JP2018074492A - Substrate type antenna - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a substrate type antenna that can transmit and receive a plurality of frequency signals through one signal line pattern while using a smaller substrate.SOLUTION: A one-face side coupling pattern is a closed loop coupling type coupling section pattern 2 in which a plurality of closed loops each including a hollow section 3A-3C are integrally coupled. A rear-face side coupling pattern is at least one closed loop independent type coupling section pattern 13 including another hollow section 9A substantially facing at least one of the hollow sections 3A-3C of the closed loop coupling type coupling section pattern 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a substrate type antenna that transmits and receives signals in a plurality of resonance frequency bands.

  As conventional substrate type antennas, there are Japanese Patent No. 4834551 (Patent Document 1) and Japanese Patent No. 5698606 (Patent Document 2). Patent Document 1 has a planar coupler and an antenna pattern, and the planar coupler is disposed on an RF double-sided printed circuit board (hereinafter referred to as “double-sided board”) and one first conductor surface of the double-sided board. A conductor plane primary loop pattern (hereinafter referred to as “C-shaped primary loop”) formed and partially cut, and a conductor plane formed on the other second conductor surface of the double-sided substrate and partially cut. A secondary loop pattern (hereinafter referred to as “C-type secondary loop”), and the C-type primary and C-type secondary loops are arranged opposite to each other with a dielectric plate on the middle layer of the double-sided substrate interposed therebetween, They are mutually capacitively coupled and inductively coupled (hereinafter referred to as “CM coupling”). In the equivalent circuit of the planar coupler, the distributed coupling capacitance between the C-shaped primary loop and the secondary loop in the CM coupling. Are connected in series, and the second conductor Are formed with a secondary side transmission circuit having a structure that can be regarded as a coplanar line connected to each terminal of the C-shaped secondary loop, and the antenna pattern connected to the secondary side transmission circuit is formed. An antenna system in which a planar coupler is integrally formed is described.

  Further, in Patent Document 2, a loop-shaped first coupling part pattern is formed on one side of a substrate made of a dielectric, and the first coupling part pattern is formed at both ends of the divided part of the first coupling part pattern. In the substrate antenna to which the antenna elements constituting the first antenna are respectively connected, a feeding point is formed at the end of the antenna element constituting the first antenna on the one side substrate surface of the substrate, and in the vicinity of the feeding point A grounding portion having a grounding point is formed, a central signal line of a coaxial cable is connected to the feeding point, a shield wire on the outer periphery of the coaxial cable is connected to the grounding point, and the other side substrate of the substrate On the surface, a loop-shaped second coupling portion pattern is formed by dividing one portion at a position facing the first coupling portion pattern, and second antennas are configured at both ends of the divided position of the second coupling portion pattern. There is described a substrate antenna characterized in that the first antenna and the second antenna are configured to be able to transmit and receive transmission / reception signals from a common feeding point and ground point, respectively. .

Japanese Patent No. 4834551 Patent No. 5698606

  However, in the conventional substrate type antenna configuration as described above, the substrate becomes large if an attempt is made to have a large number of resonance frequencies.

  Accordingly, an object of the present invention is to provide a substrate type antenna that can transmit and receive a plurality of frequency signals through one signal line pattern while using a smaller substrate.

  In order to achieve the above object, the present invention has a one-side coupling pattern and one-side antenna element connected to a transmission / reception pattern on one side of a substrate formed of a dielectric, and the coupling pattern on the back side of the substrate. In the substrate type antenna having the back side coupling pattern and the back side antenna element that are capacitively coupled to each other, the one side side coupling pattern is a closed loop coupling type that integrally couples a plurality of closed loops each having an empty portion. The back side coupling pattern is at least one closed-loop independent coupling pattern having other voids substantially opposite the voids of the closed-loop coupling coupling pattern.

  According to such a configuration, it is possible to further reduce the size by an integrated closed-loop coupling type coupling portion pattern, and to transmit / receive a plurality of resonance frequency signals through one signal line pattern while using a small substrate. Can do.

  Further, in addition to the above-described configuration, the present invention includes the one-side antenna element connected to the closed-loop coupling type coupling part pattern and the back-side antenna element connected to the closed-loop independent type coupling part pattern. The coupling pattern and the closed loop independent coupling pattern are arranged on the same side, and a ground pattern is arranged on the opposite side of the one-side antenna element in the closed loop coupling pattern.

