Antenna device, electronic device

Abstract

To reduce a size of an antenna device compatible with multiple bands.SOLUTION: An antenna device includes a conductor layer on which one slot is formed. The slot includes a first portion having two edge portions, a second portion having two edge portions, a connection portion that connects the first portion and the second portion, and an extension portion continuously arranged with the second portion. A portion of the first portion where the connection portion is continuously arranged and a portion of the connection portion which is continuously arranged with the first portion are non-parallel to each other. A portion of the connection portion which is continuously arranged with the second portion and a portion of the second portion which is continuously arranged with the connection portion are non-parallel to each other. A portion of the second portion which is continuously arranged with the extension portion and a portion of the extension portion which is continuously arranged with the second portion are non-parallel to each other. The connection portion is connected to a portion other than the two edge portions in the second portion, and only one feed point is provided with respect to the slot.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present technology relates to an antenna device and an electronic device, and particularly to an antenna device and an electronic device related to a slot antenna.

Background Art

[0002] A slot antenna using a metal plate with a hole is known as an antenna device. The slot antenna needs to form slots with lengths corresponding to the wavelengths of the radio waves to be handled. Therefore, in order for the slot antenna to support multiple bands, it is necessary to form slots with lengths corresponding to the wavelengths of the respective radio waves, making miniaturization difficult. For example, in Patent Document 1 below, a configuration is disclosed in which a variable capacitor is provided in an antenna having a resonant slot to support multiple frequencies.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, by providing a variable capacitor, the number of electronic components increases, which may lead to an increase in cost and assembly man-hours.

[0005] The present technology aims to solve the above problems and aims to miniaturize an antenna device corresponding to multiple bands.

Means for Solving the Problems

[0006] The antenna device of the present technology includes a conductor layer with one slot formed therein. The slot has a first portion having two ends, a second portion having two ends, a connecting portion connecting the first portion and the second portion, and an extension portion continuous with the second portion. A portion where the connecting portion is continuous in the first portion and a portion where the connecting portion is continuous with the first portion in the connecting portion are non-parallel. A portion where the connecting portion is continuous with the second portion in the connecting portion and a portion where the connecting portion is continuous with the second portion in the second portion are non-parallel. A portion where the connecting portion is continuous with the extension portion in the second portion and a portion where the connecting portion is continuous with the second portion in the extension portion are non-parallel. The connecting portion is connected to a portion of the second portion other than the two ends, and only one feeding point is provided for the slot. , the slot includes a first resonance portion having a resonance point in a first frequency band and a second resonance portion having a resonance point in a second frequency band. At least a part of the first resonance portion and the second resonance portion is a common part. A part from one end portion in the first portion to a portion continuous with the connection portion, the connection portion, a part from a portion continuous with the connection portion in the second portion to a portion continuous with the extension portion, and the extension portion form the first resonance portion, and the first resonance portion is composed of two of the second resonance portions. It is such. When corresponding to communication of a plurality of bands with one slot without including a variable capacitor, the portion of the conductor layer where the slot is formed can be made small.

[0007] The electronic device of the present technology includes an antenna device having a conductor layer with one slot formed therein corresponding to a plurality of bands. The slot has a first portion having two ends, a second portion having two ends, a connecting portion connecting the first portion and the second portion, and an extension portion continuous with the second portion. A portion where the connecting portion is continuous in the first portion and a portion where the connecting portion is continuous with the first portion in the connecting portion are non-parallel. A portion where the connecting portion is continuous with the second portion in the connecting portion and a portion where the connecting portion is continuous with the second portion in the second portion are non-parallel. A portion where the connecting portion is continuous with the extension portion in the second portion and a portion where the connecting portion is continuous with the second portion in the extension portion are non-parallel. The connecting portion is connected to a portion of the second portion other than the two ends, and only one feeding point is provided for the slot. , the slot includes a first resonance portion having a resonance point in a first frequency band and a second resonance portion having a resonance point in a second frequency band. At least a part of the first resonance portion and the second resonance portion is a common part. A part from one end portion in the first portion to a portion continuous with the connection portion, the connection portion, a part from a portion continuous with the connection portion in the second portion to a portion continuous with the extension portion, and the extension portion form the first resonance portion, and the first resonance portion is composed of two of the second resonance portions. It is such.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Embodiments for Carrying Out the Invention

[0009] Hereinafter, the embodiments will be described in the following order. <1. First Embodiment> <2. Second Embodiment> <3. Examples of Other Slot Shapes> <4. Modification Examples> <5. Application to Camera Devices> <6. Summary> <7. This Technology>

[0010] <1. First Embodiment> The slot antenna 1 as the antenna device of the first embodiment will be described. As shown in FIG. 1, the slot antenna 1 in this embodiment is configured by forming one slot 3 having a predetermined shape in a conductor layer 2 formed as a thin metal plate or the like.

