EP3154125B1 - Eight-frequency band antenna - Google Patents
Eight-frequency band antenna Download PDFInfo
- Publication number
- EP3154125B1 EP3154125B1 EP16175515.2A EP16175515A EP3154125B1 EP 3154125 B1 EP3154125 B1 EP 3154125B1 EP 16175515 A EP16175515 A EP 16175515A EP 3154125 B1 EP3154125 B1 EP 3154125B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- face
- frequency band
- carrier
- radiator
- frequency
- 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.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- 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
Definitions
- the present invention relates to an antenna, especially to an eight-frequency band antenna for enhancing the frequency response of the low-frequency segment and bandwidth of the high-frequency segment.
- the current commercially available planar inverted-F antenna is generally formed by printing metal material (such as copper) on printed circuit board (PCB) with two-dimensional printing technology. Alternatively, metal membrane is pressed into three-dimensional multi frequency band antenna.
- the multi frequency bands signal transmission/reception can be achieved by changing the two-dimensional radiation patterns or the geometric shape of the three-dimensional radiation bodies.
- the antenna formed on PCB or formed by pressing metal membrane into radiation body need a specific volume to ensure signal transmission/reception quality and prevent signal tuning problem caused by environment.
- the electronic device needs an internal space for arranging the PIFA structure; this causes impact on light weight and compact requirement of the electronic devices.
- the radiation body of the antenna can be fabricated on a rectangular ceramic carrier.
- the carrier 101 of the antenna 10 has a high-frequency radiator 102 and a low-frequency radiator 103 on the surface thereof and the carrier 101 is fixed on the PCB 20.
- the PCB 20 has a ground metal plane 201, a signal feeding micro strip 202 and a ground wire 203 on two faces thereof, where the signal feeding micro strip 202 connects with the ground wire 203 and the radiator of the carrier 101.
- the high-frequency radiator 102 is arranged on the right side of the carrier 101 and the low-frequency radiator 103 is arranged on the left side of the carrier 101.
- the antenna 10 is electrically connected to the PCB 20 and the area of the ground metal plane 201 corresponding to the low-frequency radiator 103 is smaller than the area of the ground metal plane 201 corresponding to the high-frequency radiator 102. Therefore, the low-frequency radiator 103 suffers more to the ground shielding and the frequency response (see label A in Fig. 2 ) is not satisfactory. Moreover, the bandwidth of the high-frequency radiator 102 is not wide enough (only covering 6 bands as shown by label B in Fig. 2 ). As a result, the signal transmission/reception quality is poor and signal transmission/reception bandwidth is limited.
- WO 2014 058926 A1 discloses an antenna capable of operating among all LTE bands, and also capable of operation among all remote side cellular applications, such as GSM, AMPS, GPRS, CDMA, WCDMA, UMTS, and HSPA among others.
- the antenna provides a low-cost alternative to active-tunable antennas suggested in the prior art for the same multi-platform objective.
- US 8 779 988 B2 discloses a surface mount device multiple-band antenna module, which includes a substrate and a carrier.
- the substrate has a first grounding metal surface and a first micro-strip line on a side thereof.
- the first grounding metal surface has a second micro-strip line connected thereto. There is a space between the first micro-strip line and the second micro-strip line.
- the substrate has a second grounding metal surface on the other side thereof.
- the carrier is made of ceramic material with high dielectric constant, which has a first radiative metal portion, a second radiative metal portion and a third radiative metal portion.
- the carrier is electrically connected with the substrate.
- the joint of the first radiative metal portion and the second radiative metal portion is electrically connected to the first micro-strip line.
- the third radiative metal portion is electrically connected to the second micro-strip line.
- the low-frequency segment is corresponding to a smaller area portion of the ground metal face on the PCB when the antenna carrier is fixed to the PCB. Therefore, the low-frequency segment is at a free space to enhance frequency response for the low-frequency segment and the bandwidth for the high-frequency segment.
- the blind holes and the ribs can reduce the overall weight of the carrier 1 and prevent warp of the carrier.
- the area ratio of the blind holes and the volume ratio of the blind holes can be used to adjust the effective dielectric constant of the carrier, thus adjusting resonant frequency and the bandwidth.
- Fig. 3 shows the front perspective view of the carrier of the eight-frequency band antenna according to the present invention
- Fig. 4 shows the top perspective view of the carrier of the eight-frequency band antenna according to the present invention
- Fig. 5 shows the back perspective view of the carrier of the eight-frequency band antenna according to the present invention
- Fig. 6 shows the back perspective viewof the carrier of the eight-frequency band antenna according to the present invention
- Fig. 7 shows expanded view of the metal radiators of the carrier of the eight-frequency band antenna according to the present invention.
- the eight-frequency band antenna according to the present invention comprises a carrier 1, a high-frequency segment 2, and a low-frequency segment 3.
- the carrier 1 is a ceramic rectagular body with a front face 11, a top face 12, a back face 13 and a bottom face 14.
- the front face 11 has a plurality of blind holes 15 defined thereon and each two blind holes have at least one rib 16 therebetween.
- the blind holes 15 and the ribs 16 can reduce the overall weight of the carrier 1 and prevent warp of the carrier 1.
- the area ratio of the blind holes 15 on the front face 11 and the volume ratio of the blind holes 15 with respect to the carrier 1 can be used to adjust the effective dielectric constant of the carrier 1, thus adjusting resonant frequency and the bandwidth.
- the area ratio of the blind holes 15 on the front face 11 is around 30%-50%, and more particularly can be 40%.
- the volume ratio of the blind holes 15 with respect to the carrier 1 is 20%-30% and more particularly can be 24%.
- the shape and the symmetric degree of the blind holes 15 can also be adjusted.
- the high-frequency segment 2 When viewing from the frond face 11 of the carrier 1, the high-frequency segment 2 is arranged on the left side of the carrier 1 and has a double-T shaped radiator 21, a first L-shaped radiator 22, a straight shape radiator 23, a winding radiator 24 and a second L-shaped radiator 25.
- the double-T shaped radiator 21 is arranged on edges of the front face 11, the top face 12, the back face 13 and the bottom face 14, and a is used as fixed point for PCB.
- the bottom of the double-T shaped radiator 21 electrically connects with one end of a short side 221 of the first L-shaped radiator 22, which is arranged on the back face 13.
- the other end of the short side 221 of the first L-shaped radiator 22 electrically connects with the straight shape radiator 23 arranged on the front face 11 and the bottom face 14.
- the straight shape radiator 23 functions as signal feeding point.
- the long side 222 of the first L-shaped radiator 22, which is arranged on the top face 12 and the back face 13 couples to the winding radiator 24, which is arranged on the top face 12 and the back face 13.
- the pitches of the winding radiator 24 are around 0.15 mm -0.3 mm to provide LC resonance with 2400 MHz ⁇ 2700 MHz resonant frequency.
- the second L-shaped radiator 25 is arranged on the front face 11 and the bottom face 14.
- high-frequency segment 2 provides the fourth frequency band, the fifth frequency band, the sixth frequency band, the seventh frequency band and the eighth frequency band.
- the frequency range of the fourth frequency band, the fifth frequency band, the sixth frequency band, the seventh frequency band and the eighth frequency band is between 1710 MHz and 2700 MHz, and can be used in GSM, WCDMA, WIFI, and LTE communication system.
- the low-frequency segment 3 When viewing from the front face 11 of the carrier 1, the low-frequency segment 3 is arranged on the right side of the carrier 1 and has a first rectangular radiation body 31, a second rectangular radiation body 32, a third rectangular radiation body 33 and a fourth rectangular radiation body 34, where each of the rectangular radiation bodies has different area and is respectively arranged on the front face 11, the top face 12, the back face 13 and the bottom face 14 of the carrier 1.
- the third rectangular radiation body 33 provides fixing points with the printed circuit board.
- the low-frequency segment 3 provides the first frequency band, the second frequency band, and the third frequency band.
- the frequency range of the first frequency band, the second frequency band, and the third frequency band is between 700 MHz and 960 MHz, and can be used in LTE and GMS communication system.
- Figs. 8 to 10 show the exploded view, the backside view and the electric connection of the eight-frequency band antenna and the PCB.
- the eight-frequency band antenna further comprises a PCB 4 fixed to the carrier 1 and the PCB has, in connection sequence, a top side 4a, a left slanting side 4b, a bottom slanting side 4c, a right short side 4d, a recessed side 4e and a right long side 4f.
- the PCB 4 hasa first face 41 and a second face 42.
- the first face 41 has a first ground metal face 43 and a micro strip 44.
- the micro strip 44 has a front section 441 and a rear section 442.
- the front section 441 has a through hole 443 and extends into the first ground metal face 43 such that a gap 45 is defined between the front section 441 and the first ground metal face 43. Moreover, the area portion 431 of the first ground metal face 43, which is from the left slanting side 4b to the gap 45, is larger than the area portion 432 of the first ground metal face 43, which is from the recessed side 4e to the gap 45.
- a ground line 46 is extended on the smaller area portion 432 of the first ground metal face 43, which is from the recessed side 4e to the gap 45.
- the ground line 46 is parallel to the rear section 442 of the micro strip 44.
- a separation 47 is defined between the ground line 46 and the rear section 442 of the micro strip 44.
- An inductor 5 is connected between the ground line 46 and the rear section 442 of the micro strip 44 and cross the separation 47 to adjust impedance and provide ground for the antenna, thus forming a PIFA dipole antenna.
- the opened area of the first face 41 has two corresponding fixed ends 48 for fixed connection with the portion 211 of the double-T shaped radiator 21 on the on the botton face 14 and the third rectangular radiation body 33.
- the second face 42 further has a second ground metal face 43', where the through hole 443 is opened to the second ground metal face 43' and electrically connects with a signal feeding end (not shown) of a coaxial cable.
- the second ground metal face 43' electrically connects with the ground end of the coaxial cable.
- the two fixed ends 48 are fixed to the portion 211 of the double-T shaped radiator 21 on the on the botton face 14 and the third rectangular radiation body 33 respectively.
- the straight shape radiator 22 on the bottom face 14 electrically connects the micro strip 44.
- the long side 242 of the L-shaped radiator 24 electrically connects with the ground line 46.
- Fig. 11 shows the reflection loss curve of the ten-frequency band antenna of the prsent invention.
- the low-frequency segment 3 is arranged on the opened area and corresponding to the recessed side 4e of the PCB 4 and the smaller area portion 432 of the first ground metal face 43 such that the low-frequency segment 3 is at a free space with less shielding.
- the eight-frequency band antenna of the prsent invention has better frequency response for the low-frequency segment 3 (mark C) and higher bandwidth for the high-frequency segment 2 (mark D).
- the low-frequency segment 3 provides the first frequency band, the second frequency band, and the third frequency band.
- the frequency range of the first frequency band, the second frequency band, and the third frequency band is between 700MHZ and 960MHZ, and can be used in LTE and GMS communication.
- the high-frequency segment 2 provides the fourth frequency band, the fifth frequency band, and the sixth frequency band with frequency range between 1710 MHz and 2710 MHz and can be used in GSM and WCDMA communication.
- the high-frequency segment 2 provides the seventh frequency band with frequency range 2400 MHz ⁇ 2500 MHz and used in WIFI communication and the eighth frequency band with frequency range 2600 MHz ⁇ 2700 MHz used in LTE communication.
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW104132780A TWI563735B (en) | 2015-10-06 | 2015-10-06 | Eight-frequency band antenna |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3154125A1 EP3154125A1 (en) | 2017-04-12 |
EP3154125B1 true EP3154125B1 (en) | 2020-04-08 |
Family
ID=56148282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16175515.2A Active EP3154125B1 (en) | 2015-10-06 | 2016-06-21 | Eight-frequency band antenna |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3154125B1 (zh) |
TW (1) | TWI563735B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US12034231B2 (en) | 2023-05-01 | 2024-07-09 | Taoglas Group Holdings Limited | Multi-frequency band antenna |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10283854B2 (en) | 2012-10-08 | 2019-05-07 | Taoglas Group Holdings Limited | Low-cost ultra wideband LTE antenna |
US20170149136A1 (en) | 2015-11-20 | 2017-05-25 | Taoglas Limited | Eight-frequency band antenna |
US9755310B2 (en) | 2015-11-20 | 2017-09-05 | Taoglas Limited | Ten-frequency band antenna |
CN107123853B (zh) * | 2017-05-20 | 2019-06-25 | 中国计量大学 | 一种兼顾导航频段的小尺寸八频段wwan/lte手机天线 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201440454U (zh) * | 2009-05-08 | 2010-04-21 | 美磊科技股份有限公司 | 天线结构改良 |
KR101714537B1 (ko) * | 2010-11-24 | 2017-03-09 | 삼성전자주식회사 | 미모 안테나 장치 |
TWI463738B (zh) * | 2011-01-18 | 2014-12-01 | Cirocomm Technology Corp | 表面貼片式的多頻天線模組 |
CN202042593U (zh) * | 2011-04-18 | 2011-11-16 | 广东欧珀移动通信有限公司 | 一种多频段内置天线装置 |
TW201405936A (zh) * | 2012-07-25 | 2014-02-01 | Wha Yu Ind Co Ltd | 晶片型天線及其製造方法 |
US9502757B2 (en) * | 2012-10-08 | 2016-11-22 | Taoglas Group Holdings Limited | Low-cost ultra wideband LTE antenna |
TWI566473B (zh) * | 2012-10-24 | 2017-01-11 | 群邁通訊股份有限公司 | 寬頻天線及具有該寬頻天線的可攜帶型電子裝置 |
TWM459541U (zh) * | 2013-01-21 | 2013-08-11 | Cirocomm Technology Corp | 貼片式的多頻天線模組 |
-
2015
- 2015-10-06 TW TW104132780A patent/TWI563735B/zh active
-
2016
- 2016-06-21 EP EP16175515.2A patent/EP3154125B1/en active Active
Non-Patent Citations (1)
Title |
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None * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US12034231B2 (en) | 2023-05-01 | 2024-07-09 | Taoglas Group Holdings Limited | Multi-frequency band antenna |
Also Published As
Publication number | Publication date |
---|---|
TW201714354A (zh) | 2017-04-16 |
EP3154125A1 (en) | 2017-04-12 |
TWI563735B (en) | 2016-12-21 |
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