CN1172555A - Antenna - Google Patents
Antenna Download PDFInfo
- Publication number
- CN1172555A CN1172555A CN96191551A CN96191551A CN1172555A CN 1172555 A CN1172555 A CN 1172555A CN 96191551 A CN96191551 A CN 96191551A CN 96191551 A CN96191551 A CN 96191551A CN 1172555 A CN1172555 A CN 1172555A
- Authority
- CN
- China
- Prior art keywords
- antenna
- conductor
- spiral type
- antenna element
- state
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
-
- 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
- H01Q1/244—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 extendable from a housing along a given path
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
Abstract
When the antenna element is expanded, a helical element(4)acts as a parasitic element, and a high-frequency current flows through an element conductor(3), causing the helical element(4)to act as a parasitic element which is excited by a high frequency wave way. When the antenna element is housed, electrical energy is fed to the upper end of the helical element(4)from the upper end of an upper conductor section(6), and the overlapping parts of the helical element(4)and conductor section(6)form an L-C parallel resonance circuit. Therefore, the antenna performs a two-resonance operation.
Description
The present invention relates to a kind of antenna that is arranged at the free sliding on the housing, be specially adapted to portable radio telephone set.
The summary of existing this antenna is shown in Fig. 5 (A), (B).A type antenna shown in Fig. 5 (A) is opened the scheme that flat 6-216630 communique is proposed as the spy, is made of the antenna element and the spiral type element 104 of the insulation division 106 that is arranged at conductor element 103 upper ends.Antenna element can slide in spiral type element 104 and take in housing 100, and the antenna element that takes in can be from housing 100 elongations.Spiral type element 104 is fixedly set in the upper end protuberance of housing 100.
The antenna element of this antenna is slided elongation back state shown in Fig. 5 (A) (a).In this case, the signal that the signal source 102 in housing 100 produces is supplied with power supply 105 by match circuit (MC) 101.Power supply 105 becomes to be electrically connected with conductor element 103 lower ends and spiral type element 104 lower ends, and therefore, conductor element 103 and spiral type element 104 are in running order.
On the other hand, antenna element is taken in the state in the housing 100 shown in Fig. 5 (A) (b) by slip.In this case, the signal that the signal sources 102 in housing 100 produce is supplied with power supply 105 through match circuit (MC) 101, and at this moment, 105 of power supplies become electrical connection with spiral type element 104 lower ends, thereby, have only spiral type element 104 in running order.
In this case, for spiral type element 104 is not subjected to the influence of antenna element, make the insulation division 106 that forms in the antenna element upper end be arranged in spiral type element 104.
Also have, constitute the summary of different existing Type B antennas shown in Fig. 5 (B) with above-mentioned antenna.This antenna such as spy open the scheme that flat 2-271701 communique is proposed, and constitute by being positioned at antenna element and the spiral type element 104 that coiled type conductor element 103 top and bottom are provided with insulation division 106.Antenna element can slide in spiral type element 104 and can take in housing 100, and the antenna element that takes in can be from housing 100 elongations.
Also have, spiral type element 104 is fixedly set in the protuberance of housing upper end.
State when the antenna element of this antenna is slided elongation is shown in Fig. 5 (B) (a).In this case, the signal that the signal source 102 in housing 100 produces is supplied with power supply 105 by match circuit (MC) 101.Power supply 105 becomes electricity to join with spiral type element 104 lower ends, and spiral type element 104 is by exciting.Because of spiral type element 104 and coiled type conductor element 103 is the induction coupling, spiral type element 104 is by exciting, thereby the conductor element 103 that becomes the induction coupling is also by exciting.
So antenna element and spiral type element 104 are in running order.And, at this moment make the insulation division 106 that forms in the antenna element lower end be arranged in spiral type element 104.
Also have, antenna element slides and takes in state in the housing 100 shown in Fig. 5 (B) (b).In this case, the signal that the signal source 102 in housing 100 produces is supplied with power supply 105 by match circuit (MC) 101, and the spiral type element 104 that is connected with power supply 105 is just in running order.At this moment, coiled type conductor element 103 is taken in housing 100, is in non operating state.
