WO2011101534A1 - Antenna provided with cover radiator - Google Patents

Antenna provided with cover radiator Download PDF

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Publication number
WO2011101534A1
WO2011101534A1 PCT/FI2011/050102 FI2011050102W WO2011101534A1 WO 2011101534 A1 WO2011101534 A1 WO 2011101534A1 FI 2011050102 W FI2011050102 W FI 2011050102W WO 2011101534 A1 WO2011101534 A1 WO 2011101534A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
radiator
cover
radio device
resonance
Prior art date
Application number
PCT/FI2011/050102
Other languages
French (fr)
Inventor
Heikki Korva
Original Assignee
Pulse Finland Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pulse Finland Oy filed Critical Pulse Finland Oy
Priority to US13/579,559 priority Critical patent/US9246210B2/en
Priority to CN201180010031.XA priority patent/CN102834966B/en
Publication of WO2011101534A1 publication Critical patent/WO2011101534A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/378—Combination of fed elements with parasitic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
    • H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Definitions

  • the invention relates to a monopole antenna, the radiator of which follows by shape the outer cover of a device, the antenna being applicable especially to small mobile stations.
  • small-sized radio devices such as mobile phones
  • the pursuit of space saving is a lasting factor when designing a device.
  • the antenna i.a. using a dielectric substrate for the radiator
  • using a monopole radiator instead of PI FA (Planar Inverted-F Antenna) and the above-mentioned implementation of the radiator in outer cover of the radio device are solutions which save space.
  • Making the radiator as a part of the device's outer cover is known as such.
  • An example of such an arrangement is the solution for the antenna of a radio device shown in Fig. 1 , known from the publication EP 1 439 603.
  • the upper part 130 of the rear part of the device's outer cover is of conductive material and functions as the radiator of the antenna.
  • the radiator 130 joins the dielectric rest part 150 of the outer cover without discontinuity.
  • the radiator 130 In the cross section figure there is seen the radiator 130 and below it the circuit board PCB of the device, on the upper surface of which board the ground plane GND of the antenna is located. Between the radiator and ground plane there is a conductive feed element 120 which is separated galvanically from the radiator by a distinct thin dielectric layer DIE.
  • the radiator has no galvanic coupling to any conductive part of the radio device. Instead, the feed element 120 is coupled galvanically to the antenna port of the radio device by the feed conductor 1 16 and to the ground plane by the short-circuit conductor 1 15. An example of the shape of the feed element 120 is visible in the drawing of the radio device.
  • the longer arm of the feed element, the radiator 130 and the ground plane GND constitute a resonator, the natural frequency of which is in the lower operating band
  • the shorter arm of the feed element, the radiator and the ground plane constitute a resonator, the natural frequency of which is in the higher operating band.
  • the use of the separate feed element is favourable, because in that case the places of the antenna's operating bands and the matching of the antenna can be arranged without interfering with the shape of the radiator.
  • a flaw of the solution in Fig. 1 is that good band characteristics and adequate efficiency require a remarkably long distance between the radiator and the ground plane GND. This again means that the need for antenna space is also in this case greater than desirable.
  • the object of the invention is to implement an antenna provided with a cover radiator in a new and advantageous way.
  • An antenna according to the invention is characterized by what is set forth in the independent claim 1 .
  • the radiator of an antenna is trough- like so that the head surface, front and rear surfaces and both side surfaces of the dielectric cover of a device are coated by it at an end of the radio device. On the side of the side surfaces there are slots in the radiator starting from its edge for increasing the electric size.
  • the radiator is fed electromagnetically by a separate element which is shaped so that the antenna has at least two operating bands.
  • the ground plane of the antenna is apart from the radiator, thus not extending inside the 'trough'.
  • An advantage of the invention is that the radiator of an antenna is short in the longitudinal direction of the radio device, and the space required by the antenna in the radio device is thus relatively small. This is due to the trough-like shape of the radiator and the slots on its sides. Thanks to the slots the radiator, which resonates at a certain frequency, becomes smaller. Also the monopole structure, or the location of the ground plane apart from the radiator, results in a smaller size of the radiator. Another advantage of the invention is that several resonances, which can be tuned separately, are provided for the antenna.
  • Fig. 1 presents an example of the antenna according to the prior art, in which the radiator is a part of the cover structure,
  • Fig. 2 presents an example of the radio device provided with an antenna ac- cording to the invention
  • Fig. 3 presents an example of the antenna structure in the radio device according to Fig. 2,
  • Fig. 4 presents an example of the feed element of an antenna according to the invention
  • Fig. 5 presents an example of the band characteristics of the antenna according to the invention.
  • Fig. 6 presents an example of the efficiency of the antenna according to the invention.
  • Fig. 1 was already described in connection with the description of prior art.
  • Fig. 2 shows an example of the radio device provided with an antenna according to the invention.
  • the radio device RD is elongated and relatively flat so that it has two ends, head surfaces corresponding to these ends, front and rear surfaces and first and second side surfaces.
  • the antenna radiator is located at one end of the device which can be the end on the side of the device's speaker or the opposite end.
  • the outer cover of the device which comprises the main part COV of the cover and the antenna cover 332.
  • the antenna cover is of conductive material, for which reason it functions as a part of the radiat- ing structure.
  • the radiator proper is underneath it.
  • the main part COV of the cover is in this example of conductive material, for which reason there is a relatively narrow non-conductive part SPL of the outer cover between it and the antenna cover 332.
  • the antenna cover is trough-like by shape, opening naturally towards the middle part of the radio device.
  • a slot such as the first slot SL3, is on the side of the both side surfaces of the antenna cover, starting from its edge. In the description of Fig. 3 it will be got back to these slots.
  • Fig. 3 shows an example of the structure according to the invention.
  • the antenna of the radio device presented in Fig. 2 is used as the example.
  • the structure com- prises dielectric cover 310, feed element 320, radiator 331 and the above- mentioned antenna cover 332.
  • the antenna cover has been drawn as separate in the figure; in the device it is naturally over the other parts of the antenna structure.
  • the dielectric cover 310 forms the frame of the end of the radio device and, at the same time, the antenna frame. It is trough-like by shape so that it has a bottom, opposite short sides and opposite long sides. The bottom corresponds to the head surface of the whole device, the short sides correspond to the side surfaces of the whole device at the device's end in question and the long sides correspond to the front and rear surfaces of the whole device at the device's end.
  • the radiator 331 On the outer surface of the dielectric cover 310 there is the radiator 331 . This has been implemented by metallizing the outer surface e.g. with the LDS method (Laser Directed Structuring). Therefore also the radiator is trough-like following by shape the head surface, the front and rear surfaces and the side surfaces of the radio device.
  • the areas of the outer surface of the dielectric cover starting from the edges of its short sides are left without metallizing so that on the side of the side surfaces of the radio device there are slots being directed from the edge of the radiator towards its bottom.
  • These slots increase the electric size of the radiator. This results in that the resonance, which corresponds to the lowest operating band of the antenna, can be realized by means of a physically smaller radiator compared to a radiator without said slots.
  • the width of the radio device determines the length of the radiator, in which case the decrease in size means the shortening of the radiator in the longitudinal direction of the device, or in the depth direction of the radiator.
  • the feed element 320 of the radiator On the inner surface of the dielectric cover 310 there is the feed element 320 of the radiator. In the example it extends in the depth direction from the open edge of the dielectric cover to the bottom surface of the cover.
  • the feed element is con- nected to the transmitter and receiver of the radio device from its certain point FP, which is then the feed point of the antenna. Only an electromagnetic coupling exists between the feed element and the radiator.
  • the feed element is shaped so that it has several resonances together with the radiator and ground plane. The operating bands of the dualband antenna are based on these resonances. An ex- ample of this matter is in Figs. 4 and 5.
  • the feed element is connected also to the ground plane of the antenna from its short-circuit point SP.
  • the antenna cover 332 is tightly on the radiator. If the antenna cover is of conductive material, as in this example, the slots have to be also in it on the side of the side surfaces of the device to prevent the short-circuit of the slots SL1 , SL2 of the radiator.
  • the third slot SL3 in the antenna cover is at above- mentioned first slot SL1
  • the fourth slot SL4 is at the second slot SL2.
  • the antenna cover is of steel for the sake of appearance. As conductor, steel is clearly poorer than the metal which is used as the radiator 331 . For this reason an antenna cover made of steel has little significance as a radiator, although it in principle functions as a part of the radiating structure.
  • the antenna cover can also be made of a non-conductive material, in which case it lacks the slots SL3 and SL4 seen in Fig. 3.
  • Fig. 4 shows an example of the feed element of an antenna according to the invention, as spread on a plane. Also the ground plane GND of the antenna is visi- ble in the figure, which ground plane is located beside the feed element and thus also the radiator 431 as viewed in the direction of the normal of the ground plane. The ground plane is parallel with the front and rear surface of the radio device.
  • the first part 421 comprises six successive portions which form a simple spiral pattern: the first portion of the first part starts from the feed point FP and is directed away from the ground plane, that is, towards the bottom of the radiator.
  • the second portion is parallel with the edge of the ground plane, or perpendicular to the first portion.
  • the third portion is directed back towards the ground plane, the fourth portion towards the first portion, the fifth portion towards the second portion and the sixth portion towards the third portion.
  • the tail end TE of the sixth portion there is an extension towards the second portion for strengthening the electromagnetic coupling between said tail end and the second portion.
  • the second part 422 of the feed element 420 is a mainly straight conductor strip between the ground plane GND and the spiral formed by the first part 421 .
  • the second part starts from the feed point FP and ends at the point from which the feed element is connected to the ground plane, or the short-circuit point SP.
  • the third part 423 of the feed element is a continuation of the second part from the short-circuit point SP forward. It has the same direction as the second part and is open at its outer end.
  • the feed element 420 has three significant resonances together with the radiator and ground plane.
  • the lowest frequency resonance, or the first resonance is based on the electric length of the structure constituted by the first 421 and second 422 part of the feed element and the capacitive element between these parts.
  • the higher frequency resonance, or the second resonance is based on the electric length of the conductor constituted by the second 422 and third 423 part. It can be tuned by changing the physical length of the third part.
  • the highest frequency resonance, or the third resonance is a harmonic resonance of the first resonance. It can be tuned by changing said electromagnetic coupling between the second and sixth portions of the first part 421 by shaping the tail end TE of the sixth por- tion.
  • a tuning element 440 is seen in Fig. 4. It is a conductor strip on the inner surface of the dielectric cover, connected to the ground plane from its one end. By means of the tuning element is affected the resonance which the radiator has alone (naturally with the co-operation of the ground plane), which resonance is then the fourth significant resonance of the antenna to be considered.
  • the tuning element can be located, in respect of the feed element, e.g. on the opposite side of the trough formed by the dielectric cover.
  • Fig. 5 shows an example of the band characteristics of an antenna according to the invention.
  • the antenna is like the one presented in the previous figures; the capacitance of the matching capacitor C41 between the feed point and second part of the feed element is 4.7 pF.
  • the curve shows the fluctuation of the reflection coefficient S1 1 of the antenna as the function of frequency. The lower the reflection coefficient, the better the antenna has been matched.
  • the feed element is shaped so that the antenna has two operating bands, the lower and higher one.
  • the lower operating band is based on the above-mentioned first resonance r1 , the frequency of which is about 0.9 GHz.
  • the lower operating band covers the frequency range 880-960 MHz (w1 in the figure) used by the EGSM system (Extended GSM), when the value -5 dB of the reflection coefficient is considered to be the criterion of the boundary frequency of the band.
  • the higher operating band is based on the above-mentioned second, third and fourth resonance.
  • the frequency of the second resonance r2 is about 1 .75 GHz
  • the frequency of the third resonance r3 is about 2.1 GHz
  • the frequency of the fourth resonance r4 is about 2.0 GHz.
  • the higher operating band well covers the frequency range 1710-2170 MHz (w2 in the figure) used by the systems GSM1800, GSM1900 and WCDMA in all.
  • Fig. 6 shows an example of the efficiency of an antenna according to the invention in free space.
  • Curve 61 shows the fluctuation of the efficiency in the lower operating band. In the range w1 the efficiency fluctuates between -1 dB and -3 dB being about -1 .6 dB on average.
  • Curve 62 shows the fluctuation of the efficiency in the higher operating band. In the range w2 the efficiency fluctuates between -0.5 dB and -3.7 dB being about -2.4 dB on average. The values of the efficiency are then very good.
  • An adjustable antenna according to the invention has been described above. In details, its structure can naturally differ from what is presented.
  • the shape of the feed element of the antenna can vary widely.
  • the resonance frequencies of the antenna can be arranged also so that the number of the operating bands is more than two.
  • the feed element can also be located on the surface of a separate thin and flexible dielectric plate which is fastened on the surface of the antenna frame.
  • the antenna frame again can be, besides the same as the dielectric cover of the antenna, also a separate dielectric object to be placed inside the dielectric cover.
  • the tuning element affecting the resonance frequency of the radiator can be lo- cated at different places in the antenna structure.
  • the inventive idea can be applied in different ways within the scope set by the independent claim 1 .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Waveguide Aerials (AREA)
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Abstract

A monopole antenna applicable especially to small mobile stations. The radiator (331) of the antenna is trough-like so that it covers the head surface, front and rear surfaces and both side surfaces of the dielectric cover (310) of the radio device at an end of the device. On the side of the side surfaces there are slots (SL1, SL2) in the radiator starting from its edge for increasing the electric size. The radiator is fed electromagnetically by a separate element (320) which is shaped so that the antenna has at least two operating bands. The ground plane of the antenna is apart from the radiator, thus not extending inside the 'trough'.

