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    • 1. 发明授权
    • Narrow bandwidth microstrip filter
    • 窄带宽微带滤波器
    • US4551696A
    • 1985-11-05
    • US562330
    • 1983-12-16
    • Michael F. MoutrieRaymond L. SokolaCharles Choi
    • Michael F. MoutrieRaymond L. SokolaCharles Choi
    • H01P1/203H01P7/08
    • H01P1/20336
    • An interdigital microstrip transmission line filter (100) includes three electrically conductive strips (104, 106 and 108) each coupled to grounded portions (110 and 120) on one end and coupled to respective capacitive loading pads (112, 116 and 114) on the other end. Input and output pads (130 and 140) may be coupled to signals from other circuitry located off or on the same substrate (150). Grounded portion (110) extends between capacitive loading pads (112 and 114) for minimizing undesired coupling between non-adjacent strips (104 and 108). As a result, the unique microstrip filter (100) has a frequency response that is substantially devoid of passband transmission zeros.
    • 叉指微带传输线滤波器(100)包括三个导电条(104,106和108),每个导电条耦合到一端上的接地部分(110和120),并耦合到相应的电容加载焊盘(112,116和114) 另一端 输入和输出焊盘(130和140)可以耦合到位于相同基板(150)上或其上的其它电路的信号。 接地部分(110)在电容性负载焊盘(112和114)之间延伸,以最小化非相邻条带(104和108)之间的不期望的耦合。 结果,独特的微带滤波器(100)具有基本上没有通带传输零的频率响应。
    • 6. 发明授权
    • Single-block filter for antenna duplexing and antenna-switched diversity
    • 单块滤波器,用于天线双工和天线切换分集
    • US5241693A
    • 1993-08-31
    • US840597
    • 1992-02-19
    • Jin D. KimMichael F. MoutrieRichard S. Kommrusch
    • Jin D. KimMichael F. MoutrieRichard S. Kommrusch
    • H04B1/52H04B7/08
    • H04B7/0802H04B1/52
    • A single-block ceramic filter (102) is coupled to two antennas (142 and 144) for providing both antenna duplexing and antenna-switched diversity in a duplex radio transceiver (100). One antenna (142) is coupled by the filter (102) to a transmitter (132), and both antennas (142 and 144) are switchably coupled by the filter (102) to a receiver (130) by diversity control circuitry (101) in response to a diversity control signal (137). A microcomputer (134) in the transceiver (100) is coupled to the receiver (130) for monitoring the received signal strength (135). When the received signal strength (135) drops in level indicating that the signal being received on one of the antennas (142 or 144) has become degraded due to fading or other interference, the microcomputer (134) changes the binary state of the diversity control signal (137) for switching the receiver (130) to the other one of the antennas (142 or 144 ).
    • 单块陶瓷滤波器(102)耦合到两个天线(142和144),用于在双工无线电收发器(100)中提供天线双工和天线切换分集。 一个天线(142)由滤波器(102)耦合到发射机(132),并且两个天线(142和144)由分集控制电路(101)由滤波器(102)可切换地耦合到接收器(130) 响应分集控制信号(137)。 收发器(100)中的微计算机(134)耦合到接收器(130),用于监视接收信号强度(135)。 当接收到的信号强度(135)下降到指示在天线(142或144)之一上接收的信号由于衰落或其他干扰而变得恶化时,微计算机(134)改变分集控制的二进制状态 信号(137),用于将接收机(130)切换到另一个天线(142或144)。
    • 8. 发明授权
    • Ceramic block filter with co-fired coupling pins
    • 陶瓷块式过滤器,共同连接销
    • US5010309A
    • 1991-04-23
    • US455725
    • 1989-12-22
    • Keith R. ManssenMichael F. Moutrie
    • Keith R. ManssenMichael F. Moutrie
    • H01P1/205H05K3/34
    • H01P1/2056H05K3/3426Y02P70/613
    • A ceramic block filter (100) includes coupling pins (101 and 102) disposed in holes (124 and 125) in corresponding electrodes (121 and 122) for interconnecting the filter to radio frequency devices, such as a radio transceiver. During manufacture of the filter (100), the coupling pins (101 and 102) are bonded to conductive material (131) of the holes (124 and 125) and corresponding electrodes (121 and 122) when the rest of the conductive material (160) is fired. To facilitate the electrical bond during the manufacturing process, the coupling pins (101 and 102) may be silver or silver plated and co-fired at the same time. Since the coupling pins (101 and 102) are fired at the same time as the rest of the conductive material, a reliable and inexpensive bond is achieved between the coupling pins (101 and 102) and the conductive material of the holes (124 and 125) and corresponding electrodes ( 121 and 122).
    • 陶瓷块状过滤器(100)包括设置在相应电极(121和122)中的孔(124和125)中的连接销(101和102),用于将过滤器与诸如无线电收发器的射频设备互连。 在过滤器(100)的制造过程中,当导电材料(160)的其余部分(160)和(102)的连接销(101和102)被连接到孔(124和125)的导电材料(131) )被解雇。 为了在制造过程中促进电接合,联接销(101和102)可以是银或镀银并同时共烧。 由于耦合销(101和102)与导电材料的其余部分同时烧制,所以在耦合销(101和102)与孔(124和125)的导电材料之间实现了可靠且廉价的接合 )和相应的电极(121和122)。