Ultra-wide band short circuit doublet antenna
A dipole antenna and ultra-broadband technology, which is applied in the field of ultra-broadband short-circuit dipole antennas, can solve problems such as complex structure and increase of antenna manufacturing cost.
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no. 1 example
[0030] Please refer to FIG. 1 , which is a structural diagram of an ultra-broadband short-circuit dipole antenna according to a first embodiment of the present invention. The ultra-broadband short-circuit dipole antenna 1 includes: a coaxial transmission line 13 and two first and second open annular radiating metal sheets 11 and 12 with approximately the same shape. The coaxial transmission line 13 has a central conductor 131 and an outer ground conductor 132 . The first and second opening ring-shaped radiation metal sheets 11 and 12 respectively have signal feeding points 111 and 121 and openings 112 and 113, and are approximately symmetrically arranged on both sides of the ultra-wideband short-circuit dipole antenna 1 to form an ultra-wideband short-circuit dipole. The two arms of pole antenna 1.
[0031] As shown in FIG. 1 , the symmetrical arrangement of the first and second ring-shaped radiating metal sheets 11 and 12 makes the directions of the two openings 112 and 122 ...
no. 2 example
[0040] Please refer to FIG. 7 , which is a structural diagram of an ultra-broadband short-circuit dipole antenna according to a second embodiment of the present invention. The difference from the first embodiment is that the ultra-broadband short-circuit dipole antenna 2 of the second embodiment is formed on the dielectric substrate 70 by etching or printing the first and second open annular radiation metal sheets 71 and 72; , and depending on manufacturing considerations or practical applications, adjust the shapes of the two ring-shaped radiating metal sheets 71 and 72 (the antenna is a rectangle as a whole, which is different from the radian design on both sides of the first embodiment) and the inner edge shapes of the openings 712 and 722. Through the design of the openings 712 and 722 and the short-circuiting thin metal sheets 74 and 75, the resonant current path of the antenna can also be extended to achieve the purpose of reducing the size of the antenna, and the inducta...
no. 3 example
[0042] Please refer to FIG. 8 , which is a structural diagram of an ultra-broadband short-circuit dipole antenna according to a third embodiment of the present invention. Compared with FIG. 1 , the ultra-broadband short-circuit dipole antenna 3 only uses a single short-circuit thin metal sheet 84 to adjust the impedance matching of the antenna, and other structures are the same as those of the first embodiment. Therefore, the ultra-broadband short-circuit dipole antenna 3 can also have the same impedance bandwidth and radiation characteristics as the first embodiment.
[0043] Please refer to FIG. 9 , which shows a return loss measurement diagram of the ultra-broadband short-circuit dipole antenna 3 of the third embodiment. In FIG. 9 , the vertical axis represents the antenna return loss value, and the horizontal axis represents the antenna operating frequency. It can be observed from the measurement results of the return loss that the return loss of the ultra-wideband short-...
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Abstract
Description
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Application Information
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