TW200901565A - Dual-polarized, multiple strip-loop antenna, and associated methodology, for radio device - Google Patents

Abstract

A dual-polarized antenna, and an associated methodology, is provided for a radio device, such as a mobile station. The antenna is formed of a plurality of loop strips disposed upon a substrate. The loop strips are configured into a pair of L-cornered loops, with the loops sharing a shared set of loop strips. A loop strip of the shared set provides a single feed connection, positioned to permit symmetrical excitation of the antenna.

Description

200901565 IX. INSTRUCTIONS: [Technical Field of the Invention] The present invention generally relates to a portable ΤΛ/ΓΟ/^, green electric device (for example, operating in the MS (Industrial 'Medical & Scientific) band) Antenna for Bluetooth capability or IEEE 802.1 1 capable device). The present invention is a bipolar antenna and associated square line method capable of being positioned inside the line of the portable radio device and having a tight structure. An L-angle antenna loop formed by a loop strip line is disposed on a substrate (the loop strips extend in a -polar direction or a second polarity ^, the second polarity direction is The first polarity directions are orthogonal. The sizes of the circuit strips are connected to each other to resonate in the orthogonal polarity direction to the IMS or other selected frequency band. [Prior Art] Radio communication systems are often used in modern society. Communication. Many of the changing communication services (both voice communication services and data communication services) are generally implemented by radio communication systems. Moreover, technological advances have made it possible to increase the types of communication services that can be implemented by radio communication systems. The communication system is an example of a radio communication system used at a high level. The cellular communication system is generally constructed to provide coverage of a wider area, and its infrastructure equipment has been installed in an important part of the global residential area. Wireless device, a radio transceiver (sometimes referred to as a mobile station or user equipment (UE)) and a radio The communication system is used for communication. It is generally provided in accordance with the purchase of a subscription (in a round (for example, once a month) manner or in a prepaid, time-based manner) 130612.doc 200901565 ' - Honeycomb communication system The cellular communication system, which can operate in accordance with * operating standards, is defined in different frequency bands (for example, in the Lions band, in the _ MHz band, and in the band between -7 and 2.2 GHz) Radio air interface. Other types of radio communication systems are also widely used, for example, based on blue bud (plus) and IEEE 802.U based systems, which are implemented as (for example, 1 WLAN (wireless area network) system, which is generally Voice and data communication (in a smaller coverage area than the cellular communication system) is also provided. WLAN is generally used as a private network, which uses Bluetooth-enabled or 802.11-capable wireless devices. The ability to communicate over such networks is available to users who can access such networks. WLANs are sometimes configured to connect to a public network, such as the Internet. And further connect to other communication networks, such as PSTN (Public Switched Telephone Network) and pLMN (Public Mobile Network). Sometimes interactive working entities are provided to provide a small area network and a PLMN. Direct connection. ± Various systems are implemented in the 2 frequency band. f } KJ radio communication systems are generally limited by bandwidth. That is, the bandwidth allocation for their operation is limited. Moreover, such limited bandwidth allocation is for this communication. Limitations on the communication capabilities of the system. We have made great efforts and attention to the way in which the allocation of high efficiency is used in the limited bandwidth of the system limited by bandwidth. Sometimes bipolar communication technology is used. In technology, data transmitted at the same frequency is conveyed in separate polar planes. By using bipolar technology, communication capabilities can be nearly doubled. In order to convert the signal energy according to a bipolar scheme, the wireless device needs to use a polar antenna that can operate in the polarity plane separated by 130612.doc 200901565 and operate on the $ & ω τ. The use of bipolar technology is advantageous because the combination of a ship and a share reduces the effects of multipath transmission and other interference, thereby improving the quality of signal transmission and reception.