In this case, for spiral type element 104 is not subjected to the influence of antenna element, make the insulation division 106 that forms in the antenna element upper end be arranged in spiral type element 104.
Below, describe with regard to the work of antenna.In above-mentioned existing A type antenna, when antenna element was extended, conductor element 103 was connected in parallel for 104 one-tenth with the spiral type element.At this moment, spiral type element 104 has played and has been equivalent to the effect that increases conductor element 103 diameters, and frequency impedance characteristic just will show wideer frequency band than single conductor element 103 as a result.At this moment the characteristic of frequency and voltage standing wave ratio (VSWR) is shown in Fig. 3 (a) A type, and is identical because the resonance frequency of spiral type element 104 and conductor element 103 is set at, so have only single resonance characteristics.
Also have, in existing A type antenna, when antenna element is taken in, have only 104 work of spiral type element, form L-C resonance series antenna.So the spy of frequency at this moment and voltage standing wave ratio (VSWR) gives birth to as Fig. 3 (b) A, Type B are represented has only single resonance characteristics.
In above-mentioned existing Type B antenna, when antenna element was extended, spiral type element 104 was connected with power supply.At this moment, spiral type element 104 is coupled high-frequency ground exciting conductor element 103 with conductor element 103 inductions of no power supply state.The characteristic of frequency at this moment and voltage standing wave ratio (VSWR) is shown in Fig. 3 (a) Type B, and the resonance frequency of spiral type element 104 and conductor element 103 is set at identical, so have only single resonance characteristics.
Also have, in existing Type B antenna, when antenna element is taken in, have only 104 work of spiral type element, form L-C resonance series antenna.So the frequency of this moment and the characteristic of voltage standing wave ratio (VSWR) have only single resonance characteristics as Fig. 3 (b) A, Type B are represented.
In pocket telephone, shown in Fig. 3 frequency axis, the frequency range that the reception frequency allocation of the transmit frequency band of mobile radio station and mobile radio station is having nothing in common with each other.So the antenna of pocket telephone must have the characteristic that covers transmit frequency band and receive frequency range.
But as shown in Figure 3, existing A type and Type B antenna are because the both has only single resonance characteristics when extending and takeing in, so exist the problem that can not cover transmit frequency band and receive the characteristic that frequency range was fit to.
, the objective of the invention is for this reason, provide a kind of when extending and takeing in, can cover transmit frequency band that is distributed in the frequency range that has nothing in common with each other and the antenna that receives frequency range.
In order to reach above-mentioned purpose, antenna of the present invention is, by after with insulation division, being connected to the antenna element of upper conductor and the antenna that the spiral type element is formed on conductor element top, described antenna element can stretch in described helical antenna and freely slide, described antenna element is when elongation state, the bottom of this antenna element becomes power supply state, described antenna element is when takeing in state, the upper end of described spiral type element is connected with the upper end of described upper conductor, and described upper conductor lower end becomes power supply state simultaneously.
Also have, in described antenna, can be free to slide in the support conductor that links to each other with circuit of described antenna element in housing, described antenna element is when elongation state, the lower end of this antenna element and described support conductor join, described antenna element is when takeing in state, and the lower end of described upper conductor is connected with described support conductor.And then when antenna element extends and when takeing in, described antenna element and described spiral type element are worked as the double resonance antenna.
If use antenna of the present invention, because the antenna of being made up of antenna element and spiral type element becomes the work of double resonance antenna, so in when elongation and when takeing in, antenna can obtain covering transmit frequency band that is distributed in the frequency range that has nothing in common with each other and the characteristic that receives frequency range.
Below accompanying drawing is done simple declaration.
Fig. 1 (a) is the structural outline figure of embodiment when extending of expression antenna of the present invention; Fig. 1 (b) is the structural outline figure of embodiment when takeing in of expression antenna of the present invention.
Fig. 2 (a) is embodiment detailed structure exemplary plot when extending of expression antenna of the present invention; Fig. 2 (b) is the exemplary plot of embodiment detailed structure when takeing in of expression antenna of the present invention.
