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1. 发明专利

JPS5840906A MULTIBEAM ANTENNA 失效
公开(公告)号：JPS5840906A
公开(公告)日：1983-03-10
申请号：JP13939981
申请日：1981-09-04
申请人： NIPPON TELEGRAPH & TELEPHONE , MITSUBISHI ELECTRIC CORP
发明人： KUMAZAWA HIROYUKI , UENO KENJI , URASAKI SHIYUUJI , HONMA YOSHIHIRO , MAKINO SHIGERU
IPC分类号： H01Q19/17 , H01Q19/19 , H01Q25/00
摘要： PURPOSE:To suppress a rise of the side lobe level without lowering the gain, by using a columnar surface reflector containing two special sections in place of a parabolic reflector and as a result reducing the aberration which is caused on the surface of an opening. CONSTITUTION:The axis (y) is set toward the bus bar of a columnar surface, and a face (yz) is set horizontal. The section curve of a columnar surface reflector 7 on a (zx) surface and the section curve of a secondary columnar surface reflector 6 are decided so that the planar wave sent from the (z) axis direction and the planar surface from the direction having a theta inclination to the axis (z) are focused at a focus F0 respectively. Then plural linear primary radiators are distributed at the areas near the focus F0. In such way, a multibeam having the reduced deterioration of performance is obtained between -theta and theta. Thus the multibeam can be radiated over a wide-angle range. At the same time, a rise of the side lobe level is suppressed without lowering the gain since the aberration caused on the surface of an opening.

2. 发明专利

JPS5840905A MULTIBEAM ANTENNA 失效
公开(公告)号：JPS5840905A
公开(公告)日：1983-03-10
申请号：JP13939881
申请日：1981-09-04
申请人： NIPPON TELEGRAPH & TELEPHONE , MITSUBISHI ELECTRIC CORP
发明人： KUMAZAWA HIROYUKI , ANDOU MAKOTO , URASAKI SHIYUUJI , HONMA YOSHIHIRO , MAKINO SHIGERU
IPC分类号： H01Q19/17 , H01Q19/19 , H01Q25/00
摘要： PURPOSE:To increase the side lobe level and to decrease the gain, by having an offset type mirror surface system to get rid of the blocking of a secondary reflector as well as a nonsecondary curved mirror surface to reduce the aberration within all faces. CONSTITUTION:A ray having a thetaS inclination to an axis Z within a horizontal face is made incident to a mirror surface curve M1M4. A mirror curves T1T5 of a secondary reflector 9 is decided under the conditions of a certain length of the optical path so that the ray goes toward the phase center F3 of a horn 1f after reflected at the curve T1T5. If the ray is made incident to the curve T1T5 from the phase center F2, a mirror curve N1N4 of a main reflector 10 can be decided. Then a mirror curve N1'N4' of the reflector 10 can be decided when the ray is made incident from the phase center F1. Furthermore a ray having a thetaS inclination is made incident to the curves N1N4 and N1'N4', and the mirror curve of the reflector 9 can be decided so as to have the convergence to the center F3 respectively. The above-mentioned procedures are successively repeated.

3. 发明专利

JPS5560308A MULTIIBEAM ANTENNA 失效
公开(公告)号：JPS5560308A
公开(公告)日：1980-05-07
申请号：JP13241578
申请日：1978-10-27
申请人： MITSUBISHI ELECTRIC CORP , NIPPON TELEGRAPH & TELEPHONE
发明人： KUMAZAWA HIROYUKI , HONMA YOSHIHIRO , KATAKI TAKASHI
IPC分类号： H01Q19/00 , H01Q25/00
摘要： PURPOSE:To increase the gain in a service area by making the greatest-diameter direction of the service area with the greatest diameter agree with the greatest- diameter direction of a beam with a beam width with the greatest diameter in the service area of the greatest diameter. CONSTITUTION:The greatest-diamter directon of a service area is equivalent to that of a segment connecting service areas T4 and T6, and main polarization direction D1 of horn H3 is so fixed that the greatest-diameter direction will agree with a polarization direction where beam width is the widest. As for the main polarization direction of a beam equivalent to another service area, main polarization of adjacent beams is inverted. Areas T4 and T6 are covered with the widest beam width, so that a decrease in gain can be lessened.