[0011] The slot 3 is formed as a linear hole having a predetermined width W, and has a first portion 4, a second portion 5, a connection portion 6, and an extension portion 7.

[0012] The first portion 4 has two end portions 4a and 4b, and the connection portion 6 is connected to one end portion 4b.

[0013] The second portion 5 has two end portions 5a and 5b, and the connection portion 6 is connected to a portion other than the end portions 5a and 5b (for example, substantially the central portion). The second portion 5 is shorter in length than the first portion 4.

[0014] That is, the connection portion 6 is formed to connect the end portion 4b in the first portion 4 and the portion other than both end portions 5a and 5b in the second portion 5. The connection portion 6 is shorter in length than the first portion 4 and the second portion 5.

[0015] Further, the portion of the connecting portion 6 that is continuous with the first portion 4 and the portion of the first portion 4 that is continuous with the connecting portion 6 are non-parallel. Similarly, the portion of the connecting portion 6 that is continuous with the second portion 5 and the portion of the second portion 5 that is continuous with the connecting portion 6 are non-parallel.

[0016] The first portion 4, the second portion 5, and the connecting portion 6 may be formed linearly, or may be formed with some bends.

[0017] As shown in FIG. 1, the slot 3 in the present embodiment is formed such that the first portion 4, the second portion 5, and the connecting portion 6 are linear. That is, it can be said that the configuration in which the previous parts are non-parallel is realized by the fact that the first portion 4 and the second portion 5 are formed substantially parallel and the connecting portion 6 is connected to the first portion 4 and the second portion 5 at a substantially right angle. Forming the first portion 4, the second portion 5, and the connecting portion 6 linearly makes processing easier.

[0018] Also, as shown in FIG. 1, the first portion 4 is in the same plane position as the connecting portion 6, but the second portion 5 is shaped to extend to the right side of the paper surface from the connecting portion 6. In this way, by connecting the connecting portion 6 inside the end portion of the second portion 5, when the slot antenna 1 is capable of radiating and receiving radio waves corresponding to a plurality of frequencies, fine adjustment of each frequency becomes possible.

[0019] The extension portion 7 is formed continuously near one end portion (end portion 5b) of the second portion 5.

[0020] The shape of the extension portion 7 may be linear or may be formed with some bends. In the example shown in FIG. 1, it is formed by bending in a direction substantially parallel to the second portion 5 at a substantially central portion of the extension portion 7. The extension portion 7 is shorter in length than the first portion 4 and longer than the connecting portion 6.

[0021] The portion continuous with the extension portion 7 in the second portion 5 and the portion continuous with the second portion 5 in the extension portion 7 are non-parallel.

[0022] For the slot 3, a power feeding point 8 for resonating at a predetermined frequency is provided. The power feeding point 8 is the point where power supply is performed when a high-frequency power source is connected, and it consists of an antenna-side positive terminal 8a and an antenna-side negative terminal 8b. In the example shown in FIG. 1, the power feeding point 8 is set in the extension portion 7 of the slot 3. The antenna-side positive terminal 8a and the antenna-side negative terminal 8b of the power feeding point 8 are set at both edge portions in the width direction of the slot 3. A high-frequency power source is connected to the power feeding point 8. By having only one power feeding point 8, miniaturization of the power feeding circuit can be achieved.

[0023] The slot antenna 1 is an antenna device corresponding to a plurality of bands. For example, the slot antenna 1 can radiate and receive radio waves in the 2.4 GHz band used for WiFi (registered trademark), Bluetooth (registered trademark), etc. and the 5 GHz band used for WiFi, etc.

[0024] In the following description, the frequency band near 2.4 GHz is taken as the first frequency band, and its resonance frequency is taken as the first frequency f1. The band of the 5 GHz band is, for example, about 5.15 GHz to about 5.725 GHz for WiFi. In the following description, the frequency band near 5.1 GHz is taken as the second frequency band, and its resonance frequency is taken as the second frequency f2. And the frequency band near 5.8 GHz is taken as the third frequency band, and its resonance frequency is taken as the third frequency f3.

[0025] Since the slot antenna 1 can resonate at the first frequency f1, resonate at the second frequency f2, and resonate at the third frequency f3, communication in both the 2.4 GHz band and the 5 GHz band is possible.

[0026] Note that, by making the shape of the slot 3 capable of resonating at both the second frequency f2 and the third frequency f3, communication in the 5 GHz band with a wide bandwidth can be suitably performed. In particular, by setting the second frequency f2 and the third frequency f3 to frequencies near both ends in the 5 GHz band, suitable communication can be performed.