Description

Antenna provided with cover radiator
The invention relates to a monopole antenna, the radiator of which follows by shape the outer cover of a device, the antenna being applicable especially to small mobile stations. In small-sized radio devices, such as mobile phones, the pursuit of space saving is a lasting factor when designing a device. Regarding the antenna, i.a. using a dielectric substrate for the radiator, using a monopole radiator instead of PI FA (Planar Inverted-F Antenna) and the above-mentioned implementation of the radiator in outer cover of the radio device are solutions which save space. Making the radiator as a part of the device's outer cover is known as such. An example of such an arrangement is the solution for the antenna of a radio device shown in Fig. 1 , known from the publication EP 1 439 603. There can be seen a radio device from behind and its cross section at the antenna structure. The upper part 130 of the rear part of the device's outer cover is of conductive material and functions as the radiator of the antenna. The radiator 130 joins the dielectric rest part 150 of the outer cover without discontinuity.
In the cross section figure there is seen the radiator 130 and below it the circuit board PCB of the device, on the upper surface of which board the ground plane GND of the antenna is located. Between the radiator and ground plane there is a conductive feed element 120 which is separated galvanically from the radiator by a distinct thin dielectric layer DIE. The radiator has no galvanic coupling to any conductive part of the radio device. Instead, the feed element 120 is coupled galvanically to the antenna port of the radio device by the feed conductor 1 16 and to the ground plane by the short-circuit conductor 1 15. An example of the shape of the feed element 120 is visible in the drawing of the radio device. It is a conductive strip comprising, as viewed from its short-circuit point SP, two arms with different lengths to implement two operating bands for the antenna. The longer arm of the feed element, the radiator 130 and the ground plane GND constitute a resonator, the natural frequency of which is in the lower operating band, and the shorter arm of the feed element, the radiator and the ground plane constitute a resonator, the natural frequency of which is in the higher operating band.
The use of the separate feed element is favourable, because in that case the places of the antenna's operating bands and the matching of the antenna can be arranged without interfering with the shape of the radiator. However, a flaw of the solution in Fig. 1 is that good band characteristics and adequate efficiency require a remarkably long distance between the radiator and the ground plane GND. This again means that the need for antenna space is also in this case greater than desirable. The object of the invention is to implement an antenna provided with a cover radiator in a new and advantageous way. An antenna according to the invention is characterized by what is set forth in the independent claim 1 . Some advantageous embodiments of the invention are disclosed in the other claims.
The basic idea of the invention is as follows: The radiator of an antenna is trough- like so that the head surface, front and rear surfaces and both side surfaces of the dielectric cover of a device are coated by it at an end of the radio device. On the side of the side surfaces there are slots in the radiator starting from its edge for increasing the electric size. The radiator is fed electromagnetically by a separate element which is shaped so that the antenna has at least two operating bands. The ground plane of the antenna is apart from the radiator, thus not extending inside the 'trough'.
An advantage of the invention is that the radiator of an antenna is short in the longitudinal direction of the radio device, and the space required by the antenna in the radio device is thus relatively small. This is due to the trough-like shape of the radiator and the slots on its sides. Thanks to the slots the radiator, which resonates at a certain frequency, becomes smaller. Also the monopole structure, or the location of the ground plane apart from the radiator, results in a smaller size of the radiator. Another advantage of the invention is that several resonances, which can be tuned separately, are provided for the antenna. In the following the invention is described in detail. In the description, reference is made to the accompanying drawings in which
Fig. 1 presents an example of the antenna according to the prior art, in which the radiator is a part of the cover structure,
Fig. 2 presents an example of the radio device provided with an antenna ac- cording to the invention,
Fig. 3 presents an example of the antenna structure in the radio device according to Fig. 2,
Fig. 4 presents an example of the feed element of an antenna according to the invention,
Fig. 5 presents an example of the band characteristics of the antenna according to the invention and
Fig. 6 presents an example of the efficiency of the antenna according to the invention.
Fig. 1 was already described in connection with the description of prior art.
Fig. 2 shows an example of the radio device provided with an antenna according to the invention. The radio device RD is elongated and relatively flat so that it has two ends, head surfaces corresponding to these ends, front and rear surfaces and first and second side surfaces. The antenna radiator is located at one end of the device which can be the end on the side of the device's speaker or the opposite end. In the figure is seen the outer cover of the device which comprises the main part COV of the cover and the antenna cover 332. In this example, the antenna cover is of conductive material, for which reason it functions as a part of the radiat- ing structure. The radiator proper is underneath it. Also the main part COV of the cover is in this example of conductive material, for which reason there is a relatively narrow non-conductive part SPL of the outer cover between it and the antenna cover 332.
The antenna cover is trough-like by shape, opening naturally towards the middle part of the radio device. A slot, such as the first slot SL3, is on the side of the both side surfaces of the antenna cover, starting from its edge. In the description of Fig. 3 it will be got back to these slots.
Fig. 3 shows an example of the structure according to the invention. The antenna of the radio device presented in Fig. 2 is used as the example. The structure com- prises dielectric cover 310, feed element 320, radiator 331 and the above- mentioned antenna cover 332. For the sake of clarity, the antenna cover has been drawn as separate in the figure; in the device it is naturally over the other parts of the antenna structure.
The dielectric cover 310 forms the frame of the end of the radio device and, at the same time, the antenna frame. It is trough-like by shape so that it has a bottom, opposite short sides and opposite long sides. The bottom corresponds to the head surface of the whole device, the short sides correspond to the side surfaces of the whole device at the device's end in question and the long sides correspond to the front and rear surfaces of the whole device at the device's end. On the outer surface of the dielectric cover 310 there is the radiator 331 . This has been implemented by metallizing the outer surface e.g. with the LDS method (Laser Directed Structuring). Therefore also the radiator is trough-like following by shape the head surface, the front and rear surfaces and the side surfaces of the radio device. The areas of the outer surface of the dielectric cover starting from the edges of its short sides are left without metallizing so that on the side of the side surfaces of the radio device there are slots being directed from the edge of the radiator towards its bottom. On the side of the first side surface there is the first slot SL1 and on the side of the second side surface there is the second slot SL2. These slots increase the electric size of the radiator. This results in that the resonance, which corresponds to the lowest operating band of the antenna, can be realized by means of a physically smaller radiator compared to a radiator without said slots. The width of the radio device determines the length of the radiator, in which case the decrease in size means the shortening of the radiator in the longitudinal direction of the device, or in the depth direction of the radiator.
On the inner surface of the dielectric cover 310 there is the feed element 320 of the radiator. In the example it extends in the depth direction from the open edge of the dielectric cover to the bottom surface of the cover. The feed element is con- nected to the transmitter and receiver of the radio device from its certain point FP, which is then the feed point of the antenna. Only an electromagnetic coupling exists between the feed element and the radiator. The feed element is shaped so that it has several resonances together with the radiator and ground plane. The operating bands of the dualband antenna are based on these resonances. An ex- ample of this matter is in Figs. 4 and 5. The feed element is connected also to the ground plane of the antenna from its short-circuit point SP.
In the finished structure the antenna cover 332 is tightly on the radiator. If the antenna cover is of conductive material, as in this example, the slots have to be also in it on the side of the side surfaces of the device to prevent the short-circuit of the slots SL1 , SL2 of the radiator. The third slot SL3 in the antenna cover is at above- mentioned first slot SL1 , and the fourth slot SL4 is at the second slot SL2. If the device has a steel cover, also the antenna cover is of steel for the sake of appearance. As conductor, steel is clearly poorer than the metal which is used as the radiator 331 . For this reason an antenna cover made of steel has little significance as a radiator, although it in principle functions as a part of the radiating structure. The antenna cover can also be made of a non-conductive material, in which case it lacks the slots SL3 and SL4 seen in Fig. 3.
Fig. 4 shows an example of the feed element of an antenna according to the invention, as spread on a plane. Also the ground plane GND of the antenna is visi- ble in the figure, which ground plane is located beside the feed element and thus also the radiator 431 as viewed in the direction of the normal of the ground plane. The ground plane is parallel with the front and rear surface of the radio device.
In the feed element 420 there are its short-circuit point SP and the feed point FP of the whole antenna, and it includes here three parts. The first part 421 comprises six successive portions which form a simple spiral pattern: the first portion of the first part starts from the feed point FP and is directed away from the ground plane, that is, towards the bottom of the radiator. The second portion is parallel with the edge of the ground plane, or perpendicular to the first portion. The third portion is directed back towards the ground plane, the fourth portion towards the first portion, the fifth portion towards the second portion and the sixth portion towards the third portion. In the tail end TE of the sixth portion there is an extension towards the second portion for strengthening the electromagnetic coupling between said tail end and the second portion.
The second part 422 of the feed element 420 is a mainly straight conductor strip between the ground plane GND and the spiral formed by the first part 421 . The second part starts from the feed point FP and ends at the point from which the feed element is connected to the ground plane, or the short-circuit point SP. In the example of Fig. 4 there is a capacitive element C41 between the feed point and the starting end of the second part. By means of the capacitance the antenna matching in the lower operating band is improved so that this band widens a little.
The third part 423 of the feed element is a continuation of the second part from the short-circuit point SP forward. It has the same direction as the second part and is open at its outer end.
The feed element 420 has three significant resonances together with the radiator and ground plane. The lowest frequency resonance, or the first resonance, is based on the electric length of the structure constituted by the first 421 and second 422 part of the feed element and the capacitive element between these parts. The higher frequency resonance, or the second resonance, is based on the electric length of the conductor constituted by the second 422 and third 423 part. It can be tuned by changing the physical length of the third part. The highest frequency resonance, or the third resonance, is a harmonic resonance of the first resonance. It can be tuned by changing said electromagnetic coupling between the second and sixth portions of the first part 421 by shaping the tail end TE of the sixth por- tion.
Also a tuning element 440 is seen in Fig. 4. It is a conductor strip on the inner surface of the dielectric cover, connected to the ground plane from its one end. By means of the tuning element is affected the resonance which the radiator has alone (naturally with the co-operation of the ground plane), which resonance is then the fourth significant resonance of the antenna to be considered. The tuning element can be located, in respect of the feed element, e.g. on the opposite side of the trough formed by the dielectric cover.
Fig. 5 shows an example of the band characteristics of an antenna according to the invention. The antenna is like the one presented in the previous figures; the capacitance of the matching capacitor C41 between the feed point and second part of the feed element is 4.7 pF. The curve shows the fluctuation of the reflection coefficient S1 1 of the antenna as the function of frequency. The lower the reflection coefficient, the better the antenna has been matched. The feed element is shaped so that the antenna has two operating bands, the lower and higher one. The lower operating band is based on the above-mentioned first resonance r1 , the frequency of which is about 0.9 GHz. It is seen from the curve that the lower operating band covers the frequency range 880-960 MHz (w1 in the figure) used by the EGSM system (Extended GSM), when the value -5 dB of the reflection coefficient is considered to be the criterion of the boundary frequency of the band. The higher operating band is based on the above-mentioned second, third and fourth resonance. The frequency of the second resonance r2 is about 1 .75 GHz, the frequency of the third resonance r3 is about 2.1 GHz and the frequency of the fourth resonance r4 is about 2.0 GHz. It is seen from the curve that the higher operating band well covers the frequency range 1710-2170 MHz (w2 in the figure) used by the systems GSM1800, GSM1900 and WCDMA in all. The fourth resonance is tuned between the second and third resonances on the frequency scale, by which means the reflection coefficient can be kept low in the whole large operating band. Without the fourth resonance the antenna matching would be poor in the middle range of the band. Fig. 6 shows an example of the efficiency of an antenna according to the invention in free space. Curve 61 shows the fluctuation of the efficiency in the lower operating band. In the range w1 the efficiency fluctuates between -1 dB and -3 dB being about -1 .6 dB on average. Curve 62 shows the fluctuation of the efficiency in the higher operating band. In the range w2 the efficiency fluctuates between -0.5 dB and -3.7 dB being about -2.4 dB on average. The values of the efficiency are then very good.
An adjustable antenna according to the invention has been described above. In details, its structure can naturally differ from what is presented. The shape of the feed element of the antenna can vary widely. The resonance frequencies of the antenna can be arranged also so that the number of the operating bands is more than two. The feed element can also be located on the surface of a separate thin and flexible dielectric plate which is fastened on the surface of the antenna frame. The antenna frame again can be, besides the same as the dielectric cover of the antenna, also a separate dielectric object to be placed inside the dielectric cover. The tuning element affecting the resonance frequency of the radiator can be lo- cated at different places in the antenna structure. The inventive idea can be applied in different ways within the scope set by the independent claim 1 .

