专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2002065631A1 OSCILLATORS WITH ACTIVE HIGHER-IN-ORDER PHASE SHIFT FILTERING 审中-公开
标题翻译：具有主动高阶相位移位滤波器的振荡器
公开(公告)号：WO2002065631A1
公开(公告)日：2002-08-22
申请号：PCT/SE2001/001426
申请日：2001-06-20
申请人： TELEFONAKTIEBOLAGET LM ERICSSON , FREDRIKSSON, Jesper
发明人： FREDRIKSSON, Jesper
IPC分类号： H03B5/00
CPC分类号： H03K3/2823 , H03B5/1212 , H03B5/1231 , H03B5/1243 , H03B5/24
摘要： The present invention proposes a new way of improving the phase stability and frequency selectivity of a phase shift oscillator (100). By introducing a filter-order enhancing feedback loop (124) in association with a phase shift filter (122) in the oscillator, higher-order phase shift filtering can be achieved without using inductive elements as in conventional higher-order LC phase shift filters. This is a great advantage, since a high Q-value can be obtained without limited by the relatively high internal losses of inductive elements (L).
摘要翻译：本发明提出了改进相移振荡器（100）的相位稳定性和频率选择性的新方式。通过在振荡器中引入与相移滤波器（122）相关联的滤波器阶增强反馈回路（124），可以在不使用常规高阶LC相移滤波器的电感元件的情况下实现高阶相移滤波。这是一个很大的优点，因为可以获得高Q值，而不受电感元件（L）的相对较高的内部损耗的限制。

2. 发明申请

WO2002065632A1 A DIFFERENTIAL OSCILLATOR 审中-公开
标题翻译：差分振荡器
公开(公告)号：WO2002065632A1
公开(公告)日：2002-08-22
申请号：PCT/SE2001/000283
申请日：2001-02-13
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ.) , FREDRIKSSON, Jesper
发明人： FREDRIKSSON, Jesper
IPC分类号： H03B5/00
CPC分类号： H03K3/2823 , H03B5/1212 , H03B5/1231 , H03B5/1243 , H03B5/24
摘要： The invention relates to a new family of differential oscillators based on oscillator amplifiers with local feedback forming respective local feedback systems, and at least one common link interconnecting the local feedback systems. Each branch of the differential oscillator includes an oscillator amplifier with a phase shifting and impedance transforming local feedback path from the output to the input of the amplifier to form a local feedback system. The differential oscillator also includes one or more common phase shifting links for interconnecting and cooperating with the local feedback systems to enable self-sustained differential oscillation. In differential mode operation, the electrical midpoint of the common phase shifting link(s) is virtually grounded and the local feedback systems of the two branches operate, together with the common phase shifting link(s), effectively in anti-phase with respect to each other as two separate oscillators.
摘要翻译：本发明涉及一种基于振荡器放大器的新型差分振荡器系列，其具有形成相应的局部反馈系统的局部反馈以及互连本地反馈系统的至少一个公共链路。差分振荡器的每个分支包括具有从输出到放大器的输入的相移和阻抗变换局部反馈路径的振荡器放大器，以形成局部反馈系统。差分振荡器还包括一个或多个公共移相链路，用于互连并与本地反馈系统协作以实现自持差分振荡。在差分模式操作中，公共移相链路的电中点实际上接地，并且两个分支的局部反馈系统与共同的相移链路一起工作，有效地相对于彼此作为两个独立的振荡器。

3. 发明申请

WO0217489A3 A LOW VOLTAGE VOLTAGE-CONTROLLED OSCILLATOR TOPOLOGY 审中-公开
标题翻译：一种低电压电压控制的振荡器拓扑
公开(公告)号：WO0217489A3
公开(公告)日：2002-06-20
申请号：PCT/CA0101213
申请日：2001-08-24
申请人： SIGE SEMICONDUCTOR INC , ROGERS JOHN WILLIAM MITCHELL , PLETT CALVIN
发明人： ROGERS JOHN WILLIAM MITCHELL , PLETT CALVIN
IPC分类号： H03K3/012 , H03K3/282 , H03K3/354 , H03B5/12
CPC分类号： H03K3/2823 , H03K3/012 , H03K3/354
摘要： Recent trends have seen the desire for lower and lower supply voltages in radio frequency (RF) components as this leads to lower power consumption and, therefore, longer battery life. As well, lower voltages and less current means that mobile products can be made to require fewer battery cells leading to lighter, more compact devices. The present invention discloses a novel topology for providing a low-voltage voltage-controlled oscillator (VCO). The novel topology is based on the negative transconductance oscillator. However, the novel topology of the invention eliminates transistor "stacking" in the oscillator circuit, thereby allowing the oscillator circuit to be operated at a supply voltage only slightly higher than the turn-on voltage for a single transistor.
摘要翻译：最近的趋势已经看到了射频（RF）组件中电源电压越来越低的愿望，因为这导致更低的功耗并因此延长电池寿命。同样，较低的电压和较少的电流意味着移动产品可以被要求更少的电池单元，从而导致更轻，更紧凑的设备。本发明公开了一种用于提供低压压控振荡器（VCO）的新型拓扑结构。新颖的拓扑结构基于负跨导振荡器。然而，本发明的新颖拓扑消除了振荡器电路中的晶体管“堆叠”，由此允许振荡器电路在仅比单个晶体管的导通电压略高的电源电压下工作。