  According to such a configuration, it is possible to obtain a substrate type antenna that exhibits a stable frequency characteristic without being affected by a ground pattern while using a small substrate.

  In addition to the above-described configuration, the present invention is characterized in that the one-side antenna elements coupled to the closed-loop coupling type coupling portion pattern are at least two antenna elements.

  According to such a configuration, two antenna elements can be determined at appropriate positions and can be coupled to the same closed loop coupling type coupling pattern by utilizing the structural features of the closed loop coupling type coupling unit pattern. .

  Further, according to the present invention, in addition to the above-described configuration, the back surface side coupling pattern includes a plurality of the closed loop independent coupling portion patterns substantially opposed to the closed loop coupling type coupling portion pattern, and each of the closed loop independent coupling portion patterns. The different back side antenna elements are connected to each other.

  According to such a configuration, the closed-loop coupling type coupling pattern is larger than the closed-loop independent coupling pattern because the coupling pattern is formed by integrally coupling a plurality of coupling patterns. A plurality of closed loop independent coupling part patterns can be easily arranged on the back side of the part pattern. Thus, the front and back surfaces of the substrate can be effectively utilized while taking advantage of the structural features, and the substrate can be miniaturized.

  In addition to the above-described configuration, the present invention is arranged so that the position of each antenna element connected to the closed-loop coupling type coupling pattern can be adjusted with respect to each antenna element connected to the closed-loop independent coupling pattern. It is characterized by that.

  According to such a configuration, since the closed-loop coupling type coupling part pattern is formed by integrally coupling a plurality of coupling part patterns, the coupling element becomes longer in the coupling direction. It is possible to combine while moving and adjusting the position.

  Further, in the present invention, in addition to the above-described configuration, the one-side antenna element connected to the closed-loop coupling type coupling unit pattern is two antenna elements, and the back-side coupling pattern includes the closed-loop coupling type coupling unit. Three closed-loop independent coupling patterns that are substantially opposed to the pattern, each of the closed-loop independent coupling patterns is connected to the different back-side antenna elements, and each one-side antenna element and the back-surface The total number of the side antenna elements is 5, one of which is the 800 MHz band, the other one is the 900 MHz band, the other one is the 1.5 GHz band, the other one The resonance frequency is a 1.9 GHz band, and the other resonance frequency is a 2.1 GHz band.

  According to such a configuration, antennas manufactured by three major mobile phone companies can be standardized in Japan, so that it is not necessary to design each time, and a substrate type antenna with stable performance can be provided. Moreover, since it is a substrate type, a standardized pattern portion can be obtained easily and easily.

  In addition to the above-described configuration, the present invention is characterized in that the three empty portions formed in the closed-loop coupling type coupling portion pattern and the respective empty portions of the closed-loop independent coupling portion patterns are opposed to each other. And

  According to such a configuration, when the position of each empty part is determined, it may be necessary to adjust the position on each antenna element side. However, the closed-loop coupling type coupling unit pattern integrates a plurality of coupling unit patterns. Since it is formed by coupling, it is long in the coupling direction, and the antenna element can be coupled by moving in the coupling direction and adjusting the position accordingly.

  According to the substrate type antenna according to the present invention, it is possible to further reduce the size by the integrated closed loop coupling type coupling portion pattern, and to transmit / receive a plurality of frequency signals through one signal line pattern while using a small size substrate. be able to.

It is a top view which shows one side of the board | substrate type antenna by one Example of this invention. It is a top view which shows the other side surface of the board | substrate type antenna shown in FIG. It is a division figure of the frequency band allocated to each company. It is a frequency characteristic figure of VSWR value in the conventional substrate type antenna. FIG. 5 is a frequency characteristic diagram of a VSWR value when the ground condition of the substrate type antenna shown in FIG. 4 is changed. FIG. 3 is a frequency characteristic diagram of a VSWR value when the ground condition of the substrate type antenna shown in FIGS. 1 and 2 is changed. It is a frequency characteristic figure of VSWR value when adjustment is added. It is a frequency characteristic figure of VSWR value when other adjustments are added.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a plan view showing one side surface of a substrate type antenna.

