公开(公告)号：US5734305A

公开(公告)日：1998-03-31

申请号：US620277

申请日：1996-03-22

申请人： Kimmo Ervasti

发明人： Kimmo Ervasti

IPC分类号： H01P1/203 ,  H01P1/205 ,  H01P7/00 ,  H04B1/40 ,  H01P1/20

CPC分类号： H01P1/205 ,  H01P7/00

摘要： The invention relates to a resonator structure and radio frequency filter in which the resonating frequency of a transmission line resonator can be switched in a stepwise manner between at least three values. The switching is implemented as follows: a regulating element including a switch that has at least three states is arranged in connection with the resonator. The three states of the switch correspond to different values of the specific impedance and, hence, the resonating frequency of the transmission line resonator. The regulating element is in accordance with a known arrangement: it may be e.g. a coupling element formed of a strip line on the surface of a low-loss substrate or ceramic, or a side circuit including a capacitive and inductive element, coupled to the resonator. In the former example the switch is open in its first state, in its second state it grounds one end of the coupling element directly and in its other states it grounds the end of the coupling element through differently dimensioned transmission lines. In the latter implementation the switch is open in its first state, in its second state it forms at the side circuit a capacitive-inductive coupling in series and in its third state it bypasses the inductive element.

摘要翻译： 本发明涉及一种谐振器结构和射频滤波器，其中传输线谐振器的谐振频率可以在至少三个值之间以分段方式切换。 切换实现如下：包括具有至少三个状态的开关的调节元件被布置成与谐振器连接。 开关的三个状态对应于特定阻抗的不同值，因此对应于传输线谐振器的谐振频率。 调节元件符合已知的布置： 由低损耗衬底或陶瓷的表面上的带状线或包括耦合到谐振器的电容和电感元件的侧电路形成的耦合元件。 在前一个例子中，开关处于第一状态，在其第二状态下，它直接接地耦合元件的一端，而在其它状态下，它通过不同尺寸的传输线将耦合元件的端部接地。 在后一种实施方式中，开关处于其第一状态，其第二状态在侧电路处形成串联的电容感应耦合，并且在其第三状态下绕过电感元件。

公开(公告)号：US5675301A

公开(公告)日：1997-10-07

申请号：US447647

申请日：1995-05-23

申请人： Pauli Nappa ,  Jouni Ala-Kojola

发明人： Pauli Nappa ,  Jouni Ala-Kojola

IPC分类号： H01P1/205 ,  H01P1/20

CPC分类号： H01P1/2056

摘要： A dielectric filter advantageously comprises a body of a dielectric material rectangular in cross-section and confining at least two parallel holes (31', 32', 33') that extend through the body parallel to each other and parallel to the side surface (34) plane. Major portions of the body are coated with a conductive material which also covers the inner surfaces of the holes (31', 32', 33'), hence forming a transmission line resonator for each hole. The resonators may be quarter-wave or half-wave resonators. According to the invention, the holes are located on at least two lines in the long direction of the body in which case the center axis of at least one hole (32') is not located on the same plane parallel to the side surface (34) as the center axes of the rest of the holes. Advantageously, the distance (D) of the center axis of a hole from the center axis of an adjacent hole is identical for all holes. In this manner it is possible to manufacture a filter that has a smaller volume than a filter with identical electrical characteristics having all the holes on one line.

摘要翻译： 介电滤波器有利地包括绝缘体的主体，其横截面为矩形，并限制至少两个平行孔（31'，32'，33'），平行于平行于侧表面（34）的平行孔 ）飞机。 身体的主要部分涂覆有也覆盖孔（31'，32'，33'）的内表面的导电材料，因此为每个孔形成传输线谐振器。 谐振器可以是四分之一波或半波谐振器。 根据本发明，孔位于主体的长方向上的至少两条线上，在这种情况下，至少一个孔（32'）的中心轴线不位于与侧面（34）平行的同一平面上 ）作为其余孔的中心轴。 有利地，孔的中心轴距离相邻孔的中心轴线的距离（D）对于所有孔是相同的。 以这种方式，可以制造具有比具有相同电特性的滤波器更小的体积的滤波器，其具有一行上的所有孔。

公开(公告)号：US5604471A

公开(公告)日：1997-02-18

申请号：US403380

申请日：1995-03-15

申请人： Tapio Rattila ,  Pertti Puurunen ,  Seppo Salmela ,  Jarmo Valtonen ,  Kari Lohtander

