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1. 发明授权

US6091963A Multi-frequency band receiver for RF signal 失效
标题翻译：用于RF信号的多频带接收机
公开(公告)号：US6091963A
公开(公告)日：2000-07-18
申请号：US6867
申请日：1998-01-14
申请人： Jacob Mannerstr.ang.le , Martin Isberg , Bjorn Lindquist , Torsten Carlsson , Hans Hagberg , Peter Jakobsson , Lars Kunkel , Kjell Gustafsson
发明人： Jacob Mannerstr.ang.le , Martin Isberg , Bjorn Lindquist , Torsten Carlsson , Hans Hagberg , Peter Jakobsson , Lars Kunkel , Kjell Gustafsson
IPC分类号： H04B1/26 , H03D3/00 , H04B1/40 , H04B1/18
CPC分类号： H04B1/0057 , H03D3/007 , H04B1/005 , H04B1/406
摘要： The present invention relates to a receiver device comprising a receiver (104) adapted to receive radio signals in two frequency bands (FB1, FB2). The radio signals in one of the frequency bands (FB1) constitute communication signals for a radio system (AMPS, NMT) having a certain channel spacing, whereas the radio signals of the second frequency band (FB2) constitutes communication signals for a second radio system (PCS1900, DCS1800, GSM) having a second certain channel spacing. The receiver (104) comprises two inputs (108, 11) each intended for a radio system having different frequency bands and channel spacing. For radio signals occurring on one input (108), mixing is performed from the RF range directly to the baseband frequency range. For radio signals occurring on the second input (108) the mixing from the radio frequency range to the baseband frequency range is carried out through an intermediate frequency range. Further the receiver (104) comprises an output (112) intended to deliver baseband signals for both radio systems. The output (112) is connected to a baseband unit which is common to the radio systems. In the baseband unit, among other things, lowpass filtering, detection and neighbouring channel suppression are performed on the received radio signal that has been mixed down to the baseband frequency range.
摘要翻译：本发明涉及一种接收机设备，包括适于接收两个频带（FB1，FB2）中的无线电信号的接收机（104）。一个频带（FB1）中的无线电信号构成具有一定信道间隔的无线电系统（AMPS，NMT）的通信信号，而第二频带（FB2）的无线电信号构成用于第二无线电系统（PCS1900，DCS1800，GSM）具有第二特定信道间隔。接收器（104）包括两个输入端（108,11），每个输入端用于具有不同频带和信道间隔的无线电系统。对于在一个输入（108）上发生的无线电信号，从RF范围直接到基带频率范围进行混频。对于在第二输入（108）上发生的无线电信号，通过中频范围执行从射频范围到基带频率范围的混合。此外，接收器（104）包括旨在为两个无线电系统传送基带信号的输出（112）。输出（112）连接到无线电系统共用的基带单元。在基带单元中，对已经混合到基带频率范围的接收无线电信号执行低通滤波，检测和相邻信道抑制。

2. 发明授权

US6029052A Multiple-mode direct conversion receiver 失效
标题翻译：多模直接转换接收机
公开(公告)号：US6029052A
公开(公告)日：2000-02-22
申请号：US886244
申请日：1997-07-01
申请人： Martin Isberg , Bjorn Lindquist , Peter Jakobsson , Jan Celander , Kjell Gustafsson , Lars-Peter Kunkel , Torsten Carlsson , Jacob Mannerstr.ang.le
发明人： Martin Isberg , Bjorn Lindquist , Peter Jakobsson , Jan Celander , Kjell Gustafsson , Lars-Peter Kunkel , Torsten Carlsson , Jacob Mannerstr.ang.le
IPC分类号： H04L27/22 , H03J5/24 , H04B1/16 , H04B1/30 , H04B1/40 , H04J1/04 , H04W88/06 , H04Q7/32
CPC分类号： H04W88/06 , H03J5/244 , H04B1/005 , H04B1/0057 , H04B1/006 , H04B1/406
摘要： A multiple-mode receiver incorporating direct conversion (processing received signals using intermediate frequencies within the same frequency range as the received signal bandwidth) rather than superheterodyne circuitry, allowing receiver hardware components to be re-used rather than replicated for each band. Various embodiments are disclosed in which low pass filters, mixers, quadrature generators, oscillators, and amplifiers are re-used.
摘要翻译：包括直接转换的多模式接收机（处理使用与接收信号带宽相同的频率范围内的中频）的接收信号，而不是超外差电路，允许重复使用接收机硬件组件而不是复制每个频带。公开了各种实施例，其中重新使用低通滤波器，混频器，正交发生器，振荡器和放大器。

3. 发明授权

US6078228A Arrangement and method for phase shifting signals in a telesystem 失效
标题翻译：电信系统中相移信号的布置和方法
公开(公告)号：US6078228A
公开(公告)日：2000-06-20
申请号：US854680
申请日：1997-05-12
申请人： Jacob Mannerstr.ang.le
发明人： Jacob Mannerstr.ang.le
IPC分类号： H03H11/20 , H01P1/18 , H01P9/00
CPC分类号： H03H11/20
摘要： A phase shifting electric circuit (1) comprises units for conveying an input signal (V1) from a main signal input (12) to a main signal output (11). The circuit (1) has a first signal path (18), from the input (12) to the output (11), along which a connectable and disconnectable first active unit (3) is arranged and also a second signal path (19) along which a connectable and disconnectable second active unit (4) and a 180 degrees phase shifting unit (2) are arranged. By a method a selection is made which of the active units (3,4) is to be in a connected condition after which control signals (U1,U2) to the units (3,4) sets them in a connected and disconnected condition respectively with the outcome of a transmission from the output (11), depending on the selection, either a non-phase shifted signal (V1') or a 180 degrees phase shifted signal (V2'). Depending on the function of the active units (3,4) the signal (V1',V2') can also be affected in other respects than its relative phase.
摘要翻译：相移电路（1）包括用于将输入信号（V1）从主信号输入（12）传送到主信号输出（11）的单元。电路（1）具有从输入（12）到输出（11）的第一信号路径（18），沿着该第一信号路径布置可连接和可断开的第一有源单元（3），并且第二信号路径（19）连接和可断开的第二有源单元（4）和180度相移单元（2）沿其布置。通过一种方法，选择哪一个有效单元（3,4）处于连接状态，之后分别将控制信号（U1，U2）设置为连接和断开状态（3,4）取决于选择，非相移信号（V1'）或180度相移信号（V2'）从输出（11）发送的结果。根据有源单元（3,4）的功能，信号（V1'，V2'）在其他方面也可能受到相对相位的影响。

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