专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2003110345A ANTENNA ELEMENT AND COMMUNICATION APPARATUS USING THE SAME 审中-公开
公开(公告)号：JP2003110345A
公开(公告)日：2003-04-11
申请号：JP2001295743
申请日：2001-09-27
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： OKABE HIROSHI , TAKEDA ERIKO , AOYAMA HIROSHI , KIKUCHI KEIKO
IPC分类号： H01Q13/08 , H01Q1/24 , H01Q1/36 , H01Q1/38 , H01Q9/42
摘要： PROBLEM TO BE SOLVED: To provide an antenna element which is used for a mobile communication apparatus or the like, and in which radiation efficiency can be improved irrespective of shape of a circuit board conductor and wide bandwidth can be realized, and to provide a communication apparatus using the antenna element. SOLUTION: In this antenna element, a λ/2 radiation electrode which stretches from the central part of a surface of base substance composed of dielectrics in the symmetrical directions is installed on the surface. A ground conducting line is connected with a part in the vicinity of the center of the electrode, a power feed conductor line is connected with a part being isolated a specified distance from the central part, and at least one end portion out of both end portions of the radiation electrode is made an opened end. Impedance matching between the radiation electrode and a high-frequency signal source can be obtained, by adjusting drawing the power feeding conductor line and the ground conductor line.

2. 发明专利

JP2002271129A ANTENNA ELEMENT AND COMMUNICATIONS EQUIPMENT USING THE SAME 失效
公开(公告)号：JP2002271129A
公开(公告)日：2002-09-20
申请号：JP2001063168
申请日：2001-03-07
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： OKABE HIROSHI , TAKEDA ERIKO , AOYAMA HIROSHI , KIKUCHI KEIKO
IPC分类号： H01Q13/08 , H01Q1/36 , H01Q1/38 , H01Q9/26 , H01Q9/42 , H04B1/38 , H04B1/3822
摘要： PROBLEM TO BE SOLVED: To provide an antenna element to be used for the communications equipment of a traveling object, capable of improving the radiating efficiency and realizing band widening, regardless of the shape of the circuit board conductor by setting excitation at the antenna as being concluded, and to provide communications equipment which uses the antenna element. SOLUTION: This antenna element is provided with two similar radiating conductors extended to symmetric directions from a certain position on the surface of a board constituted of dielectric, and the edge of one radiating conductor near the other radiating conductor is formed as a power feeding edge. The edge of the other radiating conductor near one radiating conductor is formed as a ground edge, and the other edges of the both radiating conductors are formed as open edges. Then, a power feeding conductor connected to the power feeding edge and a ground conductor connected to the ground edge are arranged adjacently on the board, and the impedance of the ground conductor is matched with the input impedance of the power feeding conductor.

3. 发明专利

JP2000201015A ANTENNA ELEMENT AND RADIO COMMUNICATION DEVICE USING THE SAME 失效
公开(公告)号：JP2000201015A
公开(公告)日：2000-07-18
申请号：JP31749599
申请日：1999-11-08
申请人： HITACHI METALS LTD
发明人： AOYAMA HIROSHI , FUKAMACHI KOJI , KAWAMURA TOSHIMASA , OKABE HIROSHI , TAKEI TAKESHI
IPC分类号： H01Q13/10
摘要： PROBLEM TO BE SOLVED: To provide a compact and thin antenna element whose Q value is low and whose frequency band width and radiant gain are large. SOLUTION: An antenna element is provided with an insulating substrate 1, and a first conductor layer 2 formed continuously on the upper face, bottom face, and at least one side face of the insulating substrate 1, and a slot part 3 constituted of a part at which any conductor layer is not formed on the upper face and/or side face of the insulating substrate 1, and a band-shaped second conductor layer 4 formed in the slot part 3 or an insulating extended part 31 connected with the slot part 3 so as to be electrically insulated from the first conductor layer 2. In this case, the second conductor layer 4 is electrically connected with a power feeding system.

4. 发明专利

JP2002158522A CHIP ANTENNA ELEMENT, ANTENNA DEVICE AND COMMUNICATIONS EQUIPMENT WITH THE SAME MOUNTED THEREON 失效
公开(公告)号：JP2002158522A
公开(公告)日：2002-05-31
申请号：JP2000353462
申请日：2000-11-20
申请人： HITACHI METALS LTD
发明人： MIKAMI MACHIKO , KIKUCHI KEIKO , AOYAMA HIROSHI , OKABE HIROSHI
IPC分类号： H01Q1/38 , H01Q1/24 , H01Q9/40
摘要： PROBLEM TO BE SOLVED: To widen the band of a chip antenna element. SOLUTION: In the antenna element, in which a ground electrode provided on the end face of an insulated substrate and a radiation electrode extended from the ground electrode to the other end face while narrowing the width continuously and/or step by step are arranged, and power is fed through a feeder insulated with the radiating electrode to the middle of the radiating electrode, a coupling electrode wider than the feeder is electrically connected to the head of the feeder along with the radiating electrode, while being insulated with the radiating electrode. Thus, wide band characteristics can be provided.

