TW200832813A - Multi-frequency antenna - Google Patents

Abstract

The present invention relates to a multi-frequency antenna comprising: a ground layer; a conduction layer provided with a first and second elongated recess; and a dielectric layer provided between the ground layer and the conduction layer; wherein the first and second elongated recess enable the antenna to operate as a first antenna portion having a fist operating frequency and a second antenna portion having a second operating frequency different from the first operating frequency.

Description

200832813 IX. OBJECTS OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to multi-frequency antennas, and is particularly concerned with multi-frequency chip antennas. [Prior Art] Digital communication has been widely used in the current generation, and data can be transferred between the locations of the incoming materials. In particular, the field of wireless communication has evolved from the field of I-to-telephone communication and/or other wireless-computer-related devices: indeed, the growth of wireless communication, especially the type of (radio frequency): hotline communication' The spectrum used to transmit radio waves has become a benefit. - The most important feature of any RF system is the design of the antenna. It is capable of transmitting and receiving wireless data as needed, and in addition to the specific operational requirements of the application. There are many types of antenna designs available, each with its own strengths and weaknesses. RF designers must try and select the type of antenna whose properties are best suited for the application. For the case of mobile phone applications, RF designers will often seek sophisticated antenna designs with low power properties because they are in the wireless arena and size, weight and portability are important. There are some known antenna geometries, such as standard bipolar. Or the loop antenna group is evil. However, in the field of RFID (radio frequency identification), the label is expected to have some antenna processing properties, such as small size, low profile and light weight. These antennas can be used as transmitters and receivers. Or a transceiver, and 5 200832813 can easily attach it to a package to be tracked or other removable assets for this dog-type application, patch antennas are usually the most suitable. The chip antenna comprises a metallized sheet which is stacked on a ground plane and separated from an insulating substrate. The chip antenna is attached thereto. An antenna member pattern is etched into the metal trace of the insulating substrate. The advantages of these antennas include that they can be easily fabricated and mechanically robust. In addition, the chip antenna can accommodate polarization diversity. A plan view of a known chip antenna is illustrated, and FIG. 2 illustrates a side view of the chip antenna of the figure 1. As shown in FIGS. 1 and 2, the chip antenna has a bottom grounding plate, and a A dielectric layer 14A over the ground plane 100, a conductive layer 110 over the germanium layer 14A, and an antenna feed point 130. The pattern can be fabricated, for example, using known printed circuit board (PCB) technology. And the chip antenna of Figures 2 and 2. The chip antenna of Figures 1 and 2 has a radiation pattern in any direction above the ground plane in the half sphere region. The thickness of the dielectric layer 140 determines the conductive layer 11 The separation from the ground plane 100, which affects the frequency range (bandwidth) of the chip antenna. In general, the thicker the dielectric layer 14 is, the higher the bandwidth is. Affect the performance of the sheet. For example, There is an inverse relationship between the physical size of the line and the resonant frequency of the antenna. That is, if the size of the slice is reduced, the resonant frequency will increase and reverse. When the size of the antenna is reduced, the antenna operates. 6 200832813 The resonance frequency is increased. h When the X-ray antenna is used, it is taken for some resonance frequencies.