发明人： Tapio Rattila ,  Pertti Puurunen ,  Seppo Salmela ,  Jarmo Valtonen ,  Kari Lohtander

IPC分类号： H01P1/20 ,  H01P7/00

CPC分类号： H01P7/005

摘要： The present invention relates to a coupling element (21) by which the coupling of a resonator (24) is adjusted in a radio frequency filter. The coupling element of the invention is a strip made of flexible conductor material being shaped symmetrical relative to the normal, that is, the symmetry axis of the longitudinal axis extending via the centrepoint of the strip in the longitudinal direction. The strip (21) is fixed at least at two points of an edge in the longitudinal direction to the circuit board (25) either by surface mounting on pads (33, 35, 36) or by soldering into holes borred in the circuit board to be at appropriate space from the resonator coil (34) and from the surface of the circuit board (25). One (33) of the fixing points is grounded and another (36) is connected to the signal conductor in the filter. The coupling can easily be adjusted by bending the board relative to the symmetry axis either one-sidedly or on both sides.

摘要翻译： 本发明涉及耦合元件（21），在射频滤波器中调节谐振器（24）的耦合。 本发明的耦合元件是由柔性导体材料制成的条带，其相对于法线成对称的形状，即纵向轴线的对称轴线沿着纵向方向延伸穿过条带的中心点。 条带（21）通过表面安装在焊盘（33,35,36）上或通过焊接到电路板中的孔中而至少在纵向方向上的边缘的两个点处固定到电路板（25），以至 在谐振器线圈（34）和电路板（25）的表面的适当空间处。 一个（33）的固定点接地，另一个（36）连接到过滤器中的信号导体。 可以通过单面或两侧相对于对称轴弯曲板来容易地调整联轴器。

公开(公告)号：US5585771A

公开(公告)日：1996-12-17

申请号：US363234

申请日：1994-12-23

申请人： Kimmo Ervasti ,  Seppo Ojantakanen

发明人： Kimmo Ervasti ,  Seppo Ojantakanen

IPC分类号： H01P1/20 ,  H01P1/205 ,  H01P7/00

CPC分类号： H01P1/2053

摘要： The present invention relates to a radio frequency filter the resonators (6,7) of which are made up of a wire wound into a cylindrical coil comprising a number of turns and of a surrounding casing (41). Finger-like projections (3) of an insulating plate (1) support the conical coils from the inside, and the coupling to the resonator is from a microstrip line (8), at a tap point (21), on the insulating plate. Each cylindrical coil has, adjoining the first turn, a straight portion (2) which is parallel to the axis of the cylindrical coil and extends towards the bottom plate (44) of the filter. On the inside surface of the bottom plate (44) there is a lead (51) one end (E) of which is short-circuited and the other end open, and the tip (12) of the straight portion (2) adjoining the cylindrical coil (6) is in contact with this lead (51). In this case, in spite of any rotation of the cylindrical coil relative to its own axis at the assembling stage of the filter, the distance of the tap point from the short-circuited end (E) of the lead (51) will remain unchanged, in which case the tap impedance will not change. The lead (51) is preferably a microstrip line on the surface of the insulating plate.

摘要翻译： 射频滤波器技术领域本发明涉及一种射频滤波器，其中共振器（6,7）由缠绕成包括多个圈的圆柱形线圈的线材和围绕的壳体（41）组成。 绝缘板（1）的指状突起（3）从内侧支撑圆锥形线圈，并且与谐振器的耦合来自绝缘板上的微带线（8），在分接点（21）处。 每个圆柱形线圈具有与第一匝相邻的直线部分（2），其平行于圆柱形线圈的轴线并朝着过滤器的底板（44）延伸。 在底板（44）的内表面上有一个引线（51），一端（E）短路，另一端断开，直线部分（2）的尖端（12）与 圆柱形线圈（6）与该引线（51）接触。 在这种情况下，尽管在过滤器的组装阶段，尽管圆柱形线圈相对于其自己的轴线旋转，但引线（51）的短路端（E）的距离将保持不变 在这种情况下，抽头阻抗不会改变。 引线（51）优选是绝缘板表面上的微带线。

公开(公告)号：US5570071A

公开(公告)日：1996-10-29

申请号：US146037

申请日：1992-10-23

申请人： Kimmo A. Ervasti

发明人： Kimmo A. Ervasti

IPC分类号： H01P7/00

CPC分类号： H01P7/005

摘要： In the mechanical supporting of the resonator coil it is known to use around the resonator coil an injection moulded plastic U-shaped binder ring, with the loops of the coil running through the arms in the binder ring. The resonator wire can also be wound around a plastic body. The methods of the prior art considerably weaken the Q value of the resonator. According to the invention it is possible to achieve good supporting, without a weakening of the Q value, in such a way that the resonator coil (1) is supported from at least one point by a supporting leg (6) of metal, which one end is fastened to the wire of the resonator coil (1) and the other end is fastened to an insulation piece (8) having low losses, which in turn is fastened to the installation plate.