Bipolar antennas can be implemented by their two orthogonal edge feed-square patch antennas - edge feed or - probe feed. In general, existing bipolar patch antennas are used in conjunction with two feed network circuits. Such existing antennas have problems due to money restrictions. For example, the separation distance between the feed connections needs to be large enough to prevent the occurrence of facets between the individual feed lines. Excessive amounts of wear and tear result in higher cross-polarity levels. As wireless devices have smaller and smaller sizes and are packaged in smaller and smaller sizes, the problems associated with undesired transactions may become more and more apparent. An improved bipolar antenna that needs to be constructed in one way to reduce such deleterious problems. In view of this prior art information relating to antennas for radios, significant improvements in the present invention have been developed. SUMMARY OF THE INVENTION Accordingly, the present invention advantageously provides an antenna for a portable radio device, such as one that is compatible with Bluetooth or 802.1 1 in an IMS (Industrial, Medical, and Scientific) band operation. Equipment and related methods. A bipolar antenna having a compact configuration is provided by operation of one embodiment of the present invention. The antenna can be positioned at or within the radio housing of one of the portable radios. In one aspect of the invention, the antenna is formed by a loop strip etched onto the substrate, which is configured to resonate in a selected frequency band, such as 130612.doc 200901565 in one of the 2.47 GHz bands. . The size of the substrate allows it to be positioned along with the loop circuit of the button to a portable radio (9) such as one that operates in a Bluetooth compatible or 802 11 compatible system. Inside the enclosure of the device). The signal energy is bivariate in orthogonal or other directions. The antenna converts the converted signal month b generated at the wireless device into an electromagnetic form and propagates from the antenna in the polarity direction. Moreover, the electromagnetic energy that is transmitted to the wireless device in the polar directions is converted to an electrical form for subsequent knowledge by the circuitry of the radio device. In another aspect of the invention, the first group of routing lanes etched onto the substrate are configured to form a -L angular antenna loop. The [angular circuit is formed by configuring adjacent loop strips such that the ends of the adjacent loop strips are substantially perpendicular and at right angles. Therefore, the circuit strips of the first group thus configured are positioned in various manners to extend in a first polarity direction or a second polarity direction, the second polarity direction being positive with the first polarity direction cross. In another aspect of the invention, etching to a second group of lane lines on the substrate defines - a second [Shaw-like loop. The adjacent loops of the loops are connected at their ends to a substantially vertical angle, which is straight _° and the 'each loop strip thus configured is in a variety of ways at a first polarity A _ The direction or a second polarity direction (orthogonal to a first polarity direction) is 彳Φ. The signal energy is also converted by the second loop in the two polarity directions. In the other aspect of the month, the first group and the second group return 1306l2.doc 200901565 road: the line includes - the shared shopping belt line set, that is, the first group disk the second = The common circuit has a line. The shared set of loop strips forms part of the loop and part of the second antenna loop. At least one strip line of the loop line of the common collector circuit in the first polarity direction shares at least one strip line of the loop in the direction of the second polarity = and more specifically, the common set is included in the At least two loop strip lines extending in a polarity direction and a > one loop strip line extending in the second polarity direction. In the 兮 一 Γ 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 之一In the m-like embodiment of the present invention, a single-bead connection is provided for the two polarity directions to form or otherwise define a loop line of the common set. The feed connection is positioned to allow symmetric excitation of the two day. By using this single feed connection, the problem of v and polarity is reduced. Therefore, a high gain, high efficiency and compact bipolar antenna is provided. Therefore, in this and other aspects, an antenna device for a radio device and a related method are provided. A substrate is provided. A circuit strip of a first group is disposed on the substrate. The first group of loop strips are configured to form a first loop having at least one loop strip line extending in a -first polarity direction and at least a loop strip line extending in a second polarity direction. The second group of loop strips are arranged on the substrate. The circuit strips of the second group are configured to form a 1306l2.doc -10- having at least one strip line extending in the first polarity direction and at least one strip line extending in the second polarity direction 200901565 Second circuit. The circuit strips of the first and second groups each have a loop strip extending in the first and second directions, respectively, and exhibit bipolar operation. [Embodiment] Therefore, looking at Figure 1, a radio communication system (generally shown as 1) is provided with a mobile station! 2 communication. In an exemplary embodiment, the mobile station operates in accordance with the Bluetooth Standard or the IEEE 8〇2"i(8) or (g) standard, which is operable to transmit and receive signals in the 2.4 GHz band. More generally, the mobile station 12 represents any of a variety of wireless devices, and the radio communication system represents any of a variety of radios that can operate in accordance with any standard of various communication standards or with the permission to operate in an unregulated frequency band. Communication Systems. So 'although the following instructions will explain one with blue shoots or! An exemplary operation of the 802.11 phase system (which may operate in the 4 4 band) is omitted, but it should be understood that the following description is merely exemplary, and the description of the operation of the radio communication system that can be operated in another manner is similar. The radio communication system includes a network portion, which is represented herein as a network port. The network station includes, for example, a point of access to a WLAN or a signal transmitted by a line device (e.g., mobile station 12). - Similar entities. The network port (eight forms an access point here) is a part of a regional network structure. The network structure (machine listening) 16 is coupled to an external network (in this case, a public packet data network) Road (pDN) i 8, such as the Internet). A y 及 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Thus, the bipolar pass 130612.doc 200901565 is provided. The mobile station 12 includes a transceiver circuit, shown here as a receive (RX) portion 26 and a transmit (TX) portion 28. The receive and transmit portions are coupled, for example, by an antenna coupler or other entity that provides isolation between the transceiver portions in accordance with an antenna 32 in accordance with an embodiment of the present invention. The transceiver circuit is capable of bipolar operation. That is, the transmitting and receiving sections are capable of generating signals for transmission in the two polar directions and also operating signals transmitted to the mobile station in the two polar directions. Correspondingly, the antenna 32 forms a bipolar system capable of converting the signal energy in the two polar directions. That is, the signal energy is detected by the antenna in the two bipolar directions. Moreover, the signal energy generated from the mobile station is converted into an electric (four) equation and is conditioned on the two bipolar squares =. In the exemplary embodiment, the antenna 32 is disposed on a substrate that is generally planar - the size of the substrate allows it to be positioned on the mobile station