The system will be degraded as the size of the sheet is reduced. However, the use of RFID is to reduce the size of the chip antenna as much as possible while still achieving the appropriate performance. The application of this paper is to seek to provide an improved multi-frequency antenna. f, [Description of the Invention] h eight according to an embodiment of the present invention, a multi-frequency antenna is provided, which includes a ground layer; a conductive layer is provided with a first and a second length. And a dielectric layer disposed between the ground layer and the conductive layer, wherein the first and second elongated recesses enable the antenna to operate as the first day having a first operating frequency a line portion, and a second antenna portion having a second operating frequency, the frequency being different from the first operating frequency. An advantage of the antenna of the present invention is that the person can transmit information twice by having two independent communication channels. According to another embodiment of the invention, the second antenna portion forms part of the first antenna portion. According to another embodiment of the invention, the conductive layer is electrically connected to the ground plane. According to another embodiment of the invention, the conductive layer is electrically connected to the ground layer by a metal via. According to another embodiment of the invention, the antenna further comprises: an electric 7 200832813 valley member </ RTI> attached to the conductive layer at the edge of a feed point. According to another embodiment of the invention, the capacitive member comprises a plurality of capacitors. In accordance with another embodiment of the present invention, the plurality of capacitors are placed equidistantly spaced along the edge of the feed point. According to another embodiment of the present invention, at least one of the plurality of capacitors forms part of the first antenna portion, and the plurality of capacitors

At least one of the devices constitutes a portion of the first antenna portion and the second antenna portion. According to another embodiment of the invention, the capacitive member is coupled to the ground plane. According to another embodiment of the invention, the capacitive member is electrically connected to the ground plane by metal coercing. According to another embodiment of the invention, the first and second elongated recesses are disposed substantially parallel to each other. ^ - According to another embodiment of the invention, the first and second elongated recesses are disposed substantially parallel to the non-radiative edges of the conductive layer. According to another embodiment of the present invention, a region defined by an outer edge of the conductive layer constitutes the first antenna portion, and a region defined between the second elongated recess constitutes the second Antenna section. According to another embodiment of the invention, the first frequency is below the frequency. &lt; One of the first antenna portion and the second and the first antenna portion and one of the antenna portions according to another embodiment of the present invention is capable of receiving the signal 8 200832813 the other of the two antenna portions Ability to transmit signals. According to another embodiment of the invention, both of the first antenna portions are capable of transmitting and receiving signals. According to another embodiment of the invention, the first antenna portion is capable of operating simultaneously. According to another embodiment of the invention, the first is in the range of 420 MHz to 460 MHz. According to another embodiment of the invention, the operation operates at a frequency of approximately 43 3 MHz. According to another embodiment of the invention, the range f is from 850 MHz to 1 〇〇〇 MHz. According to another embodiment of the invention, the operation operates at a frequency of approximately 915 MHz. According to another embodiment of the invention, the impedance is equal to a 50 ohm. According to another embodiment of the invention, the lengths 1 are in the range of 21 mm to 28 mm. According to another embodiment of the invention, the lengths 1 are approximately 21 mm. According to another embodiment of the invention, the distance ω between the two is between 6 mm and 24 mm! According to another embodiment of the invention, the distance 1 between the two is approximately 16 mm. According to another embodiment of the invention, the one antenna and the second antenna portion and the second antenna portion operate at a frequency of the arrangement. An antenna portion operates through the arrangement of the two antenna portions at the frequency of the alignment bow. - The antenna portion is aligned with the first and second frequencies to match the first and second elongated recesses. The first and second elongated recesses are in the range of the first and second elongated recesses. The first and second long recesses The first and second long recesses 9 200832813 The width t of each is in the range of 1 mm to 2 mm. According to another embodiment of the invention, the width t of each of the first and second elongated sections is approximately 丨mm. According to another embodiment of the invention, the conductive layer has a width w in the range of 5 mm to 60 mm. According to another embodiment of the invention, the conductive layer has a width w of 55 mm. Second, according to another embodiment of the present invention, the length L of the conductive layer is in the range of 〜4〇 mm to 50 mm. According to another embodiment of the invention, the length l of the conductive layer is substantially 44 mm.