id="google_ads_iframe_/4250/EverythingRF/CalcTown_2__container__" style="border: 0pt none; width: 728px; height: 0px;"></div>
              </div>
            </div>
          </div>
        </div>
      </div>
      <div class="col-lg-4 col-md-4 col-sm-4">
        <div class="content-right">
          <div class="ads-right hidden-sm hidden-xs">
            <div class="ads-text">Advertisement</div>
            <div id="squareAd1"><!-- Calc Town - Square Ad -->
              <script type="text/javascript" src="https://www.googletagservices.com/tag/js/gpt.js">
                googletag.pubads().definePassback("/4250/EverythingRF/CalcTown", [300, 250]).setClickUrl("%%CLICK_URL_ESC%%").display();
              </script>
              <div id="gpt_unit_/4250/EverythingRF/CalcTown_3" data-google-query-id="CL7Ss-XBnvoCFTrnuwgdOGAKeA">
                <div id="google_ads_iframe_/4250/EverythingRF/CalcTown_3__container__" style="border: 0pt none; width: 300px; height: 0px;"></div>
              </div>
            </div>
          </div>
          <div class="ads-right hidden-sm hidden-xs">
            <div class="ads-text">Advertisement</div>
            <div id="squareAd2"><!-- Calc Town Square Ad 2 -->
              <script type="text/javascript" src="https://www.googletagservices.com/tag/js/gpt.js">
                googletag.pubads().definePassback("/4250/EverythingRF/CalcTown", [300, 250]).setClickUrl("%%CLICK_URL_ESC%%").display();
              </script>
              <div id="gpt_unit_/4250/EverythingRF/CalcTown_4" data-google-query-id="CJLKs-XBnvoCFWiL_Qcd2vQPdw">
                <div id="google_ads_iframe_/4250/EverythingRF/CalcTown_4__container__" style="border: 0pt none; display: inline-block; width: 300px; height: 250px;"><iframe frameborder="0"
                    src="https://c2842c04042a3648071e6b75380006fa.safeframe.googlesyndication.com/safeframe/1-0-38/html/container.html" id="google_ads_iframe_/4250/EverythingRF/CalcTown_4" title="3rd party ad content" name="" scrolling="no"
                    marginwidth="0" marginheight="0" width="300" height="250" data-is-safeframe="true" sandbox="allow-forms allow-popups allow-popups-to-escape-sandbox allow-same-origin allow-scripts allow-top-navigation-by-user-activation"
                    role="region" aria-label="Advertisement" tabindex="0" data-google-container-id="4" style="border: 0px; vertical-align: bottom;" data-load-complete="true"></iframe></div>
              </div>
            </div>
          </div>
        </div>
      </div>
      <input type="hidden" id="hfFunctions" value="var3*var1/(var2*Pow(10,9))"><input type="hidden" id="hfOutPuts" value="res1=Antenna Beamwidth (θ);;radians"><input type="hidden" id="hfShowInResults" value="res1=1"><input type="hidden"
        id="hfDefaultUnits" value="var1=nm|var2=m|var3=0"><input type="hidden" id="hfUnitsFormulas" value="var1#nm;;um=var1*1000;;Angstron=var1/10|var2#m|var3#0">
    </div>
  </div>
  <div class="modal fade" id="MoreDataPopups">
    <div class="modal-dialog">
      <div class="modal-content">
        <div class="modal-header">
          <button type="button" class="close" data-dismiss="modal">
            <span aria-hidden="true">×</span><span class="sr-only">Close</span></button>
          <div id="modalTitle"> Calculator Image </div>
        </div>
        <div id="modalBody" class="modal-body">
        </div>
      </div>
      <!-- /.modal-content -->
    </div>
    <!-- /.modal-dialog -->
  </div>
  <span id="pageName" class="hidden">calculator</span> <span id="dotsDepth" class="hidden"> ../</span>
  <footer class="footer">
    <div class="our-network-footer">
      <div class="container">
        <h3> Our Network</h3>
        <ul class="list-unstyled">
          <li class="col-lg-2 col-md-2 col-sm-3"><a href="https://www.everythingrf.com?utm_source=calctown" target="_blank" class="btn rf-btn btn-block" rel="nofollow">EverythingRF</a></li>
          <li class="col-lg-2 col-md-2 col-sm-3"><a href="https://www.gophotonics.com?utm_source=calctown" target="_blank" class="btn btn-danger btn-block">GoPhotonics</a></li>
          <li class="col-lg-2 col-md-2 col-sm-3"><a href="http://www.buildbot.io?utm_source=calctown" target="_blank" class="btn  specpick-btn btn-block">BuildBot</a></li>
          <li class="col-lg-2 col-md-2 col-sm-3"><a href="https://www.pcbdirectory.com?utm_source=calctown" target="_blank" class="btn btn-danger btn-block">PCB Directory</a></li>
          <li class="col-lg-2 col-md-2 col-sm-3"><a href="https://www.emc-directory.com?utm_source=calctown" target="_blank" class="btn btn-warning btn-block">EMC Directory</a></li>
          <li class="col-lg-2 col-md-2 col-sm-3"><a href="https://www.3d.directory?utm_source=calctown" target="_blank" class="btn  btn-danger btn-block">3D Directory</a></li>
          <div class="clearfix">
          </div>
        </ul>
      </div>
    </div>
    <div class="container">
      <div class="row">
        <div class="col-lg-12 col-md-12 col-sm-12 footer-content">
          <ul class="inline-block">
            <li class="">
              <a id="hlnkPrivacy" href="../privacy">Privacy</a>
            </li> | <li class="">
              <a id="hlnkResources" href="../resources">Resources</a>
            </li> |
          </ul>
          <span class="copyright inline-block">© 2015 CalcTown </span>
        </div>
      </div>
    </div>
  </footer>
  <span id="dotsDepth" class="hidden"></span>
</form>

Text Content

Toggle navigation
 * Home
 * About
 * Contact

 1. Home
 2. All Calculators
 3. Antenna and Waveguide Calculators
 4. Antenna Beamwidth Calculator


ANTENNA BEAMWIDTH CALCULATOR



This CalcTown calculator calculates the half power beam width (HPBW) of a
parabolic antenna.

The angular width of the beam radiated by high-gain antennas is measured by the
half-power beam width (HPBW), which is the angular separation between the points
on the antenna radiation pattern at which the power drops to one-half (-3 dB)
its maximum value. For parabolic antennas, the HPBW, ? is given by:





ANTENNA BEAMWIDTH CALCULATOR

Wavelength (λ)
nmumAngstron
Diameter of the Antenna aperture (d)
m
k
CALCULATERESET

RESULT

Antenna Beamwidth (θ)
radians

Click here to view image


Where,

λ = Wavelength

d = Diameter of the antenna aperture

k = Factor which varies slightly depending on the shape of the reflector and the
feed illumination pattern.

θ = Parabolic antenna beam-width




'k' is a factor which varies slightly depending on the shape of the reflector
and the feed illumination pattern. For an ideal uniformly illuminated parabolic
reflector and θ in degrees, k would be 57.3 (the number of degrees in a radian).
For a "typical" parabolic antenna k is approximately 70.

Advertisement

Advertisement

Advertisement

×Close
Calculator Image

calculator ../


OUR NETWORK

 * EverythingRF
 * GoPhotonics
 * BuildBot
 * PCB Directory
 * EMC Directory
 * 3D Directory
   

 * Privacy
   |
 * Resources
   |

© 2015 CalcTown