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已同步 2025-08-07 04:56:51 +08:00
More updates to the wire dipole example.
这个提交包含在:
@@ -7,6 +7,8 @@ This section provides some example models of antennas. Each example comes with a
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Wire dipole antenna model
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=========================
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**INFO ON THIS MODEL IN PROGRESS**
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:download:`antenna_wire_dipole_fs.in <../../user_models/antenna_wire_dipole_fs.in>`
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This example demonstrates a model of a half-wavelength wire dipole antenna in free space. The length of the dipole is 150mm with a diameter of 6mm, and a 1mm gap between the arms.
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@@ -20,7 +22,7 @@ This example demonstrates a model of a half-wavelength wire dipole antenna in fr
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FDTD geometry mesh showing a wire dipole antenna model.
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The antenna is fed using the ``#tranmission_line`` command. The one-dimensional transmission line model virtually attaches to the dipole at the gap between the arms. The antenna has an input impedance :math:`Z_0` of 73 Ohms specified in the ``#tranmission_line`` command. The transmission line uses a Gaussian waveform with a centre frequency of 1GHz.
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The antenna is fed using the ``#tranmission_line`` command. The one-dimensional transmission line model virtually attaches to the dipole at the gap between the arms. The antenna has an input impedance (:math:`Z_0`) of 73 Ohms specified in the ``#tranmission_line`` command. The transmission line uses a Gaussian waveform with a centre frequency of 1GHz.
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Results
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-------
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@@ -33,7 +35,7 @@ Results
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.. _antenna_wire_dipole_fs_ant_params:
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.. figure:: images/antenna_wire_dipole_fs_ant_params.png
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.. figure:: images/antenna_wire_dipole_fs_ant_params.png
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s11 parameter and input impedance (resistance and reactance) of the antenna.
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二进制文件未显示。
之前 宽度: | 高度: | 大小: 146 KiB 之后 宽度: | 高度: | 大小: 144 KiB |
@@ -110,7 +110,7 @@ ax4.grid()
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# Plot frequency spectra of s11
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fig2, ax = plt.subplots(num='Antenna parameters', figsize=(20, 10), facecolor='w', edgecolor='w')
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gs2 = gridspec.GridSpec(3, 1, hspace=0.5)
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gs2 = gridspec.GridSpec(2, 2, hspace=0.3)
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ax5 = plt.subplot(gs2[0, 0])
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markerline, stemlines, baseline = ax5.stem(freqs[pltrange]/1e9, s11[pltrange], '-.')
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plt.setp(baseline, 'linewidth', 0)
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@@ -136,7 +136,7 @@ ax6.set_ylim(bottom=0)
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ax6.grid()
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# Plot input reactance (imaginery part of impedance)
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ax7 = plt.subplot(gs2[2, 0])
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ax7 = plt.subplot(gs2[1, 1])
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markerline, stemlines, baseline = ax7.stem(freqs[pltrange]/1e9, zin[pltrange].imag, '-.')
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plt.setp(baseline, 'linewidth', 0)
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plt.setp(stemlines, 'color', 'r')
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