[0027] The slot antenna 1 includes a first resonance portion RP1 in which each part of the slot 3 resonates with the first frequency f1 as a resonance point, a second resonance portion RP2 in which resonance occurs with the second frequency f2 as a resonance point, and a third resonance portion RP3 in which resonance occurs with the third frequency as a resonance point.

[0028] Also, a part of each of the first resonance portion RP1, the second resonance portion RP2, and the third resonance portion RP3 is a common part.

[0029] Specifically, it will be described with reference to the attached drawings. FIG. 2 is a diagram showing the first resonance portion RP1. As shown in the figure, the first resonance portion RP1 includes a portion from one end portion (end portion 4a) of the first portion 4 to a portion continuous with the connection portion 6 (in this example, end portion 4b), the entire connection portion 6, a portion from a portion continuous with the connection portion 6 in the second portion 5 to a portion continuous with the extension portion 7 (substantially end portion 5b), and the entire extension portion 7.

[0030] FIG. 3 is a diagram showing the second resonance portion RP2. As shown in the figure, a part of the first resonance portion RP1 and the other part are respectively the second resonance portion RP2.

[0031] Specifically, the first portion 4 in the first resonance portion RP1 is one second resonance portion RP2, and the connection portion 6, the second portion 5, and the extension portion 7 in the first resonance portion RP1 are one second resonance portion RP2.

[0032] In this way, by making a part (or all) of the first resonance portion RP1 and the second resonance portion RP2 common, the length (total distance) of the slot 3 can be shortened, and the slot antenna 1 can be miniaturized.

[0033] In addition, since the second frequency f2 (5.1 GHz) is approximately twice the frequency of the first frequency f1 (2.4 GHz), it becomes possible to design the shape of the slot 3 such that the first resonance portion RP1 completely includes the two second resonance portions RP2. Thereby, further miniaturization of the slot antenna 1 can be achieved.

[0034] FIG. 4 is a diagram showing the third resonance portion RP3. As shown in the figure, the third resonance portion RP3 is composed of substantially all of the second portion 5 and all of the extension portion 7.

[0035] Thereby, resonance can occur with three types of frequencies (the first frequency f1, the second frequency f2, and the third frequency f3) as resonance points at the first portion 4, the second portion 5, the connection portion 6, and the extension portion 7 that constitute one slot 3.

[0036] The power supply unit 9 for supplying power to the power supply point 8 will be described with reference to FIG. 5. The power supply unit 9 includes an electronic circuit board 10 and a signal circuit 11. In addition, a supply unit side positive terminal 9a and a supply unit side negative terminal 9b are provided in the power supply unit 9.

[0037] The signal circuit 11 is configured to be able to generate an AC power supply of the first frequency f1, an AC power supply of the second frequency f2, and an AC current of the third frequency f3.

[0038] The supply unit side positive terminal 9a is connected to the antenna side positive terminal 8a, and the supply unit side negative terminal 9b is connected to the antenna side negative terminal 8b. Thereby, a high-frequency AC power supply is connected to the power supply point 8.

[0039] Note that it is desirable to set the power supply point 8 at a position where impedance matching can be achieved between the power supply unit 9 and the conductor layer 2 in the slot antenna 1.

[0040] <2. Second Embodiment> In the second embodiment, the slot antenna 1A differs from that in the first embodiment in the shape of the slot 3A.

[0041] The shape of the slot 3A of the slot antenna 1A is shown in FIG. 6.

[0042] The slot 3A includes a first portion 4, a second portion 5, a connection portion 6, and an extension portion 7. The difference from the first embodiment is that the connection portion 6 is connected to a portion other than the two end portions 4a and 4b in the first portion 4.

[0043] The portion from the end portion 4a in the first portion 4 to the portion continuous with the connection portion 6 constitutes a part of the first resonance portion RP1. Also, the portion from the end portion 4b in the first portion 4 to the portion continuous with the connection portion 6 constitutes a part of the fourth resonance portion RP4.

[0044] Specifically, it will be described with reference to the accompanying drawings. FIG. 7 is a diagram showing the first resonance portion RP1. As shown in the figure, the first resonance portion RP1 includes a portion from one end portion (end portion 4a) of the first portion 4 to the portion continuous with the connection portion 6, the entire connection portion 6, a portion from the portion continuous with the connection portion 6 in the second portion 5 to the portion continuous with the extension portion 7 (substantially end portion 5b), and the entire extension portion 7.

