Frequency-reconfigurable filter antenna applied to UWB/WLAN

A reconstruction filter and antenna technology, applied in the direction of antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problems of small adjustable range, large size and loss, complex filter antenna structure, etc., to achieve miniaturization, Increased frequency selectivity and harmonic suppression, effects of good frequency selectivity and high harmonic suppression characteristics

Active Publication Date: 2017-10-27
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] To sum up, the problems existing in the prior art are: the current filter antenna has a complex structure, large size and loss, and a small adjustable range

Method used

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  • Frequency-reconfigurable filter antenna applied to UWB/WLAN
  • Frequency-reconfigurable filter antenna applied to UWB/WLAN
  • Frequency-reconfigurable filter antenna applied to UWB/WLAN

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] The invention includes a radiation structure, a feeding structure, a filtering structure, a radio frequency control structure and a dielectric substrate; the radiation structure adopts an elliptical monopole; the feeding structure adopts a three-port microstrip feeding. The filter structure adopts a bandpass filter structure distributed on both sides of the microstrip feeder; the radio frequency control structure includes a radio frequency component PIN tube, an inductor, a capacitor, a ground via hole and a high impedance bias line.

[0027] The application principle of the present invention will be described in det...

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Abstract

The present invention belongs to the technical field of antennae, and discloses a frequency-reconfigurable filter antenna applied to a UWB/WLAN. The frequency-reconfigurable filter antenna applied to the UWB/WLAN comprises: a radiation structure, a feeding structure, a filter structure, a radio frequency control structure, a reflection structure and a dielectric substrate. The present invention can achieve band switching among an ultra wide band state, a 2.4GHz WLAN narrow band state and a 5.8GHz WLAN narrow band state. Due to integrated design of a filter, and by controlling on-off of a diode, the antenna can work under the switched wide band or narrow band state. Moreover, due to an integrated filter function, the narrow band state can achieve good frequency selectivity and high harmonic suppression characteristics.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a frequency reconfigurable filter antenna applied to UWB / WLAN. Background technique [0002] With the rapid development of wireless communication technology, the use of spectrum resources is becoming more and more frequent, and the shortage of wireless spectrum limits the further development of wireless communication. Antennas suitable for ultra-wideband and multi-band become particularly important. In order to solve the above problems, a frequency reconfigurable antenna can be used, so that the antenna can dynamically work in multiple frequency bands, while the radiation pattern remains roughly unchanged. In a wireless communication system, when a filter is cascaded with an antenna, a matching circuit will be added to avoid impedance mismatch and performance degradation between devices, making the system complex in structure and large in size and loss. The patent "A frequency ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q1/48H01Q5/20
Inventor 邓敬亚侯思敏郭立新赵鲁豫姚娇李巾雍马捷黄友火
Owner XIDIAN UNIV
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