5. 发明专利

JP2006217650A Antenna element and radio communication apparatus using the same 有权
标题翻译：天线元件和无线电通信设备使用它
公开(公告)号：JP2006217650A
公开(公告)日：2006-08-17
申请号：JP2006077788
申请日：2006-03-20
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： AOYAMA HIROSHI , FUKAMACHI KOJI , KAWAMURA TOSHIMASA , OKABE HIROSHI , TAKEI TAKESHI
IPC分类号： H01Q13/10 , H01P5/08
摘要： PROBLEM TO BE SOLVED: To provide an antenna element with a reduced Q value, the increased frequency bandwidth and radiation gain, less variation in the resonance frequency and the VSWR, and less number of manufacturing man-hours that facilitates impedance matching with a feeding system. SOLUTION: The antenna element includes: (a) an insulating substrate 1; (b) a first conductor layer 2 for covering the upper surface of the insulating substrate 1; (c) a belt-like slot 3 formed on an upper side of the first conductor layer 2; (d) a belt-like insulated extension 31 extended from nearly the middle part of the slot 3 to the side face of the insulating substrate 1 at a right angle; and (e) a belt-like second conductor layer 4 deposited in the insulated extension 31 and electrically insulated from the first conductor layer 2, and the second conductor layer 4 is characterized in to be electrically connected to the feeding system. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供具有降低的Q值的天线元件，增加的频率带宽和辐射增益，较小的谐振频率和VSWR的变化，以及更少的制造工时数，有助于阻抗匹配喂养系统。解决方案：天线元件包括：（a）绝缘基板1; （b）用于覆盖绝缘基板1的上表面的第一导体层2; （c）形成在第一导体层2的上侧的带状槽3; （d）带状绝缘延伸部31，其从槽3的大致中部向绝缘基板1的侧面呈直角延伸; 和（e）沉积在绝缘延伸部31中并与第一导体层2电绝缘的带状第二导体层4，第二导体层4的特征在于电连接到馈电系统。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2003204013A HIGH FREQUENCY MODULE 审中-公开
公开(公告)号：JP2003204013A
公开(公告)日：2003-07-18
申请号：JP2002002934
申请日：2002-01-10
申请人： HITACHI LTD
发明人： TAKEDA ERIKO , ISOBE ATSUSHI , TANAKA SATOSHI , OKABE HIROSHI
IPC分类号： H01L23/12 , H01L23/34 , H01L23/367 , H01L25/04 , H01L25/18 , H05K1/00 , H05K1/02 , H05K1/03
摘要： PROBLEM TO BE SOLVED: To provide a highly-functional and small-sized high frequency module. SOLUTION: The high frequency module is provided with at least a first chip 1 where a heating element is formed, a second chip 2 where an element for which operation characteristics change to a temperature change or the upper limit temperature of an operation range is lower than the upper limit temperature of the operation range of the first chip is formed, and a multilayer substrate composed of a plurality of dielectric layers 4 and a plurality of conductor layers 5 and mechanically supporting the first chip and the second chip with one of the conductor layers electrically connected to the chips. The module is provided with at least one of a means for diverging heat generated by the first chip inside the module, a means for transmitting the heat generated by the first chip from the upper surface side of the module to the lower surface side, and a means for dividing the transmission of the heat from a first conductor pattern to a second conductor pattern. COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2002238195A DYNAMO-ELECTRIC MACHINE 失效
公开(公告)号：JP2002238195A
公开(公告)日：2002-08-23
申请号：JP2001031235
申请日：2001-02-07
申请人： HITACHI LTD
发明人： OKABE HIROSHI , HATTORI KENICHI , IDE KAZUMASA , WATANABE TAKASHI , SHIOBARA RYOICHI
IPC分类号： G01R31/34 , H02K3/04 , H02K3/50
摘要： PROBLEM TO BE SOLVED: To provide a dynamo-electric machine, wherein a current equivalent to the field current rating thereof can be passed through fields, without applying a large load to the dynamo-electric machine. SOLUTION: The dynamo-electric machine includes a columnar rotor 7 comprising magnetic pole portions 9, a plurality of slots for field-winding group insertion concentrically formed on the circumferential surfaces of the magnetic pole portions 9, and a plurality of field-winding groups 1 to 4 respectively inserted into the slots. The field-winding groups are provided with connecting wires 76 to 79 for connection between the field winding groups, and the connecting wires are connected between the field-winding groups, so that the effective number of turns of the field-winding groups is less than the number of turns of all the field-winding groups.