夂 According to another embodiment of the invention, the dielectric layer has a thickness of greater than 1 mm. According to another embodiment of the present invention, the antenna can operate from a gold layer. Table According to another embodiment of the invention, the antenna is a one-piece antenna. According to another embodiment of the invention, the antenna is used as part of a tracking tag. Bud According to another embodiment of the invention, the ground plane is electrically grounded. According to another embodiment of the invention, the antenna is square in shape. According to a further embodiment of the present invention, there is provided a multi-frequency antenna comprising: a ground layer; a conductive layer; and a dielectric layer disposed between the edge ground layer and the conductive layer, wherein The antenna has a first day, a file that is capable of operating at a first operating frequency, and two portions of the first antenna 10 200832813 that are capable of operating at a second operating frequency. According to another embodiment of the invention, the first frequency is different from the second frequency. According to another embodiment of the invention, the second antenna portion forms part of the first antenna portion. According to another embodiment of the invention, the conductive layer is electrically connected to the ground plane. According to another embodiment of the invention, the conductive layer is electrically connected to the ground layer by a metal via. According to another embodiment of the invention, the antenna further comprises a capacitive member 'connected to the conductive layer at the edge of a feed point. According to another embodiment of the invention, the capacitive member comprises a plurality of capacitors. In accordance with another embodiment of the present invention, the plurality of capacitors are placed equidistantly spaced along the edge of the feed point. According to another embodiment of the present invention, at least one of the plurality of capacitors forms part of the first antenna portion, and at least one of the plurality of capacitors constitutes the first antenna portion and the second day Part of the line section. According to another embodiment of the invention, the capacitive member is coupled to the ground plane. According to another embodiment of the invention, the capacitive member is electrically connected to the ground plane by a metal channel. According to a further embodiment of the present invention, a distance between methods for aligning an antenna of the present invention 11 200832813 is provided, and includes: adjusting: when the first and the second elongated concave distance are increased, The operating frequency of the antenna portion between the first and the second elongated recesses is lowered. According to the fourth embodiment of the antenna of the aB &gt;&quot;&quot;, a spectral tone of the present invention is provided, which includes: adjusting the first-and the second-shaped dimple of the second elongated recess As the width of the second elongated recess increases, the operating frequency of the antenna portion decreases. Γ A method for harmonizing the antenna of the present invention, according to one of the present invention, provides a method of harmonizing the antenna of the present invention, comprising: adjusting the operating frequency of the W-min, that is, reducing the length, and forming a second recess of the basin When the length of the second elongated recess increases, the additional advantages and novel features of the invention listed in the [Embodiment] will be partially described in the following description, and may be partially learned by the skill of the present invention.人士 盥 闰 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 The external antenna of the chip antenna of the embodiment is a rectangular antenna having a grounding plate 3. The second electric substrate 340 and a printed conductive 3531. The antenna also has long grooves 96 and 98. The two elongated grooves 96 and 98 are substantially parallel to the non-radiative edges 320, 390 of the conductive layer. The edge 35g of the conductive layer 31G is electrically connected to the ground plate. In the example, '12 200 can be formed within the dielectric layer 34G 832813 is provided with a metal channel in the hole, thereby electrically connecting one edge 350 of the conductive layer 3 i to the ground plate 3〇〇, and electrically connecting one edge 350 of the conductive layer 31 to the ground plate 3 The edge of the antenna (edge 3 50) can be effectively shorted to ground. Furthermore, the conductive layer 3 10 is connected to a plurality of edges 360 along the edge of the conductive layer relative to the edge 35 Capacitor 38. The capacitors 380 are used to force the edge capacitance of the antenna. In a preferred embodiment, the individual capacitors 38 of the plurality of capacitors 380 are connected to the conductive layer 31. The grounding plate is connected to the grounding plate 3. The capacitors 38 are connected to the grounding plate 3 by metal channels, and the channels are disposed in individual holes formed in the dielectric layer 34〇. 33 ,, whereby the capacitor 380 is electrically connected to the ground plane 3〇〇.

According to the embodiment of Fig. 3, the capacitors, 38 turns are disposed at the same edge along the conductive layer 310 as the RF feed point 37, and are distributed on either side of the RF feed point 37G. In an embodiment, the capacitors are spaced equidistantly along the edge 38 of the conductive 3531. There are more than one capacitor 38 turns on each side of the feed point 370 such that current is evenly distributed along the edge of the / conductive layer 3 1 〇. This advantageously provides a uniform electromagnetic field distribution for the antenna. The use of such capacitors 380 in the antenna of the present invention increases the edge capacitance of the antenna to reduce the physical length of the antenna. That is, by placing the capacitance H 38 置于 in the antenna circuit, the length of the antenna can be shortened while maintaining the operation of the antenna at a specific desired resonant frequency. That is, as described above, when the physical length of the antenna is shortened, the resonance frequency of the 13 200832813 antenna is increased by one. The capacitor 380 can increase the edge capacitance of the antenna and reduce the resonance =-experience-resonance frequency::=== ?r, a ^ ^ sub-package w port 38 〇 can make the antenna self-electrical angle and g is longer than its entity. Although the present invention is not limited to "Yi 380. Any device for increasing the edge capacitance of the antenna and thus for shortening the physical length of the antenna can be used.