Fig. 3 (a) is frequency and voltage standing wave ratio (VSWR) performance plot when extending for expression antenna of the present invention and existing antenna; Fig. 3 (b) is expression antenna of the present invention and frequency and voltage standing wave ratio (VSWR) performance plot of existing antenna when takeing in.
Fig. 4 is other detailed structure exemplary plot of expression antenna embodiment of the present invention.
Fig. 5 (a) is the structural outline figure of the existing A type antenna of expression; Fig. 5 (b) is the structural outline figure of the existing Type B antenna of expression.
In order to illustrate in greater detail the present invention, describe according to accompanying drawing.
Fig. 1 (a) and (b) are represented the summary of the embodiment structure of antenna of the present invention.In Fig. 1 (a) and (b), antenna is made up of the antenna element and the spiral type element 4 that are connected to upper conductor 6 on conductor element 3 tops after with insulation division 8.
In this antenna, antenna element can be slided in spiral type element 4 also can in housing 10, freely stretch, Fig. 1 (b) expression antenna element takes in the state in the housing 10, and Fig. 1 (a) expression antenna element is from the state of housing 10 elongations.And spiral type element 4 is fixedly set in the housing 10 upper end protuberances.
Under the situation of the antenna element of this antenna elongation, the signal that the signal sources 2 in housing 10 produce is supplied with power supply 5 by match circuit (MC) 1.Power supply 5 becomes electricity to join with conductor element 3 lower ends, and conductor element 3 is just in running order.At this moment, spiral type element 4 be not connected Anywhere, become no power supply state, spiral type element 4 by the high-frequency current of conductor element 3 by high-frequency excitation.
Also have, under the state of antenna element in takeing in housing 10 shown in Fig. 1 (b), the signal that the signal source 2 in the housing 10 produces is supplied with power supply 5 by match circuit (MC) 1, and power supply 5 becomes electricity to join with the lower end of the upper conductor 6 of antenna element upper end.And the upper end of spiral type element 4 becomes electricity to join at tie point 7 places of upper conductor 6 upper ends.So spiral type element 4 is driven by upper conductor 6.
At this moment, conductor element 3 is because the insulation of insulation division 8 and upper conductor 6 is in non operating state.
Next, just the work of antenna of the present invention describes.Under the state of antenna element elongation, conductor element 3 joins exciting conductor element 3 with power supply 5.At this moment, spiral type element 4 passes through the high-frequency current of conductor element 3 by high-frequency excitation, play a role as parasitic antenna, for example if the resonance frequency of spiral type element 4 is set at the centre frequency that mobile radio station receives frequency range, the resonance frequency of conductor element 3 is set at the centre frequency of mobile radio station transmit frequency band, then just can obtain the double resonance characteristic in frequency impedance characteristic.
That is to say that the characteristic of the frequency of antenna and voltage standing wave ratio (VSWR) during elongation indicates shown in the presently as Fig. 3 (a), become to cover and distribute to the double resonance characteristic that mobile radio station transmit frequency band and mobile radio station receive frequency range.
Also have, in antenna of the present invention, under the state that antenna element takes in, upper conductor 6 is joined with power supply 5, and the upper end of upper conductor 6 and spiral type element 4 join, so the part that coincides at upper conductor 6 and spiral type element 4 produces distributed capacitance.Therefore, constitute the L-C tank circuit, can obtain other the different resonance frequencys of natural reonant frequency that have with upper conductor 6.Therefore, can obtain the double resonance characteristic.
That is to say that the characteristic of the frequency of antenna and voltage standing wave ratio (VSWR) when takeing in indicates shown in the presently as Fig. 3 (b), also become under this state to cover and distribute to the double resonance characteristic that mobile radio station transmit frequency band and mobile radio station receive frequency range.
As mentioned above, antenna of the present invention makes conductor element 3 different with the resonance frequency of spiral type element 4, in when elongation and when takeing in, be in and cover the double resonance operating state that mobile radio station transmit frequency band and mobile radio station receive frequency range, its constitute in detail one for example shown in Fig. 2 (a) and (b).