[0045] FIG. 8 is a diagram showing the second resonance portion RP2. As shown in the figure, the first resonance portion RP1 has a portion from the end portion 4a of the first portion 4 to the portion continuous with the connection portion 6 as one second resonance portion RP2, and the entire connection portion 6 and the portion from the portion continuous with the connection portion 6 in the second portion 5 to the portion continuous with the extension portion 7 and the entire extension portion 7 are regarded as another second resonance portion RP2.

[0046] FIG. 9 is a diagram showing the third resonance portion RP3. As shown in the figure, the third resonance portion RP3 is composed of substantially the entire second portion 5 and the entire extension portion 7.

[0047] FIG. 10 is a diagram showing the fourth resonance portion RP4. As shown in the figure, the fourth resonance portion RP4 includes a portion from the end portion 4b in the first portion 4 to the portion continuous with the connection portion 6, the entire connection portion 6, a portion from the portion continuous with the connection portion 6 in the second portion 5 to the portion continuous with the extension portion 7, and a part (or the whole) of the extension portion 7.

[0048] The fourth resonance portion RP4 is a portion that resonates with the fourth frequency f4 as a resonance point. For example, a frequency band near 6 GHz is set as the fourth frequency band, and its resonance frequency is set as the fourth frequency f4.

[0049] In this way, by dividing the first portion 4 into two portions and using each as a resonance portion that resonates at different frequencies (the first frequency f1 and the fourth frequency f4), a plurality of resonance portions can be combined into one portion. In addition, by using the first portion 4 as a plurality of resonance portions, miniaturization of the slot 3 can be achieved.

[0050] <3. Examples of Other Slot Shapes> In addition to the above-described shape, various shapes of the slot 3 are conceivable. An example thereof is shown in the attached drawing.

[0051] In the above example, an example in which two second resonance portions RP are formed by dividing the first resonance portion RP1 approximately in half is shown. That is, an example of using the first resonance portion RP1 as the second resonance portion RP2 by resonating it at the second harmonic (approximately the second frequency f2) of the first frequency f1 has been described.

[0052] In each of the examples of the slot 3 shown here, it has a configuration in which radio waves are irradiated and received at the second frequency f2 without resonating the first resonance portion RP1 at the second harmonic of the first frequency f1. In each figure, attention is paid to the second resonance portion RP2 that resonates at the second frequency f2 (5.1 GHz).

[0053] The slot 3B of the slot antenna 1B (see FIG. 11) has a second resonant portion RP2 that includes the portion from the end 5b in the second portion 5 to the portion continuous with the extension portion 7 and the entire extension portion 7.

[0054] The slot 3C of the slot antenna 1C (see FIG. 12) includes a third portion 12 formed substantially parallel to the first portion 4 and the second portion 5. The third portion 12 is formed to extend in the same direction as the direction in which the first portion 4 extends from the substantially central portion of the connection portion 6. The entire third portion 12 in the slot 3C, a part of the connection portion 6, a part of the second portion 5, and the entire extension portion 7 are defined as the second resonant portion RP2.

[0055] The slot 3D of the slot antenna 1D (see FIG. 13) includes a third portion 12 formed substantially parallel to the first portion 4 and the second portion 5. The third portion 12 is formed to extend in the direction opposite to the direction in which the first portion 4 extends from the substantially central portion of the connection portion 6. The entire third portion 12 in the slot 3D, a part of the connection portion 6, a part of the second portion 5, and the entire extension portion 7 are defined as the second resonant portion RP2.

[0056] The slot 3E of the slot antenna 1E (see FIG. 14) has a second resonant portion RP2 that includes the portion from the end 4b in the first portion 4 to the portion continuous with the connection portion 6, the entire connection portion 6, the portion from the portion continuous with the connection portion 6 in the second portion 5 to the portion continuous with the extension portion 7, and the entire extension portion 7.

[0057] In this way, a small antenna device corresponding to a plurality of frequencies can be realized without resonating at approximately twice the first frequency f1 for the first resonant portion RP1.

[0058] <4. Modification Example> The shape of the slot 3 may vary the shape of the end portions of each part with respect to each of the above-described examples. Specifically, a modification example (end portion 4a’) of the shape of the end portion of the first part 4 will be described with reference to FIG. 15.

[0059] The slot 3F is such that the shape of one end portion 4a’ of the first part 4 is different from the above-described end portion 4a. Specifically, the width of the end portion 4a’ is thickened. As a result, the characteristics of the first resonance portion RP1 are improved, and it is possible to improve the sensitivity with respect to radio waves of the first frequency f1.