Figure 4 illustrates a section of the operation of the squad (S|Q edge of the section о line taken along the line AA... J 凹槽 grooves 96 and 98 - for the guide shore and: 8 # shown in Figure 4. The equal length grooves are formed by two: two, except that the external light field 81 and 83 are used to establish the inner antenna: the split type _ shots 86, 88 are also defined by the outer edge. ... 9 sides of the long groove 96, 98 2 2 。. In addition, the smaller area defined between the edges, that is, as shown in Figure 3, the two mains 'can constitute the inner antenna part. Here In the embodiment, the P component also forms part of the outer antenna portion. Therefore, the antenna described in FIG. 3 can be operated to establish a "small Μ antenna material in %, ^; and a vertical-large external antenna I The antenna portion has a length ...width &quot; and the outer antenna portion has a length L and a width w. The inner antenna portion has an area smaller than the outer, 'knife. Since the inner antenna portion has a smaller than the outer antenna portion 14 200832813 Four antennas can be operated with high resonance frequency. The sentence is more than the antenna part. The geometry at the vibration frequency is such that it is produced at an electrical angle: the =-shaped groove 96, 98% is almost as if it does not exist.: "Hai Temple long groove 96, partially operated. However, in the ancient father At the low resonance frequency, the geometry of the entire antenna is the same as that of the 4-long groove 96, and the inner antenna portion operates. Therefore, at the higher resonance frequency, only b is formed in the σH conductive layer 31〇. The slot 96 is formed by an antenna with a smaller inner antenna portion and a larger outer portion. The multi-frequency performance obtained, the friend's mouth knife. ♦ L, the line is enough to operate at two different resonance frequencies. The outer antenna portion is according to a first neighboring eight-busch frequency (four), and the inner antenna has two resonant frequencies. The U frequency is lower than the first in the palladium example. The antenna of the present invention can operate simultaneously at: The second resonant frequency. In another embodiment, the present invention can receive the scorpion. For example, the operating frequency of the inner antenna portion can be used as the transmission frequency, and the operating frequency of the outer antenna portion can be used as the operating frequency. Receive &gt; rate, or rumor. So an antenna can The signals are transmitted and received at the same frequency. In another embodiment, the antennas of the inner and outer antennas, or both, can operate as a transceiver capable of transmitting and receiving signals. The antenna of the present invention can operate in Any combination of two common-split ratios in a spectrum. According to a preferred embodiment, the antenna operates at a frequency as detailed below: 15 200832813 1) External antenna portion _ 43 3 MHz, The antenna portion _ 9 j 5 MHz, or 2) the outer antenna portion - 433 MHz, the inner antenna portion - 868 MHz. In one embodiment of the invention, the dielectric layer 34 〇 has a thickness greater than 6 mm. In addition, the RF feed point 37 is located at the edge 360 of the conductive layer 3ι. The antenna shown in Fig. 3 has a rectangular shape, but it should be understood that other antenna shapes, such as a square or the like, may be used. Some chip antennas are round. Figure 5 illustrates the frequency response of an antenna of the present invention utilizing a simulation kit. The line shows that the antenna operates in the aforementioned first pair of frequency groups, wherein the first operating frequency at point 42 is 433 MHz and the second operating frequency at point 44 is 9 1 5 MHz. A chip antenna according to an embodiment of the present invention is designed in two stages. In this first phase, the desired frequency response of the antenna is (6) 利用 using, for example, hmiet 'IE3D, Micr〇ware. And so on the simulation of the electromagnetic simulation software. That is, as shown in the above, item 5 shows the desired frequency response of the antenna using a related simulation package software. FIG. 6 further shows the same simulation, 纟&quot; of the antenna according to the preferred embodiment of the present invention, wherein FIG. 5 illustrates the frequency. Response, while Figure 说明 illustrates 16 200832813 an impedance pattern. The second phase of the antenna design involves prototyping of the antenna, which can be constructed, for example, using conventional FR-4 PCB materials. Then, the smaller the antenna is, the more the antenna needs to be calibrated to operate at the desired resonant frequency. Figures 7 through 9 illustrate how adjusting the geometry of the antenna can adjust how often the antenna operates.

