A Double Ridge Horn Antenna Based on Dielectric Column Deflection
A technology of ridge horn and dielectric column, which is applied in the field of radio frequency communication, can solve the problems of large volume of double ridge horn antennas, and achieve the effects of low standing wave ratio, perfect impedance matching, and wide working bandwidth
Active Publication Date: 2015-07-29
BEIJING UNIV OF TECH
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Problems solved by technology
In order to improve the gain performance of the antenna, the traditional double-ridged horn antenna obtains a large mouth surface by extending the transition section, which makes the double-ridged horn antenna relatively large in size
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[0023] First, according to the working frequency band requirements of the horn antenna, determine the size of the ridge waveguide in the waveguide section, and its cross-sectional schematic diagram is as follows figure 1 shown. In fact, the cut-off state of the electromagnetic wave is a gradual process, and the useful working bandwidth of the ridge waveguide is generally smaller than the theoretical working bandwidth. Therefore, try to consider the working frequency band of the actual horn antenna when designing the size of the waveguide. Select the length a, width b, and double ridge width a of the ridge waveguide 1 , double ridge spacing b 1 . It can be seen from the characteristic impedance of the transmission line that the ratio of the plate spacing to the plate width determines the impedance of the parallel plate. According to the odd-mode cut-off wavelength resonance equation of the double-ridge waveguide, the dimensions of the waveguide section are determined as a=2...
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The invention relates to a double-spine horn antenna for dielectric cylinder scratching action. The double-spine horn antenna for the dielectric cylinder scratching action is characterized in that holes are formed evenly at equal distance in a side face of each of two spines along the curved direction of each spine curve. The distance d between adjacent hole grooves along the opening direction is 4 to 7mm. The radius r of each hole is 0.8 to 2mm. The 8 to 13 hole grooves are formed in the side face of the each of the two spines of the double-spine horn antenna along the curved direction of each spin curve and a cylindrical dielectric material is filled in each hole groove. The radius of each cylinder is 0.7 to 1.9mm and relative dielectric constant of the dielectric material is 18 to 35. The dielectric material is fixed in each hole groove through adhesive. Meanwhile, an optimized design method of an exponential term and quadratic curve superposition is adopted by each spine curve, the gradient at a connecting portion of a smooth section and a linear section is equal through fine adjustment of the radius of curvature at the portion of a horn opening. According to the dielectric cylinder double-spine horn antenna, working frequency is 2.3 to 23 GHz. Standing-wave ratio of a whole frequency range is near 1.4, gain is near 13 dB and performance of the antenna is improved.
Description
technical field [0001] The invention relates to a dielectric column double-ridge horn antenna, in particular to a double-ridge horn antenna with a ridge structure inlaid with a dielectric column and with different ridge curve shapes, belonging to the technical field of radio frequency communication. Background technique [0002] Antennas are the key components for transmitting and receiving signals in ultra-wideband systems. With the development of microwave technology, research on broadband antennas has become increasingly important. Horn antennas have been fully applied and developed in the field of radio frequency communications. The size and shape of the antenna are very important. These characteristics determine the ability of the antenna to receive and transmit electromagnetic waves. [0003] The double-ridge horn antenna is a microwave antenna with a rectangular cross-section gradually opened by the waveguide terminal. In order to broaden its operating frequency band,...
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IPC IPC(8): H01Q13/02
Inventor 王群吴禄军刘占杰唐章宏
Owner BEIJING UNIV OF TECH