Fig. 2 (a) is for representing that antenna element is from housing 10 elongation state figure.The state diagram that Fig. 2 (b) takes in housing 10 for the expression antenna element.
Antenna element shown in Fig. 2 (a) and (b) forms the antenna cap 13 with insulating properties at the tip, thus the antenna cap 13 extension lower end periphery intercalation upper conductor 6 of extending downwards.The extension lower end of antenna cap 13 is protruded by the lower end of upper conductor 6, makes the extension of protrusion and the upper end compression moulding of conductor element 3 be integral body.
The periphery of this conductor element 3 of insulated tube 9 intercalations embeds stop conductor 11 on the lower end of conductor element 3 insulated tube 9,11 one-tenth electricity of conductor element 3 and stop conductor join.
This antenna element connects and inserts in the spiral type element 4 that takes in housing 10 outside protuberances, and the support conductor 12 that is fixed on the housing 10 is inserted in the perforation of free sliding ground.1 one-tenth electricity of this support conductor 12 and match circuit joins, and match circuit 1 joins with signal source 2.
This signal source 2 is equivalent to be arranged on the terminal part of the emission part in the housing 10 when antenna transmits; When antenna receiving signal, signal source 2 is equivalent to supply with the received signal that is arranged on the acceptance division in the housing 10.
Shown in Fig. 2 (a), during the antenna element elongation, stop conductor 11 intercalations of embedded conductor element 3 lower ends are at support conductor 12 and become electricity to join, and therefore, join with conductor element 3 by support conductor 12, stop conductor 11 by the signal source 2 that match circuit 1 is connected.At this moment, owing to flow into the high-frequency current of conductor element 3, with 3 one-tenth high-frequency coupling of spiral type element 4 and conductor element of the no power supply state that does not join Anywhere, spiral type element 4 is as parasitic antenna work.
And because of the effect of insulation division 8, upper conductor 6 does not have the function of antenna.
Also have, shown in Fig. 2 (b), when antenna element took in housing 10, antenna cap 13 was dashed with housing 10 outside protuberances and is closed, and upper conductor 6 connects to be inserted in the spiral type element 4, and its lower end intercalation is at support conductor 12 and become electricity to join.So, join by the lower end of support conductor 12 with upper conductor 6 by the signal source 2 that match circuit 1 is connected.At this moment, the upper end of the upper end of upper conductor 6 and spiral type element 4 joins, and high-frequency current flows into upper conductor 6 and spiral type element 4.
And because of the effect of insulation division 8, conductor element 3 is in non operating state.So the part that upper conductor 6 and spiral type element 4 coincide constitutes the L-C tank circuit.
Secondly, Fig. 4 represents another example of antenna detailed structure of the present invention.Antenna shown in this figure is compared with the antenna structure that Fig. 2 (a) and (b) are represented, not integration and different on the independent this point that constitutes of housing 10.Because identical with the antenna shown in above-mentioned Fig. 2 (a) and (b) about the antenna working forms, omit its detailed description, describe with regard to above-mentioned difference.
Fig. 4 represents the antenna element elongation state, inserts the lower end that is assemblied in the conductor element 3 in the insulated tube 9 and becomes the electric stop conductor 11 that joins, and dashes the lower end that is combined in support conductor 12.At this moment, support conductor 12 joins with conductor element 3, and conductor element 3 joins with match circuit 1 grade that is built in the housing 10.
Owing to flow into the high-frequency current of conductor element 3, and with the spiral type element 4 of the no power supply state of conductor element 3 high-frequency coupling, be assemblied in and use in the spiral type element protection cover 14 that resin etc. makes.This spiral type element protection cover 14 is fixed in the top of support conductor 12.
When on housing 10, the antenna that so constitutes being installed, utilize the installation threaded portion 12-1 that forms in the bottom of support conductor 12, can on housing 10, install.
Also have, in the invention described above antenna, have flexibility,, also can prevent the damage that fractures of antenna element even the antenna element of elongation and barrier bump against because conductor element 3, is insulated the conductor element 3 of pipe 9 parcels by the rubber-like material.