  The thin substrate 1 constituting the substrate type antenna is a square of about 20 mm × 78 mm. On the one side surface, a closed loop coupling type coupling portion pattern 2 is formed in the central portion in the longitudinal direction. The closed loop coupling type coupling portion pattern 2 includes a closed loop pattern 4A having a hollow portion 3A in a substantially central portion, a closed loop pattern 4B having a hollow portion 3B in a substantially central portion, and a closed loop pattern 4C having a hollow portion 3C in a substantially central portion. Three are formed integrally while leaving the empty portions 3A to 3C. The closed-loop coupling type coupling portion pattern 2 is coupled with each other so that there are independent empty portions 3A to 3C in the illustrated vertical direction, and the overall shape is a square or a similar shape.

  The first antenna element 5 and the second antenna element 6 are arranged at a predetermined distance substantially in parallel to the left side region in the drawing of the closed loop coupling type coupling portion pattern 2, and the first antenna element 5 is closed loop coupled. It is connected in the vicinity of the empty portions 3A and 3B in the mold coupling portion pattern 2. The second antenna element 6 is connected in the vicinity of the empty portions 3B and 3C in the closed loop coupling type coupling unit pattern 2.

  The signal line pattern 7 connected to the closed-loop coupling type coupling unit pattern 2 and the signal line pattern 7 are arranged in the vicinity in the right side region in the drawing of the closed-loop coupling type coupling unit pattern 2 in order to stabilize the potential of the signal line pattern 7. A ground pattern 8 having a ground potential is formed. The ground pattern 8 has a peripheral portion 8A arranged so as to sandwich the signal line pattern 7 extending substantially linearly.

  A ground point 9 is formed on the ground pattern 8, a feeding point 10 is formed on the signal line pattern 7, and a cable (not shown) is connected to the ground point 9 and the feeding point 10.

  FIG. 2 is a plan view showing the other side surface of the substrate type antenna.

  Three annular closed-loop independent coupling portion patterns 11, 12, and 13 are formed in a distributed manner in the central portion of the substrate 1 on the back side of the closed-loop coupling type coupling portion pattern 2 shown in FIG. 1. An empty portion 11A formed in the central portion of the closed loop independent coupling portion pattern 11 faces the empty portion 3A shown in FIG. 1 and an empty portion 12A formed in the central portion of the closed loop independent coupling portion pattern 12. Is opposed to the empty portion 3B shown in FIG. Further, the empty portion 13A formed at the center of the closed loop independent coupling portion pattern 13 corresponds to the empty portion 3C shown in FIG.

  The third antenna element 14 is connected to the left side region in FIG. 2 of the closed loop independent coupling portion pattern 11, and the fourth antenna element 15 is connected to the left side region in FIG. 2 of the closed loop independent coupling portion pattern 12. Has been. Similarly, the fifth antenna element 16 is connected to the left side region in FIG. 2 of the closed loop independent coupling portion pattern 13.

  The three annular closed-loop independent coupling patterns 11 to 13 are located at positions facing the closed-loop coupling coupling pattern 2 on the back surface side shown in FIG. Magnetically coupled.

  The first antenna element 5 and the second antenna element 6 shown in FIG. 1 are juxtaposed at a predetermined distance, and each of the antenna elements 14 to 16 shown in FIG. They are juxtaposed across each other. Further, the antenna elements 14 to 16 are slightly shifted so as not to face the first antenna element 5 and the second antenna element 6 shown in FIG. It arrange | positions so that the 4th antenna element 15 may be located.

  FIG. 3 is a frequency band allocation diagram used in IoT (Internet of Thing) of three major mobile phone companies in Japan.

  At present, the frequency bands used by three major mobile phone companies for IoT in Japan are divided as shown in FIG. In the case of Company D, an 800 MHz band (more specifically, 830 to 845 MHz, 875 to 890 MHz), a 1.5 GHz band (more specifically, 1447.9 to 1462.9 MHz, 1495.9 to 1510.9 MHz), and 2 GHz Three frequency bands of bands (more specifically, 1940 to 1960 MHz, 2130 to 2150 MHz) are used. In Company A, two frequency bands of 800 MHz band (more specifically, 815 to 830 MHz, 860 to 875 MHz) and 1575.42 MHz for position acquisition by GPS are used. Furthermore, Company S uses two frequency bands of 900 MHz band (more specifically, 900 to 915 MHz, 945 to 960 MHz) and 2 GHz band (more specifically, 1960 to 1980 MHz, 2150 to 2170 MHz).

  In the substrate type antenna according to the present embodiment, these frequency bands are roughly divided into an 800 MHz band 27, a 900 MHz band 17, a 1.5 GHz band 18, a 1.9 GHz band 19, and a 2.1 GHz band 20. .

