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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

Active Publication Date: 2017-11-28
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an ultra-wideband antenna with multiple notch functions, which solves the problems that the existing ultra-wideband antenna is not easy to derive and expand, and it is inconvenient to adjust the narrowband signal of wireless communication

Method used

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  • Ultra Wideband Antenna with Multiple Notches
  • Ultra Wideband Antenna with Multiple Notches
  • Ultra Wideband Antenna with Multiple Notches

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention provides an ultra-broadband antenna with multiple notch functions, which includes a rectangular radiation patch arranged on the top surface of the dielectric plate along the longitudinal centerline, and a rectangular radiation patch is symmetrically opened inward on both lateral sides of the radiation patch. There is an inverted U-shaped outer layer slot between the rectangular slots on both sides. The bottom edge of the radiation patch along the opening direction of the slot is connected with a feed microstrip line; corner land. The ultra-wideband antenna of the present invention has similar antenna structures and principles in the three modes. By increasing the number of inverted U-shaped slots on the rectangular radiation patch, the trapping functions of dual-band, triple-band, and quad-band are respectively realized, and the trapping functions are designed. When the wave frequency band is selected, the frequency band that needs to be notched can be selected by adjusting the length of the inverted U-shaped slot.

Description

technical field [0001] The invention belongs to the technical field of ultra-wideband antennas, and relates to an ultra-wideband antenna with multiple notch functions. Background technique [0002] UWB antenna, as an important part of UWB system, has been developed rapidly due to its smaller size, lower manufacturing cost, and easy integration with circuit boards. [0003] However, the wider frequency band 3.1-10.6GHz of UWB itself contains some wireless narrowband signal frequency bands, such as 3.3-3.7GHz WiMAX (IEEE 802.16 Worldwide Interoperability for MicrowaveAccess), 5.15-5.35GHz and 5.725-5.825GHz WLAN (IEEE 802.11a wireless local area networks), 6.7-7.1GHz communication satellite C-band (IEEE INSAT / super-extended C-band frequency), etc. will cause interference to the ultra-wideband system, and we must find a way to remove this interference. [0004] In practical applications, the interference environment of single-band, dual-band, triple-band, and even more frequen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q5/25H01Q5/314
Inventor 席晓莉杨海龙刘江凡
Owner XIAN UNIV OF TECH
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