And in when elongation with when takeing in, the working method of antenna can be set at the arbitrary dimension of about 1/4 wavelength to about 1/2 wavelength.In this case, near the condition of 1/4 wavelength the time, can omit match circuit 1.
As mentioned above, antenna of the present invention constitutes by the resonance frequency of conductor element is different with the resonance frequency of spiral type element, so, when the spiral type element becomes no power supply state, play a role as parasitic antenna, be in the double resonance operating state; And when powering up for the spiral type element, the part that upper conductor and spiral type element coincide forms the L-C tank circuit, is in the double resonance operating state.
Therefore, antenna of the present invention can be applicable to portable machine, particularly portable radio telephone set as covering the double resonance antenna that mobile radio station transmit frequency band and mobile radio station receive frequency range in when elongation with when takeing in.
Statement according to the 19th of treaty
Claim 1 is clear and definite antenna element is when elongation and when takeing in, and antenna element and spiral type element are worked and simultaneously as the work of double resonance antenna.
Each quotes the routine antenna that did not all disclose as the work of double resonance antenna.
Claims
Modification according to the 19th of treaty
1. antenna, form by the antenna element and the spiral type element that are connected to upper conductor on the top of conductor element after with insulation division, it is characterized in that described antenna element can stretch in described helical antenna freely slides, described antenna element is when elongation state, the bottom of this antenna element becomes power supply state, the described helical antenna that is in no power supply state is then by described antenna element high-frequency excitation, described antenna element is when takeing in state, the upper end of described spiral type element is connected with the upper end of the described upper conductor that its lower end has powered, the part that described upper conductor and described helical antenna coincide forms tank circuit, therefore, described antenna element is in when elongation with when takeing in, and described antenna element and described spiral type element are worked as the double resonance antenna.
2. antenna according to claim 1, it is characterized in that to be free to slide in the support conductor that links to each other with circuit of described antenna element in housing, described antenna element is when elongation state, the lower end of this antenna element and described support conductor join, described antenna element is when takeing in state, and the lower end of described upper conductor and described support conductor join.
Claims (3)
1. antenna, form by the antenna element and the spiral type element that are connected to upper conductor on the top of conductor element after with insulation division, it is characterized in that described antenna element can stretch in described helical antenna freely slides, described antenna element is when elongation state, the bottom of this antenna element becomes power supply state, described antenna element is when takeing in state, and the upper end of described spiral type element is connected with the upper end of described upper conductor, and the lower end of described upper conductor becomes power supply state.
2. antenna according to claim 1, it is characterized in that to be free to slide in the support conductor that links to each other with circuit of described antenna element in housing, described antenna element is when elongation state, the lower end of this antenna element and described support conductor join, described antenna element is when takeing in state, and the lower end of described upper conductor and described support conductor join.
3. antenna according to claim 1 and 2 is characterized in that antenna element in when elongation with when takeing in, and described antenna element and described spiral type element are worked as the double resonance antenna.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP326249/95 | 1995-11-22 | ||
| JP32624995A JP3431379B2 (en) | 1995-11-22 | 1995-11-22 | antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1172555A true CN1172555A (en) | 1998-02-04 |