Figure 7 illustrates the frequency variability when the width ω of the inner antenna portion (i.e., the distance between the elongated grooves) is changed. The width ω varies from 6 mm to 24 mm (1/2ω varies from 3 mm to 12 mm). During the test, the width w of the outer antenna portion (the conductive layer 310) is fixed to 55 mm; the length L of the outer antenna portion (the conductive layer 310) is fixed to 44 mm; the length of the elongated groove 1 Fixed to 21 mm and the width t of the long grooves is fixed at 1 mm. When the twist ω of the antenna portion in the 增加 increases, the operating frequency of the inner antenna portion decreases. That is, as can be observed from Fig. 7, when ω = 6ιηη^·(ι/2ω = 3 mm), the operating frequency of the inner antenna portion is about 1 〇〇〇. However, when ω = 24 mm (Zoo = 12 mm), the inner antenna section operates at approximately 900 MHz. Furthermore, in theory, the variability of the width ω of the inner antenna portion should not substantially affect the operating frequency of the outer antenna portion, which should be maintained at 433 MHz. In practice, as shown in Fig. 7, when 1 = 6 mm 0CO = 3 mm), the operating frequency of the outer antenna portion is about 46 〇 MHz, and when ω = 24 mm (1/2 ω = 12) At mm), the outer antenna portion 17 200832813 operates at approximately 420 MHz. Figure 8 illustrates the variation of the frequency when the width t of the elongate grooves is changed. The increment of the width of the long groove "_" is added from i_掸 to 2_. During the test, the outer antenna portion (the width W of the conductive layer 31 is fixed to 55 匪; the outer antenna portion (the length of the conductive layer 3 is fixed to 44 mm; the length of the elongated groove)丄 is fixed to η mm, and the width of the inner antenna portion is fixed to 16 kPa = 8 mm. When the width t of the equal-shaped grooves is increased, the frequency is lowered. As can be observed from Fig. 8 , the ^ antenna part of the operation J field 1 - 1 mm, the inside

The operating frequency of the antenna section is approximately 915 M ^ i. However, when t = 2 mm, the operating frequency of the antenna split is approximately 88 。. : Such as: ... 35, in theory, the width and the opposite nature of the long groove should not affect the antenna portion of the outer antenna portion should be maintained at 433 MH, as shown in the outside of the δ _ _ _. As shown in Figure 8, the field of the antenna is ♦ MHz, and when t = 2 h, half, and 々 434 430 MHz 7 (7)... The operating frequency of the antenna part is about Figure 9. The length of the long grooves is the opposite sex. During the test of the length of the groove &quot; the rate of the money, the outer antenna part (the guide _ l28mm. at 55 mm; the outer antenna sees another W 疋 I knife v mouth 夺 夺 书 31 31 31 31 31 31 31 ~ 匪; the width of the equal-shaped groove t &amp; □ 疋 is 44, the width ω is fixed at 疋 lmm, and the inner antenna 疋 is 16 mm &gt; 8 _). 18 200832813 When the length i of the elongate grooves increases, the frequency decreases. That is, as can be observed from Fig. 9, when the operation of the antenna portion is about 915 MHz. However, when =' the day's day, the inner antenna portion operates at a frequency of about 85 〇 MHz. Mm is as shown in Figures 7 and 8 above. In theory, the length of the material should not affect the operation of the outer antenna part. The rate of operation of the outer antenna part is about 434 MHz. And when i = 28 mm, the sheep, the spoon, the k + T, the 7th antenna part, the frequency of your selection is about 420 MHz. The magical wood works as explained in the previous section, a + ^ 〇 ¥ out, although When the groove dimension changes, the lower operating frequency of the outer and spring portions does not change significantly. Therefore, the operation of the antenna portion outside the frequency does not change significantly. To change the frequency of the outer antenna portion The width of the outer antenna portion (the conductive layer 31 〇) can be changed. The length of the outer antenna portion (the conductive layer 310) is in this case. The operating frequency of the antenna portion will be from 43 3 MHz. And the operating frequency of the antenna portion of the crucible should theoretically remain fixed. The outer antenna portion length L of mm; a long groove width t of 16 η mm; and in the preferred embodiment of the present invention, the antenna has - 55 mm outer antenna part width W; - 44 inner antenna part width ω; 21 mm long groove Length 1. Figures 10 and 11 illustrate that for an antenna of the invention, when the external antenna portion operates at a resonance frequency of 433 MHz, it