  The 800 MHz band 27 is classified into the above-described sections including 815 to 830 MHz, 830 to 845 MHz, 860 to 875 MHz, and 875 to 890 MHz. The 900 MHz band 17 is classified into the above-described 900 to 915 MHz and 945 to 960 MHz. The 1.5 GHz band 18 includes the above-mentioned 1447.9 to 1462.9 MHz, 1495.9 to 1510.9 MHz, and 1575.42 MHz for GPS. Further, the 1.9 GHz band 19 is classified into the above-mentioned categories including 1940 to 1960 MHz and 1960 to 1980 MHz. Furthermore, the 2.1 GHz band 20 is classified into 2130 to 2150 MHz and 2150 to 2170 MHz.

  In accordance with these sections, the first antenna element 5 is manufactured to have a resonance frequency corresponding to the 800 MHz band 27 shown in FIG. 3, and the second antenna element 6 is placed in the 900 MHz band 17 shown in FIG. It is manufactured as having a corresponding resonance frequency. The third antenna element 14 is manufactured to have a resonance frequency corresponding to the 2.1 GHz band 20 shown in FIG. 3, and the fourth antenna element 15 is a resonance corresponding to the 1.9 GHz band 19 shown in FIG. The fifth antenna element 16 is manufactured to have a resonance frequency corresponding to the 1.5 GHz band 18 shown in FIG.

  When the ground condition is changed by changing the length of the cable connected to the ground point and the feeding point in the conventional substrate type antenna using two antenna elements having different resonance frequencies, the VSWR characteristic line shown in FIG. The resonance frequency 21 changes like the VSWR characteristic line 22 shown in FIG. However, when the closed loop coupling type coupling pattern 2 and the annular closed loop independent coupling pattern 11 to 13 disposed opposite to the closed loop coupling type coupling pattern 2 as in the substrate type antenna of the present embodiment described above are used, FIG. Even if the ground condition is changed as shown in the VSWR characteristic line 23 shown in FIG.

  Further, when the antenna elements 5 and 6 and the antenna elements 14 to 16 shown in FIGS. 1 and 2 are adjusted by changing the length, size, shape, etc., the characteristics are further improved as shown by the VSWR characteristic line 24 shown in FIG. be able to.

  Further, even if the substrate type antenna of the present embodiment shown in FIGS. 1 and 2 is the VSWR characteristic line 25 shown in FIG. 8, the lengths of the antenna elements 5 and 6 and the antenna elements 14 to 16 are as described above. When the height, size, shape, etc. are changed and adjusted, the VSWR value can be improved like the VSWR characteristic line 26.

  As can be seen from these explanations, according to the substrate type antenna of the present embodiment, the frequency characteristics and the VSWR value can be improved and the independent antenna elements 5 and 6 and the antenna element 14 even when the ground condition changes. ~ 16 can be easily performed. Thus, it is possible to obtain a multi-antenna that can be easily matched in the 800 MHz band, 900 MHz band, 1.5 GHz band, 1.9 GHz band, and 2.1 GHz band.

  In the embodiment described above, the total of the one-side antenna elements and the back-side antenna elements is five as shown in FIGS. 1 and 2, and the resonance frequency of the first antenna element 5 is the 800 MHz band, The resonant frequency of the antenna element 6 is 900 MHz, the resonant frequency of the third antenna element 14 is 2.1 GHz, the resonant frequency of the fourth antenna element 15 is 1.9 GHz, and the resonant frequency of the fifth antenna element 16 is 1.5 GHz. Although the band is used, the present invention is not limited to this.

  Further, the present invention is not limited to the method of dividing the resonance frequency band as described above. For example, if a substrate-type antenna in which the above-described two resonance frequency bands are realized with one antenna element has already been developed, it may be used, and the antenna element may have four or less as a whole. Even when the resonance frequency bands are divided as described above, the position of each antenna element is not limited to the illustrated example, and may be switched.

  By the way, in recent years, with the expansion of the IoT (Internet of Thing) market, wireless communication devices have begun to be incorporated into various devices although they are in small quantities. In addition, mini PCI interface communication modules have been sold by various companies, and there is an increasing demand for multi-carriers simply by replacing the communication modules. As a result, the required frequency band has increased from the conventional 2-3 frequency band, which is called multiband, to 4-5 frequency band.