8. 发明专利

JP2002076757A RADIO TERMINAL USING SLOT ANTENNA 失效
公开(公告)号：JP2002076757A
公开(公告)日：2002-03-15
申请号：JP2000269877
申请日：2000-09-01
申请人： HITACHI LTD
发明人： OKABE HIROSHI , TAKEI TAKESHI
IPC分类号： H01Q3/24 , H01Q1/24 , H01Q1/38 , H01Q13/10 , H01Q21/30 , H04B1/38 , H04B1/3822
摘要： PROBLEM TO BE SOLVED: To achieve a new slot antenna to which a turning circuit in simple manufacturing process and less influence on radiated power can be connected, and a small-sized wireless apparatus on which this antenna is built. SOLUTION: This device is so constituted that it has a slot 2 positioned on the side surface of a conductive box 1, and a power feeder electrode 5 positioned within the slot so that it crosses the slot, that a variable impedance circuit 10 is connected to the part between the conductors on both ends of the slot 2 at a fixed distance of 8 from one end of and along the slot 2, that resonance frequency of the antenna is controlled by changing the impedance of the variable impedance circuit 10 with control signals from a control circuit 30, and that the antenna, with each one of its transmitter and receiver's main polarization oriented to the same direction and connected by means of a support body 100, is positioned on the circuit substrate of the wireless apparatus.

9. 发明专利

JPH1155045A FEED FORWARD POWER AMPLIFIER 失效
公开(公告)号：JPH1155045A
公开(公告)日：1999-02-26
申请号：JP21288597
申请日：1997-08-07
申请人： HITACHI LTD
发明人： HORI KAZUYUKI , KISHIDA HIROSHI , SEKINE KENJI , TAKEI TAKESHI , OKABE HIROSHI
IPC分类号： H03F1/32
摘要： PROBLEM TO BE SOLVED: To reduce gain fluctuation and the stability of gain satisfactorily by controlling a variable attenuator that is provided on a signal path between 1st and 2nd power distributors with a supervisory result of 1st synthesizer output power or an error amplifier output voltage level. SOLUTION: When gain fluctuation occurs because of the temperature change and the secular change of a main amplifier 13, the same amplitude condition of an error extraction loop is destroyed, a main signal component mixes into an error extraction loop output and the power level of an output signal of a 1st power synthesizer 25 is increased. In such cases, a level supervising means 20 supervises an output signal level of an error amplifier 26 and satisfies the same amplitude condition through the adjustment of a variable attenuator 12 which minimizes it. By performing a series of control, it is possible to maintain a state in which a gain change part of the amplifier 13 and an attenuation quantity change part of the attenuator 12 are always equal. That is, because the attenuator 12 on the preceding stage cancels gain deviation of the amplifier 13, integrated gain of path which is formed by the amplifier 13 and the attenuator 12 can be kept constant.

10. 发明专利

JPH1146115A TUNING SLOT ANTENNA 失效
公开(公告)号：JPH1146115A
公开(公告)日：1999-02-16
申请号：JP14688698
申请日：1998-05-28
申请人： HITACHI LTD
发明人： OKABE HIROSHI , TAKEI TAKESHI
IPC分类号： H01Q23/00 , H01Q13/10
摘要： PROBLEM TO BE SOLVED: To change the resonance frequency of an antenna in a wide range while keeping matching conditions of the antenna by providing an island-shaped conductor that is isolated from a conductor box in a slot and connecting a circuit that can change a capacitance between both conductors between the island-shaped conductor and a wall surface of the conductor box. SOLUTION: An island-shape conductor 20 is provided in a slot 2. A variable capacity circuit 16 connects one of a pair of terminals in which inter-terminal capacity changes to the conductor 20, the other to a wall surface of a flat conductor box 1, and one end of a control line 30 to a terminal to which a control signal to change inter-terminal capacity is applied. The other end of the line 30 is connected to a control circuit 50, and a capacity value between the conductor 20 and the box 1 can be changed by changing a control signal that is supplied from the circuit 50. This makes it possible to equivalently change band-shaped conductor length and slot length which are just under the slot at the same time and to change an impedance matching center frequency (resonance frequency) of an antenna in a wide range.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式