[0060] In the example shown in FIG. 15, only the width of the end portion 4a’ of the first part 4 was thickened, but the width of the end portion 4b of the first part 4, the end portions 5a and 5b of the second part 5, or the width of the end portion of the extension portion 7 may be thickened.

[0061] In the above-described example, the band for WiFi was taken as an example, but the application of the present technology is not limited to this, and it is applicable to slot antennas corresponding to various bands such as bands used in mobile phone networks and bands of UWB (Ultra-Wideband).

[0062] <5. Application to Camera Device> An example in which the slot antenna 1 (1A, 1B, 1C, 1D, 1E, 1F) as the above-described antenna device is mounted on the camera device 100 will be described with reference to FIG. 16.

[0063] The camera device 100 includes a camera housing 101 and a lens barrel 102. On the upper part of the camera housing 101, a pentaprism portion 103 in which a pentaprism or an EVF (Electronic Viewfinder) is disposed inside is provided.

[0064] The pentaprism portion 103 includes an upper surface portion 103a and a side surface portion 103b, and the above-described slot antenna 1 is attached to the side surface portion 103b.

[0065] In the slot antenna 1, one slot 3 (3A, 3B, 3C, 3D, 3E, 3F) corresponding to communication of a plurality of bands is provided, so that the portion of the conductor layer 2 where the slot 3 is formed can be reduced. Therefore, the slot antenna 1 and the camera device 100 can be miniaturized.

[0066] In addition, by attaching the slot antenna 1 to the penta portion 103 provided to protrude above the camera device 100, the sensitivity of the slot antenna 1 can be improved. In particular, by attaching the slot antenna 1 to the side surface portion 103b of the penta portion 103, it is possible to prevent the attachment of accessories such as a strobe to the upper surface portion 103a of the penta portion 103 from being hindered. As a result, it is possible to improve the communication environment and miniaturize the camera device 100 without sacrificing other functions of the camera device 100.

[0067] In addition, since the side surface portion 103b of the penta portion 103 is formed as a surface that faces obliquely upward, the radio wave radiation direction of the slot antenna 1 is also set to a direction that is slightly upward from the side of the camera device 100. As a result, even if a metal member is arranged above the camera housing 101, it is less likely to affect the antenna performance of the slot antenna 1, and a good communication environment can be ensured.

[0068] In addition, in the example shown in FIG. 16, although it is provided to be exposed in the penta portion 103 of the camera housing 101, the slot antenna 1 may be covered with a resin member or the like so as not to be exposed. Thereby, it is possible to prevent an unintended portion of the slot antenna 1 from being short-circuited, and a normal operating state of the slot antenna 1 can be ensured.

[0069] <6. Summary> As described in each of the above examples, the slot antenna 1 (1A, 1B, 1C, 1D, 1E, 1F) as an antenna device includes a conductor layer 2 in which one slot 3 (3A, 3B, 3C, 3D, 3E, 3F) corresponding to a plurality of bands (for example, 2.4 GHz band and 5 GHz band) is formed. The slot 3 has a first portion 4 having two end portions 4a (4a'), 4b, a second portion 5 having two end portions 5a, 5b, a connection portion 6 connecting the first portion 4 and the second portion 5, and an extension portion 7 continuous with the second portion 5. Also, the portion where the connection portion 6 is continuous in the first portion 4 and the portion where the connection portion 6 is continuous with the first portion 4 are non-parallel, the portion where the connection portion 6 is continuous with the second portion 5 in the connection portion 6 and the portion where the connection portion 6 is continuous with the second portion 5 in the second portion 5 are non-parallel, and the portion where the connection portion 6 is continuous with the extension portion 7 in the second portion 5 and the portion where the extension portion 7 is continuous with the second portion 5 in the extension portion 7 are non-parallel. Furthermore, the connection portion 6 is connected to a portion other than the two end portions 5a, 5b in the second portion 5, and only one feeding point 8 is provided for the slot 3. When one slot 3 is used to support communication of a plurality of bands, the portion of the conductor layer 2 where the slot 3 is formed can be made smaller. Therefore, the slot antenna 1 can be miniaturized, and it becomes easy to mount on an electronic device. Also, it is possible to miniaturize the electronic device. Also, while the end portion 4b of the first portion 4 is in the same plane position with respect to the connection portion 6, the second portion 5 is formed to protrude in the width direction of the connection portion 6 with respect to the connection portion 6. In this way, by connecting the connection portion 6 inside rather than the end portion of the second portion 5, when the slot antenna 1 is capable of radiating and receiving radio waves corresponding to a plurality of frequencies, fine adjustment of each frequency is possible.