Claims

Claims
1 . An antenna of a radio device with a front and rear surface, first and second head surface and first and second side surface, which antenna comprises a radiator (331 ) being a part of a cover structure of the radio device, a feed element (320; 420), which has only an electromagnetic coupling to the radiator, and a ground plane (GND), which is located beside the radiator as viewed in the direction of the normal of the front and rear surface of the radio device, and which antenna has at least a lower and higher operating band, characterized in that the radiator (331 ) is located at the end of the radio device (RD) and is of conductor coating of a dielec- trie cover (310) of the radio device, which dielectric cover is trough-like by shape so that its bottom corresponds to the head surface of the radio device, and there is an antenna cover (332) on the radiator, which antenna cover is a part of outer cover of the radio device, and in the radiator, on the side of the first and second side surface, there is a slot (SL1 , SL2) starting from its edge to increase the elec- trie size of the radiator, or to decrease its physical size at the frequencies of the lower operating band of the antenna.
2. An antenna according to claim 1 , characterized in that in said feed element there is a feed point (FP) to be coupled with a transmitter and receiver of the radio device and a short-circuit point (SP) connected to the ground plane (GND), and the feed element has, together with the radiator and ground plane, a resonance to which the antenna's lower operating band is based and at least one resonance to which the antenna's higher operating band is based.
3. An antenna according to claim 2, characterized in that the feed element (420) comprises a first part (421 ) starting from the feed point (FP) and forming a simple spiral pattern, a second part (422) starting from the feed point (FP) and ending at the short-circuit point (SP), the second part being between the first part and the ground plane, and a third part (423) starting from the short-circuit point and being open at its outer end, in which case the resonance establishing the lower operating band, or the first resonance, is based on the electric length of a structure formed by the first and second part of the feed element, and the resonances establishing the higher operating band are based on the electric length of a conductor formed by the second and third part and on a harmonic resonance of the first resonance.
4. An antenna according to claim 2, characterized in that there is a capacitive element (C41 ) between the feed point (FP) and the starting end of the second part (422) to improve the antenna matching in the lower operating band.
5. An antenna according to claim 1 , characterized in that it further comprises a tuning element (440) connected to the ground plane (GND) from its one end to shift the frequency of the resonance, which the radiator has with the ground plane, to a desired point.
6. An antenna according to claim 1 , characterized in that the feed element (320) is located on the inner surface of said dielectric cover (310).
7. An antenna according to claim 1 , characterized in that said antenna cover (332) is of conductive material, forming then a part of the radiating structure.
8. An antenna according to claim 1 , characterized in that said antenna cover is of non-conductive material.
PCT/FI2011/050102 2010-02-18 2011-02-07 Antenna provided with cover radiator WO2011101534A1 (en)

Priority Applications (2)

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US13/579,559 US9246210B2 (en) 2010-02-18 2011-02-07 Antenna with cover radiator and methods
CN201180010031.XA CN102834966B (en) 2010-02-18 2011-02-07 There is the antenna of cover radiant body

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FI20105158 2010-02-18
FI20105158A FI20105158A (en) 2010-02-18 2010-02-18 SHELL RADIATOR ANTENNA

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2608314A2 (en) 2011-12-20 2013-06-26 Pulse Finland Oy Loosely-coupled radio antenna apparatus and methods
EP2720314A1 (en) * 2012-10-11 2014-04-16 BlackBerry Limited Antenna wrapped around to speaker lid
WO2014147027A1 (en) * 2013-03-20 2014-09-25 Aviwest Antenna formed by at least two radiating strands and a ground plane
US9077074B2 (en) 2012-10-11 2015-07-07 Blackberry Limited Antenna wrapped around to speaker lid

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9716307B2 (en) * 2012-11-08 2017-07-25 Htc Corporation Mobile device and antenna structure
KR102048507B1 (en) * 2013-06-21 2019-11-25 삼성전자주식회사 Antenna device and electronic device habing it
US9979096B2 (en) * 2013-08-20 2018-05-22 Futurewei Technologies, Inc. System and method for a mobile antenna with adjustable resonant frequencies and radiation pattern
CN203466294U (en) * 2013-08-22 2014-03-05 深圳富泰宏精密工业有限公司 Adjustable antenna and wireless communication device therewith
KR102094754B1 (en) 2013-12-03 2020-03-30 엘지전자 주식회사 Mobile terminal
US9948342B2 (en) * 2013-12-12 2018-04-17 Nokia Technologies Oy Speaker casing with integrally formed electrical conductors
US9680223B2 (en) 2014-06-26 2017-06-13 Htc Corporation Mobile device and manufacturing method thereof
KR102258191B1 (en) * 2014-11-13 2021-05-28 삼성전자주식회사 Electronic device
CN204391262U (en) * 2015-01-20 2015-06-10 瑞声精密制造科技(常州)有限公司 Anneta module
US20160233915A1 (en) * 2015-02-10 2016-08-11 Mediatek Inc. Communication device and electronic device
US10277287B2 (en) 2015-04-29 2019-04-30 Mediatek Inc. Antenna system and harmonic suppression element
USD791105S1 (en) * 2015-05-22 2017-07-04 Kathrein-Werke Kg Antenna
CN105576371A (en) * 2016-02-29 2016-05-11 广东小天才科技有限公司 Mobile terminal and antenna grounding structure thereof
US10243279B2 (en) 2016-02-29 2019-03-26 Microsoft Technology Licensing, Llc Slot antenna with radiator element
KR102466002B1 (en) * 2016-04-19 2022-11-11 삼성전자주식회사 Electronic device including antenna
USD837790S1 (en) * 2016-08-03 2019-01-08 Transcend Information, Inc. Mobile storage device
KR102296158B1 (en) * 2017-03-28 2021-08-31 삼성전자주식회사 Multi feeding antenna and electronic device having the same
CN110622355B (en) * 2017-05-30 2022-02-11 莱森西斯澳大利亚私人有限公司 Antenna with a shield
CN112968270B (en) * 2019-12-13 2022-09-23 华为技术有限公司 Dual-frequency antenna and communication equipment
USD966188S1 (en) * 2021-04-20 2022-10-11 Scx Design Rechargeable bank

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1439601A1 (en) * 2003-01-15 2004-07-21 Filtronic LK Oy Internal multiband antenna
WO2005034286A1 (en) * 2003-10-09 2005-04-14 Lk Products Oy Cover structure for a radio device
WO2008059106A1 (en) * 2006-11-15 2008-05-22 Pulse Finland Oy Internal multi-band antenna
WO2010122220A1 (en) * 2009-04-22 2010-10-28 Pulse Finland Oy Internal monopole antenna

