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1. 发明授权

US5473284A Oscillator frequency control loop based on long term average of frequency difference 失效
标题翻译：基于频率差的长期平均振荡器频率控制回路
公开(公告)号：US5473284A
公开(公告)日：1995-12-05
申请号：US313149
申请日：1994-11-30
申请人： Arto Jantti , Risto Saukkonen , Veli Juola , Lassi Vaananen , Tapani Karki
发明人： Arto Jantti , Risto Saukkonen , Veli Juola , Lassi Vaananen , Tapani Karki
IPC分类号： H03L7/06 , H03L1/00 , H03L3/00 , H03L7/10 , H04Q7/36
CPC分类号： H03L7/10 , H03L3/00
摘要： An oscillator unit for a base station or the like in a digital cellular radio network. The oscillator unit includes an adjustable oven stabilized crystal oscillator (21). The oscillator unit additionally includes a non-volatile memory (27), in which is stored a control information defining the frequency of the oven stabilized crystal oscillator (21) at the start of the oscillator unit, apparatus (30, 31, 32) for deriving a reference frequency from a fixed digital transmission connection, such as a PCM connection, between the base station and the remaining cellular radio network, a frequency control loop (21, 22, 23, 24) for maintaining a long-term stability for the oven stabilized crystal oscillator (21) on the basis of a long-term average of the difference between the frequency of the oven stabilized crystal oscillator and the reference frequency.
摘要翻译： PCT No.PCT / FI93 / 00129 Sec。 371日期1994年11月30日 102（e）1994年11月30日日期PCT 1993年3月30日PCT公布。出版物WO93 / 20619 日期：1993年10月14日。在数字蜂窝无线电网络中用于基站等的振荡器单元。振荡器单元包括可调节的炉子稳定的晶体振荡器（21）。所述振荡器单元还包括非易失性存储器（27），其中存储了在所述振荡器单元的起始处定义所述恒温晶体振荡器（21）的频率的控制信息，所述装置（30,31,32）用于从基站和剩余的蜂窝无线电网络之间的固定数字传输连接（例如PCM连接）导出参考频率，频率控制回路（21,22,23,24），用于维持对于所述基站的长期稳定性基于炉稳定晶体振荡器的频率与参考频率之间的差的长期平均值来确定炉稳定晶体振荡器（21）。

2. 发明授权

US5448769A Method for tuning the medium frequency of an RF bandpass filter by determining and interpolating in relation to medium frequencies at and offsets from a nominal carrier frequency 失效
标题翻译：通过相对于标称载波频率处的中频和偏移来确定和内插RF带通滤波器的中频的方法
公开(公告)号：US5448769A
公开(公告)日：1995-09-05
申请号：US150132
申请日：1993-11-30
申请人： Arto Jantti
发明人： Arto Jantti
IPC分类号： H03J3/00 , H03H7/46 , H03J1/00 , H04B1/04
CPC分类号： H03J1/0075 , H03H7/468
摘要： A method for tuning an RF bandpass filter, especially a combiner filter (10.sub.1, 10.sub.2. . . 10.sub.n) belonging to a GSM system, in which an RF signal having a certain nominal carrier frequency (f.sub.c) is inputted into the RF bandpass filter and a medium frequency of a pass band of the RF bandpass filter is tuned depending on an RF power propagating through the bandpass filter or on an RF power reflected from an input of the bandpass filter. For an easier tuning of the filter and for a tuning accuracy better than before, (a) a carrier is modulated by a signal causing a first predetermined offset (+.DELTA.f), of the carrier frequency, (b) a medium frequency, at which the power propagating through the filter is at the maximum or the power reflected from the input of the filter is at the minimum, is searched for for the bandpass filter, (c) the first medium frequency obtained at stage (b) is stored, (d) the carrier is modulated by a signal causing a second predetermined offset (-.DELTA.f) of the carrier frequency, (e) a medium frequency, at which the power propagating through the filter is at the maximum or the power reflected from the input of the filter is at the minimum, is searched for for the bandpass filter, (f) the second medium frequency obtained at stage (e) is stored, and (g) the filter is tuned by tuning its medium frequency to a value determined on the basis of the frequency values obtained at stages (c) and (f).
摘要翻译： PCT No.PCT / FI93 / 00128 Sec。 371日期：1993年11月30日 102（e）日期1993年11月30日PCT 1993年3月30日PCT公布。公开号WO93 / 20616 PCT 日期：1993年10月14日。一种用于调谐RF带通滤波器，特别是属于GSM系统的组合器滤波器（101,102,10.2n）的方法，其中具有特定标称载波频率（fc）的RF信号是输入到RF带通滤波器中，并且根据通过带通滤波器传播的RF功率或从带通滤波器的输入反射的RF功率来调整RF带通滤波器的通带的中频。为了更容易地对滤波器进行调谐并且比以前更好地调谐调谐精度，（a）通过信号调制载波，该信号导致载波频率的第一预定偏移（+ DELTA f），（b）中频通过滤波器传播的功率处于最大或从滤波器的输入反射的功率为最小，搜索带通滤波器，（c）存储在阶段（b）获得的第一中频，（d）通过导致载波频率的第二预定偏移（ - DELTA f）的信号来调制载波，（e）中频通过滤波器传播的功率处于最大值或从该频率反射的功率滤波器的输入为最小，搜索带通滤波器，（f）存储在阶段（e）处获得的第二中频，并且（g）通过将其中频调谐到确定的值来调谐滤波器基于在阶段（c）和（f）获得的频率值。