is only a midday guard and when the inner antenna portion operates at 19 200832813 91 5 The current density distribution at the resonant frequency of MHz. As can be seen from Figure 10, the current density distribution is approximately the same across the antenna because the entire antenna is used to resonate at a lower frequency, i.e., To the larger outer antenna portion. As can be seen from Figure U, the current density distribution between the grooves 96, 98 increases when compared to the rest of the antenna, where the definition is defined Internal antenna. This is because the smaller inner antenna is used to resonate at the souther frequency of 915 MHz. Now that the kite returns to the appearance view of Figure 3, it should be understood that the length 1 of the long grooves %, 98 is Significant. If the grooves are too short, the antenna will not effectively resonate at higher frequencies. However, if the grooves are too long, the (iv) f-line will not effectively resonate at lower frequencies. The groove is designed. The antenna can incorporate two resonance frequencies. And the distance is sufficiently separated, the narrow frequencies are still matched 'and preferably matched with 5 ohm impedance, so there is only a single feed point 370. The size of the slab antenna is variable. However, its size is Unable to = the size of the inner (that is, its dimension will produce - the higher resonant frequency ..., but also enough to achieve a small electrical antenna that can be used at lower frequencies. The antenna according to an embodiment of the present invention may have any form as long as the Haisi-shaped grooves 96, 98 are disposed such that the inner and outer antennas can be constructed to resonate at different frequencies. And the use of known PCB technology to fabricate an antenna of the invention. Treated with a U by chemical or copper restoring to form the same length 20 200832813 The antenna of the present invention can operate away from a metal surface. Moreover, it is more efficient when the antenna of the present invention is placed on a metal surface. Therefore, according to a preferred embodiment, the antenna of the present invention has a special application in the field of rf tag tracking. In detail, the container or package that should be sent or routed to the specific destination can be easily tracked by attaching a copy of the antenna to the metal (or other) table of the container. φ. Thereby, information about the container can be easily transmitted or received. It should also be understood that there are many different applications and fields of use for the chip antenna geometry described in this disclosure. Some of these items include: - any RF point-to-point link system; - any RF point-to-multipoint link system; - any RF tag, whether passive or active; - any RF transmitter, receiver and/or Transceiver; any sensor application with an RF link for data relay transmission. Those skilled in the art will be able to understand that the present invention has been described as being the best mode of carrying out the present invention and other modes as appropriate, and the invention should not be limited to the description of the preferred embodiments herein. Specific configurations and methods revealed. Those skilled in the art will recognize that the present invention has a wide range of applications in different types of antennas, and that a wide range of modifications can be made to the embodiments without departing from the application. 200832813 The concept of the invention as defined in the patent scope [Simplified Description of the Drawings] For a better understanding of the present invention and how to practice the invention, reference is made to the accompanying drawings by way of example only, in which: FIG. Figure 2 illustrates a side view of the chip antenna of Figure 1; Figure 3 illustrates an external view of the antenna according to an embodiment of the present invention; Figure 4 illustrates a Figure L@L diagram; The cross-section of the antenna and the line AA is drawn. Figure 5 illustrates the impedance of the antenna of the invention. Figure 6 illustrates the impedance of an antenna of the present invention. Figure 7 illustrates that the antenna of the present invention is two of the antennas. Distance. The calculated variability in the operating frequency when 〇 is changed; the inter-slot tree diagram 8 illustrates the calculated variability in the operating frequency of the antenna of the present invention when the width t of the elongated groove of the antenna is changed; And / / description - the calculated variability of the antenna of the present invention at the operating frequency when the length 1 of the long groove of the antenna is changed; 1-2 description - the antenna of the present invention operating at a relatively low frequency Current mobility If diagram; and flow:: Ming—Electricity of the antenna of the present invention operating at a relatively high frequency [Main component symbol description] 22 200832813 r %,