It starts to resonate in a desired frequency band (here, the 2.4 GHz band).

130612.doc A loop line with a first group 46 and a rectangular loop structure. The adjacent loops •12· 200901565 road strips are intersected at substantially vertical angles and are also in the form of 46 and 48, and (4) roads. These groups have vertical up Γ lines with lines, due to adjacent loops.

Horny. Therefore, the angles of the loops are L-shaped, that is, the L and the loops are included.

Si; 隼: The loops of the collection are shared between the groups. That is, Uf (4) and (4) form part of the group 4 performance 48. In the exemplary embodiment, and as shown, the common end-to-end connection includes three loops with two corners/ports including L-angled portions. Figure 2 illustrates references 54, 56, 58, 6 and the like... 58, 6〇, 62, 64, 66 and 68. Here, at every point of the search point, 4, , · 肜 - the angle of the L shape of the loop. Since the adjacent loops of the adjacent loops are substantially perpendicular to each other, the strip lines extend in one of the two polar directions and the u strip lines are upward. The polar directions are orthogonal and are defined by (4) and 74. The shaft 74 defines a first polarity direction and the axis 72 defines a second polarity direction. The loop strips extending between the reference (four) and ^, between the reference points 6G and 58 between the reference points 62 and 68 and the reference point (four) 56 extend in the first polarity direction. Extending between reference points 5 4 and 5 6 , extending between reference points 56 and 58 , extending between reference points 64 and 62 , extending between reference points 62 and 60 , and reference point 66_ The loop strips between the two extend in the second polarity direction. In the exemplary embodiment, and as shown, one of the rectangular perimeters defined by the loop strips is defined to have the same outer perimeter. In addition, the defined loop strips of points 54 to 56, 66 to 72 and Γ are also corresponding lengths. And in the case of a phased embodiment, the width of each of the loop strips is 130612.doc 200901565 which is the same width W. The antenna 32 includes a single-feed connection 82 for providing a feed connection point, which is connectable, and the transceiver circuit (4) shown in the mobile station (shown in the figure) does not indicate that the early-feed connection provides a feed (as shown in the figure). Illustrated and positioned at the loops of the loop strips 66-68, a symmetric excitation of the loop formed by the loop strips of the groups (10) and 48 is provided. Since only one single feed connection is required, the need to eliminate the need for multiple feed connections is eliminated.