3. 发明授权

US5752161A Method and apparatus for replacing a failed channel unit of a sectored base station, in a cellular radio system, with an additional channel unit 失效
标题翻译：用于在蜂窝无线电系统中用附加信道单元替换扇区基站的故障信道单元的方法和装置
公开(公告)号：US5752161A
公开(公告)日：1998-05-12
申请号：US619729
申请日：1996-03-22
申请人： Arto Jantti , Keijo Katisko
发明人： Arto Jantti , Keijo Katisko
IPC分类号： H04B1/74 , H04B7/26 , H04W16/24 , H04W24/02 , H04B3/36 , H04B7/14
CPC分类号： H04B1/74 , H04W24/04 , H04W16/24
摘要： A method for securing the operation of a base station having a radio coverage area divided into at least two sectors, and a base station having antennas, with combiners and branching units, and at least one channel unit for each sector, which allow the base station to establish a radio connection with active radio transceivers currently located in the base station sectors. In the method, the base station is provided with an additional channel unit the traffic capacity of which is selectably switchable to one of the base station sectors. To secure the operation of the base station when one of the channel units fails, the operation of the channel units of the base station is monitored. When one of the channel units fails, the additional channel unit is connected to the antenna of the sector of the failed channel unit by a switch, which connects the antenna attachments of the additional channel unit to the antenna of one sector at a time.
摘要翻译： PCT No.PCT / FI94 / 00424 Sec。 371日期：1996年3月22日 102（e）1996年3月22日PCT PCT 1994年9月22日PCT公布。第WO95 / 08875号公报日期1995年3月30日一种用于确保具有划分为至少两个扇区的无线电覆盖区域的基站和具有组合器和分支单元的天线基站以及每个扇区的至少一个信道单元的操作的方法，这允许基站与当前位于基站扇区中的主动无线电收发器建立无线电连接。在该方法中，基站具有其业务容量可选地切换到基站扇区之一的附加信道单元。为了在一个信道单元发生故障时确保基站的操作，监视基站的信道单元的操作。当通道单元之一发生故障时，附加通道单元通过开关连接到故障通道单元的扇区的天线，该开关将附加通道单元的天线附件一次连接到一个扇区的天线。

4. 发明授权

US5566750A Method and apparatus for cooling hot gases 失效
标题翻译：用于冷却热气体的方法和装置
公开(公告)号：US5566750A
公开(公告)日：1996-10-22
申请号：US436207
申请日：1995-06-20
申请人： Olli E. Arpalahti , Ossi Ikonen , Arto Jantti
发明人： Olli E. Arpalahti , Ossi Ikonen , Arto Jantti
IPC分类号： F28D13/00 , F27B15/00 , F27D9/00 , F27D17/00
CPC分类号： F27D17/004 , F27B15/00 , F27D2009/0083 , F27D2017/006
摘要： The invention relates to a method and apparatus for cooling the exhaust gases of a molten stage furnace. The method relates to furnace structures in which the shaft (3) is vertical and the exhaust gases are passed through an outlet in the furnace roof to the cooling equipment without recovering heat from the exhaust gases through the wall portions above the furnace. The exhaust gases are cooled in two stages first indirectly by a circulating mass cooler (1) and then further in a waste heat recovery boiler. In the apparatus according to the invention, the vertical shaft section above the furnace is connected to a circulating mass cooler which is connected to a waste heat recovery boiler arranged, e.g., next to the furnace and/or the shaft.
摘要翻译：本发明涉及一种用于冷却熔融级炉的废气的方法和装置。该方法涉及其中轴（3）垂直并且废气通过炉顶中的出口通向冷却设备的炉结构，而不通过炉上方的壁部分从废气中回收热量。排气首先通过循环质量冷却器（1）间接冷却，然后进一步在废热回收锅炉中冷却。在根据本发明的装置中，炉子上方的垂直轴段连接到循环质量冷却器，循环质量冷却器连接到例如在炉子和/或轴旁边排列的废热回收锅炉。

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