81 External radiation field 83 External radiation field 86 Long groove radiation field 88 Long groove radiation field 96 Long groove 98 Long groove 100 Ground plate 110 Conductive layer 130 Antenna feed point 140 Dielectric layer 300 Ground plate 310 Printed Conductive Layer 320 Non-radiative Edge 330 Ground Plate 340 Dielectric Layer 350 Conductive Layer Edge 360 Conductive Layer Edge 370 RF Feed Point 380 Capacitor 390 Non-radiative Edge 23

Claims (1)

200832813 X. Patent Application Fan Park·· 1. A multi-frequency antenna comprising: a ground layer; a conductive layer provided with first and second elongated recesses; and a dielectric layer Between the ground layer and the conductive layer; wherein the first and second elongated recesses enable the antenna to operate as a first antenna portion having a chirp operating frequency and a second operating frequency The second antenna portion, and the second operating frequency is different from the first operation. 2. The antenna according to claim 1, wherein the second antenna portion constitutes the first antenna portion 3. The antenna of claim 1 or 2, wherein the conductive layer is electrically connected to the ground layer. The antenna of claim 3, wherein the conductive layer is The antenna is electrically connected to the grounding layer by a metal channel. The antenna of any one of claims 1 to 4, further comprising: a capacitor member connected at an edge of the feed point On the conductive layer. The antenna of claim 5, wherein the capacitor member comprises a plurality of capacitors. The antenna of claim 6, wherein the plurality of capacitors are equally spaced along the edge of the feed point. The antenna of claim 6 or claim 7, wherein at least one of the plurality of capacitors forms part of the first antenna portion, 24 200832813 and at least one of the plurality of capacitors The first antenna portion and the antenna portion of the fifth antenna portion of the fifth embodiment of the present invention, wherein the capacitor member is connected to the ground layer. The antenna of claim 9, wherein the capacitor member is electrically connected to the ground layer by a metal channel. U. The antenna of any one of claims 1 to 10. And wherein the first and second elongated recesses are disposed substantially parallel to each other. The antenna of any one of the preceding claims, wherein the first and second long The concave portion is roughly flat An antenna according to any one of claims 1 to 12, wherein an area defined by an outer edge of the conductive layer constitutes the first antenna And the antenna of any one of the first and second long recesses, wherein the antenna is defined by the first and second elongated recesses. The first frequency is lower than the second frequency. The antenna according to any one of claims 1 to 14, wherein the first antenna portion and the second antenna portion are The person is capable of receiving a signal, and the other of the first antenna portion and the second antenna portion is capable of transmitting a signal. The antenna of any one of claims 1 to 14, wherein both the first antenna portion and the second antenna portion are capable of transmitting and receiving signals. 200832813 The antenna described in any of items 1 to 16 of Lizhong, / Lili, and the second antenna portion and the second antenna portion can operate simultaneously. The antenna of any one of clauses 1 to 17, wherein the first antenna portion operates at a frequency within a dry circumference of M 420 MHz to 460 MHz. The antenna of any one of the items 1 to 18 of the patent application, wherein the antenna portion of the brother arranges the slave system to operate at a frequency of approximately 433 MHz. The antenna of any one of claims 1 to 19, wherein the second antenna portion is characterized by ..., and the work is disposed in a range of 850 MHz to 1000 MHz. Operating at frequency. The antenna of any of clauses, wherein the second antenna portion is arranged to operate at a frequency of approximately 915 achievable. 22. The antenna of claim 1, wherein the temple brother &quot;and the second frequency|7C offers JhA Λ shoulders are matched to a 50 ohm impedance. 