4. 发明专利

JPS5560306A RADIO WAVE TRANSMISSION LINE 失效
公开(公告)号：JPS5560306A
公开(公告)日：1980-05-07
申请号：JP13241478
申请日：1978-10-27
申请人： MITSUBISHI ELECTRIC CORP , NIPPON TELEGRAPH & TELEPHONE
发明人： KUMAZAWA HIROYUKI , HONMA YOSHIHIRO , KATAKI TAKASHI
IPC分类号： H01Q13/02
摘要： PURPOSE:To decrease leakage power with a clearance reduced in size by swelling out metal foil with tips folded to the outside of a horn from the joints of the horn and by positioning folded parts at tips of joints of the horn. CONSTITUTION:A horn which leads out radio waves fed from a feeding part is divided into horn H1 fixed at a feeding part side and outside horn H2; horn H1 rotates on axis Z as shown by D1, and horn H2 as shown by D2. From both or either joint, metal foil H3 with tips folded to the outside of the horn is swelled along the wall surface of the horn and part (e2) where foil H3 is folded is positioned at the tip of the horn. With (e2) greater than lambda/75 (lambda: wavelength), the same electric effects as those of the constitution using a metal plate of the thickness size for the horn tip can be obtained.

5. 发明专利

JPS5582507A ELECTROMAGNETIC WAVE TRANSMISSION LINE 失效
公开(公告)号：JPS5582507A
公开(公告)日：1980-06-21
申请号：JP15699578
申请日：1978-12-18
申请人： MITSUBISHI ELECTRIC CORP , NIPPON TELEGRAPH & TELEPHONE
发明人： YASAKA TETSUO , KUMAZAWA HIROYUKI , HONMA YOSHIHIRO , KATAKI TAKASHI
IPC分类号： H01P1/06 , H01Q3/04 , H01Q13/02
摘要： PURPOSE:To reduce the leakage electromagnetic waves over the entire frequency, by projecting the flat plate from the external wall of the horn at top side and connecting the cylinder to the tip of the flat plate so that the cylinder is located to the top side to this flat plate. CONSTITUTION:The joint is provided on the way of the cone horn, and the horn consists of the horn H2 at the top of cone and the horn H1 at external side. The external cylinder S encloses the horn H2 and is connected to the tip of the joint of the horn H1, and space is provided between the inner diameter of the cylinder S and the external wall of the horn H2. At the top, the cylinder which encloses the horn H2 and is shorten than the cylinder S is provided. The flat plate is projected from the external wall of the horn H2 and it is connected to the tip of the flat plate so that the cylinder S is at the top. Thus, leaked electromagnetic waves can be reduced over the full frequency.

6. 发明专利

JPS5686508A ANTENNA IN COMMON USE OF FREQUENCY 失效
公开(公告)号：JPS5686508A
公开(公告)日：1981-07-14
申请号：JP16373179
申请日：1979-12-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： HONMA YOSHIHIRO , KATAKI TAKASHI , URASAKI SHIYUUJI
IPC分类号： H01Q19/10 , H01Q5/00 , H01Q21/30
摘要： PURPOSE:To almost make the beam directions equal, by taking the wave plane of spherical waves radiated from the horn used at lower frequency bands as almost circular cone waves. CONSTITUTION:After spherical waves radiated from the horn used at lower frequency bands among a plurality of horns are reflected at the reflection mirror, the shape of the mirror surface M is determined so that the wave plane W0 is almost circular cone wave, the center direction of the wave surface is taken as the antenna reference direction. Inversely, the horn H1 is located on the line C1 on which the wave plane is strongly concentrated when plane waves are incident to the mirror surface from the antenna reference direction, so that the center of phase of horns used at other frequency bands is in coincidence, and the center axis of horns used at high frequencies is directed to the direction F0M0 where the reception level by each horn is maximum.

7. 发明专利

JPS5497351A OPENINGGSURFACE ANTENNA 失效
公开(公告)号：JPS5497351A
公开(公告)日：1979-08-01
申请号：JP454878
申请日：1978-01-19
申请人： MITSUBISHI ELECTRIC CORP
发明人： KATAKI TAKASHI , HONMA YOSHIHIRO
IPC分类号： H01Q19/18
摘要： PURPOSE:To reduce influence of a support in case that a linear serice area is an object by arranging the support symmetrically on a surface including a vertical bisector and reference direction while using this surface as the reference surface and forming an angle of less than 45 deg. against the surface including the reference direction. CONSTITUTION:The opening-surface antenna used in a frequency band higher that the microwave band is provided with four supports S1 to S4 and below on the opening surface with linearly-arranged service areas taken as objectives and at the intersection part among supports S1 to S4, subordinate reflex mirror 2 or primary radiator is arranged. When the antenna is arranged with the center point of straight line C positioned on the elongated line of the propagative direction of radio waves radiated from antenna passing through the intersection part among supports S1 to S4 using the direction as the reference one, supports S1 to S4 are arranged symmetrically on the surface including both vertical bisector (l) of straight line C and the reference direction as the reference surface and the surface including supports S1 to S4 and the reference direction is arranged at an angle of less than 45 deg..