The geometric configuration of the exemplary embodiment of antenna 32 of Figure 2 provides three in-phase parallel strip lines in each of the polar directions 72 and 74. The strip lines 54 to 58, 66 to 68, and 64 to 60 extend in the second polarity direction. And the parallel strip line extending to the first polarity direction "to ... avoids the money ^ to 66/68 to 62 allows the antenna to exhibit both high gain and high efficiency. λ two groups, and the circuit bands of 46 and 48 The line name is engraved on a printed circuit board or other substrate. The 1st loop strip line is considered to be a combination of a plurality of L-shaped rectangular loop strips having two electrical connections of a common common strip line set. In the scheme, the antenna step includes a metal reflector 84 disposed in the strip loop aperture plane (here disposed under one of the bottom surfaces of the substrate 44). By configuring the loop strips to be Bipolar radiation is achieved parallel to the direction of one of the axes of the shaft 72 or 74. The feed connection 82 located in the loop strip "to (10) provides symmetric excitation to reduce the cross polarity level of the bipolar components . A loop strip line extending in each of the polar directions is configured to provide a three-element array of one of the high gain levels in phase 130612.doc • 14- 200901565. The direction of current (i.e., charge flow) during operation of the antenna is reversed to a half wavelength interval due to the standing wave distribution along the lines. In addition, each side of the outer perimeter loop is equally divided into three sections to produce an in-phase current distribution across all of the strip sections with appropriate selection of the length of the perimeter loop. 3 illustrates a graph representation 92 illustrating graphs 94 and 96 representing simulated and measured return losses plotted in relation to frequency, respectively. In an exemplary embodiment, the antenna is resonant at 24 frequencies ('band' and the graphs indicate this. Figure 4 also illustrates an antenna 32 of an exemplary embodiment of the present invention. The resonant frequency of 2 · 4 7 G Η ζ exhibits a simulated current distribution. The antenna header represents the current in the antenna. The analysis of the current distribution indicates that the current distribution is parallel to the polarity axis 72 shown in Figure 2 and In the direction of 74. Figures 5 and 6 respectively illustrate the two-dimensional radiation pattern of the simulation and measurement of the antenna 32 of one embodiment of the present invention at its resonant frequency of 2.47 GHz. The representations of the zero and ninety degrees planes 102 and 104. Figure 7 illustrates a plot of the simulated gain as a function of frequency exhibited by antenna 32 in one embodiment of the present invention. Centered at or near the 2,47 GHz resonant frequency. Figure 8 illustrates a method flow diagram, generally indicated at 112, which represents a method of operation of the present invention - a method for converting - radio equipment Signal energy at '130612.(1, 200901565 First J. As step 114 does not, the loop circuit of the _ group is arranged on the substrate. The loop of the first group is configured Forming and having at least one strip line extending in the -polar-polar direction and at least one strip line extending in a second pole; a _loop of the strip line, as shown in step 116, - the second group a circuit strip line is disposed on the substrate. The second group of loop strip lines are configured to form at least a strip line extending in the first polarity direction and at least extending in the second polarity direction a second loop of one of the strips. Once the loop strips are formed on the substrate, they are used to convert/cut the loop lines in the first and second groups in the first polarity direction And a signal energy having polarity in the direction of the second polarity, thereby providing a dart bipolar antenna having a compact size by using a loop strip disposed on a substrate (which is configured to allow use of a military one) Feed the connection to symmetrically excite the pure w line) to eliminate Problems associated with multiple feed connections used in a bipolar antenna. / 1 [Simplified Schematic Description] = A functional block diagram of one of the embodiments of the present invention can be made in (4). FIG. 2 illustrates one of the present inventions and one of the embodiments of the bipolar multi-strip circuit of the body embodiment. FIG. 3 illustrates the display and the formation of a haircut. FIG. 4 illustrates a graph of the present invention, which is a graph of the frequency of the antenna of the device, and the measured return loss. - An example of the actual eight-depth 130612.doc •16· 200901565 One of the simulated current distributions. Figure 5 illustrates a graph representation of a simulated radiation pattern of an antenna of one of the embodiments of the present invention at so GHz. Figure 6 illustrates a graph similar to that shown in Figure 5 but which is a graph of the measured radiation pattern exhibited by the antenna at 2.47 GHz by the embodiment of the present invention.