摘要翻译： 在谐振器线圈的机械支撑中，已知在谐振器线圈周围使用注射成型的塑料U形结合环，线圈的环线穿过绑扎环中的臂。 谐振器线也可以缠绕在塑料体上。 现有技术的方法显着削弱了谐振器的Q值。 根据本发明，可以在没有衰减Q值的情况下实现良好的支撑，使得谐振器线圈（1）由金属的支撑腿（6）从至少一个点支撑，其中一个 端部被紧固到谐振器线圈（1）的导线上，另一端紧固到具有低损耗的绝缘件（8）上，该绝缘件又被紧固到安装板上。

公开(公告)号：US5541560A

公开(公告)日：1996-07-30

申请号：US202940

申请日：1994-02-28

申请人： Aimo Turunen ,  Heli Jantunen

发明人： Aimo Turunen ,  Heli Jantunen

IPC分类号： H01P1/10 ,  H01P1/205 ,  H01P1/202

CPC分类号： H01P1/2056

摘要： A dielectric filter (1) comprises a body of dielectric material, having two bores (3) running therethrough acting as resonators. The sides of the body are covered in a metallic coating apart from an upper surface (2) and one side surface (4). Electrode patterns are provided on the uncoated side surface to provide inductive and capacitive coupling between the resonators. By providing switches 8, the ratio of inductive to capacitive coupling can be changed thus allowing the filter to act as a bandstop or bandpass filter depending upon whether the switches are open or closed.

摘要翻译： 介质滤波器（1）包括介电材料体，其具有作为谐振器的两个穿过其中的孔（3）。 身体的侧面被覆盖在远离上表面（2）和一个侧表面（4）的金属涂层中。 在未涂覆的侧表面上提供电极图案，以在谐振器之间提供感应和电容耦合。 通过提供开关8，可以改变感应到电容耦合的比率，从而允许滤波器用作带阻或带通滤波器，这取决于开关是开或关。

公开(公告)号：US5467065A

公开(公告)日：1995-11-14

申请号：US202901

申请日：1994-02-28

申请人： Aimo Turunen ,  Heli Jantunen

发明人： Aimo Turunen ,  Heli Jantunen

IPC分类号： H04B1/38 ,  H01P1/203 ,  H03H9/64 ,  H03H9/72 ,  H03H7/46 ,  H01P1/213

CPC分类号： H01P1/2039 ,  H01P1/203

摘要： A filter, particularly suitable for radio frequency applications comprises a first filter which, in turn, comprises at least a pair of intercoupled resonators (RES1, RES2), and a SAW filter (SAW) which is coupled between the two intercoupled resonators so that a signal input to the filter at its input (IN) is coupled through the SAW filter to provide an output signal at its output (OUT). This provides a filter with all the advantages of a SAW filter, but with the ability to withstand the high power requirements of radio frequency applications. If three or more resonators are present in the first filter, then an amplifier can also be integrated in the filter. The SAW filter (and the amplifier if present) are inductively or capacitively coupled to the resonators depending upon the type of filter that is required.

摘要翻译： 特别适用于射频应用的滤波器包括第一滤波器，该滤波器又包括耦合在两个互耦合谐振器之间的至少一对相互耦合的谐振器（RES1，RES2）和SAW滤波器（SAW），使得 在其输入（IN）处输入到滤波器的信号通过SAW滤波器耦合以在其输出（OUT）处提供输出信号。 这提供了具有SAW滤波器的所有优点的滤波器，但具有承受射频应用的高功率需求的能力。 如果在第一滤波器中存在三个或更多个谐振器，则放大器也可以集成在滤波器中。 SAW滤波器（和放大器（如果存在））根据所需的滤波器的类型感应或电容耦合到谐振器。

公开(公告)号：US5408206A

公开(公告)日：1995-04-18

申请号：US58525

申请日：1993-05-06

申请人： Aimo Turunen ,  Heli Jantunen

发明人： Aimo Turunen ,  Heli Jantunen

IPC分类号： H01P1/203 ,  H01P7/08

CPC分类号： H01P11/008 ,  H01P1/203 ,  H01P7/082 ,  H01P7/084

摘要： The present invention relates to a resonator structure composed of two dielectric pieces. On the upper surface of a first piece (1) is provided a groove (7) extending across the entire surface and coated with an electrically conductive agent, said coating being at least in one end connected with an electrically conductive coating serving as a ground plane, so that the groove (7) forms a transmission line resonator. On the upper surface of the second piece (2) is provided a conductive strip (9) running in the middle of the surface, said strip forming a transmission line resonator. The pieces (1,2) are placed with the upper surfaces thereof against each other and attached to each other so that the groove (7) and the strip (9) are against one another in parallel, whereby the groove and the strip together form a resonator.