Family Cites Families (525)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745102A (en) 1945-12-14 1956-05-08 Norgorden Oscar Antenna
US4004228A (en) 1974-04-29 1977-01-18 Integrated Electronics, Ltd. Portable transmitter
DE2538614C3 (en) 1974-09-06 1979-08-02 Murata Manufacturing Co., Ltd., Nagaokakyo, Kyoto (Japan) Dielectric resonator
US3938161A (en) 1974-10-03 1976-02-10 Ball Brothers Research Corporation Microstrip antenna structure
US4054874A (en) 1975-06-11 1977-10-18 Hughes Aircraft Company Microstrip-dipole antenna elements and arrays thereof
US4123758A (en) 1976-02-27 1978-10-31 Sumitomo Electric Industries, Ltd. Disc antenna
US4031468A (en) 1976-05-04 1977-06-21 Reach Electronics, Inc. Receiver mount
JPS583405B2 (en) 1976-09-24 1983-01-21 日本電気株式会社 Antenna for small radio equipment
US4069483A (en) 1976-11-10 1978-01-17 The United States Of America As Represented By The Secretary Of The Navy Coupled fed magnetic microstrip dipole antenna
US4131893A (en) 1977-04-01 1978-12-26 Ball Corporation Microstrip radiator with folded resonant cavity
CA1128152A (en) 1978-05-13 1982-07-20 Takuro Sato High frequency filter
US4201960A (en) 1978-05-24 1980-05-06 Motorola, Inc. Method for automatically matching a radio frequency transmitter to an antenna
US4313121A (en) 1980-03-13 1982-01-26 The United States Of America As Represented By The Secretary Of The Army Compact monopole antenna with structured top load
JPS5761313A (en) 1980-09-30 1982-04-13 Matsushita Electric Ind Co Ltd Band-pass filter for ultra-high frequency
US4356492A (en) 1981-01-26 1982-10-26 The United States Of America As Represented By The Secretary Of The Navy Multi-band single-feed microstrip antenna system
US4370657A (en) 1981-03-09 1983-01-25 The United States Of America As Represented By The Secretary Of The Navy Electrically end coupled parasitic microstrip antennas
US5053786A (en) 1982-01-28 1991-10-01 General Instrument Corporation Broadband directional antenna
US4431977A (en) 1982-02-16 1984-02-14 Motorola, Inc. Ceramic bandpass filter
JPS59125104U (en) 1983-02-10 1984-08-23 株式会社村田製作所 outer join structure
CA1212175A (en) 1983-03-19 1986-09-30 Takashi Oda Double loop antenna for use in connection to a miniature radio receiver
US4546357A (en) 1983-04-11 1985-10-08 The Singer Company Furniture antenna system
JPS59202831A (en) 1983-05-06 1984-11-16 Yoshida Kogyo Kk <Ykk> Manufacture of foil decorated molded product, its product and transfer foil
FR2553584B1 (en) 1983-10-13 1986-04-04 Applic Rech Electronique HALF-LOOP ANTENNA FOR LAND VEHICLE
FR2556510B1 (en) 1983-12-13 1986-08-01 Thomson Csf PERIODIC PLANE ANTENNA
JPS60206304A (en) 1984-03-30 1985-10-17 Nissha Printing Co Ltd Production of parabolic antenna reflector
US4706050A (en) 1984-09-22 1987-11-10 Smiths Industries Public Limited Company Microstrip devices
US4742562A (en) 1984-09-27 1988-05-03 Motorola, Inc. Single-block dual-passband ceramic filter useable with a transceiver
JPS61196603A (en) 1985-02-26 1986-08-30 Mitsubishi Electric Corp Antenna
JPS61208902A (en) 1985-03-13 1986-09-17 Murata Mfg Co Ltd Mic type dielectric filter
JPS61245704A (en) 1985-04-24 1986-11-01 Matsushita Electric Works Ltd Flat antenna
JPS61285801A (en) 1985-06-11 1986-12-16 Matsushita Electric Ind Co Ltd Filter
US4661992A (en) 1985-07-31 1987-04-28 Motorola Inc. Switchless external antenna connector for portable radios
US4740765A (en) 1985-09-30 1988-04-26 Murata Manufacturing Co., Ltd. Dielectric filter
US4954796A (en) 1986-07-25 1990-09-04 Motorola, Inc. Multiple resonator dielectric filter
US4716391A (en) 1986-07-25 1987-12-29 Motorola, Inc. Multiple resonator component-mountable filter
US4692726A (en) 1986-07-25 1987-09-08 Motorola, Inc. Multiple resonator dielectric filter
JPS6342501A (en) 1986-08-08 1988-02-23 Alps Electric Co Ltd Microwave band-pass filter
US4862181A (en) 1986-10-31 1989-08-29 Motorola, Inc. Miniature integral antenna-radio apparatus
US4835541A (en) 1986-12-29 1989-05-30 Ball Corporation Near-isotropic low-profile microstrip radiator especially suited for use as a mobile vehicle antenna
US4800392A (en) 1987-01-08 1989-01-24 Motorola, Inc. Integral laminar antenna and radio housing
US4835538A (en) 1987-01-15 1989-05-30 Ball Corporation Three resonator parasitically coupled microstrip antenna array element
US4821006A (en) 1987-01-17 1989-04-11 Murata Manufacturing Co., Ltd. Dielectric resonator apparatus
US4800348A (en) 1987-08-03 1989-01-24 Motorola, Inc. Adjustable electronic filter and method of tuning same
FI78198C (en) 1987-11-20 1989-06-12 Lk Products Oy Överföringsledningsresonator
JPH0659009B2 (en) 1988-03-10 1994-08-03 株式会社豊田中央研究所 Mobile antenna
US4879533A (en) 1988-04-01 1989-11-07 Motorola, Inc. Surface mount filter with integral transmission line connection
GB8809688D0 (en) 1988-04-25 1988-06-02 Marconi Co Ltd Transceiver testing apparatus
US4965537A (en) 1988-06-06 1990-10-23 Motorola Inc. Tuneless monolithic ceramic filter manufactured by using an art-work mask process
US4823098A (en) 1988-06-14 1989-04-18 Motorola, Inc. Monolithic ceramic filter with bandstop function
FI80542C (en) 1988-10-27 1990-06-11 Lk Products Oy resonator
US4896124A (en) 1988-10-31 1990-01-23 Motorola, Inc. Ceramic filter having integral phase shifting network
JPH02125503A (en) 1988-11-04 1990-05-14 Kokusai Electric Co Ltd Small sized antenna
JPH0821812B2 (en) 1988-12-27 1996-03-04 原田工業株式会社 Flat antenna for mobile communication
JPH02214205A (en) 1989-02-14 1990-08-27 Fujitsu Ltd Electronic circuit device
US4980694A (en) 1989-04-14 1990-12-25 Goldstar Products Company, Limited Portable communication apparatus with folded-slot edge-congruent antenna
JPH0812961B2 (en) 1989-05-02 1996-02-07 株式会社村田製作所 Parallel multi-stage bandpass filter
FI84536C (en) 1989-05-22 1991-12-10 Nokia Mobira Oy RF connectors for connecting a radio telephone to an external antenna
JPH02308604A (en) 1989-05-23 1990-12-21 Harada Ind Co Ltd Flat plate antenna for mobile communication
US5307036A (en) 1989-06-09 1994-04-26 Lk-Products Oy Ceramic band-stop filter
US5103197A (en) 1989-06-09 1992-04-07 Lk-Products Oy Ceramic band-pass filter
US5109536A (en) 1989-10-27 1992-04-28 Motorola, Inc. Single-block filter for antenna duplexing and antenna-summed diversity
US5363114A (en) 1990-01-29 1994-11-08 Shoemaker Kevin O Planar serpentine antennas
FI84674C (en) 1990-02-07 1991-12-27 Lk Products Oy Helix resonator
FI87405C (en) 1990-02-07 1992-12-28 Lk Products Oy HOEGFREKVENSFILTER
US5043738A (en) 1990-03-15 1991-08-27 Hughes Aircraft Company Plural frequency patch antenna assembly
US5220335A (en) 1990-03-30 1993-06-15 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Planar microstrip Yagi antenna array
FI90157C (en) 1990-05-04 1993-12-27 Lk Products Oy STOEDANORDNING FOER HELIX-RESONATOR
FI84211C (en) 1990-05-04 1991-10-25 Lk Products Oy Temperature compensation in a helix resonator
FI85079C (en) 1990-06-26 1992-02-25 Idesco Oy DATAOEVERFOERINGSANORDNING.
FI88565C (en) 1990-07-06 1993-05-25 Lk Products Oy Method for improving the barrier attenuation of a radio frequency filter
JPH04103228A (en) 1990-08-22 1992-04-06 Mitsubishi Electric Corp Radio repeater and radio equipment
US5155493A (en) 1990-08-28 1992-10-13 The United States Of America As Represented By The Secretary Of The Air Force Tape type microstrip patch antenna
FI88286C (en) 1990-09-19 1993-04-26 Lk Products Oy Method of coating a dielectric ceramic piece with an electrically conductive layer
US5203021A (en) 1990-10-22 1993-04-13 Motorola Inc. Transportable support assembly for transceiver
US5166697A (en) 1991-01-28 1992-11-24 Lockheed Corporation Complementary bowtie dipole-slot antenna
US5231406A (en) 1991-04-05 1993-07-27 Ball Corporation Broadband circular polarization satellite antenna
FI86673C (en) 1991-04-12 1992-09-25 Lk Products Oy CERAMIC DUPLEXFILTER.
FI87854C (en) 1991-04-12 1993-02-25 Lk Products Oy Method of manufacturing a high frequency filter as well as high frequency filters made according to the method
FI90158C (en) 1991-06-25 1993-12-27 Lk Products Oy OEVERTONSFREKVENSFILTER AVSETT FOER ETT KERAMISKT FILTER
FI88441C (en) 1991-06-25 1993-05-10 Lk Products Oy TEMPERATURKOMPENSERAT DIELEKTRISKT FILTER
FI88443C (en) 1991-06-25 1993-05-10 Lk Products Oy The structure of a ceramic filter
FI88440C (en) 1991-06-25 1993-05-10 Lk Products Oy Ceramic filter
FI88442C (en) 1991-06-25 1993-05-10 Lk Products Oy Method for offset of the characteristic curve of a resonated or in the frequency plane and a resonator structure
US5210542A (en) 1991-07-03 1993-05-11 Ball Corporation Microstrip patch antenna structure
US5355142A (en) 1991-10-15 1994-10-11 Ball Corporation Microstrip antenna structure suitable for use in mobile radio communications and method for making same
US5541617A (en) 1991-10-21 1996-07-30 Connolly; Peter J. Monolithic quadrifilar helix antenna
US5349700A (en) 1991-10-28 1994-09-20 Bose Corporation Antenna tuning system for operation over a predetermined frequency range
FI89644C (en) 1991-10-31 1993-10-25 Lk Products Oy TEMPERATURKOMPENSERAD RESONATOR
US5229777A (en) 1991-11-04 1993-07-20 Doyle David W Microstrap antenna
ATE154734T1 (en) 1991-12-10 1997-07-15 Blaese Herbert R AUXILIARY ANTENNA
US5432489A (en) 1992-03-09 1995-07-11 Lk-Products Oy Filter with strip lines
FI91116C (en) 1992-04-21 1994-05-10 Lk Products Oy Helix resonator
US5438697A (en) 1992-04-23 1995-08-01 M/A-Com, Inc. Microstrip circuit assembly and components therefor
US5170173A (en) 1992-04-27 1992-12-08 Motorola, Inc. Antenna coupling apparatus for cordless telephone
GB2266997A (en) 1992-05-07 1993-11-17 Wallen Manufacturing Limited Radio antenna.
FI90808C (en) 1992-05-08 1994-03-25 Lk Products Oy The resonator structure
FI90926C (en) 1992-05-14 1994-04-11 Lk Products Oy High frequency filter with switching property
US5455594A (en) 1992-07-16 1995-10-03 Conductus, Inc. Internal thermal isolation layer for array antenna
JP3457351B2 (en) 1992-09-30 2003-10-14 株式会社東芝 Portable wireless devices
JPH06152463A (en) 1992-11-06 1994-05-31 Fujitsu Ltd Portable radio terminal equipment
FI92265C (en) 1992-11-23 1994-10-10 Lk Products Oy Radio frequency filter, whose helix resonators on the inside are supported by an insulation plate
US5444453A (en) 1993-02-02 1995-08-22 Ball Corporation Microstrip antenna structure having an air gap and method of constructing same
FI93504C (en) 1993-03-03 1995-04-10 Lk Products Oy Transmission line filter with adjustable transmission zeros
FI93503C (en) 1993-03-03 1995-04-10 Lk Products Oy RF filter
FI94298C (en) 1993-03-03 1995-08-10 Lk Products Oy Method and connection for changing the filter type
ZA941671B (en) 1993-03-11 1994-10-12 Csir Attaching an electronic circuit to a substrate.
US5394162A (en) 1993-03-18 1995-02-28 Ford Motor Company Low-loss RF coupler for testing a cellular telephone
US5711014A (en) 1993-04-05 1998-01-20 Crowley; Robert J. Antenna transmission coupling arrangement
FI93404C (en) 1993-04-08 1995-03-27 Lk Products Oy Method of making a connection opening in the partition wall between the helix resonators of a radio frequency filter and a filter
US5532703A (en) 1993-04-22 1996-07-02 Valor Enterprises, Inc. Antenna coupler for portable cellular telephones
EP0621653B1 (en) 1993-04-23 1999-12-29 Murata Manufacturing Co., Ltd. Surface-mountable antenna unit
FI99216C (en) 1993-07-02 1997-10-27 Lk Products Oy Dielectric filter
US5442366A (en) 1993-07-13 1995-08-15 Ball Corporation Raised patch antenna
DE69409447T2 (en) 1993-07-30 1998-11-05 Matsushita Electric Ind Co Ltd Antenna for mobile radio
FI95851C (en) 1993-09-10 1996-03-25 Lk Products Oy Connection for electrical frequency control of a transmission line resonator and an adjustable filter
FI110148B (en) 1993-09-10 2002-11-29 Filtronic Lk Oy Multi-resonator radio frequency filter
JPH07131234A (en) 1993-11-02 1995-05-19 Nippon Mektron Ltd Biresonance antenna
FI94914C (en) 1993-12-23 1995-11-10 Lk Products Oy Combed helix filter
FI95087C (en) 1994-01-18 1995-12-11 Lk Products Oy Dielectric resonator frequency control
US5440315A (en) 1994-01-24 1995-08-08 Intermec Corporation Antenna apparatus for capacitively coupling an antenna ground plane to a moveable antenna
FI95327C (en) 1994-01-26 1996-01-10 Lk Products Oy Adjustable filter
JPH07221536A (en) 1994-02-08 1995-08-18 Japan Radio Co Ltd Small antenna
FI97086C (en) 1994-02-09 1996-10-10 Lk Products Oy Arrangements for separation of transmission and reception
US5751256A (en) 1994-03-04 1998-05-12 Flexcon Company Inc. Resonant tag labels and method of making same
JPH08510622A (en) 1994-03-08 1996-11-05 セテルコ セルラー テレフォーン カンパニー アー／エス Handy transmitter / receiver
JPH07249923A (en) 1994-03-09 1995-09-26 Murata Mfg Co Ltd Surface mounting type antenna
FI95516C (en) 1994-03-15 1996-02-12 Lk Products Oy Coupling element for coupling to a transmission line resonator
EP0687030B1 (en) 1994-05-10 2001-09-26 Murata Manufacturing Co., Ltd. Antenna unit
JPH07307612A (en) 1994-05-11 1995-11-21 Sony Corp Plane antenna
FI98870C (en) 1994-05-26 1997-08-25 Lk Products Oy Dielectric filter
US5557292A (en) 1994-06-22 1996-09-17 Space Systems/Loral, Inc. Multiple band folding antenna
US5757327A (en) 1994-07-29 1998-05-26 Mitsumi Electric Co., Ltd. Antenna unit for use in navigation system
FR2724274B1 (en) 1994-09-07 1996-11-08 Telediffusion Fse FRAME ANTENNA, INSENSITIVE TO CAPACITIVE EFFECT, AND TRANSCEIVER DEVICE COMPRISING SUCH ANTENNA
FI96998C (en) 1994-10-07 1996-09-25 Lk Products Oy Radio frequency filter with Helix resonators
CA2164669C (en) 1994-12-28 2000-01-18 Martin Victor Schneider Multi-branch miniature patch antenna having polarization and share diversity