2 3 · If you apply for a patent range of $1. The antenna according to any one of the items 2 to 2, wherein the length 1 of the younger brother and the second-length concave and dangerous + is in the range of 21 mm to 28 mm. The antenna of any one of clauses 1 to 23, wherein the length of the first and second elongated recesses is approximately 21 mm. The antenna of any one of the preceding claims, wherein the distance ω between the first and second elongated recesses is in the range of 6 mm to 24 mm. The antenna of any one of the first to second and second long recesses, wherein the distance between the fourth and second long recesses is _1, approximately 16 mm ° 27· An antenna according to any one of the preceding claims, wherein the width t of each of the first and second elongated recesses is in the range of ii to 2 mm. The antenna according to any one of claims 1 to 27, wherein the length t of each of the first and second elongated recesses is substantially a kneading surface. 29. The antenna of any of items i to 28 of the patent specification, wherein the thickness 4 of the cladding layer is in the range of 5 〇 to 6 〇 mm. 30. The antenna of any of clauses ii to 29, wherein the width of the conductive layer is approximately 55 mm. 31·If you apply for a patent scope! The antenna of any one of the preceding claims, wherein the length L of the conductive layer is in the range of 4 〇 to 5 〇. The antenna according to any one of the preceding claims, wherein the length L of the conductive layer is approximately 44 mm. The antenna of any one of the preceding claims, wherein the dielectric layer has a thickness greater than 1.6 mm. The antenna of any one of claims 1 to 33, wherein the antenna is operable to be separated from a metal surface. 3 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。. The antenna of any one of the preceding claims, wherein the antenna is used as part of a radio frequency tracking tag. 27 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。. The antenna of any one of the claims, wherein the antenna is square in shape. 39. A multi-frequency antenna comprising: a ground layer; a conductive layer; and f „ a dielectric layer is disposed between the ground layer and the conductive layer, wherein the antenna has a first An antenna portion capable of operating at a first operating frequency and a second antenna portion capable of operating at a second operating frequency. 40. The antenna of claim 39, wherein The first frequency is different from the second frequency. The antenna of claim 39 or 40, wherein the second antenna portion constitutes a portion of the first antenna portion. I. 42. The antenna of any one of the preceding claims, wherein the conductive layer is electrically connected to the ground layer. The antenna of claim 42 wherein the conductive layer is The antenna according to any one of claims 39 to 43 further comprising: a capacitor member connected to the conductive layer at a feed point edge 45. If you apply for the scope of patents An antenna, wherein the capacitor member comprises a plurality of capacitors. 28 200832813 Several antennas as claimed in claim 45, wherein the plurality of capacitors are equidistant along the edge of the /, Millennium, 4? U Placed at intervals. Foraging f彳(5) The antenna described in Section 45 or 46 of Fanyuan, where the number of capacitors of the capacitors is &amp; T忑, and 兮笠# 夕—constituting the first antenna portion At least one of the first and the first capacitors constitute a part of the first antenna portion of the first antenna portion. 48. If the patented patent line, wherein the $ + ~ "dry brothers 44 to 47 of any one of the items The day: 9 is connected to the grounding layer by the component. The component is connected to the antenna according to 48th, and the capacitor is 5〇-" Stratum. Method, the distance between the first and the second elongated recess of the antenna of the patent range 1 to 38, /, when the first and the second elongated recess are The distance between the second green, such as the gamma dust recess, is increased by 5 antenna σ 卩. 51. A method for harmonizing patent application Nos. 1 to 38, comprising: an antenna of one of the kings: a whole = a width of the first and the second elongated recess, wherein the first and the second Long concave two? Part of the operating frequency is reduced. "In the case of overtime, the first party, /2. - the lesser method of the patent range from 1 to 38, which includes ······························· The length of the concave portion, &quot;the first and the second long recess are reversed, and the operating frequency of the second antenna portion of the 29th 200832813 is lowered. 53. An antenna as described above and with reference to any of Figures 3 and 4. Η•1, schema: as the next page 30