[0070] As described in each embodiment, the feeding point 8 may be provided at the edge of the extension portion 7 in the slot antenna 1 (1A, 1B, 1C, 1D, 1E, 1F). By providing the power supply point 8 at the common part of the first resonance part RP1, the second resonance part RP2, and the third resonance part RP3, it becomes unnecessary to provide a plurality of power supply points 8, and the miniaturization and simplification of the configuration of the power supply unit 9 can be achieved. Therefore, it is possible to contribute to the miniaturization of the antenna device.

[0071] As described in the first embodiment, the slots 3 (3A, 3B, 3C, 3D, 3E, 3F) in the slot antenna 1 (1A, 1B, 1C, 1D, 1E, 1F) include a first resonance part RP1 having a resonance point in a first frequency band (for example, a frequency band centered on the first frequency f1), and a second resonance part RP2 having a resonance point in a second frequency band (for example, a frequency band centered on the second frequency f2). At least a part of the first resonance part RP1 and the second resonance part RP2 may be a common part. By making a part of the resonance part common, the slot shape can be reduced, which can contribute to the miniaturization of the antenna device.

[0072] As described in each embodiment, in the slot antenna 1 (1A, 1B, 1C, 1D, 1E, 1F), the part from one end (end 4a (4a')) of the first part 4 to the part continuous with the connection part 6, the connection part 6, the part from the part continuous with the connection part 6 in the second part 5 to the part continuous with the extension part 7, and the extension part 7 together form the first resonance part RP1. The first resonance part RP1 may be configured to be composed of two second resonance parts RP2. Thereby, the first resonance part RP1 also functions as the second resonance part RP2. Therefore, the slot shape can be miniaturized. For example, when the second frequency f2 is set to approximately twice the frequency of the first frequency f1, it can be realized by forming two second resonance parts RP2 with the position approximately half the length of the first resonance part RP1 as the boundary.

[0073] As described in each embodiment, in the slot antenna 1 (1A, 1B, 1C, 1D, 1E, 1F), the second portion 5 and the extension portion 7 may be a third resonance portion RP3 having resonance points in a third frequency band (for example, a frequency band centered on the third frequency f3) in a plurality of bands (for example, the 2.4 GHz band and the 5 GHz band). Thereby, resonance corresponding to three types of frequencies (for example, 2.4 GHz, 5.1 GHz, 5.8 GHz) can occur in the first portion 4, the second portion 5, the connection portion 6, and the extension portion 7 that constitute one slot 3 (3A, 3B, 3C, 3D, 3E, 3F). Therefore, the conductor layer 2 can be miniaturized, contributing to the miniaturization of the antenna device.

[0074] As described in each embodiment, in the slot antenna 1 (1A, 1B, 1C, 1D, 1E, 1F), the first portion 4, the second portion 5, and the connection portion 6 may each be formed linearly. By forming the first portion 4, the second portion 5, and the connection portion 6 linearly, processing becomes easy, and it is possible to shorten the manufacturing time and reduce the manufacturing cost.

[0075] As described in the second embodiment, in the slot antenna 1A, the connection portion 6 may be connected to a portion other than the two end portions 4a and 4b in the first portion 4. That is, by dividing the first portion 4 into two portions and using each as a resonance portion resonating at a different frequency, a plurality of resonance portions can be combined into one portion, and the slot shape can be miniaturized.

[0076] As described in the second embodiment, in the slot antenna 1A, a portion from one end 4a of the two ends 4a and 4b in the first portion 4 to the portion continuous with the connection portion 6 is a part of the first resonance portion RP1 having a resonance point in the first frequency band (for example, a frequency band centered on the first frequency f1), and a portion from the portion continuous with the connection portion 6 in the first portion 4 to the other end 4b of the two ends 4a and 4b in the first portion 4 may be a part of the fourth resonance portion RP4 having a resonance point in the fourth frequency band (for example, a frequency band centered on the fourth frequency f4). Thereby, by using the first portion 4 as a plurality of resonance portions, it is possible to reduce the size of the slot shape.