US5517683A (en) 1995-01-18 1996-05-14 Cycomm Corporation Conformant compact portable cellular phone case system and connector
JP3238596B2 (en) 1995-02-09 2001-12-17 日立化成工業株式会社 IC card
WO1996027219A1 (en) 1995-02-27 1996-09-06 The Chinese University Of Hong Kong Meandering inverted-f antenna
US5557287A (en) 1995-03-06 1996-09-17 Motorola, Inc. Self-latching antenna field coupler
US5649316A (en) 1995-03-17 1997-07-15 Elden, Inc. In-vehicle antenna
FI97923C (en) 1995-03-22 1997-03-10 Lk Products Oy Step-by-step filter
FI97922C (en) 1995-03-22 1997-03-10 Lk Products Oy Improved blocking / emission filter
JP2782053B2 (en) 1995-03-23 1998-07-30 本田技研工業株式会社 Radar module and antenna device
FI99220C (en) 1995-04-05 1997-10-27 Lk Products Oy Antenna, especially mobile phone antenna, and method of manufacturing the antenna
FI109493B (en) 1995-04-07 2002-08-15 Filtronic Lk Oy An elastic antenna structure and a method for its manufacture
FI102121B1 (en) 1995-04-07 1998-10-15 Lk Products Oy Radio communication transmitter / receiver
JP3521019B2 (en) 1995-04-08 2004-04-19 ソニー株式会社 Antenna coupling device
FI98417C (en) 1995-05-03 1997-06-10 Lk Products Oy Siirtojohtoresonaattorisuodatin
US5709832A (en) 1995-06-02 1998-01-20 Ericsson Inc. Method of manufacturing a printed antenna
FI98165C (en) 1995-06-05 1997-04-25 Lk Products Oy Dual function antenna
US5589844A (en) 1995-06-06 1996-12-31 Flash Comm, Inc. Automatic antenna tuner for low-cost mobile radio
JP3275632B2 (en) 1995-06-15 2002-04-15 株式会社村田製作所 Wireless communication device
FI99070C (en) 1995-06-30 1997-09-25 Nokia Mobile Phones Ltd Position
JPH0951221A (en) 1995-08-07 1997-02-18 Murata Mfg Co Ltd Chip antenna
FI98872C (en) 1995-08-23 1997-08-25 Lk Products Oy Improved step-adjustable filter
JP3285299B2 (en) 1995-09-13 2002-05-27 シャープ株式会社 Compact antenna, optical beacon, radio beacon shared front end
FI954552A (en) 1995-09-26 1997-03-27 Nokia Mobile Phones Ltd Device for connecting a radio telephone to an external antenna
US5696517A (en) 1995-09-28 1997-12-09 Murata Manufacturing Co., Ltd. Surface mounting antenna and communication apparatus using the same
JP3114582B2 (en) 1995-09-29 2000-12-04 株式会社村田製作所 Surface mount antenna and communication device using the same
US5668561A (en) 1995-11-13 1997-09-16 Motorola, Inc. Antenna coupler
FI99174C (en) 1995-11-23 1997-10-10 Lk Products Oy Switchable duplex filter
US5943016A (en) 1995-12-07 1999-08-24 Atlantic Aerospace Electronics, Corp. Tunable microstrip patch antenna and feed network therefor
US5777581A (en) 1995-12-07 1998-07-07 Atlantic Aerospace Electronics Corporation Tunable microstrip patch antennas
US5694135A (en) 1995-12-18 1997-12-02 Motorola, Inc. Molded patch antenna having an embedded connector and method therefor
US6043780A (en) 1995-12-27 2000-03-28 Funk; Thomas J. Antenna adapter
JP2000502865A (en) 1995-12-27 2000-03-07 カルコム・インコーポレーテッド Antenna adapter
FI106895B (en) 1996-02-16 2001-04-30 Filtronic Lk Oy A combined structure of a helix antenna and a dielectric disk
US6009311A (en) 1996-02-21 1999-12-28 Etymotic Research Method and apparatus for reducing audio interference from cellular telephone transmissions
US5767809A (en) 1996-03-07 1998-06-16 Industrial Technology Research Institute OMNI-directional horizontally polarized Alford loop strip antenna
US5874926A (en) 1996-03-11 1999-02-23 Murata Mfg Co. Ltd Matching circuit and antenna apparatus
JP2957463B2 (en) 1996-03-11 1999-10-04 日本電気株式会社 Patch antenna and method of manufacturing the same
JPH09260934A (en) 1996-03-26 1997-10-03 Matsushita Electric Works Ltd Microstrip antenna
GB9606593D0 (en) 1996-03-29 1996-06-05 Symmetricom Inc An antenna system
US5812094A (en) 1996-04-02 1998-09-22 Qualcomm Incorporated Antenna coupler for a portable radiotelephone
US5852421A (en) 1996-04-02 1998-12-22 Qualcomm Incorporated Dual-band antenna coupler for a portable radiotelephone
US5734350A (en) 1996-04-08 1998-03-31 Xertex Technologies, Inc. Microstrip wide band antenna
FI112980B (en) 1996-04-26 2004-02-13 Filtronic Lk Oy Integrated filter design
US5703600A (en) 1996-05-08 1997-12-30 Motorola, Inc. Microstrip antenna with a parasitically coupled ground plane
US6130602A (en) 1996-05-13 2000-10-10 Micron Technology, Inc. Radio frequency data communications device
JP3340621B2 (en) 1996-05-13 2002-11-05 松下電器産業株式会社 Planar antenna
FI100927B (en) 1996-05-14 1998-03-13 Filtronic Lk Oy Coupling element for electromagnetic coupling and device for connecting a radio telephone to an external antenna
US6157819A (en) 1996-05-14 2000-12-05 Lk-Products Oy Coupling element for realizing electromagnetic coupling and apparatus for coupling a radio telephone to an external antenna
JPH09307329A (en) 1996-05-14 1997-11-28 Casio Comput Co Ltd Antenna, its manufacture and electronic device or electric watch provided with the antenna
JP3296189B2 (en) 1996-06-03 2002-06-24 三菱電機株式会社 Antenna device
JP3114621B2 (en) 1996-06-19 2000-12-04 株式会社村田製作所 Surface mount antenna and communication device using the same
CA2259564A1 (en) 1996-07-04 1998-01-15 Skygate International Technology N.V. A planar dual-frequency array antenna
DK176625B1 (en) 1996-07-05 2008-12-01 Ipcom Gmbh & Co Kg Handheld device with antenna means for transmitting a radio signal
JPH1028013A (en) 1996-07-11 1998-01-27 Matsushita Electric Ind Co Ltd Planar antenna
US5764190A (en) 1996-07-15 1998-06-09 The Hong Kong University Of Science & Technology Capacitively loaded PIFA
FI110394B (en) 1996-08-06 2003-01-15 Filtronic Lk Oy Combination antenna
FR2752646B1 (en) 1996-08-21 1998-11-13 France Telecom FLAT PRINTED ANTENNA WITH SHORT-LAYERED ELEMENTS
FI102434B (en) 1996-08-22 1998-11-30 Filtronic Lk Oy dual-frequency,
FI102432B1 (en) 1996-09-11 1998-11-30 Lk Products Oy Antenna filtering device for a dual-acting radio communication device
JP3180683B2 (en) 1996-09-20 2001-06-25 株式会社村田製作所 Surface mount antenna
US5880697A (en) 1996-09-25 1999-03-09 Torrey Science Corporation Low-profile multi-band antenna
JPH10107671A (en) 1996-09-26 1998-04-24 Kokusai Electric Co Ltd Antenna for portable radio terminal
FI106608B (en) 1996-09-26 2001-02-28 Filtronic Lk Oy Electrically adjustable filter
GB2317994B (en) 1996-10-02 2001-02-28 Northern Telecom Ltd A multiresonant antenna
BR9711887A (en) 1996-10-09 2002-01-02 Pav Card Gmbh Connective arrangement and process for producing a smart card
JP3047836B2 (en) 1996-11-07 2000-06-05 株式会社村田製作所 Meander line antenna
FI112985B (en) 1996-11-14 2004-02-13 Filtronic Lk Oy Simple antenna design
JP3216588B2 (en) 1996-11-21 2001-10-09 株式会社村田製作所 Antenna device
EP0847099A1 (en) 1996-12-04 1998-06-10 ICO Services Ltd. Antenna assembly
JPH10173423A (en) 1996-12-13 1998-06-26 Kiyoumei:Kk Antenna element for mobile telephone
EP0851530A3 (en) 1996-12-28 2000-07-26 Lucent Technologies Inc. Antenna apparatus in wireless terminals
FI113214B (en) 1997-01-24 2004-03-15 Filtronic Lk Oy Simple dual frequency antenna
JPH10224142A (en) 1997-02-04 1998-08-21 Kenwood Corp Resonance frequency switchable inverse f-type antenna
US6072434A (en) 1997-02-04 2000-06-06 Lucent Technologies Inc. Aperture-coupled planar inverted-F antenna
FI106584B (en) 1997-02-07 2001-02-28 Filtronic Lk Oy High Frequency Filter
SE508356C2 (en) 1997-02-24 1998-09-28 Ericsson Telefon Ab L M Antenna Installations
US5970393A (en) 1997-02-25 1999-10-19 Polytechnic University Integrated micro-strip antenna apparatus and a system utilizing the same for wireless communications for sensing and actuation purposes
FI110395B (en) 1997-03-25 2003-01-15 Nokia Corp Broadband antenna is provided with short-circuited microstrips
JPH114113A (en) 1997-04-18 1999-01-06 Murata Mfg Co Ltd Surface mount antenna and communication apparatus using the same
JP3695123B2 (en) 1997-04-18 2005-09-14 株式会社村田製作所 ANTENNA DEVICE AND COMMUNICATION DEVICE USING THE SAME
JP3779430B2 (en) 1997-05-20 2006-05-31 日本アンテナ株式会社 Broadband plate antenna
JPH10327011A (en) 1997-05-23 1998-12-08 Yamakoshi Tsushin Seisakusho:Kk Antenna for reception
US5926139A (en) 1997-07-02 1999-07-20 Lucent Technologies Inc. Planar dual frequency band antenna
FI113212B (en) 1997-07-08 2004-03-15 Nokia Corp Dual resonant antenna design for multiple frequency ranges
JPH1168456A (en) 1997-08-19 1999-03-09 Murata Mfg Co Ltd Surface mounting antenna
JPH11136025A (en) 1997-08-26 1999-05-21 Murata Mfg Co Ltd Frequency switching type surface mounting antenna, antenna device using the antenna and communication unit using the antenna device
US6134421A (en) 1997-09-10 2000-10-17 Qualcomm Incorporated RF coupler for wireless telephone cradle
JPH11127010A (en) 1997-10-22 1999-05-11 Sony Corp Antenna system and portable radio equipment
JPH11127014A (en) 1997-10-23 1999-05-11 Mitsubishi Materials Corp Antenna system
FI114848B (en) 1997-11-25 2004-12-31 Filtronic Lk Oy Frame structure, apparatus and method for manufacturing the apparatus
FI112983B (en) 1997-12-10 2004-02-13 Nokia Corp Antenna
AU1721299A (en) 1997-12-11 1999-06-28 Ericsson Inc. System and method for cellular network selection based on roaming charges
FR2772517B1 (en) 1997-12-11 2000-01-07 Alsthom Cge Alcatel MULTIFREQUENCY ANTENNA MADE ACCORDING TO MICRO-TAPE TECHNIQUE AND DEVICE INCLUDING THIS ANTENNA
FI111884B (en) 1997-12-16 2003-09-30 Filtronic Lk Oy Helix antenna for dual frequency operation
US6034637A (en) 1997-12-23 2000-03-07 Motorola, Inc. Double resonant wideband patch antenna and method of forming same
US5929813A (en) 1998-01-09 1999-07-27 Nokia Mobile Phones Limited Antenna for mobile communications device
US6429818B1 (en) 1998-01-16 2002-08-06 Tyco Electronics Logistics Ag Single or dual band parasitic antenna assembly
WO2001033665A1 (en) 1999-11-04 2001-05-10 Rangestar Wireless, Inc. Single or dual band parasitic antenna assembly
JP3252786B2 (en) 1998-02-24 2002-02-04 株式会社村田製作所 Antenna device and wireless device using the same
SE511900E (en) 1998-04-01 2002-05-21 Allgon Ab Antenna device, a method for its preparation and a handheld radio communication device
US5986608A (en) 1998-04-02 1999-11-16 Lucent Technologies Inc. Antenna coupler for portable telephone
US6308720B1 (en) 1998-04-08 2001-10-30 Lockheed Martin Corporation Method for precision-cleaning propellant tanks
SE9801381D0 (en) 1998-04-20 1998-04-20 Allgon Ab Ground extension arrangement for coupling to ground means in an antenna system, and an antenna system and a mobile radio device having such ground arrangement
JP3246440B2 (en) 1998-04-28 2002-01-15 株式会社村田製作所 Antenna device and communication device using the same
FI113579B (en) 1998-05-08 2004-05-14 Filtronic Lk Oy Filter structure and oscillator for multiple gigahertz frequencies
JPH11355033A (en) 1998-06-03 1999-12-24 Kokusai Electric Co Ltd Antenna device
US6353443B1 (en) 1998-07-09 2002-03-05 Telefonaktiebolaget Lm Ericsson (Publ) Miniature printed spiral antenna for mobile terminals
US6006419A (en) 1998-09-01 1999-12-28 Millitech Corporation Synthetic resin transreflector and method of making same
KR100467569B1 (en) 1998-09-11 2005-03-16 삼성전자주식회사 Microstrip patch antenna for transmitting and receiving
JP2002526968A (en) 1998-09-25 2002-08-20 エリクソン インコーポレイテッド Mobile phone with folding antenna
JP2000114856A (en) 1998-09-30 2000-04-21 Nec Saitama Ltd Reversed f antenna and radio equipment using the same
FI105061B (en) 1998-10-30 2000-05-31 Lk Products Oy Planar antenna with two resonant frequencies
US6097345A (en) 1998-11-03 2000-08-01 The Ohio State University Dual band antenna for vehicles
FI106077B (en) 1998-11-04 2000-11-15 Nokia Mobile Phones Ltd Antenna connector and arrangement for connecting a radio telecommunication device to external devices
JP3351363B2 (en) 1998-11-17 2002-11-25 株式会社村田製作所 Surface mount antenna and communication device using the same
US6343208B1 (en) 1998-12-16 2002-01-29 Telefonaktiebolaget Lm Ericsson (Publ) Printed multi-band patch antenna
EP1020947A3 (en) 1998-12-22 2000-10-04 Nokia Mobile Phones Ltd. Method for manufacturing an antenna body for a phone and phone or handset having an internal antenna
GB2345196B (en) 1998-12-23 2003-11-26 Nokia Mobile Phones Ltd An antenna and method of production
EP1014487A1 (en) 1998-12-23 2000-06-28 Sony International (Europe) GmbH Patch antenna and method for tuning a patch antenna
FI105421B (en) 1999-01-05 2000-08-15 Filtronic Lk Oy Planes two frequency antenna and radio device equipped with a planar antenna
EP1026774A3 (en) 1999-01-26 2000-08-30 Siemens Aktiengesellschaft Antenna for wireless operated communication terminals
FR2788888B1 (en) 1999-01-26 2001-04-13 Sylea ELECTRICAL CONNECTOR FOR FLAT CABLE
EP1024552A3 (en) 1999-01-26 2003-05-07 Siemens Aktiengesellschaft Antenna for radio communication terminals
JP2000278028A (en) 1999-03-26 2000-10-06 Murata Mfg Co Ltd Chip antenna, antenna system and radio unit
US6542050B1 (en) 1999-03-30 2003-04-01 Ngk Insulators, Ltd. Transmitter-receiver
FI113588B (en) 1999-05-10 2004-05-14 Nokia Corp Antenna Design
GB2349982B (en) 1999-05-11 2004-01-07 Nokia Mobile Phones Ltd Antenna
DE60018878T2 (en) 1999-05-21 2005-07-28 Matsushita Electric Industrial Co., Ltd., Kadoma ANTENNA FOR MOBILE COMMUNICATION AND MOBILE COMMUNICATION DEVICE WITH SUCH ANTENNA
US6862437B1 (en) 1999-06-03 2005-03-01 Tyco Electronics Corporation Dual band tuning
FI112986B (en) 1999-06-14 2004-02-13 Filtronic Lk Oy Antenna Design
JP3554960B2 (en) 1999-06-25 2004-08-18 株式会社村田製作所 Antenna device and communication device using the same
FI112981B (en) 1999-07-08 2004-02-13 Filtronic Lk Oy More frequency antenna
EP1067627B1 (en) 1999-07-09 2009-06-24 IPCom GmbH & Co. KG Dual band radio apparatus
FI114259B (en) 1999-07-14 2004-09-15 Filtronic Lk Oy Structure of a radio frequency front end
