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Ultra-wideband band-pass filter with adjustable notch and application

A band-pass filter, ultra-wideband technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve problems such as unsatisfactory effects and limited notch adjustable methods, and achieve the effect of enhancing input and output coupling.

Active Publication Date: 2020-05-01
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the current notch adjustable mode is limited and the effect is not satisfactory, and proposes an ultra-wideband bandpass filter with adjustable notch, so that the notch position can be in a larger range Internally adjustable

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  • Ultra-wideband band-pass filter with adjustable notch and application
  • Ultra-wideband band-pass filter with adjustable notch and application
  • Ultra-wideband band-pass filter with adjustable notch and application

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0034] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention relates to an ultra-wideband band-pass filter with an adjustable notch and application. The ultra-wideband band-pass filter comprises a large fan-shaped open stub, a first small fan-shaped open stub, a second small fan-shaped open stub, two rectangular defected ground structures, four spiral defected ground structure resonators, a first parallel coupling line and a second parallel coupling line. Four spiral defected ground structure resonators are loaded in two pairs, a varactor is embedded in each spiral defected ground structure resonator, and each pair of spiral defected ground structure resonators is provided with an independent direct-current voltage source for independent adjustment. The notch stop band position can be continuously adjusted in a large range of about 2.8GHz to 7 GHz in a passband, the notch depth can be guaranteed to be below -10 dB, the narrow-band communication frequency band with serious interference can be suppressed through flexible adjustmentaccording to the field interference condition, and the requirements of various different application scenes can be met.

Description

technical field [0001] The invention belongs to the field of microwave and millimeter wave technology, and relates to an ultra-wideband bandpass filter with adjustable notch wave and its application. Background technique [0002] As early as 2002, the Federal Communications Commission (FCC) of the United States has opened the precious frequency band of 3.1GHz ~ 10.6GHz, 7.5GHz, for free for commercial use. Ultra-wideband (UWB) filters play a vital role in UWB systems. There are some existing other narrowband communication systems in the UWB frequency band of 3.1GHz~10.6GHz, including wireless local area network WLAN (5.15~5.35GHz and 5.725~5.85GHz), X-band satellite communication system (7.25~7.75 GHz and 7.9~8.395GHz GHz), global microwave interconnection access system Wimax (3.4~3.6GHz), RFID (5.8GHz), etc. In order to adapt to a variety of different application environments, domestic and foreign research on adjustable notch is also constantly exploring and trying, and...

Claims

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Application Information

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IPC IPC(8): H01P1/203
CPCH01P1/203
Inventor 曾志斌白磊庄奕琪叶川
Owner XIDIAN UNIV
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