Figure 7 illustrates a graph representation of one of the gains obtained from the simulation of the antenna as a function of one embodiment of the present invention. Figure 8 illustrates an operational flow diagram representative of one embodiment of the present invention. square

[Major component symbol description] 10 12 14 16 18 26 32 42 Radiocommunication system mobile station/radio network station regional network structure (WLAN) public packet data network (pdn) reception (RX) partial transmission (TX) part Antenna/antenna equipment loop with line substrate 46 48 First group of loop strips The first group of loop strips share the loop strip set 130612.doc 52 200901565 54 , 56 , 58 , 60 , 62 , 64 ' 66 And 68 82 84 reference point single feed connection metal reflector

130612.doc -18-

Claims (1)

200901565 X. Application for Patent Park: 1. A device for radio equipment: antenna device (32) The antenna device (32) one ()' has a top and bottom opposite surface;; the first group (46) Loop line (42), its arrangement The circuit strips of the 'the first group (46) on the top surface are formed into at least one i-line extending in the -first direction (74) and one of the orthogonal to the first direction a first loop of at least one strip extending in a second direction (72); a loop strip (42) of a second group (48) disposed on the top surface of the substrate (44) The loop strips of the two groups (48) are configured to form - having at least one strip line extending in the first direction (74) and at least one strip line extending in the second direction (72) In the second loop, the first group (46) and the second group (48) each have a strip line (42) extending in the first (74) and second (72) directions respectively to exhibit bipolarity. ;as well as Wherein the bottom surface of the substrate does not have a conductive plane. 2. The antenna device (32) of claim 1, wherein the loops of the first group are configured such that the first loop (46) comprises a first L-shaped loop. 3. The antenna device (32) of claim 1, wherein the adjacent strips of the strips of the first group (46) are substantially at right angles to each other. 4. The antenna device (32) of claim 1, wherein the loops of the second group are configured such that the second loop (48) comprises a second L-shaped loop. 5. The antenna device (32) of claim 4, wherein the adjacent strip lines of the strip lines I306I2.doc 200901565 of the second group intersect at substantially right angles to each other. 6. The antenna device (32) of claim 1, wherein the loop strip of the first group (46) and the loop strip of the second group (48) comprise a common loop strip set (52). 7. The antenna device (32) of claim 6, wherein the common set (52) comprises at least one loop strip extending in the first direction (74) and at least extending in the second direction (72) One loop with a line. 8. The antenna device (32) of claim 7, wherein at least one of the loop strips of the common loop strip line set (52) extending in the first direction (74) is included in the first direction (74) One of the upper extensions is connected to the loop. 9. The antenna device (32) of claim 8, wherein the loop strips of the shared set (52) are by the at least one loop of the common set (52) extending in the second direction (72) Take the line to connect. 10. The antenna device (32) of claim 9, further comprising a single feed connection (82) formed at the at least one loop strip line of the common set (52) extending in the second direction (72) . i ' ^ 11. The antenna device (32) of claim 1, further comprising a loop formed at a loop line of at least one of the first group (46) and the second group (48) A single feed connection (82) is configured to 'implement symmetric excitation of both the first group (46) and the second group (48). 12. The antenna device (32) of claim 1, wherein the loop strip of the first group (46) and the loop strip of the second group (48) are configured to resonate in a 2.4 GHz band . 130612.doc 200901565 13. 14. The bipolar antenna device (10) of claim 1, wherein the first loop forms a first L angular antenna loop and the second loop forms a second L angular antenna loop, The first and second L-angle antenna loops are configured to resonate in an ISM, the band of industrial science and medicine. A method (112) for converting signal energy from a radio device (12), the method comprising the steps of: arranging (114) a loop of a first group (46) on a substrate (4 sentences) On the top surface, the substrate (44) has top and bottom opposite surfaces. The bottom surface of the substrate does not have a conductive plane, and the loop strips of the first group (46) are configured to form a a first loop having at least one strip line extending (52) in a first direction (74) and at least one strip line extending in a second direction (72) of the first direction of the first direction; A loop strip arrangement (114) of the group (48) is on the top surface of the substrate (44), and the loop strips of the second group (48) are configured to form a first a second loop extending at least in the direction (74) and at least one strip extending in the second direction (72); and a transition (11 8) from the first direction (7 sentences) The signal energy of the first group (46) of polarity is 'converted (118) from the signal energy of the second group (48) having polarity in the second direction (72). The method (112) further includes the operation of supplying signal energy to the single feed connection (82), the single feed The connection (82) is formed by at least one loop strip extending from the common set (52) in the second direction (72). 130612.doc 200901565 - 16. The method (112) of claim 13 Further comprising the operation of symmetrically exciting the first (46) and second (48) groups of the loop strips by signal energy. 130612.doc