US6204826B1 (en) 1999-07-22 2001-03-20 Ericsson Inc. Flat dual frequency band antennas for wireless communicators
FR2797352B1 (en) 1999-08-05 2007-04-20 Cit Alcatel STORED ANTENNA OF RESONANT STRUCTURES AND MULTIFREQUENCY RADIOCOMMUNICATION DEVICE INCLUDING THE ANTENNA
JP2001053543A (en) 1999-08-12 2001-02-23 Sony Corp Antenna device
US6456249B1 (en) 1999-08-16 2002-09-24 Tyco Electronics Logistics A.G. Single or dual band parasitic antenna assembly
FI112982B (en) 1999-08-25 2004-02-13 Filtronic Lk Oy Level Antenna Structure
KR100432100B1 (en) 1999-09-09 2004-05-17 가부시키가이샤 무라타 세이사쿠쇼 Surface-mount antenna and communication device with surface-mount antenna
FI114587B (en) 1999-09-10 2004-11-15 Filtronic Lk Oy Level Antenna Structure
WO2001020718A1 (en) 1999-09-10 2001-03-22 Avantego Ab Antenna arrangement
WO2001024316A1 (en) 1999-09-30 2001-04-05 Murata Manufacturing Co., Ltd. Surface-mount antenna and communication device with surface-mount antenna
AU7999500A (en) 1999-10-12 2001-04-23 Arc Wireless Solutions, Inc. Compact dual narrow band microstrip antenna
WO2001029927A1 (en) 1999-10-15 2001-04-26 Siemens Aktiengesellschaft Switchable antenna
FI112984B (en) 1999-10-20 2004-02-13 Filtronic Lk Oy Internal antenna
FI114586B (en) 1999-11-01 2004-11-15 Filtronic Lk Oy flat Antenna
US6404394B1 (en) 1999-12-23 2002-06-11 Tyco Electronics Logistics Ag Dual polarization slot antenna assembly
US6480155B1 (en) 1999-12-28 2002-11-12 Nokia Corporation Antenna assembly, and associated method, having an active antenna element and counter antenna element
FI113911B (en) 1999-12-30 2004-06-30 Nokia Corp Method for coupling a signal and antenna structure
JP3528737B2 (en) 2000-02-04 2004-05-24 株式会社村田製作所 Surface mounted antenna, method of adjusting the same, and communication device having surface mounted antenna
DE10006530A1 (en) 2000-02-15 2001-08-16 Siemens Ag Antenna spring
FI114254B (en) 2000-02-24 2004-09-15 Filtronic Lk Oy Planantennskonsruktion
US6603430B1 (en) 2000-03-09 2003-08-05 Tyco Electronics Logistics Ag Handheld wireless communication devices with antenna having parasitic element
JP3478264B2 (en) 2000-03-10 2003-12-15 株式会社村田製作所 Surface acoustic wave device
US6326921B1 (en) 2000-03-14 2001-12-04 Telefonaktiebolaget Lm Ericsson (Publ) Low profile built-in multi-band antenna
GB2360422B (en) 2000-03-15 2004-04-07 Texas Instruments Ltd Improvements in or relating to radio ID device readers
JP2001267833A (en) 2000-03-16 2001-09-28 Mitsubishi Electric Corp Microstrip antenna
US6268831B1 (en) 2000-04-04 2001-07-31 Ericsson Inc. Inverted-f antennas with multiple planar radiating elements and wireless communicators incorporating same
EP1146589B1 (en) 2000-04-14 2005-11-23 Hitachi Metals, Ltd. Chip antenna element and communication apparatus comprising the same
JP3600117B2 (en) 2000-05-15 2004-12-08 シャープ株式会社 Mobile phone
US6529749B1 (en) 2000-05-22 2003-03-04 Ericsson Inc. Convertible dipole/inverted-F antennas and wireless communicators incorporating the same
FI113220B (en) 2000-06-12 2004-03-15 Filtronic Lk Oy Antenna with several bands
FI114255B (en) 2000-06-30 2004-09-15 Nokia Corp Antenna circuit arrangement and test method
SE523526C2 (en) 2000-07-07 2004-04-27 Smarteq Wireless Ab Adapter antenna designed to interact electromagnetically with an antenna built into a mobile phone
FR2812766B1 (en) 2000-08-01 2006-10-06 Sagem ANTENNA WITH SURFACE (S) RADIANT (S) PLANE (S) AND PORTABLE TELEPHONE COMPRISING SUCH ANTENNA
WO2002013307A1 (en) 2000-08-07 2002-02-14 Telefonaktiebolaget L M Ericsson Antenna
JP2002064324A (en) 2000-08-23 2002-02-28 Matsushita Electric Ind Co Ltd Antenna device
JP2002076750A (en) 2000-08-24 2002-03-15 Murata Mfg Co Ltd Antenna device and radio equipment equipped with it
JP2002076756A (en) 2000-08-30 2002-03-15 Philips Japan Ltd Antenna apparatus
WO2002027860A1 (en) 2000-09-26 2002-04-04 Matsushita Electric Industrial Co., Ltd. Portable radio apparatus antenna
US6295029B1 (en) 2000-09-27 2001-09-25 Auden Techno Corp. Miniature microstrip antenna
FI20002123A (en) 2000-09-27 2002-03-28 Nokia Mobile Phones Ltd Mobile antenna arrangement
FI113217B (en) 2000-10-18 2004-03-15 Filtronic Lk Oy Dual acting antenna and radio
US6634564B2 (en) 2000-10-24 2003-10-21 Dai Nippon Printing Co., Ltd. Contact/noncontact type data carrier module
FI113216B (en) 2000-10-27 2004-03-15 Filtronic Lk Oy Dual-acting antenna structure and radio unit
SE522492C2 (en) 2000-10-27 2004-02-10 Ericsson Telefon Ab L M Antenna device for a mobile terminal
US6512487B1 (en) 2000-10-31 2003-01-28 Harris Corporation Wideband phased array antenna and associated methods
JP2002171190A (en) 2000-12-01 2002-06-14 Nec Corp Compact portable telephone
US6677903B2 (en) 2000-12-04 2004-01-13 Arima Optoelectronics Corp. Mobile communication device having multiple frequency band antenna
JP2002185238A (en) 2000-12-11 2002-06-28 Sony Corp Built-in antenna device corresponding to dual band, and portable wireless terminal equipped therewith
JP4598267B2 (en) 2000-12-26 2010-12-15 レノボ シンガポール プライヴェート リミテッド Transmission device, computer system, and opening / closing structure
FI20002882A (en) 2000-12-29 2002-06-30 Nokia Corp Arrangement for customizing an antenna
US6337663B1 (en) 2001-01-02 2002-01-08 Auden Techno Corp. Built-in dual frequency antenna
US6459413B1 (en) 2001-01-10 2002-10-01 Industrial Technology Research Institute Multi-frequency band antenna
DE10104862A1 (en) 2001-02-03 2002-08-08 Bosch Gmbh Robert Junction conductor for connecting circuit board track to separate circuit section e.g. patch of patch antenna, comprises pins on arm which are inserted into holes on circuit board
WO2002067375A1 (en) 2001-02-13 2002-08-29 Koninklijke Philips Electronics N.V. Patch antenna with switchable reactive components for multiple frequency use in mobile communications
SE524825C2 (en) 2001-03-07 2004-10-12 Smarteq Wireless Ab Antenna coupling device cooperating with an internal first antenna arranged in a communication device
FI113218B (en) 2001-03-15 2004-03-15 Filtronic Lk Oy Adjustable antenna
US6950065B2 (en) 2001-03-22 2005-09-27 Telefonaktiebolaget L M Ericsson (Publ) Mobile communication device
EP1378021A1 (en) 2001-03-23 2004-01-07 Telefonaktiebolaget LM Ericsson (publ) A built-in, multi band, multi antenna system
JP2002299933A (en) 2001-04-02 2002-10-11 Murata Mfg Co Ltd Electrode structure for antenna and communication equipment provided with the same
FI113813B (en) 2001-04-02 2004-06-15 Nokia Corp Electrically tunable multiband antenna
JP2002314330A (en) 2001-04-10 2002-10-25 Murata Mfg Co Ltd Antenna device
US6690251B2 (en) 2001-04-11 2004-02-10 Kyocera Wireless Corporation Tunable ferro-electric filter
FI115871B (en) 2001-04-18 2005-07-29 Filtronic Lk Oy Procedure for setting up an antenna and antenna
JP4423809B2 (en) 2001-04-19 2010-03-03 株式会社村田製作所 Double resonance antenna
JP2002329541A (en) 2001-05-01 2002-11-15 Kojima Press Co Ltd Contact for antenna signal
JP3678167B2 (en) 2001-05-02 2005-08-03 株式会社村田製作所 ANTENNA DEVICE AND RADIO COMMUNICATION DEVICE HAVING THE ANTENNA DEVICE
JP2002335117A (en) 2001-05-08 2002-11-22 Murata Mfg Co Ltd Antenna structure and communication device equipped therewith
FI113215B (en) 2001-05-17 2004-03-15 Filtronic Lk Oy The multiband antenna
US20020183013A1 (en) 2001-05-25 2002-12-05 Auckland David T. Programmable radio frequency sub-system with integrated antennas and filters and wireless communication device using same
TW490885B (en) 2001-05-25 2002-06-11 Chi Mei Comm Systems Inc Broadband dual-band antenna
FI118403B (en) 2001-06-01 2007-10-31 Pulse Finland Oy Dielectric antenna
FR2825517A1 (en) 2001-06-01 2002-12-06 Socapex Amphenol Plate antenna, uses passive component facing radiating element with electromagnetic rather than mechanical coupling to simplify construction
JP2003069330A (en) 2001-06-15 2003-03-07 Hitachi Metals Ltd Surface-mounted antenna and communication apparatus mounting the same
JP4044302B2 (en) 2001-06-20 2008-02-06 株式会社村田製作所 Surface mount type antenna and radio using the same
FI115339B (en) 2001-06-29 2005-04-15 Filtronic Lk Oy Arrangement for integrating the antenna end of the radiotelephone
GB2377082A (en) 2001-06-29 2002-12-31 Nokia Corp Two element antenna system
FI118402B (en) 2001-06-29 2007-10-31 Pulse Finland Oy Integrated radio telephone construction
JP3654214B2 (en) 2001-07-25 2005-06-02 株式会社村田製作所 Method for manufacturing surface mount antenna and radio communication apparatus including the antenna
US6423915B1 (en) 2001-07-26 2002-07-23 Centurion Wireless Technologies, Inc. Switch contact for a planar inverted F antenna
US6452551B1 (en) 2001-08-02 2002-09-17 Auden Techno Corp. Capacitor-loaded type single-pole planar antenna
JP3502071B2 (en) 2001-08-08 2004-03-02 松下電器産業株式会社 Radio antenna device
JP2003087023A (en) 2001-09-13 2003-03-20 Toshiba Corp Portable information equipment incorporating radio communication antenna
US6552686B2 (en) 2001-09-14 2003-04-22 Nokia Corporation Internal multi-band antenna with improved radiation efficiency
US6476769B1 (en) 2001-09-19 2002-11-05 Nokia Corporation Internal multi-band antenna
KR100444219B1 (en) 2001-09-25 2004-08-16 삼성전기주식회사 Patch antenna for generating circular polarization
JP2003101335A (en) 2001-09-25 2003-04-04 Matsushita Electric Ind Co Ltd Antenna device and communication equipment using it
US6995710B2 (en) 2001-10-09 2006-02-07 Ngk Spark Plug Co., Ltd. Dielectric antenna for high frequency wireless communication apparatus
DE10150149A1 (en) 2001-10-11 2003-04-17 Receptec Gmbh Antenna module for automobile mobile radio antenna has antenna element spaced above conductive base plate and coupled to latter via short-circuit path
FI115343B (en) 2001-10-22 2005-04-15 Filtronic Lk Oy Internal multi-band antenna
EP1306922A3 (en) 2001-10-24 2006-08-16 Matsushita Electric Industrial Co., Ltd. Antenna structure, methof of using antenna structure and communication device
JP2003140773A (en) 2001-10-31 2003-05-16 Toshiba Corp Radio communication device and information processor
US7088739B2 (en) 2001-11-09 2006-08-08 Ericsson Inc. Method and apparatus for creating a packet using a digital signal processor
FI115342B (en) 2001-11-15 2005-04-15 Filtronic Lk Oy Method of making an internal antenna and antenna element
FI118404B (en) 2001-11-27 2007-10-31 Pulse Finland Oy Dual antenna and radio
JP2003179426A (en) 2001-12-13 2003-06-27 Matsushita Electric Ind Co Ltd Antenna device and portable radio system
US6650295B2 (en) 2002-01-28 2003-11-18 Nokia Corporation Tunable antenna for wireless communication terminals
FI119861B (en) 2002-02-01 2009-04-15 Pulse Finland Oy level antenna
US7230574B2 (en) 2002-02-13 2007-06-12 Greg Johnson Oriented PIFA-type device and method of use for reducing RF interference
US6639564B2 (en) 2002-02-13 2003-10-28 Gregory F. Johnson Device and method of use for reducing hearing aid RF interference
US6566944B1 (en) 2002-02-21 2003-05-20 Ericsson Inc. Current modulator with dynamic amplifier impedance compensation
TWI258246B (en) 2002-03-14 2006-07-11 Sony Ericsson Mobile Comm Ab Flat built-in radio antenna
US6819287B2 (en) 2002-03-15 2004-11-16 Centurion Wireless Technologies, Inc. Planar inverted-F antenna including a matching network having transmission line stubs and capacitor/inductor tank circuits
US6680705B2 (en) 2002-04-05 2004-01-20 Hewlett-Packard Development Company, L.P. Capacitive feed integrated multi-band antenna
FI121519B (en) 2002-04-09 2010-12-15 Pulse Finland Oy Directionally adjustable antenna
KR100533624B1 (en) 2002-04-16 2005-12-06 삼성전기주식회사 Multi band chip antenna with dual feeding port, and mobile communication apparatus using the same
US6717551B1 (en) 2002-11-12 2004-04-06 Ethertronics, Inc. Low-profile, multi-frequency, multi-band, magnetic dipole antenna
GB0209818D0 (en) 2002-04-30 2002-06-05 Koninkl Philips Electronics Nv Antenna arrangement
FI20020829A (en) 2002-05-02 2003-11-03 Filtronic Lk Oy Plane antenna feed arrangement
ATE303003T1 (en) 2002-05-08 2005-09-15 ANTENNA SWITCHABLE BETWEEN SEVERAL FREQUENCY BANDS FOR PORTABLE TERMINALS
US6657595B1 (en) 2002-05-09 2003-12-02 Motorola, Inc. Sensor-driven adaptive counterpoise antenna system
US6765536B2 (en) 2002-05-09 2004-07-20 Motorola, Inc. Antenna with variably tuned parasitic element
GB0212043D0 (en) 2002-05-27 2002-07-03 Sendo Int Ltd Method of connecting an antenna to a pcb and connector there for
KR100616509B1 (en) 2002-05-31 2006-08-29 삼성전기주식회사 Broadband chip antenna
AU2003242453A1 (en) 2002-06-25 2004-01-06 Matsushita Electric Industrial Co., Ltd. Antenna for portable radio
JP3690375B2 (en) 2002-07-09 2005-08-31 日立電線株式会社 Plate-like multi-antenna and electric device provided with the same
ATE324680T1 (en) 2002-07-18 2006-05-15 Benq Corp PIFA ANTENNA WITH ADDITIONAL INDUCTIVITY
FR2843238B1 (en) 2002-07-31 2006-07-21 Cit Alcatel MULTISOURCES ANTENNA, IN PARTICULAR FOR A REFLECTOR SYSTEM
GB0219011D0 (en) 2002-08-15 2002-09-25 Antenova Ltd Improvements relating to antenna isolation and diversity in relation to dielectric resonator antennas
US6950066B2 (en) 2002-08-22 2005-09-27 Skycross, Inc. Apparatus and method for forming a monolithic surface-mountable antenna
FI119667B (en) 2002-08-30 2009-01-30 Pulse Finland Oy Adjustable planar antenna
JP2004104419A (en) 2002-09-09 2004-04-02 Hitachi Cable Ltd Antenna for portable radio
JP3932116B2 (en) 2002-09-13 2007-06-20 日立金属株式会社 ANTENNA DEVICE AND COMMUNICATION DEVICE USING THE SAME
FI114836B (en) 2002-09-19 2004-12-31 Filtronic Lk Oy Internal antenna
JP3672196B2 (en) 2002-10-07 2005-07-13 松下電器産業株式会社 Antenna device
WO2004036778A1 (en) 2002-10-14 2004-04-29 Koninklijke Philips Electronics N.V. Transmit and receive antenna switch
US6836249B2 (en) 2002-10-22 2004-12-28 Motorola, Inc. Reconfigurable antenna for multiband operation
