GMR of Two-Layer ACSR Calculator Two-Layer ACSR GMR Calculator Calculate the effective Geometric Mean Radius (GMR) for a two-layer ACSR conductor bundle. For a single conductor, \(GMR = 0.7788\,r\). For a bundle with one inner conductor and \(n\) outer strands, \[ GMR = \Bigl(0.7788\,r\,R^n\Bigr)^{\frac{1}{n+1}} \] * Enter the conductor radius (m), the number of outer […]
Read MoreGMR of Bundled Conductors Calculator Bundled Conductors GMR Calculator Calculate the effective Geometric Mean Radius (GMR) for bundled conductors. For a single conductor, \(GMR = 0.7788\,r\). For an \(N\)-conductor bundle (with \(N>1\)) arranged in a line with equal spacing \(d\), \[ GMR = \Bigl(0.7788\,r\,d^{(N-1)}\Bigr)^{\frac{1}{N}} \] * Enter the conductor radius (m) and, for bundles, the […]
Read MoreWhip Antenna Calculator Whip Antenna Calculator Calculate the quarter-wave whip antenna length using: \( L = \frac{75}{f} \) where \(f\) is in MHz. * Enter the operating frequency (MHz). Step 1: Enter Frequency Frequency (MHz): Example: 900 MHz Calculate Whip Antenna Length Calculated Whip Antenna Length Recalculate Derived Formula: \( L = \frac{75}{f} \) with […]
Read MoreMicrostrip Patch Antenna Calculator Microstrip Patch Antenna Calculator Design a rectangular microstrip patch antenna using: \( W = \frac{c}{2f}\sqrt{\frac{2}{\varepsilon_r+1}} \), \( \varepsilon_{\mathrm{eff}} = \frac{\varepsilon_r+1}{2} + \frac{\varepsilon_r-1}{2}\left(1+12\frac{h}{W}\right)^{-1/2} \), \( \Delta L = 0.412\,h\,\frac{(\varepsilon_{\mathrm{eff}}+0.3)(\frac{W}{h}+0.264)}{(\varepsilon_{\mathrm{eff}}-0.258)(\frac{W}{h}+0.8)} \), \( L = \frac{c}{2f\sqrt{\varepsilon_{\mathrm{eff}}}} – 2\Delta L \) where \( f \) is in GHz and \( h \) is in mm. […]
Read MoreFriis Antennas Path Loss Calculator Friis Path Loss Calculator Calculate the free-space path loss using the Friis equation: \[ PL_{\text{dB}} = 20 \log_{10}\!\Bigl(\frac{4\pi R\,f}{0.3}\Bigr) \] where \(R\) is in meters and \(f\) is in GHz. * Enter the distance (m) and frequency (GHz). Step 1: Enter Parameters Distance, \(R\) (m): Example: 100 m Frequency, \(f\) […]
Read MoreEffective Antenna Aperture Calculator Effective Antenna Aperture Calculator Calculate the effective aperture using: \[ A_e = \frac{\lambda^2\,G}{4\pi} \] with \(\lambda=\frac{0.3}{f}\) (m) for frequency \(f\) in GHz and \(G=10^{\frac{G_{\rm dB}}{10}}\). * Enter the operating frequency (GHz) and antenna gain (dB). Step 1: Enter Parameters Operating Frequency, \(f\) (GHz): Example: 10 GHz Antenna Gain, (dB): Example: 20 […]
Read MoreDipole Antenna Calculator Dipole Antenna Calculator Calculate the total length of a half‑wave dipole antenna using the 468/f rule: \[ L_{\text{ft}} = \frac{468}{f \,(\text{MHz})} \] and convert it to meters. * Enter the operating frequency (MHz). Step 1: Enter Frequency Frequency \(f\) (MHz): Example: 14 MHz (for the 20m band) Calculate Dipole Length Dipole Antenna […]
Read MoreAperture Antennas Electric Field Calculator Aperture Antenna Electric Field Calculator Calculate the electric field at the aperture using: \[ E = \sqrt{\frac{2\,\eta_0\,P}{A}} \] where \(\eta_0\approx377\,\Omega\), \(P\) is the radiated power (W), and \(A\) is the aperture area (m²). * Enter the radiated power and the aperture area. Step 1: Enter Parameters Radiated Power, \(P\) (W): […]
Read MoreAntenna Gain Calculator Calculate the antenna gain using: \[ G = \eta \left(\frac{\pi D}{\lambda}\right)^2,\quad \lambda=\frac{0.3}{f} \] where \(f\) is in GHz. * Enter the efficiency (0 to 1), antenna aperture \(D\) (m), and operating frequency \(f\) (GHz). Step 1: Enter Parameters Efficiency, \( \eta \): Example: 0.6 (i.e. 60%) Antenna Aperture, \( D \) (m): […]
Read MoreAntenna Array Calculator This calculator computes the main beam direction and an approximate half‑power beamwidth (HPBW) for a uniform linear array. For a linear array with \(N\) elements, element spacing \(d\) (in wavelengths), and a progressive phase shift \(\beta\) (in degrees), the main beam is steered according to \[ k\,d\cos\theta_0+\beta_{\rm rad}=0 \quad\Longrightarrow\quad \cos\theta_0=-\frac{\beta_{\rm rad}}{2\pi\,d}. \] […]
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