[0077] As described with reference to FIG. 16 and the like, the camera device 100 as an electronic device includes an antenna device (slot antenna 1 (1A, 1B, 1C, 1D, 1E, 1F)) having a conductor layer 2 in which one slot 3 (3A, 3B, 3C, 3D, 3E, 3F) corresponding to a plurality of bands (for example, 2.4 GHz band and 5 GHz band) is formed. The slot 3 has a first portion 4 having two ends 4a (4a'), 4b, a second portion 5 having two ends 5a, 5b, a connection portion 6 connecting the first portion 4 and the second portion 5, and an extension portion 7 continuous with the second portion 5. A portion continuous with the connection portion 6 in the first portion 4 and a portion continuous with the first portion 4 in the connection portion 6 are non-parallel, a portion continuous with the second portion 5 in the connection portion 6 and a portion continuous with the connection portion 6 in the second portion 5 are non-parallel, a portion continuous with the extension portion 7 in the second portion 5 and a portion continuous with the second portion 5 in the extension portion 7 are non-parallel. The connection portion 6 is connected to a portion other than the two ends 5a, 5b in the second portion 5, and only one feeding point 8 is provided in the slot 3. By making one slot 3 compatible with communication in a plurality of bands, the portion of the conductor layer 2 where the slot 3 is formed can be reduced. Therefore, the size of the slot antenna 1 and the size of the electronic device can be reduced. Moreover, by miniaturizing the slot antenna 1, it is possible to prevent deterioration of the design of the electronic device and to eliminate or relax design constraints. As a result, the electronic device can be made lighter and easier to carry.

[0078] As described with reference to FIG. 16 and the like, the electronic device is the camera device 100 provided with the penta part 103, and the antenna device (slot antennas 1 (1A, 1B, 1C, 1D, 1E, 1F)) may be arranged on the wall surface of the penta part 103. Although it is also conceivable to provide the antenna device at the gripping portion of the camera device 100, considering the positional relationship with the lens barrel 102, there is a possibility that the radiation direction and reception direction of radio waves may be restricted by the metal portion provided on the lens barrel 102. However, according to this configuration, since the antenna device (slot antenna 1) is provided on the penta part 103 protruding upward in the camera device 100, a good communication environment can be ensured.

[0079] As described with reference to FIG. 16 and the like, in the camera device 100, the antenna device (slot antennas 1 (1A, 1B, 1C, 1D, 1E, 1F)) may be arranged on the side surface portion 103b of the penta part 103. Thereby, various accessories such as a strobe can be attached to the upper surface portion 103a of the penta part 103.

[0080] In the above-described example, an example in which only one power supply point 8 is provided has been described, but a plurality of power supply points 8 may be provided.

[0081] In the above-described example, an example in which current is supplied to the power supply point 8 by contact power supply by the power supply unit 9 has been described, but the implementation of the present technology is not limited to this. Specifically, as shown in FIG. 17, non-contact power supply may be performed to the power supply point 8. That is, a wiring board 14 for performing non-contact power supply is attached to a board arrangement portion 13 arranged at a position separated in the direction in which the surface of the conductor layer 2 faces the slot antenna 1. The wiring board 14 is electrically connected to the power supply unit 9' shown in FIG. 18, and supplies power to the power supply point 8 by an electric field coupling method or a magnetic field coupling method through the space between the wiring board 14 and the conductor layer 2. The power supply unit 9' includes an electronic circuit board 10 and a signal circuit 11. Further, the power supply unit 9' is provided with a power supply side positive terminal 9a' connected to the wiring pattern of the wiring board 14. Note that the electronic circuit board 10 and the wiring board 14 may be formed as one board.

[0082] Note that the effects described in this specification are merely examples and are not limited, and there may be other effects.

[0083] In addition, the above-described examples may be combined in any manner, and the various operational effects described above can be obtained even when various combinations are used.

[0084] <7. The present technology> The present technology can adopt the following forms. (1) A conductor layer having one slot formed therein, The slot includes a first portion having two ends, a second portion having two ends, a connection portion connecting the first portion and the second portion, an extension portion continuous with the second portion, and a portion where the connection portion in the first portion is continuous and a portion where the connection portion is continuous with the first portion in the connection portion are non-parallel, a portion where the connection portion is continuous with the second portion in the connection portion and a portion where the connection portion is continuous with the second portion in the second portion are non-parallel, a portion where the connection portion in the second portion is continuous with the extension portion and a portion where the extension portion is continuous with the second portion in the extension portion are non-parallel, The connection portion is connected to a portion of the second portion other than the two ends, The feeding point is provided at only one location with respect to the slot Antenna device (2) The feeding point is provided at the edge of the extension part The antenna device according to (1) above (3) The slot includes a first resonance part having a resonance point in a first frequency band and a second resonance part having a resonance point in a second frequency band At least a part of the first resonance part and the second resonance part is made a common part The antenna device according to any one of (1) to (2) above (4) The part from one end of the first part to the part continuous with the connection part, the connection part, the part from the part continuous with the connection part in the second part to the part continuous with the extension part, and the extension part, are made the first resonance part The first resonance part consists of two of the second resonance parts The antenna device according to (3) above (5) The second part and the extension part are made a third resonance part having a resonance point in a third frequency band The antenna device according to (4) above (6) The first part, the second part, and the connection part are each formed linearly The antenna device according to (5) above (7) The connection part is connected to a part of the first part other than the two end parts The antenna device according to any one of (1) to (6) above (8) The part from one of the two end parts of the first part to the part continuous with the connection part is made a part of the first resonance part having a resonance point in a first frequency band The portion from the portion continuous with the connection portion in the first portion to the other end of the two ends in the first portion is part of a fourth resonant portion having a resonance point in a fourth frequency band The antenna device according to (7) above (9) An antenna device having a conductor layer in which a plurality of band-corresponding slots are formed The slot A first portion having two ends A second portion having two ends A connection portion connecting the first portion and the second portion An extension portion continuous with the second portion, and has The portion continuous with the connection portion in the first portion and the portion continuous with the first portion in the connection portion are non-parallel The portion continuous with the second portion in the connection portion and the portion continuous with the connection portion in the second portion are non-parallel The portion continuous with the extension portion in the second portion and the portion continuous with the second portion in the extension portion are non-parallel The connection portion is connected to a portion other than the two ends in the second portion Only one power feeding point is provided in the slot Electronic device (10) A camera device provided with a penta portion The antenna device is disposed on the wall surface of the penta portion The electronic device according to (9) above (11) The antenna device is disposed on the side surface portion of the penta portion The electronic device according to (10) above