JP3931866B2 (en) 2002-10-23 2007-06-20 株式会社村田製作所 Surface mount antenna, antenna device and communication device using the same
US6734825B1 (en) 2002-10-28 2004-05-11 The National University Of Singapore Miniature built-in multiple frequency band antenna
US6741214B1 (en) 2002-11-06 2004-05-25 Centurion Wireless Technologies, Inc. Planar Inverted-F-Antenna (PIFA) having a slotted radiating element providing global cellular and GPS-bluetooth frequency response
US6774853B2 (en) 2002-11-07 2004-08-10 Accton Technology Corporation Dual-band planar monopole antenna with a U-shaped slot
TW549619U (en) 2002-11-08 2003-08-21 Hon Hai Prec Ind Co Ltd Multi-band antenna
TW547787U (en) 2002-11-08 2003-08-11 Hon Hai Prec Ind Co Ltd Multi-band antenna
TW549620U (en) 2002-11-13 2003-08-21 Hon Hai Prec Ind Co Ltd Multi-band antenna
JP3812531B2 (en) 2002-11-13 2006-08-23 株式会社村田製作所 Surface mount antenna, method of manufacturing the same, and communication apparatus
US6992543B2 (en) 2002-11-22 2006-01-31 Raytheon Company Mems-tuned high power, high efficiency, wide bandwidth power amplifier
EP1573856B1 (en) 2002-11-28 2008-05-28 Research In Motion Limited Multiple-band antenna with patch and slot structures
FI115803B (en) 2002-12-02 2005-07-15 Filtronic Lk Oy Arrangement for connecting an additional antenna to a radio
FI116332B (en) 2002-12-16 2005-10-31 Lk Products Oy Antenna for a flat radio
AU2003285741A1 (en) 2002-12-19 2004-07-14 Xellant Mop Israel Ltd. Antenna with rapid frequency switching
WO2005076407A2 (en) 2004-01-30 2005-08-18 Fractus S.A. Multi-band monopole antennas for mobile communications devices
FI115173B (en) 2002-12-31 2005-03-15 Filtronic Lk Oy Antenna for a collapsible radio
FI115262B (en) 2003-01-15 2005-03-31 Filtronic Lk Oy The multiband antenna
FI113587B (en) 2003-01-15 2004-05-14 Filtronic Lk Oy Internal multiband antenna for radio device, has feed unit connected to ground plane at short-circuit point that divides feed unit into two portions which along with radiating unit and plane resonates in antenna operating range
FI116334B (en) * 2003-01-15 2005-10-31 Lk Products Oy The antenna element
US7023341B2 (en) 2003-02-03 2006-04-04 Ingrid, Inc. RFID reader for a security network
KR20050098883A (en) 2003-02-04 2005-10-12 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Planar high-frequency or microwave antenna
JP2004242159A (en) 2003-02-07 2004-08-26 Ngk Spark Plug Co Ltd High frequency antenna module
FI115261B (en) 2003-02-27 2005-03-31 Filtronic Lk Oy Multi-band planar antenna
US6975278B2 (en) 2003-02-28 2005-12-13 Hong Kong Applied Science and Technology Research Institute, Co., Ltd. Multiband branch radiator antenna element
TW562260U (en) 2003-03-14 2003-11-11 Hon Hai Prec Ind Co Ltd Multi-band printed monopole antenna
FI113811B (en) 2003-03-31 2004-06-15 Filtronic Lk Oy Method of manufacturing antenna components
ITFI20030093A1 (en) 2003-04-07 2004-10-08 Verda Srl CABLE LOCK DEVICE
FI115574B (en) 2003-04-15 2005-05-31 Filtronic Lk Oy Adjustable multi-band antenna
DE10319093B3 (en) 2003-04-28 2004-11-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. antenna device
US7057560B2 (en) 2003-05-07 2006-06-06 Agere Systems Inc. Dual-band antenna for a wireless local area network device
WO2004102733A2 (en) 2003-05-09 2004-11-25 Etenna Coporation Multiband antenna with parasitically-coupled resonators
WO2004100313A1 (en) 2003-05-12 2004-11-18 Nokia Corporation Open-ended slotted pifa antenna and tuning method
JP3855270B2 (en) 2003-05-29 2006-12-06 ソニー株式会社 Antenna mounting method
JP4051680B2 (en) 2003-06-04 2008-02-27 日立金属株式会社 Electronics
US6862441B2 (en) 2003-06-09 2005-03-01 Nokia Corporation Transmitter filter arrangement for multiband mobile phone
JP2005005985A (en) 2003-06-11 2005-01-06 Sony Chem Corp Antenna element and antenna mounting substrate
US6952144B2 (en) 2003-06-16 2005-10-04 Intel Corporation Apparatus and method to provide power amplification
SE525359C2 (en) 2003-06-17 2005-02-08 Perlos Ab The multiband antenna
JP4539038B2 (en) 2003-06-30 2010-09-08 ソニー株式会社 Data communication device
US6925689B2 (en) 2003-07-15 2005-08-09 Jan Folkmar Spring clip
FI115172B (en) * 2003-07-24 2005-03-15 Filtronic Lk Oy Antenna arrangement for connecting an external device to a radio device
GB0317305D0 (en) 2003-07-24 2003-08-27 Koninkl Philips Electronics Nv Improvements in or relating to planar antennas
US7053841B2 (en) 2003-07-31 2006-05-30 Motorola, Inc. Parasitic element and PIFA antenna structure
US7148851B2 (en) 2003-08-08 2006-12-12 Hitachi Metals, Ltd. Antenna device and communications apparatus comprising same
GB0319211D0 (en) 2003-08-15 2003-09-17 Koninkl Philips Electronics Nv Antenna arrangement and a module and a radio communications apparatus having such an arrangement
JP2005079968A (en) 2003-09-01 2005-03-24 Alps Electric Co Ltd Antenna system
JP2005079970A (en) 2003-09-01 2005-03-24 Alps Electric Co Ltd Antenna system
FI116333B (en) 2003-09-11 2005-10-31 Lk Products Oy A method for mounting a radiator in a radio apparatus and a radio apparatus
FI120606B (en) 2003-10-20 2009-12-15 Pulse Finland Oy Internal multi-band antenna
FI120607B (en) 2003-10-31 2009-12-15 Pulse Finland Oy The multi-band planar antenna
SE0302979D0 (en) 2003-11-12 2003-11-12 Amc Centurion Ab Antenna device and portable radio communication device including such an antenna device
JP2005150937A (en) 2003-11-12 2005-06-09 Murata Mfg Co Ltd Antenna structure and communication apparatus provided with the same
US7382319B2 (en) 2003-12-02 2008-06-03 Murata Manufacturing Co., Ltd. Antenna structure and communication apparatus including the same
FI121037B (en) 2003-12-15 2010-06-15 Pulse Finland Oy Adjustable multiband antenna
WO2005062416A1 (en) 2003-12-18 2005-07-07 Mitsubishi Denki Kabushiki Kaisha Portable radio machine
TWI254488B (en) 2003-12-23 2006-05-01 Quanta Comp Inc Multi-band antenna
GB2409582B (en) 2003-12-24 2007-04-18 Nokia Corp Antenna for mobile communication terminals
JP3805772B2 (en) * 2004-01-13 2006-08-09 株式会社東芝 ANTENNA DEVICE AND PORTABLE RADIO COMMUNICATION DEVICE
JP4705331B2 (en) 2004-01-21 2011-06-22 株式会社東海理化電機製作所 COMMUNICATION DEVICE AND VEHICLE CONTROL DEVICE HAVING THE COMMUNICATION DEVICE
US7042403B2 (en) 2004-01-23 2006-05-09 General Motors Corporation Dual band, low profile omnidirectional antenna
US7417588B2 (en) 2004-01-30 2008-08-26 Fractus, S.A. Multi-band monopole antennas for mobile network communications devices
KR100584317B1 (en) 2004-02-06 2006-05-26 삼성전자주식회사 Antenna apparatus for portable terminal
JP4444683B2 (en) 2004-02-10 2010-03-31 株式会社日立製作所 Semiconductor chip having coiled antenna and communication system using the same
JP4301034B2 (en) 2004-02-26 2009-07-22 パナソニック株式会社 Wireless device with antenna
JP2005252661A (en) 2004-03-04 2005-09-15 Matsushita Electric Ind Co Ltd Antenna module
FI20040584A (en) 2004-04-26 2005-10-27 Lk Products Oy Antenna element and method for making it
JP4003077B2 (en) 2004-04-28 2007-11-07 株式会社村田製作所 Antenna and wireless communication device
WO2005109569A1 (en) 2004-05-12 2005-11-17 Yokowo Co., Ltd. Multi-band antenna, circuit substrate, and communication device
NZ551007A (en) 2004-05-18 2010-12-24 Auckland Uniservices Ltd Heat exchanger, typically for cooling aluminium reduction cell, with radiant and convective heat transfer within conduit
TWI251956B (en) 2004-05-24 2006-03-21 Hon Hai Prec Ind Co Ltd Multi-band antenna
DE102004026133A1 (en) 2004-05-28 2005-12-29 Infineon Technologies Ag Transmission arrangement, receiving arrangement, transceiver and method for operating a transmission arrangement
FI118748B (en) 2004-06-28 2008-02-29 Pulse Finland Oy A chip antenna
EP1763905A4 (en) 2004-06-28 2012-08-29 Pulse Finland Oy Antenna component
FR2873247B1 (en) 2004-07-15 2008-03-07 Nortel Networks Ltd RADIO TRANSMITTER WITH VARIABLE IMPEDANCE ADAPTATION
US7345634B2 (en) 2004-08-20 2008-03-18 Kyocera Corporation Planar inverted “F” antenna and method of tuning same
TWI277237B (en) 2004-09-21 2007-03-21 Ind Tech Res Inst Integrated mobile communication antenna
US7292200B2 (en) 2004-09-23 2007-11-06 Mobile Mark, Inc. Parasitically coupled folded dipole multi-band antenna
KR100638621B1 (en) 2004-10-13 2006-10-26 삼성전기주식회사 Broadband internal antenna
US7193574B2 (en) 2004-10-18 2007-03-20 Interdigital Technology Corporation Antenna for controlling a beam direction both in azimuth and elevation
US7692543B2 (en) 2004-11-02 2010-04-06 Sensormatic Electronics, LLC Antenna for a combination EAS/RFID tag with a detacher
FI20041455A (en) 2004-11-11 2006-05-12 Lk Products Oy The antenna component
TWI242310B (en) 2004-12-31 2005-10-21 Advanced Connectek Inc A dual-band planar inverted-f antenna with a branch line shorting strip
CN103022704B (en) * 2005-01-27 2015-09-02 株式会社村田制作所 Antenna and Wireless Telecom Equipment
FI121520B (en) 2005-02-08 2010-12-15 Pulse Finland Oy Built-in monopole antenna
US8378892B2 (en) 2005-03-16 2013-02-19 Pulse Finland Oy Antenna component and methods
US7274334B2 (en) 2005-03-24 2007-09-25 Tdk Corporation Stacked multi-resonator antenna
US7760146B2 (en) 2005-03-24 2010-07-20 Nokia Corporation Internal digital TV antennas for hand-held telecommunications device
EP1911122A2 (en) 2005-04-14 2008-04-16 Fractus, S.A. Antenna contacting assembly
FI20055353A0 (en) 2005-06-28 2005-06-28 Lk Products Oy Internal multi-band antenna
US7205942B2 (en) 2005-07-06 2007-04-17 Nokia Corporation Multi-band antenna arrangement
KR100771775B1 (en) 2005-07-15 2007-10-30 삼성전기주식회사 Perpendicular array internal antenna
FI20055420A0 (en) 2005-07-25 2005-07-25 Lk Products Oy Adjustable multi-band antenna
US7176838B1 (en) 2005-08-22 2007-02-13 Motorola, Inc. Multi-band antenna
TWI314375B (en) 2005-08-22 2009-09-01 Hon Hai Prec Ind Co Ltd Electrical connector
US7289064B2 (en) 2005-08-23 2007-10-30 Intel Corporation Compact multi-band, multi-port antenna
FI119535B (en) 2005-10-03 2008-12-15 Pulse Finland Oy Multiple-band antenna
FI119009B (en) 2005-10-03 2008-06-13 Pulse Finland Oy Multiple-band antenna
FI20055544L (en) 2005-10-07 2007-04-08 Polar Electro Oy Procedures, performance meters and computer programs for determining performance
FI118872B (en) 2005-10-10 2008-04-15 Pulse Finland Oy Built-in antenna
FI118782B (en) 2005-10-14 2008-03-14 Pulse Finland Oy Adjustable antenna
GB2437728A (en) 2005-10-17 2007-11-07 Eques Coatings Coating for Optical Discs
JP2007123982A (en) 2005-10-25 2007-05-17 Sony Ericsson Mobilecommunications Japan Inc Multiband compatible antenna system and communication terminal
US7381774B2 (en) 2005-10-25 2008-06-03 Dupont Performance Elastomers, Llc Perfluoroelastomer compositions for low temperature applications
US7388543B2 (en) 2005-11-15 2008-06-17 Sony Ericsson Mobile Communications Ab Multi-frequency band antenna device for radio communication terminal having wide high-band bandwidth
FI119577B (en) 2005-11-24 2008-12-31 Pulse Finland Oy The multiband antenna component
US7439929B2 (en) 2005-12-09 2008-10-21 Sony Ericsson Mobile Communications Ab Tuning antennas with finite ground plane
CN1983714A (en) 2005-12-14 2007-06-20 三洋电机株式会社 Multi-band terminal antenna and antenna system therewith
US20070152881A1 (en) 2005-12-29 2007-07-05 Chan Yiu K Multi-band antenna system
FI119010B (en) 2006-01-09 2008-06-13 Pulse Finland Oy RFID antenna
US7330153B2 (en) 2006-04-10 2008-02-12 Navcom Technology, Inc. Multi-band inverted-L antenna
US7432860B2 (en) 2006-05-17 2008-10-07 Sony Ericsson Mobile Communications Ab Multi-band antenna for GSM, UMTS, and WiFi applications
US7616158B2 (en) 2006-05-26 2009-11-10 Hong Kong Applied Science And Technology Research Institute Co., Ltd. Multi mode antenna system
FI118837B (en) 2006-05-26 2008-03-31 Pulse Finland Oy dual Antenna
US7764245B2 (en) 2006-06-16 2010-07-27 Cingular Wireless Ii, Llc Multi-band antenna
US7710325B2 (en) 2006-08-15 2010-05-04 Intel Corporation Multi-band dielectric resonator antenna
US20080059106A1 (en) 2006-09-01 2008-03-06 Wight Alan N Diagnostic applications for electronic equipment providing embedded and remote operation and reporting
US7671804B2 (en) 2006-09-05 2010-03-02 Apple Inc. Tunable antennas for handheld devices
US7724204B2 (en) 2006-10-02 2010-05-25 Pulse Engineering, Inc. Connector antenna apparatus and methods
CN101174730B (en) 2006-11-03 2011-06-22 鸿富锦精密工业（深圳）有限公司 Printing type antenna
US7889139B2 (en) 2007-06-21 2011-02-15 Apple Inc. Handheld electronic device with cable grounding
KR100856310B1 (en) 2007-02-28 2008-09-03 삼성전기주식회사 Mobile-communication terminal
FI20075269A0 (en) 2007-04-19 2007-04-19 Pulse Finland Oy Method and arrangement for antenna matching
US7830327B2 (en) 2007-05-18 2010-11-09 Powerwave Technologies, Inc. Low cost antenna design for wireless communications
FI120427B (en) 2007-08-30 2009-10-15 Pulse Finland Oy Adjustable multiband antenna
FI124129B (en) 2007-09-28 2014-03-31 Pulse Finland Oy Dual antenna
US7963347B2 (en) 2007-10-16 2011-06-21 Schlumberger Technology Corporation Systems and methods for reducing backward whirling while drilling
US20090153412A1 (en) 2007-12-18 2009-06-18 Bing Chiang Antenna slot windows for electronic device
FI20085067L (en) 2008-01-29 2009-07-30 Pulse Finland Oy Planar antenna contact spring and antenna
JP2009182883A (en) 2008-01-31 2009-08-13 Toshiba Corp Mobile terminal
US20120119955A1 (en) 2008-02-28 2012-05-17 Zlatoljub Milosavljevic Adjustable multiband antenna and methods
US7633449B2 (en) 2008-02-29 2009-12-15 Motorola, Inc. Wireless handset with improved hearing aid compatibility
KR101452764B1 (en) 2008-03-25 2014-10-21 엘지전자 주식회사 Portable terminal
US7804453B2 (en) 2008-04-16 2010-09-28 Apple Inc. Antennas for wireless electronic devices