  When the preferred embodiment of the present invention is applied to such a requirement, the five resonance frequency bands are reduced by using a single substrate 1 smaller than the substrate of the substrate type antenna that handles the three resonance frequency bands in the past. Transmission and reception are possible from the common signal line pattern 7.

  Further, in the above-described embodiment, the standard antenna structure for the three major mobile phone companies in Japan has been described, but the present invention is not limited to this. For example, the present invention can be applied to a substrate type antenna that is standardized as a substrate type antenna for two specific mobile phone companies or configured for each company.

  Further, the classification of the resonance frequency is not limited to the above-described one, and can be used. If the already developed substrate antenna for a wideband resonance frequency is used, for example, if the 800 MHz band and 900 MHz band shown in FIG. 1 are obtained as the common first antenna element 5, use this. The second antenna element 6 may be omitted.

  Further, the positions of the antenna elements 5, 6, 14, 15, 16 may be switched from the positions shown in FIGS. 1 and 2 to other positions.

  Furthermore, although the pattern shown in FIG. 1 is formed on the front surface side of one substrate 1 and the pattern shown in FIG. 2 is formed on the back surface side of the substrate 1, the present invention is not limited to this. For example, the pattern shown in FIG. 1 may be formed on one substrate 1, the pattern shown in FIG. 2 may be formed on another substrate, and these two substrates may be bonded together.

  As described above, according to the present invention, the one-side coupling pattern is the closed-loop coupling-type coupling pattern 2 in which a plurality of closed loops each having the empty portions 3A to 3C are coupled integrally, and the back-side coupling pattern is the closed-loop coupling pattern. It is characterized in that at least one closed-loop independent coupling portion pattern 11 having another void portion 9A substantially opposite to the void portions 3A to 3C of the coupling type coupling portion pattern 2 is provided.

  According to such a configuration, it is possible to further reduce the size by the integrated closed-loop coupling type coupling portion pattern 2 and transmit / receive a plurality of frequency signals through one signal line pattern 7 while using the small substrate 1. can do.

  Further, in addition to the above-described configuration, the present invention includes a one-side antenna element 5 or 6 coupled to the closed-loop coupling type coupling pattern 2 and back-side antenna elements 14 to coupled to the closed-loop independent coupling pattern 11 to 13. 16 is disposed on the same side of the closed-loop coupling type coupling part pattern 2 and the closed-loop coupling type coupling part patterns 11 to 13 and is located at a position opposite to the one-side antenna element 5 or 6 in the closed-loop coupling type coupling part pattern 2. The ground pattern 8 is arranged.

  According to such a configuration, it is possible to obtain a substrate type antenna that exhibits stable frequency characteristics without being affected by the ground pattern 8 while using the small substrate 1.

  In addition to the above-described configuration, the present invention is characterized in that at least two antenna elements 5 and 6 are one side antenna elements coupled to the closed-loop coupling type coupling unit pattern 2.

  According to such a configuration, the two antenna elements 5 and 6 are positioned at appropriate positions and coupled to the closed-loop coupling type coupling unit pattern 2 by utilizing the structural features of the closed-loop coupling type coupling unit pattern 2. can do.

  Further, according to the present invention, in addition to the above-described configuration, the back surface side coupling pattern has a plurality of closed loop independent type coupling portion patterns 11 to 13 substantially facing the closed loop coupling type coupling portion pattern 2, and each closed loop independent type coupling portion is provided. Different backside antenna elements 14 to 16 are connected to the patterns 11 to 13, respectively.

  According to such a configuration, the closed-loop coupling type coupling part pattern 2 is formed by integrally coupling a plurality of coupling part patterns 4A to 4C, so that it is larger than the closed-loop independent type coupling part patterns 11 to 13. However, a plurality of closed loop independent type coupling part patterns 11 to 13 can be easily arranged on the back side of the closed loop coupling type coupling part pattern 2. Thus, the front and back surfaces of the substrate can be effectively utilized while taking advantage of the structural features, and the substrate can be miniaturized.

  Further, in the present invention, in addition to the above-described configuration, each of the antenna elements 5 and 6 connected to the closed-loop coupling type coupling portion pattern 2 with respect to the antenna elements 14 to 16 connected to the respective closed-loop independent type coupling portion patterns 11 to 13. It is characterized in that the position of is adjustable.

  According to such a configuration, the closed-loop coupling type coupling portion pattern 2 is formed by integrally coupling a plurality of coupling portion patterns, and thus becomes longer in the coupling direction. Can be coupled while adjusting the position by moving in the coupling direction.

