Ultra Wideband Antenna with Multiple Notches
A technology for ultra-wideband antennas and functions, applied to antennas, devices that enable antennas to work in different bands at the same time, electrical components, etc., can solve the problems that ultra-wideband antennas are not easy to be derived and expanded, and inconvenient to adjust, so as to facilitate the integration of wireless devices , good market prospects, easy to expand and derive effects
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Embodiment 1
[0046] refer to figure 1 , figure 2 , the present invention has the ultra-broadband antenna with dual-frequency notch function, the dielectric constant of the dielectric board 1 is 2.65, and the plate thickness of the dielectric board 1 is 0.8mm.
[0047] The 3.1-10.6GHz ultra-wideband use frequency band is obtained through the radiation patch 2 and the ground 6 with a cut corner, and the communication satellite C-band 6.7-7.1 is obtained through a pair of rectangular slots 4 near the left and right edges of the radiation patch 2 GHz notch function, on this basis, a slit slot (outer layer slit slot 5) is etched on the radiation patch 2 between the two rectangular slots 4 to obtain another notch frequency band.
[0048] The calculation formula of outer layer gap groove 5 length is: L notch =c / (f n *ε eff ),
[0049] Among them, c is the light beam, f n is the center frequency of the notch, ε eff is the effective dielectric constant, ε eff =(ε r +1) / 2, where ε r is the ...
Embodiment 2
[0052] refer to Figure 4 , the structure of the ultra-wideband antenna with triple-frequency notch function of the present invention is, in figure 1 Based on the structure, an inner layer slot 7 is etched inside the outer layer slot 5 , and the opening direction of the inner layer slot 7 is the same as that of the outer layer slot 5 . The ultra-wideband antenna with triple-frequency notch function of the present embodiment is in figure 1 An inner slot 7 is etched on the basis of the dual-frequency notch antenna to increase the frequency band of the notch.
[0053] The receiving frequency band and notch frequency band of the triple-band notch UWB antenna are reflected in its input return loss curve as follows Figure 5 , Figure 5 It reflects that the newly added notch frequency band is the 5-6GHz frequency band of WLAN, and its ultra-wideband receiving frequency band is 3-10.8GHz. In this way, the triple-frequency notch antenna can have a better notch function for the thr...
Embodiment 3
[0055] refer to Figure 6 , the structure of the ultra-wideband antenna with four-frequency notch function of the present invention is, in Figure 4 Based on the structure, an intermediate slot 8 is etched between the outer slot 5 and the inner slot 7 . The ultra-wideband antenna with four-frequency notch function of the present embodiment is in Figure 4 On the basis of the three-frequency notch antenna, the frequency band of the notch is increased by adding the middle slot 8 and distributing the slots on the radiation patch 2 .
[0056] The receiving frequency band and notch frequency band of the four-band notch UWB antenna are reflected on its input return loss curve, see Figure 7 , the quad-band notch antenna can have notch function in WiMAX (3.3-3.7GHz), WLAN (5.15-5.35GHz) and (5.725-5.825GHz), INSAT C-band (6.7-7.1GHz). On the basis of the three-frequency notch antenna, the four-frequency notch antenna separates two frequency bands for WLAN operation to perform notc...
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