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1439601A1 (en) * 2003-01-15 2004-07-21 Filtronic LK Oy Internal multiband antenna
WO2005034286A1 (en) * 2003-10-09 2005-04-14 Lk Products Oy Cover structure for a radio device
WO2008059106A1 (en) * 2006-11-15 2008-05-22 Pulse Finland Oy Internal multi-band antenna
WO2010122220A1 (en) * 2009-04-22 2010-10-28 Pulse Finland Oy Internal monopole antenna

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2608314A2 (en) 2011-12-20 2013-06-26 Pulse Finland Oy Loosely-coupled radio antenna apparatus and methods
EP2608314A3 (en) * 2011-12-20 2013-12-25 Pulse Finland Oy Loosely-coupled radio antenna apparatus and methods
US9531058B2 (en) 2011-12-20 2016-12-27 Pulse Finland Oy Loosely-coupled radio antenna apparatus and methods
EP2720314A1 (en) * 2012-10-11 2014-04-16 BlackBerry Limited Antenna wrapped around to speaker lid
US9077074B2 (en) 2012-10-11 2015-07-07 Blackberry Limited Antenna wrapped around to speaker lid
WO2014147027A1 (en) * 2013-03-20 2014-09-25 Aviwest Antenna formed by at least two radiating strands and a ground plane
FR3003698A1 (en) * 2013-03-20 2014-09-26 Aviwest ANTENNA CONSISTING OF AT LEAST TWO RADIANT BRINS AND A MASS PLAN.

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US9246210B2 (en) 2016-01-26
US20130127674A1 (en) 2013-05-23

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