4. 发明申请

WO02017489A2 A LOW VOLTAGE VOLTAGE-CONTROLLED OSCILLATOR TOPOLOGY 审中-公开
标题翻译：低电压控制振荡器拓扑学
公开(公告)号：WO02017489A2
公开(公告)日：2002-02-28
申请号：PCT/CA2001/001213
申请日：2001-08-24
IPC分类号： H03K3/012 , H03K3/282 , H03K3/354 , H03K3/00
CPC分类号： H03K3/2823 , H03K3/012 , H03K3/354
摘要： Recent trends have seen the desire for lower and lower supply voltages in radio frequency (RF) components as this leads to lower power consumption and, therefore, longer battery life. As well, lower voltages and less current means that mobile products can be made to require fewer battery cells leading to lighter, more compact devices. The present invention discloses a novel topology for providing a low-voltage voltage-controlled oscillator (VCO). The novel topology is based on the negative transconductance oscillator. However, the novel topology of the invention eliminates transistor "stacking" in the oscillator circuit, thereby allowing the oscillator circuit to be operated at a supply voltage only slightly higher than the turn-on voltage for a single transistor.
摘要翻译：最近的趋势已经看到对射频（RF）组件中的较低和较低电源电压的需求，因为这导致较低的功耗，因此延长电池寿命。同样，较低的电压和更低的电流意味着移动产品可以被制造成需要更少的电池单元，从而导致更轻，更紧凑的装置。本发明公开了一种用于提供低压压控振荡器（VCO）的新型拓扑。新颖的拓扑结构是基于负跨导振荡器。然而，本发明的新颖拓扑结构消除了振荡器电路中的晶体管“堆叠”，从而允许振荡器电路在仅略高于单个晶体管的导通电压的电源电压下工作。

5. 发明申请

WO2003030350A1 発振器、送信回路及び無線機器审中-公开
标题翻译：振荡器，传输电路和无线电设备
公开(公告)号：WO2003030350A1
公开(公告)日：2003-04-10
申请号：PCT/JP2002/009886
申请日：2002-09-25
申请人：松下電器産業株式会社 , 斉藤典昭 , 清水克人 , 矢吹博幸
发明人：斉藤典昭 , 清水克人 , 矢吹博幸
IPC分类号： H03B5/12
CPC分类号： H03K3/2823 , H03B5/1215 , H03B5/1231 , H03B5/1243 , H03B2200/0078 , H03B2201/0208
摘要： In a cross type oscillator (20) comprising spiral inductors (L1, L2) and resonance capacitors (C1, C2) which decide resonance frequencies, transistors (Q1, Q2) which generate negative resistance by base−collector connection with the common emitter, and a current source (I1) which decides a circuit current value, a double−wave output is extracted from the emitter terminals of the transistors (Q1, Q2).
摘要翻译：在包括确定谐振频率的螺旋电感器（L1，L2）和谐振电容器（C1，C2）的交叉型振荡器（20）中，通过与公共发射极的基极集电器连接产生负电阻的晶体管（Q1，Q2），以及决定电路电流值的电流源（I1），从晶体管（Q1，Q2）的发射极端子提取双波输出。

6. 发明申请

WO9845944A3 EXTENDED FREQUENCY RANGE RELAXATION OSCILLATOR WITH IMPROVED LINEARITY 审中-公开
标题翻译：具有改进线性度的扩展频率范围振荡器
公开(公告)号：WO9845944A3
公开(公告)日：1999-01-07
申请号：PCT/CA9800294
申请日：1998-04-01
申请人： GENNUM CORP , SHAKIBA MOHAMMAD HOSSEIN , HASHJANI TIRDAD SOWLATI
发明人： SHAKIBA MOHAMMAD HOSSEIN , HASHJANI TIRDAD SOWLATI
IPC分类号： H03K3/0231 , H03K3/282
CPC分类号： H03K3/0231 , H03K3/2823
摘要： A relaxation oscillator, such as a voltage controlled oscillator (VCO), with automatic swing control feedback which dynamically monitors the voltage swing across a capacitor and adjusts the oscillator threshold voltage, at which reversal of the polarity of the charging/discharging current occurs, to maintain the effective voltage swing at a constant level. The improved relaxation oscillator provides a very wide linear range of frequency variation versus control voltage (or current) and allows for the extendibility of linear operation to or near the maximum frequency that can be practically achieved by the oscillator circuitry.

7. 发明申请

WO98045944A2 EXTENDED FREQUENCY RANGE RELAXATION OSCILLATOR WITH IMPROVED LINEARITY 审中-公开
标题翻译：具有改进线性度的扩展频率范围振荡器
公开(公告)号：WO98045944A2
公开(公告)日：1998-10-15
申请号：PCT/CA1998/000294
申请日：1998-04-01
IPC分类号： H03K3/0231 , H03K3/282
CPC分类号： H03K3/0231 , H03K3/2823
摘要： A relaxation oscillator, such as a voltage controlled oscillator (VCO), with automatic swing control feedback which dynamically monitors the voltage swing across a capacitor and adjusts the oscillator threshold voltage, at which reversal of the polarity of the charging/discharging current occurs, to maintain the effective voltage swing at a constant level. The improved relaxation oscillator provides a very wide linear range of frequency variation versus control voltage (or current) and allows for the extendibility of linear operation to or near the maximum frequency that can be practically achieved by the oscillator circuitry.
摘要翻译：具有自动摆幅控制反馈的张紧振荡器，例如压控振荡器（VCO），其动态地监测电容器两端的电压摆幅，并调节发生充电/放电电流极性反转的振荡器阈值电压，将有效电压摆幅保持在恒定水平。改进的张弛振荡器提供了非常宽的频率变化的线性范围与控制电压（或电流）的相关性，并允许线性操作在最大频率附近或接近振荡器电路可实际实现的可扩展性。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式