Liquid angular reflector antenna with reconfigurable frequency and adjustable lobe width
A reflector antenna and lobe width technology, applied in the field of microwave communication devices, can solve the problems of inability to achieve frequency reconfiguration, lobe width cannot be adjusted, etc., achieve adjustable lobe width, simplify complexity, and change antenna impedance. Effect
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example 1
[0036] Simulation example 1, reconfigurable antenna resonant frequency:
[0037] In this example, the commercial software HFSS is used for simulation. It is assumed that the heights of the first insulating device 32 and the second insulating device 22 are both 30 mm, and the nine hollow tubes of the two passive vibrator arms are filled with conductive liquid, respectively. In 21, the height of the conductive liquid is 250mm, 280mm, 310mm, and 340mm. The resonance frequency of the antenna is simulated in four cases, and the results are as follows image 3 Shown, where the ordinate represents the return loss S of the antenna 11 , the abscissa represents the frequency, the unit is MHz.
[0038] From image 3 It can be seen that when the height of the conductive liquid in the liquid-collecting hollow tube 21 of the active vibrator is 250 mm, the corresponding antenna resonant frequency is 208 MHz; when the height of the conductive liquid is 280 mm, the corresponding antenna reso...
example 2
[0039] Simulation example 2, the adjustment of the width of the horizontal lobe.
[0040] In this example, the commercial software HFSS is used for simulation. The resonant frequency of the antenna is set at 190 MHz, the height of the first insulating device 32 and the second insulating device 22 is 30 mm, and three passive vibrators containing conductive liquid and five passive vibrators containing conductive liquid are respectively set. The passive oscillators, 7 passive oscillators filled with conductive liquid and 9 passive oscillators filled with conductive liquid, simulate the H-plane gain of the antenna in these four cases, and three of the passive oscillators filled with conductive liquid are set at The intersection point of two passive vibrator arms and its adjacent positions; five passive vibrators filled with conductive liquid are set at the intersection point of two passive vibrator arms and its adjacent four positions; the other two cases are analogized in turn, an...
example 3
[0042] Simulation example 3, verification of antenna impedance matching.
[0043] In this example, the commercial software HFSS is used for simulation. It is assumed that the heights of the first insulating device 32 and the second insulating device 22 are always equal during the simulation process of this example. The nine hollow tubes of the two passive vibrator arms are all filled with conductive liquid. The height of the first insulation device 32 and the second insulation device 22 is 15mm, 20mm, 25mm, 30mm, the resonant frequency of simulation antenna under these four kinds of situations, its result is as follows Figure 5 Shown, where the ordinate represents the return loss S of the antenna 11 , the abscissa represents the frequency, the unit is MHz.
[0044] From Figure 5 It can be seen from the figure that the impedance bandwidth of the antenna is about 164MHz to 219MHz, and as the heights of the first insulating device 32 and the second insulating device 22 become...
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