Multi-resonance antenna
A multi-resonance and antenna technology, applied in the direction of resonant antenna, antenna, antenna coupling, etc., can solve the problems of increasing printing steps and increasing costs, and achieve the effect of weakening electric field coupling
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no. 1 example
[0042] 1A and 1B show a multiresonant antenna according to a first embodiment of the present invention. Figure 1A shows the multiresonant antenna viewed from the front surface side, while Figure 1B shows the multiresonant antenna viewed from the rear surface side.
[0043] Referring to FIGS. 1A and 1B , the dielectric base member 10 is a parallelogram rectangle and is formed of a high relative permittivity ceramic material. The lateral end surfaces 11 and 12 of the dielectric base member 10 contain through-holes 13 passing through the end surfaces 11 and 12 . Thus, the weight and cost of the dielectric base member are reduced.
[0044] A dielectric base member 10 is provided having a feed element 16 and a parasitic element 17 with electrodes formed on the surface of the elements, as will be discussed hereinafter. In particular, both the first radiation electrode 18 and the second radiation electrode 19 are formed in the shape of stripes on the first main surface (upper surfa...
no. 2 example
[0062] Now, referring to FIGS. 6A to 6C, a multi-resonance antenna according to a second embodiment of the present invention will be discussed. Components corresponding to those of the first embodiment shown in FIGS. 1A and 1B are given the same reference numerals, and repeated discussion of the same parts is omitted.
[0063] The multiresonant antenna of the second embodiment is different from that of the first embodiment in that the feeding element 43 has a different electrode structure.
[0064] In particular, referring to FIGS. 6A and 6B , it can be found that, unlike the radiation electrode shown in FIGS. 1A and 1B , the radiation electrode 18 of the feeding element 43 has a ground terminal 18C on the side of the end surface 22 of the dielectric base member 10 . The radiation electrode 18 is connected to the ground conductor layer 23 through the ground electrode 49 formed on the end surface 22 .
[0065] Instead, a capacitive load electrode 24 is formed on the end surfac...
no. 3 example
[0069] In the multiresonance antenna according to the third embodiment of the present invention, as shown in FIG. 7, the first capacitive load electrode 51 and the first ground electrode 53 on one side of the feeding element face each other with a predetermined mutual gap. , the formed parallel edges are perpendicular to the direction in which the first radiation electrodes extend. Thus, the length facing each other is the same as the width of the capacitively loaded electrode 51 . Electric force lines passing through the facing portion between the capacitive load electrode 51 and the ground electrode 53 extend greatly beyond the facing portion and enhance electric field coupling with adjacent parasitic elements. In other words, no electric field deflector can be provided on the feeding element side.
[0070] The protruding portion 55 of the second capacitive load electrode 52 is formed on the side of the parasitic element and is separated from the first capacitive load elect...
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