8. 发明专利

JPS5497349A BIFOCAL LENS ANTENNA 失效
公开(公告)号：JPS5497349A
公开(公告)日：1979-08-01
申请号：JP454278
申请日：1978-01-19
申请人： MITSUBISHI ELECTRIC CORP
发明人： KATAKI TAKASHI , HONMA YOSHIHIRO
IPC分类号： H01Q19/06
摘要： PURPOSE:To prevent the gain of an antenna from lowering by reducing the square- law sum over the entire opening surface by forming a lens which allows the wave surface forming an angle of 45 deg. against a surface including the phase center and rotary axis of a primary radiator away from the rotary axis to agree with a plane perpendicular to the propagative direction of radio waves. CONSTITUTION:In the bifocal lens antenna composed of one rotation symmetric bifocal lens 1 and one or several primary radiators, lens 1 is so arranged that the wave surface at the opening surface of radio waves radiated from the primary radiator at position F away from rotation axis Z of lens 1 will agree with the plane perpendicular to the propagative direction of radio waves on the surface forming an angle of 45 deg. against surface H including the phase center of the primary radiator and rotation axis Z. Then, square-law sum S2 of difference DELTAL from the plane on the opening surface is expressed as shown by equation (6) and the gain is prevented from lowering by making the value small.

9. 发明专利

JPS5932204A Antenna device 失效
标题翻译：天线设备
公开(公告)号：JPS5932204A
公开(公告)日：1984-02-21
申请号：JP14191882
申请日：1982-08-16
申请人： Mitsubishi Electric Corp
发明人： KATAKI TAKASHI , URASAKI SHIYUUJI , HONMA YOSHIHIRO
IPC分类号： H01Q13/02 , H01P1/17
CPC分类号： H01P1/173
摘要： PURPOSE:To obtain the titled device which is easy to mass-produce and has strong mechanical and thermal strength, by forming entirely a circularly polarized wave generator with metals so as to attain easy adjustment. CONSTITUTION:One end of a straight circular waveguide 2 is taken as a short- circuit plane 9 and other end is taken as an opening plane for feeding to an electromagnetic horn 1. Further, a rectangular or a square metallic plate 8 is provided at the inside of the straight circular waveguide 2 and at a space between a coupling hole 5 of a feeding waveguide 4 and the short-circuit plane 9 (this space forms a circularly polarized wave generator 3). Further, a center axis of opposing sides of the metallic plate 8 and that of the straight waveguide 2 are made coincident and the plane of the metallic plate 8 and the plane including the center axis between the coupling hole 5 and the straight waveguide 2 are formed to have a prescribed angle alpha. An excellent circularly polarized wave is generated by adjusting the angle alpha. The strong mechanical and thermal strength is attained in this way and mass-production is attained easily.
摘要翻译：目的：为了获得易于批量生产并具有很强的机械和热强度的标题装置，通过用金属完全形成圆偏振波发生器以便容易调节。构成：将直圆形波导管2的一端作为短路面9，另一端作为向电磁喇叭1供电的开口面。此外，矩形或方形金属板8设置在在直圆形波导2的内部和馈电波导4的耦合孔5与短路平面9之间的空间（该空间形成圆极化波发生器3）。此外，金属板8和直线波导2的相对侧的中心轴线重合，并且形成金属板8的平面和包括耦合孔5和直线波导2之间的中心轴的平面具有规定的角度α。通过调整角度α产生极好的圆偏振波。以这种方式实现了强大的机械和热强度，并且容易地进行批量生产。

10. 发明专利

JPS5613811A OFFSET PARABOLA ANTENNA 失效
公开(公告)号：JPS5613811A
公开(公告)日：1981-02-10
申请号：JP8860979
申请日：1979-07-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： KATAKI TAKASHI , HONMA YOSHIHIRO
IPC分类号： H01Q19/13
摘要： PURPOSE:To obtain a right angle between the beam central direction of the radiation pattern and the central axis of the horn, by securing 90 deg. or more between the direction from the vertex to the focus of the specular surface and the central axis of the horn. CONSTITUTION:The 90 deg. or more are set for the angle formed between axis (z) in the direction from the vertex to focus F of specular surface 2 and the central axis direction C1 of horn 1. And in case the horn is used with the feed by only a polarized wave, the shift is calculated between axis (z) and the beam's center direction of the antenna's radiation pattern of the polarized wave. Then an angle of 90 deg. or more is set with the value calculated above between axis (z) and central axis C1. In such way, the central direction of the beam can cross vertically the central axis of the horn. As a result, the antenna mobile part can be simplified for scanning of the beam, and also the same region can be observed with each antenna in case plural units of antennas are used.

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