摘要翻译： 本发明涉及由两个电介质片构成的谐振器结构。 在第一件（1）的上表面上设置有横跨整个表面并涂覆有导电剂的槽（7），所述涂层至少在一端与用作接地平面的导电涂层相连 ，使得凹槽（7）形成传输线谐振器。 在第二部件（2）的上表面设置有在表面中间延伸的导电条（9），所述条形成传输线谐振器。 这些片（1,2）被放置成使它们的上表面彼此相对并且彼此附接，使得凹槽（7）和条带（9）彼此平行地彼此抵接，由此凹槽和条带一起形成 谐振器。

公开(公告)号：US5387886A

公开(公告)日：1995-02-07

申请号：US58772

申请日：1993-05-07

申请人： Tapio Takalo ,  Aimo Turunen ,  Pauli Nappa

发明人： Tapio Takalo ,  Aimo Turunen ,  Pauli Nappa

IPC分类号： H01P1/10 ,  H01P1/213 ,  H01P7/00 ,  H01P7/04 ,  H01P7/08 ,  H04B1/38 ,  H04B1/48 ,  H04B1/56 ,  H01P5/12

CPC分类号： H04B1/56 ,  H04B1/48

摘要： The invention discloses a three-port filter being able to connect alternately a receiver and a transmitter to a common antenna in a ratio system operating by the time division principle. The first signal path between the first and the third ports comprises all resonators (R1, R2, R3, R4). The second port is connected to one (e.g. R3) of the resonators in the first signal path, whereby a first subset (R1, R2) of resonators lies between the first and the second ports, and a second subset (R3, R4) of resonators forming the signal path between the second and the third ports lies between the second and the third ports. The resonators of either subset are switchable resonators, whose resonance frequencies can be shifted between two frequencies by an external control (Control). At the first control value of the control (Control) the resonators of this subset pass the RF-signal substantially without attenuation, and at the second control value they strongly attenuate said signal.

摘要翻译： 本发明公开了一种三端口滤波器，其能够以接收机和发射机交替地连接到以时分原理工作的比率系统中的公共天线。 第一和第三端口之间的第一信号路径包括所有谐振器（R1，R2，R3，R4）。 第二端口连接到第一信号路径中的谐振器的一个（例如，R3），由此谐振器的第一子集（R1，R2）位于第一和第二端口之间，并且第二子集（R3，R4） 形成第二和第三端口之间的信号路径的谐振器位于第二和第三端口之间。 任一子集的谐振器是可切换谐振器，其谐振频率可以通过外部控制（Control）在两个频率之间移动。 在控制（控制）的第一控制值下，该子集的谐振器基本上没有衰减地传递RF信号，并且在第二控制值下，它们强烈地衰减所述信号。

公开(公告)号：US5349315A

公开(公告)日：1994-09-20

申请号：US171209

申请日：1993-12-21

申请人： Jouni Ala-Kojola

发明人： Jouni Ala-Kojola

IPC分类号： H01P1/205 ,  H01P1/212 ,  H01P7/04 ,  H01P7/08 ,  H01P1/20

CPC分类号： H01P1/2056

摘要： A ceramic filter can be made small in size by forming one or more strip-line resonators (5) on a side surface (4) of the ceramic resonator, the side surface additionally having contact and coupling electrodes which can be formed using the same mask as for the strip-line resonators. The strip-line resonators (5) produce zeros in the transfer function of the filter and thereby increase the attenuation at a desired frequency, e.g. the image frequency.

摘要翻译： 通过在陶瓷谐振器的侧表面（4）上形成一个或多个带状线谐振器（5），可以使陶瓷滤波器的尺寸变小，侧表面另外具有可使用相同掩模形成的接触和耦合电极 对于带状线谐振器。 带状线谐振器（5）在滤波器的传递函数中产生零，从而增加期望频率处的衰减，例如。 图像频率。