  In the present invention, in addition to the above-described configuration, the one-side antenna elements connected to the closed-loop coupling type coupling unit pattern 2 are the two antenna elements 5 and 6, and the back-side coupling pattern is a closed-loop coupling type coupling. Each of the closed loop independent coupling portion patterns 11 to 13 is connected to a different back side antenna element 14 to 16 respectively. The total of the direction side antenna elements and the back side antenna elements is five, and one of them has an 800 MHz band, the other one has a 900 MHz band, and the other one has a 1.5 GHz band. The other resonance frequency is a 1.9 GHz band, and the other resonance frequency is a 2.1 GHz band.

  According to such a configuration, antennas manufactured by three major mobile phone companies can be standardized in Japan, so that it is not necessary to design each time, and a substrate type antenna with stable performance can be provided. Moreover, since it is a substrate type, a standardized pattern portion can be obtained easily and easily.

  Further, in addition to the above-described configuration, the present invention includes three empty portions 3A to 3C formed in the closed loop coupling type coupling portion pattern 2, and each of the empty portions 11A to 11A formed in the closed loop independent type coupling portion patterns 11 to 13. 13A is opposed to each other.

  According to such a configuration, when the position of each empty portion is determined, it may be necessary to adjust the position on each antenna element side. However, the closed-loop coupling type coupling unit pattern 2 integrates a plurality of coupling unit patterns. Since the antenna elements 5 and 6 are moved in the coupling direction by that amount, the antenna elements 5 and 6 can be coupled while adjusting their positions.

DESCRIPTION OF SYMBOLS 1 Board | substrate 2 Closed loop coupling | bonding part pattern 3A-3C Empty part 5 First antenna element 6 Second antenna element 11-13 Closed loop independent coupling part pattern 11A-13A Empty part

Claims (7)

A one-side coupling pattern and one-side antenna element connected to a transmission / reception pattern on one side of a substrate formed of a dielectric, and a back-side coupling pattern capacitively coupled to the coupling pattern on the back side of the substrate; In a substrate type antenna having a back side antenna element,
The one-side-side coupling pattern is a closed-loop coupling type coupling unit pattern obtained by integrally coupling a plurality of closed loops each having a vacant part, and the back-side coupling pattern is formed in the vacant part of the closed-loop coupling type coupling unit pattern. A substrate-type antenna characterized in that it is at least one closed-loop independent coupling portion pattern having other vacant portions that are substantially opposed to each other.   The one-side antenna element connected to the closed-loop coupling type coupling part pattern and the back-side antenna element connected to the closed-loop independent coupling part pattern are connected to the closed-loop coupling type coupling part pattern and the closed-loop independent coupling part pattern 2. The substrate type antenna according to claim 1, wherein a ground pattern is disposed at a position opposite to the one-side antenna element in the closed-loop coupling type coupling portion pattern.   2. The substrate type antenna according to claim 1, wherein the one-side antenna elements coupled to the closed-loop coupling-type coupling unit pattern are at least two antenna elements.   The back side coupling pattern has a plurality of the closed loop independent type coupling part patterns substantially opposite to the closed loop coupling type coupling part pattern, and the different back side antenna elements are connected to the respective closed loop independent type coupling part patterns. The substrate type antenna according to claim 1.   The position of each antenna element connected to the closed-loop coupling type coupling part pattern is arranged to be adjustable with respect to each antenna element connected to the closed-loop independent coupling part pattern. Board type antenna.   The one-side antenna elements connected to the closed-loop coupling-type coupling part pattern are two antenna elements, and the back-side coupling pattern includes three closed-loop independent elements that are substantially opposed to the closed-loop coupling-type coupling part pattern. Each of the closed-loop independent type coupling part patterns is connected to the different back-side antenna elements, and the total of the one-side antenna elements and the back-side antenna elements is five, One resonance frequency is 800 MHz band, the other resonance frequency is 900 MHz band, the other resonance frequency is 1.5 GHz band, the other resonance frequency is 1.9 GHz band, the other one The substrate type antenna according to claim 1, wherein the resonance frequency of the book is in a 2.1 GHz band.   6. The substrate-type antenna according to claim 5, wherein the three empty portions formed in the closed-loop coupling type coupling portion pattern are opposed to the respective empty portions of the closed-loop independent coupling portion patterns. .