Explanation of Signs

[0085] 1, 1A, 1B, 1C, 1D, 1E, 1F Slot antenna (antenna device) 2 Conductor layer 3, 3A, 3B, 3C, 3D, 3E, 3F Slot 4 Part 1 4a, 4a’, 4b Ends 5 Part 2 5a, 5b Ends 6 Connection part 7 Extension part 8 Power supply point 100 Camera device (imaging device) 103 Pentagonal part 103b Side face part RP1 First resonance part RP2 Second resonance part RP3 Third resonance part RP4 Fourth resonance part

Claims

1. Comprising a conductor layer with one slot formed therein, wherein the slot has a first part with two ends, a second part with two ends, a connecting part connecting the first part and the second part, and an extension part continuous with the second part, wherein the part of the first part where the connecting part is continuous and the part of the connecting part continuous with the first part are non-parallel, the part of the connecting part continuous with the second part and the part of the second part continuous with the connecting part are non-parallel, the part of the second part continuous with the extension part and the part of the extension part continuous with the second part are non-parallel, the connecting part is connected to a part of the second part other than the two ends, only one power supply point is provided for the slot, the slot comprises a first resonant part having a resonance point in a first frequency band and a second resonant part having a resonance point in a second frequency band, at least a part of the first resonant part and the second resonant part is a common part, the part from one end of the first part to the part continuous with the connecting part, the connecting part, the part from the part continuous with the connecting part in the second part to the part continuous with the extension part, and the extension part form the first resonant part, the first resonant part consists of two of the second resonant parts antenna device.

2. The power supply point is provided at the edge of the extension part The antenna device according to claim 1.

3. The second part and the extension part are a third resonant part having a resonance point in a third frequency band The antenna device according to claim 1.

4. The first part, the second part, and the connecting part are each formed linearly The antenna device according to claim 3.

5. The connecting part is connected to a part of the first part other than the two ends The antenna device according to claim 1.

6. The part from one of the two ends of the first part to the part continuous with the connecting part is part of the first resonant part, The part from the part continuous with the connecting part in the first part to the other of the two ends of the first part is part of a fourth resonant part having a resonance point in a fourth frequency band The antenna device according to claim 5.

7. Comprising an antenna device having a conductor layer with one slot formed therein, The slot is a first part having two ends, a second part having two ends, a connecting part connecting the first part and the second part, and an extension part continuous with the second part, a part continuous with the connecting part in the first part and a part continuous with the first part in the connecting part are non-parallel, a part continuous with the second part in the connecting part and a part continuous with the connecting part in the second part are non-parallel, a part continuous with the extension part in the second part and a part continuous with the second part in the extension part are non-parallel, the connecting part is connected to a part of the second part other than the two ends, only one power supply point is provided in the slot, the slot includes a first resonant part having a resonance point in a first frequency band and a second resonant part having a resonance point in a second frequency band, at least a part of the first resonant part and the second resonant part is a common part, a part from one end of the first part to a part continuous with the connecting part, the connecting part, a part from a part continuous with the connecting part in the second part to a part continuous with the extension part, and the extension part form the first resonant part, the first resonant part consists of two of the second resonant parts electronic device.

8. a camera device provided with a penta part, the antenna device is arranged on the wall surface of the penta part The electronic device according to claim 7.

9. the antenna device is arranged on the side surface of the penta part The electronic device according to claim 8.

Images