专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明专利

JPH04261201A TRANSMISSION LINE 失效
公开(公告)号：JPH04261201A
公开(公告)日：1992-09-17
申请号：JP40902190
申请日：1990-12-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： OHASHI HIDEMASA , MIYAZAKI MORIYASU , ISHIDA OSAMI , HARUYAMA TETSUO , TSUDA YOSHIAKI
IPC分类号： H01P1/22 , H01P1/26 , H01P3/08
摘要： PURPOSE:To form a microwave circuit including a resistive element with simple processing such as etching and to realize the transmission line with less transmis sion loss. CONSTITUTION:A board having strip conductors 5a, 5b via a resistive layer and comprising the resistive layer and a conductor layer in this order and ground conductors 3, 4 provided respectively to boards 1, 2 opposite to the trip conductors 5a, 5b and insulated from the board is provided on positions opposite to each other on both sides of a dielectric board 10. The strip conductors 5a, 5b are set to equi-potential at their position opposite to each other and they are used as an inner conductor set, and the ground conductors 3, 4 are used for outer conductors, and a microwave signal is applied to the conductors to send an electromagnetic wave through the transmission line.

52. 发明专利

JPH0330501A ONE-END SHORT-CIRCUITED TYPE MICROSTRIP ANTENNA 失效
公开(公告)号：JPH0330501A
公开(公告)日：1991-02-08
申请号：JP16502489
申请日：1989-06-27
申请人： JAPAN TECH RES & DEV INST , MITSUBISHI ELECTRIC CORP
发明人： ASANO YOSHIO , HOSOI MASAHIDE , TSUDA YOSHIAKI
IPC分类号： H01Q13/08
摘要： PURPOSE:To easily match a frequency to a desired resonance frequency by providing plural metallic screws or metallic bars for short-circuiting a radiation conductor element and a ground conductor panel at intervals corresponding to a change in the resonance frequency of a microstrip antenna in a short-circuited peripheral end positioned in opposite to the opened peripheral end of the radiation conductor element. CONSTITUTION:A high frequency signal inputted to a coaxial line 4 of an input terminal passes through a central conductor 6 and excites a feeding point 5 and linearly polarized radio waves radiate, from an opened peripheral end 7 of a radiation conductor element 1. The position of the feeding point 5 to the radiation conductor element 1 is determined from the standpoint of impedance matching and cross polarization suppression. On the other hand, the resonance frequency of the one-end short-circuited type microstrip antenna can be arbitrarily set by plural metallic screws 9, which are provided at intervals (e) in a short-circuited peripheral end 8, without changing a side length (a) of the radiation conductor element 1 and the dielectric constant of a dielectric substrate 2. When the quantity of the metallic screws 9 is enlarged and the interval (e) is narrowed, the resonance frequency is moved to the high frequency and when the quantity of the metallic screws 9 is reduced and the interval (e) is widened, the resonance frequency is moved to the low frequency.

53. 发明专利

JPH02111101A RF MATCHING TERMINATOR 失效
公开(公告)号：JPH02111101A
公开(公告)日：1990-04-24
申请号：JP26432188
申请日：1988-10-20
申请人： MITSUBISHI ELECTRIC CORP
发明人： TSUDA YOSHIAKI , HARUYAMA TETSUO
IPC分类号： H01P1/26 , H01P3/08
摘要： PURPOSE:To obtain an RF matching terminator able to absorb a microwave power by coating a thin film resistor for microwave to take matching to a face of a dielectric base. CONSTITUTION:A strip line 2 and a thin film resistor 5 for microwave are kept to the same potential by providing a connection line 2a to be in sufficient contact with a strip line 2 and a 1/4 wavelength line 2b to a dielectric base 1b in contact with the upper face of the strip line 2, the microwave power flowing through the strip line 2 flows to the microwave thin film resistor 5 and the frequency band used for the 1/4 wavelength line 2b is matched, then the reflection loss caused is -25dB or below when the microwave power is inputted to the microwave thin film resistor 5, and then the microwave power is sufficiently absorbed in the microwave thin film resistor 5. Moreover, the microwave thin film resistor 6 is coated to the dielectric base 1b in contact with the upper face of the strip line 2, but the film 6 may be coated to the side of the dielectric base 1a at the side of the strip line 2.

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