Family
ID=18185668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96191551A Pending CN1172555A (en) | 1995-11-22 | 1996-11-12 | Antenna |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0805506A1 (en) |
| JP (1) | JP3431379B2 (en) |
| KR (1) | KR19980701595A (en) |
| CN (1) | CN1172555A (en) |
| TW (1) | TW351023B (en) |
| WO (1) | WO1997019488A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103124002A (en) * | 2012-12-30 | 2013-05-29 | 上海安费诺永亿通讯电子有限公司 | Multiband wide-band antenna for mobile terminal |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09199922A (en) * | 1996-01-12 | 1997-07-31 | Kyocera Corp | Antenna system |
| JP2000269714A (en) * | 1999-03-12 | 2000-09-29 | Nec Corp | Antenna device for portable radio equipment |
| US6417808B1 (en) | 2000-03-07 | 2002-07-09 | Nec Corporation | Transceiver including antenna apparatus which is compactly accommodated in body of transceiver |
| JP3774136B2 (en) * | 2000-10-31 | 2006-05-10 | 三菱マテリアル株式会社 | Antenna and radio wave transmission / reception device using the same |
| JP2005176302A (en) | 2003-09-26 | 2005-06-30 | Nec Access Technica Ltd | Antenna assembly of portable terminal, and wireless installation capable of receiving broadcast wave |
| KR20060129773A (en) * | 2005-06-13 | 2006-12-18 | 삼성전자주식회사 | Antenna apparatus for portable terminal |
| CN112086731B (en) * | 2020-09-16 | 2021-11-19 | 珠海格力电器股份有限公司 | Communication equipment, control method and device of communication equipment and communication system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2989946B2 (en) * | 1991-10-04 | 1999-12-13 | 京セラ株式会社 | Telescopic telescopic antenna device |
| JPH06216630A (en) * | 1993-01-14 | 1994-08-05 | Nippon Antenna Kk | Expansion whip antenna |
| SE9301761L (en) * | 1993-05-24 | 1994-06-06 | Allgon Ab | Antenna device for portable communication equipment |
-
1995
- 1995-11-22 JP JP32624995A patent/JP3431379B2/en not_active Expired - Fee Related
-
1996
- 1996-10-29 TW TW085113169A patent/TW351023B/en active
- 1996-11-12 KR KR1019970704987A patent/KR19980701595A/en not_active Application Discontinuation
- 1996-11-12 EP EP96937561A patent/EP0805506A1/en not_active Withdrawn
- 1996-11-12 CN CN96191551A patent/CN1172555A/en active Pending
- 1996-11-12 WO PCT/JP1996/003315 patent/WO1997019488A1/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103124002A (en) * | 2012-12-30 | 2013-05-29 | 上海安费诺永亿通讯电子有限公司 | Multiband wide-band antenna for mobile terminal |
| CN103124002B (en) * | 2012-12-30 | 2015-06-24 | 上海安费诺永亿通讯电子有限公司 | Multiband wide-band antenna for mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980701595A (en) | 1998-05-15 |
| WO1997019488A1 (en) | 1997-05-29 |
| TW351023B (en) | 1999-01-21 |
| JP3431379B2 (en) | 2003-07-28 |
| JPH09148827A (en) | 1997-06-06 |
| EP0805506A1 (en) | 1997-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1094664C (en) | Antenna for two frequency bands | |
| CN1107991C (en) | Antenna coupler for portable radiotelephone | |
| FI114586B (en) | flat Antenna | |
| KR100903445B1 (en) | Wireless terminal with a plurality of antennas | |
| WO2009088231A2 (en) | Multi-band internal antenna | |
| CN1661855A (en) | Wireless device having antenna | |
| CN1180944A (en) | Antenna apparatus | |
| CN1647314A (en) | Oriented pifa-type device and method of use for reducing F interference | |
| CN1600016A (en) | Apparatus and method for enhancing low-frequency operation of mobile communication antennas | |
| CN1409570A (en) | Internal multiple frequency antenna with improved radiation effeciency | |
| CN1218308A (en) | Multi-band antenna suitable for use in mobile radio device | |
| CN1914765A (en) | Antenna device and portable radio communication device comprising such an antenna device | |
| CN1304560A (en) | Antenna switch | |
| CN1167299C (en) | Antenna device portable radio communication device using same | |
| CN1681156A (en) | Antenna for portable cellular telephone | |
| CN1386311A (en) | Wireless terminal | |
| CN1172555A (en) | Antenna | |
| CN1258832C (en) | Radio communications device with slot antenna | |
| EP1077505A3 (en) | On-vehicle antenna having wide frequency range | |
| CN1244956A (en) | Dual band antenna | |
| CN1294676C (en) | Portable transceiver antenna | |
| US7106253B2 (en) | Compact antenna device | |
| CN1091548C (en) | Antenna apparatus | |
| CN1399491A (en) | Antenna | |
| CN1316117A (en) | Antenna device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |