WO2004032283A1 - アンテナ装置 - Google Patents
アンテナ装置 Download PDFInfo
- Publication number
- WO2004032283A1 WO2004032283A1 PCT/JP2003/010973 JP0310973W WO2004032283A1 WO 2004032283 A1 WO2004032283 A1 WO 2004032283A1 JP 0310973 W JP0310973 W JP 0310973W WO 2004032283 A1 WO2004032283 A1 WO 2004032283A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- signal
- frequency
- frequency band
- diplexer
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/12—Frequency diversity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—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
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
Definitions
- a multi-mode, multi-band wireless communication device that can support a new wireless communication system is required. Further, in such a wireless communication device, an antenna device capable of handling a plurality of frequency bands is required.
- an antenna device that can cope with a plurality of frequency bands
- an antenna device disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-285185 (Patent Document 1).
- This conventional antenna apparatus separates a received signal received via an antenna into a diplexer for distributing to a communication system corresponding to a DCS system and a GSM system having different frequencies, and a transmitting unit and a receiving unit of each communication system.
- a high-frequency switch is provided to reduce the number of components of the mobile communication device, thereby enabling downsizing of the circuit.
- a device that uses a high-band high-frequency switch and simply switches the power supply to a multi-band antenna having the number of bands corresponding to the frequency of the applicable device was also studied.
- the conventional antenna element and antenna circuit Requires significant modification of
- the present invention has been made to solve the above problems, and an object of the present invention is to support a plurality of wireless communication systems and a plurality of frequency bands, such as two wireless communication systems and three frequency bands, and to provide different wireless communication systems.
- An object of the present invention is to provide an antenna device which can perform reception and transmission simultaneously and can use antenna diversity with a simple configuration.
- the antenna device includes: a first antenna matched to the first, second and third frequency bands; a second antenna matched to the third frequency band; A diplexer that distributes a signal received from an antenna into a signal in the first frequency band, a signal in the second and third frequency bands, and a first transmitter that transmits the signal in the first frequency band.
- a first switch means for selecting a transmitter or a first receiver for receiving the signal in the first frequency band and connecting to the diplexer; and a second switch for receiving a signal in the second frequency band.
- Second switch means for selecting the second receiver or the second transmitter for transmitting the signal in the second frequency band and connecting to the diplexer; and transmitting and receiving the signal in the third frequency band.
- vessel a third switch means for selecting and connecting the second antenna or the diplexer.
- a signal received from the first antenna matched to the first, second, and third frequency bands is converted by a diplexer into a signal in the first frequency band, a signal in the second frequency band, and a signal in the second frequency band.
- the signals in the frequency band of 3 are converted by a diplexer into a signal in the first frequency band, a signal in the second frequency band, and a signal in the second frequency band.
- the first switch means selects the first receiver or the first transmitter and connects to the duplexer.
- the second switching means selects a second receiver or a second transmitter and connects to the diplexer.
- the third switch means selects the second antenna or diplexer and connects it to the transceiver.
- an antenna device that can support two wireless communication systems and three frequency bands, can simultaneously receive and transmit different wireless systems, and can use antenna diversity.
- two antenna systems corresponding to three frequency bands a dual-band single-mode antenna system in the first and second frequency bands and a single-mode antenna system in the third frequency band.
- reception of a signal in the first frequency band and transmission of a signal in the third frequency band can be performed simultaneously. Further, it is possible to easily provide an antenna device that can use antenna diversity for the third frequency band.
- an antenna switching connector is provided between the first antenna and the diplexer, and connects the external antenna to the diplexer instead of the first antenna when an external antenna is mounted.
- a low-pass filter is provided between at least one of the first switch means and the first transmitter, and between at least one of the second switch means and the second transmitter.
- the first antenna is further matched to a fourth frequency band
- the diplexer includes a signal of the first frequency band, a signal of the second, third, and fourth frequency bands.
- the second switch means, a second receiver that receives the signal of the second frequency band, a fourth receiver that receives the signal of the fourth frequency band, or the second A fourth transmitter for transmitting a signal in the second or fourth frequency band is selected and connected to the diplexer.
- an antenna device that can support two wireless communication systems and four frequency bands, can simultaneously perform reception and transmission of different wireless systems, and can use antenna diversity is provided with a simple configuration. It can. That is, two antenna systems corresponding to four frequency bands, namely, a tri-band / single-mode antenna system in the first, second and fourth frequency bands and a single-mode antenna system in the third frequency band. , Without significant changes. In addition, reception of a signal in the first frequency band and transmission of a signal in the third frequency band can be performed simultaneously. Further, it is possible to easily provide an antenna device that can use antenna diversity with respect to the third frequency band.
- a low-pass filter is provided between at least one of the first switch means and the first transmitter and at least one of the second switch means and the fourth transmitter.
- the GSM90 O / DCS 1800 / PC S1900 tri-band single-mode antenna system and the W CDMA antenna system are combined with 90 OMHz / 180 OMHz / 1 90 OMHz / Two antenna systems for four frequency bands of 2 GHz can be realized without significant changes.
- reception of a signal in the first frequency band and transmission of a signal in the third frequency band can be performed simultaneously.
- antenna diversity can be used for the third frequency band.
- a first antenna and a second antenna thus, a dual-mode z-multiband antenna device that can use only an external antenna without using an antenna can be easily provided.
- FIG. 1 is a block diagram illustrating a configuration of a wireless communication device to which the antenna device according to the first embodiment of the present invention is applied.
- FIG. 4 is a block diagram illustrating a configuration of a wireless communication device to which the antenna device according to the fourth embodiment of the present invention is applied.
- FIG. 6 is a block diagram illustrating a configuration of a wireless communication device to which the antenna device according to the sixth embodiment of the present invention is applied.
- FIG. 7 is a block diagram showing a configuration of a wireless communication device to which the antenna device according to the seventh embodiment of the present invention is applied.
- FIG. 8 is a block diagram showing a configuration of a wireless communication device to which the antenna device according to the eighth embodiment of the present invention is applied.
- FIG. 9 is a block diagram showing a configuration of a wireless communication device to which the antenna device according to the ninth embodiment of the present invention is applied.
- 1, 2 and 0 are the first antenna
- 2 is the second antenna
- 3 and 2 are diplexers
- 4 is the first high-frequency switch circuit
- 5 and 2 2 are the second high-frequency switches.
- Switch circuit, 6 is a third high frequency switch circuit
- 7 is the first frequency receiver
- 8 is the first frequency transmitter
- 9 is the second frequency receiver
- 10 is the second frequency transmitter
- 1 1 is the third frequency transceiver
- 12 and 28 are antenna switching connectors
- 13 and 14 are low-pass filters
- 17 is DCS 180 0 receiver
- 18 is DCS!
- the antenna device of the present embodiment is applied to a wireless communication device such as a mobile terminal device of a mobile communication system.
- the first antenna 1 is matched to the first, second and third frequency bands.
- the second antenna 2 is matched to the third frequency band.
- the diplexer 3 distributes a signal from the first antenna 1 into a signal in the first frequency band and signals in the second and third frequency bands.
- the second high-frequency switch circuit 5 (including a part of the second switch means and a part of the third switch means described in the claims) includes a second frequency receiver 9 and a second frequency transmission circuit. This switches the connection between the transceiver 10 or the third high-frequency switch circuit 6 and the diplexer 3.
- the diplexer 3 When the diplexer 3 is connected to the second frequency receiver 9, the second and third signals from the diplexer 3 are switched.
- the diplexer 3 is connected to the second frequency transmitter 10, the signal of the second frequency band from the transmitter 10 is transmitted to the diplexer 3. .
- the third high-frequency switch circuit 6 (corresponding to a part of the third switch means described in the claims) includes the second antenna 2 or the second high-frequency switch circuit 5 and the third frequency transceiver 11.
- the third frequency transceiver 11 When the third frequency transceiver 11 is connected to the second antenna 2, the third frequency transceiver 11 and the second antenna 2 are transmitted and received between the third frequency transceiver 11 and the second antenna 2. Transmit signals in frequency band 3.
- the diplexer 3 is connected to the third frequency transceiver 11 by the second high-frequency switch circuit 5 and the third high-frequency switch circuit 6, the first antenna 1 and the third frequency transceiver 1 A signal in the third frequency band is transmitted between the two.
- the antenna device of the first embodiment uses the second high-frequency switch circuit 5 and the third high-frequency switch circuit 6 to provide a dual-band single-mode in the first and second frequency bands. And a single-mode antenna system in the third frequency band.
- the signal When a signal in the second frequency band is received by the first antenna 1, the signal is filtered by the diplexer 3 into a high-frequency signal including signals in the second and third frequency bands, and is filtered by the second high-frequency switch circuit 5. To reach.
- the second frequency receiver 9 When the second frequency receiver 9 is connected to the diplexer 3 by the second high-frequency switch circuit 5, a signal in the second frequency band is transmitted to the second frequency receiver 9.
- the diplexer 3 and the second frequency transmitter 10 are connected by the second high-frequency switch circuit 5, and the signal is being transmitted.
- a signal in the second frequency band is radiated from the first antenna 1 via the diplexer 3.
- the diplexer 3 When transmitting and receiving signals in the third frequency band, it is possible to select and transmit either the first antenna 1 or the second antenna 2.
- the diplexer 3 When transmitting and receiving signals in the third frequency band, the diplexer 3 is connected to the third high-frequency switch circuit 6 by the second high-frequency switch circuit 5, and the second high-frequency switch circuit 6 further connects the second high-frequency switch.
- the switch circuit 5 and the third frequency transceiver 11 are connected, a signal in the third frequency band is transmitted between the first antenna 1 and the third frequency transceiver 11. Therefore, the signal received by the first antenna 1 is filtered by the diplexer 3 into a high-frequency signal including a signal in the second and third frequency bands, reaches the second high-frequency switch circuit 5, and has a third frequency. Transmitted to transceiver 11.
- the third high-frequency switch circuit 6 connects the second antenna 2 to the third frequency transceiver 11, and the third The signal in the frequency band is transmitted between the second antenna 2 and the third frequency transmitter / receiver 11.
- antenna diversity for switching the antenna to be used according to the transmission and reception efficiency of each antenna is realized.
- the following two methods are feasible. One of them is to transmit a signal in a second frequency band; a third frequency band in a first antenna 1. This is a method for receiving signals in the P2003 / 010973 area. The other one is a method of transmitting a signal in the third frequency band only by the first antenna 1 and receiving a signal in the first frequency band.
- the dual-band single-mode antenna system of the first and second frequency bands and the single-mode antenna system of the third frequency band have three Two antenna systems corresponding to two frequency bands can be realized without making significant changes to conventional devices.
- the reception of the signal of the first frequency band and the transmission of the signal of the third frequency band can be performed simultaneously. Also, it is possible to easily provide a dual mode Z multi-band antenna device capable of realizing an antenna diversity function for a signal in the third frequency band.
- This antenna apparatus receives a signal in a first frequency band received by a first antenna 1 in a first frequency receiver 7 and transmits a signal in a first frequency band from a first frequency transmitter 8 I do. Further, a signal in the second frequency band is received by the second frequency receiver 9, and a signal in the second frequency band is transmitted from the second frequency transmitter 10. Further, when the third high-frequency switch circuit 6 selects the second high-frequency switch circuit 5, That is, when the third high-frequency switch circuit 6 selects the first antenna 1, the signal of the third frequency band from the third frequency transceiver 11 is transmitted to the first antenna 1 or the antenna switching connector. It is possible to communicate with the external antenna attached to 12.
- the conventional dual band-single mode antenna system and the single mode antenna system of the third frequency band correspond to two frequency bands corresponding to three frequency bands.
- the antenna system can be implemented without major changes.
- the reception of the signal in the first frequency band and the transmission of the signal in the third frequency band can be performed simultaneously.
- antenna diversity is realized for the third frequency band.
- a dual mode / multi-band that can use an external antenna instead of the first antenna 1
- FIG. 3 is a diagram illustrating a configuration of a wireless communication device to which the antenna device according to the third embodiment is applied.
- the antenna device according to the third embodiment has the same configuration as that of the first embodiment, and further includes an output side of a first frequency transmitter 8 that transmits a signal of a first frequency band, and an output terminal of a second frequency band.
- a second frequency transmitter 10 for transmitting a signal low-pass filters 13 and 14 for suppressing respective harmonics are provided on the output side of a second frequency transmitter 10 for transmitting a signal.
- the configuration and operation other than the low-pass filters 13 and 14 are the same as those in the first embodiment.
- each harmonic component is suppressed and transmitted from the first antenna.
- Frequency band An antenna device that transmits a signal having a reduced harmonic component with respect to a transmission signal in the second frequency band can be provided.
- two antenna systems corresponding to three frequency bands that is, a conventional dual-band single-mode antenna system and a single-mode antenna system in the third frequency band, It can be done without significant changes. Moreover, the reception of the signal in the first frequency band Transmission of signals in the third frequency band can be performed simultaneously. Further, antenna diversity is realized for the third frequency band. Further, a dual-mode multiband antenna device capable of transmitting a signal with reduced harmonics in the first frequency band and the second frequency band can be easily provided.
- the antenna device according to the third embodiment may be provided with an antenna switching connector as in the second embodiment. Further, only one of the low-pass filters 13 and 14 may be provided.
- the transmitting / receiving operation of the antenna device having the above configuration will be described.
- the received signal of GSM900 which is a received wave in the first frequency band, is received by the first antenna 1, and after filtering the harmonic components by the diplexer 3, reaches the first high-frequency switch circuit 4.
- the first high-frequency switch circuit 4 selects the GSM900 receiver 15 when receiving the GSM900 signal that is the received wave in the first frequency band.
- the GSM900 transmission signal which is a transmission wave in the first frequency band, was transmitted from the GSM900 transmitter 16, and the low-pass filter 13 reduced harmonic components. Thereafter, during transmission, the light is radiated from the first antenna 1 via the first high-frequency switch circuit 4 and the diplexer 3 connected to the GSM 900 transmitter 16.
- a received signal of DCS 1800 which is a received wave of the second frequency band, is received by the first antenna 1, and is output by the diplexer 3 as a high-frequency signal including a signal of the second 'third frequency band to the second antenna.
- the high frequency switch circuit 5 of FIG. The second high-frequency switch circuit 5 selects the DCS 1800 receiver 17 when receiving the signal of DCS 1800 which is the second frequency band.
- the second high-frequency switch circuit 5 When transmitting and receiving WCDMA signals, the second high-frequency switch circuit 5 is connected to the third high-frequency switch circuit 6, and the third high-frequency switch circuit 6 is connected to the second high-frequency switch circuit 5.
- WCDMA transceiver 19 can transmit and receive.
- the second antenna 2 When transmitting a WC DMA signal with the second antenna 2, the second antenna 2 is selected by the third high-frequency switch circuit 6, and the signal of the WCDMA transceiver 19 is transmitted and received by the second antenna 2. Is done. In other words, antenna diversity for switching the antenna to be connected to WCDMA transmitter / receiver 19 according to the transmission / reception efficiency of each antenna is realized.
- the compressed mode of the downlink (communication from the base station to the terminal) is used, and the uplink (from the terminal to the base station) is used.
- the operation when GSM 900 is received without using the compressed mode in (2) can be realized by two methods in this embodiment. In other words, a method of transmitting a WCDMA signal with the second antenna 2 and receiving a GSM900 signal with the first antenna 1 and a first antenna In this method, only the antenna 1 transmits the WC DMA signal and receives the GSM900.
- the 90 GMH900 / DCS 1800 dual-band single-mode antenna system and the WCDMA single-mode antenna system have a 90-MHz Two antenna systems corresponding to three frequency bands of 1 80 OMH z Z 2 GH Z frequency band can be realized without significant changes.
- the compressed mode operations for monitoring the inter-system during communication by the WC DMA system only the downlink compressed mode is used, and the GSM900 reception is performed without using the uplink compressed mode. It can be carried out. Further, regarding the WCDMA system, a dual-mode multi-band antenna device capable of realizing antenna diversity can be easily provided.
- the antenna switching connector of the second embodiment may also be used in the antenna device of the fourth embodiment. Further, even if the low-pass filters 13 and 14 are not provided, if it is possible to satisfy the standard of the radio with the antenna output, these may not be provided.
- FIG. 5 is a diagram illustrating a configuration of a wireless communication device to which the antenna device according to the fifth embodiment is applied.
- This wireless communication device includes a first antenna 20, a second antenna 2, a diplexer 21, a first high-frequency switch circuit 4, a second high-frequency switch circuit 22, a third high-frequency switch circuit 6, a first high-frequency switch circuit 6. It has a frequency receiver 7, a first frequency transmitter 8, a second frequency receiver 9, a fourth frequency receiver 23, a second / fourth frequency transmitter 24, and a third frequency transceiver 11 .
- the antenna device includes a first antenna 20, a second antenna 2, a diplexer 21, a first high-frequency switch circuit 4, a second high-frequency switch circuit 22, and a third high-frequency switch circuit 6. It is composed as follows.
- the first antenna 20 is matched to the first, second, third and fourth frequency bands.
- the diplexer 21 distributes a signal from the first antenna 20 into a signal in the first frequency band and signals in the second, third, and fourth frequency bands.
- the first high-frequency switch circuit 4 switches the connection between the first frequency receiver 7 or the first frequency transmitter 8 and the diplexer 21, and the diplexer 21 connects to the first frequency receiver 7.
- the first frequency band signal from the diplexer 21 is transmitted to the receiver 7, and if the diplexer 21 is connected to the first frequency transmitter 8, the first frequency signal from the transmitter 8 is transmitted.
- the transmission signal in the frequency band is transmitted to the diplexer 21.
- the second high-frequency switch circuit 22 includes a second frequency receiver 9, a fourth frequency receiver 23, a second fourth frequency transmitter 24 or a third high-frequency switch circuit 6, and a diplexer 21.
- the diplexer 21 When the diplexer 21 is connected to the second frequency receiver 9, the signals of the second, third and fourth frequency bands from the diplexer 21 are received by the second frequency receiver 9.
- the diplexer 21 When the diplexer 21 is connected to the fourth frequency receiver 23, the signal of the second, third and fourth frequency bands from the diplexer 21 is transmitted to the fourth frequency receiver 2 3 and the diplexer 21 is connected to the second Z fourth frequency transmitter 24, the signal of the second or fourth frequency band from the second Z fourth frequency transmitter 24 is transmitted. Transmit to diplexer 21.
- the signal of the third frequency band can be transmitted and received by selecting either the first antenna 20 or the second antenna 2.
- the signal transmitted and received by the first antenna 20 reaches the second high-frequency switch circuit 22 as a high-frequency signal including the signals in the second, third and fourth frequency bands by the diplexer 21.
- the second high-frequency switch circuit 22 is connected to the third high-frequency switch circuit 6, and the third high-frequency switch circuit 6 is connected to the second high-frequency switch circuit 22.
- the connection is made, and the signal of the third frequency band can be transmitted and received by the third frequency transceiver 11.
- the third high-frequency switch circuit 6 is connected to the second antenna 2. That is, it is possible to realize an antenna diversity function for switching the antenna to be connected to the signal in the third frequency band according to the transmission and reception efficiency of each antenna.
- the reception of the signal of the first frequency band and the transmission of the signal of the third frequency band are performed at the same time, it can be realized by two methods.
- One is a method in which a signal in the third frequency band is transmitted by the second antenna 2 and a signal in the first frequency band is received by the first antenna 20.
- the other is a method in which a signal in the third frequency band is transmitted only by the first antenna 20 and a signal in the first frequency band is received.
- FIG. 6 is a diagram illustrating a configuration of a wireless communication device to which the antenna device according to the sixth embodiment is applied. Since the antenna device of the sixth embodiment has substantially the same configuration as that of the fifth embodiment, the same components are denoted by the same reference numerals as those of the fifth embodiment, and description thereof will be omitted. Now, only the different components will be described.
- the connection is switched so that 1 and the diplexer 3 are connected.
- the device receives the signal of the first frequency band transmitted and received by the first antenna 20 by the first frequency receiver 7 and the signal of the first frequency band from the first frequency transmitter 8 Transmitting, receiving the signal of the second frequency band at the second frequency receiver 9, receiving the signal of the fourth frequency band at the fourth frequency receiver 23, and receiving the second and fourth frequencies
- the third high-frequency switch circuit 6 selects the second high-frequency switch circuit 22 side. That is, when the third high frequency switch circuit 6 selects the first antenna side, the signal of the third frequency band from the third frequency transmitter / receiver 11 is transmitted to the first antenna 1 or the antenna switching connector. Communication can be performed with the external antenna attached to 12.
- the antenna device of the sixth embodiment two antennas corresponding to four frequency bands, the conventional tri-band single mode antenna system and the third frequency band single mode antenna system, are used.
- An antenna system can be realized without significant changes.
- the reception of the signal of the first frequency band and the transmission of the signal of the third frequency band can be performed simultaneously.
- antenna diversity can be used for signals in the third frequency band.
- a dual-mode Z multi-band antenna device in which an external antenna can be used instead of the first antenna 20 can be provided easily. .
- each harmonic component is suppressed and the first antenna 20 Therefore, an antenna device that transmits a signal in which a harmonic component of a transmission signal is reduced in the first frequency band and the second frequency band can be provided.
- two antenna systems corresponding to four frequency bands that is, a conventional tri-band single mode antenna system and a third frequency band single mode antenna system, This can be achieved without significant changes. Moreover, the reception of the signal of the first frequency band and the transmission of the signal of the third frequency band can be performed simultaneously. Also, antenna diversity can be used for the third frequency band. Further, it is possible to easily provide an antenna device that transmits a signal with reduced harmonic components in the first frequency band and the second to fourth frequency bands.
- an antenna switching connector may be provided as in the sixth embodiment. Further, only one of the low-pass filters 13 and 14 may be provided. (Eighth embodiment)
- FIG. 8 is a diagram illustrating a configuration of a wireless communication device to which the antenna device according to the eighth embodiment is applied.
- the wireless communication device according to the eighth embodiment has the same configuration as that of the seventh embodiment.
- first GSM900 receiver 1 5 as a frequency receiver for processing (signal 90 OMH Z of G SM scheme) the received signal of the first frequency band to generate a transmission signal of the first frequency band GSM900 transmitter 16 as the first frequency transmitter
- DCS 1800 receiver 17 as the receiver for processing the received signal of the second frequency band (signal of 180 OMHZ in the DCS system)
- PCS 1900 receiver 26 as a receiver for processing received signals in the 4th frequency band (PCS signal of 190 OMHZ)
- DCS as a transmitter to generate transmission signals in the 2nd and 4th frequency bands 18 00 // p CS 1 900 Transmitter 27, and WCDMA transmission / reception circuit 19 as a transmitter that generates and processes a signal in the third frequency band (2 GHz WCDMA signal).
- the GSM900 transmitter signal which is the transmission wave of the first frequency band, is transmitted from the GSM900 transmitter 16 and the low-pass filter 13 reduces harmonic components.
- the light is radiated from the first antenna 20 via the first high-frequency switch circuit 4 and the diplexer 21 connected to the device 16.
- the received signal of the PCS 1900 which is a received wave of the fourth frequency band, is received by the first antenna 20 and is converted by the diplexer 21 as a high-frequency signal including signals of the second, third, and fourth frequency bands.
- the second high-frequency switch circuit 22 is reached.
- the second high frequency switch circuit 22 is connected to the PCS 1900 receiver 26 when receiving the signal of the PCS 1900 which is the fourth frequency band.
- the transmission signals of the DCS 1800 and PCS 1900 which are the transmission waves in the second and third frequency bands, are transmitted from the DCS 1800 ZPCS 1900 transmitter 27, and the low-pass filter 25 reduces harmonic components. Then, during transmission, the signal is radiated from the first antenna 20 via the second high-frequency switch 22 and the diplexer 21 connected to the DC S 1800 / PC S 1900 transmitter 27 side.
- the signal of WCDMA which is a transmission / reception wave of the third frequency band, can be transmitted and received by selecting either the first antenna 20 or the second antenna 2.
- the signal transmitted and received by the first antenna 20 reaches the second high-frequency switch circuit 22 as a harmonic signal including signals in the second, third and fourth frequency bands by the diplexer 21.
- the second high-frequency switch circuit 22 is connected to the third high-frequency switch circuit 6, and the third high-frequency switch circuit 6 is connected to the second high-frequency switch circuit 6. It is connected to the frequency switch circuit 22 and can be transmitted and received by the WCDMA transceiver 19.
- the third high-frequency switch circuit 6 When transmitting and receiving a WCDMA signal with the second antenna 2, the third high-frequency switch circuit 6 is connected to the second antenna 2, and the signal of the WCDMA transceiver 19 is transmitted and received with the second antenna 2. That is, the antenna diversity that switches the connected antenna to the WCDMA transmitter / receiver 19 according to the transmission / reception efficiency of each antenna can be used.
- the GSM900 uses only the compressed mode of the downlink and does not use the compressed mode of the uplink. Can receive. Furthermore, with respect to the WCDMA system, an antenna device capable of realizing an antenna diversity function can be easily provided.
- the antenna switching connector according to the sixth embodiment may be provided in the antenna device according to the eighth embodiment. Further, even if the low-pass filters 13 and 25 are not provided, if it is possible to satisfy the wireless device standard only by the antenna output, these may not be provided. JP2003 / 010973
- FIG. 9 is a diagram illustrating a configuration of a wireless communication device to which the antenna device according to the ninth embodiment is applied.
- the wireless communication device according to the ninth embodiment has a control unit 30 in addition to the same configuration as the second embodiment.
- the control section 30 (corresponding to the control means described in the claims) is connected to the antenna switching connector 28 by a cable plug connected to an external antenna.
- the control unit 30 recognizes that the third frequency transceiver 11 communicates a signal in the third frequency band.
- two antenna systems corresponding to three frequency bands that is, the conventional dual-band / single-mode antenna system and the single-frequency antenna system in the third frequency band, This can be achieved without significant changes. Moreover, the reception of the signal of the first frequency band and the transmission of the signal of the third frequency band can be performed simultaneously. Also, antenna diversity can be used for the third frequency band. Further, it is possible to easily provide a dual mode Z multi-band antenna device that can use only an external antenna without using the first antenna 1 and the second antenna 2.
- the low-pass filter according to the third embodiment may be used in combination with the wireless communication device according to the ninth embodiment.
- the first frequency receiver 7 is a GSM 900 receiver
- the first frequency transmitter 8 is a GSM 900 transmitter
- the second frequency receiver 9 is a DCS 180 0 receiver
- the frequency transmitter 10 may be constituted by a DCS 180 0 transmitter
- the third frequency transceiver 11 may be constituted by a WCDMA transceiver.
- a receiver and a transmitter for receiving a signal in the fourth frequency band are combined. You may comprise.
- the low-pass filter according to the seventh embodiment may be combined.
- a wireless communication device that supports the GSM900, DCS1800, PCS1900, and WCDMA of the eighth embodiment may be used.
- reception and transmission of different wireless communication systems can be performed simultaneously, corresponding to a plurality of wireless communication systems and frequency bands such as two wireless communication systems and three frequency bands. It is possible to provide an antenna device with a simple configuration that can use antenna diversity.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003264345A AU2003264345A1 (en) | 2002-10-07 | 2003-08-28 | Antenna device |
EP03799089A EP1551080A4 (en) | 2002-10-07 | 2003-08-28 | ANTENNA DEVICE |
US10/530,663 US7142824B2 (en) | 2002-10-07 | 2003-08-28 | Antenna device with a first and second antenna |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002293822A JP3672196B2 (ja) | 2002-10-07 | 2002-10-07 | アンテナ装置 |
JP2002-293822 | 2002-10-07 |
Publications (1)
Publication Number | Publication Date |
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WO2004032283A1 true WO2004032283A1 (ja) | 2004-04-15 |
Family
ID=32064016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2003/010973 WO2004032283A1 (ja) | 2002-10-07 | 2003-08-28 | アンテナ装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7142824B2 (ja) |
EP (1) | EP1551080A4 (ja) |
JP (1) | JP3672196B2 (ja) |
CN (1) | CN1689194A (ja) |
AU (1) | AU2003264345A1 (ja) |
WO (1) | WO2004032283A1 (ja) |
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US7142824B2 (en) * | 2002-10-07 | 2006-11-28 | Matsushita Electric Industrial Co., Ltd. | Antenna device with a first and second antenna |
CN102238762A (zh) * | 2010-05-05 | 2011-11-09 | 瑞昱半导体股份有限公司 | 多模切换的无线收发装置及其多模切换方法 |
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Also Published As
Publication number | Publication date |
---|---|
US7142824B2 (en) | 2006-11-28 |
US20050277387A1 (en) | 2005-12-15 |
JP3672196B2 (ja) | 2005-07-13 |
JP2004129143A (ja) | 2004-04-22 |
AU2003264345A1 (en) | 2004-04-23 |
EP1551080A4 (en) | 2007-04-11 |
CN1689194A (zh) | 2005-10-26 |
EP1551080A1 (en) | 2005-07-06 |
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