Circuit configuration for direct modulation

    公开(公告)号:US06983131B2

    公开(公告)日:2006-01-03

    申请号:US10164551

    申请日:2002-06-07

    申请人: Werner Veit

    发明人: Werner Veit

    IPC分类号: H04B1/04

    CPC分类号: H03D7/166

    摘要: A circuit configuration for direction modulation contains an oscillator, whose output signal is split into quadrature components for modulation with a useful signal. A frequency shifting circuit has the effect that that the output frequency and the frequency of the oscillator are fractional rational multiples with respect to one another. The circuit contains a phase shifter for generating first further quadrature components and also a divider for generating second further quadrature components. The quadrature components are mixed with one another. As a result of the frequency offset, the oscillation frequency of the oscillator is shifted to outside the useful frequency band. Remodulation effects do not influence the adjacent channels. The circuit can be realized simply and cost-effectively and, in particular, requires only one oscillator.

    Cephalosporin intermediate products
    3.
    发明授权
    Cephalosporin intermediate products 失效
    头孢菌素中间产物

    公开(公告)号:US5585485A

    公开(公告)日:1996-12-17

    申请号:US471915

    申请日:1995-06-06

    CPC分类号: C07D277/587 C07D417/12

    摘要: A cephalosporin intermediate of the formula ##STR1## where R.sub.3 is carboxyl, carboxylate, or a carboxylic acid ester group and,R.sub.8 and R.sub.9 are each independently hydrogen, halogen,(C.sub.1-4) alkyl, hydroxy, carboxamido,(C.sub.1-4) alkoxycarbonyl, amino,mono- (C.sub.1-4) alkylamino, di- (C.sub.1-4) alkylamino, ortogether are a 5 or 6-membered carbocyclic ring or an alkali metal, alkaline earth metal, or acid addition salt thereof. Valuable cephalosporin antibiotics can be produced from the cephalosporin intermediate products of formula I.

    摘要翻译: 其中R 3是羧基,羧酸酯或羧酸酯基团,且R 8和R 9各自独立地是氢,卤素,(C 1-4)烷基,羟基,甲酰氨基,(C 1 -C 4)烷基, C 1-4烷氧基羰基,氨基,单(C 1-4)烷基氨基,二 - (C 1-4)烷基氨基或一起为5或6元碳环或碱金属,碱土金属或酸加成盐 其中。 有价值的头孢菌素抗生素可由式I的头孢菌素中间产物生产。

    Modulator circuit configuration
    4.
    发明授权
    Modulator circuit configuration 有权
    调制器电路配置

    公开(公告)号:US06369666B1

    公开(公告)日:2002-04-09

    申请号:US09718895

    申请日:2000-11-22

    IPC分类号: H03C300

    CPC分类号: H03C3/40

    摘要: The circuit for combined operation of a mobile radio with GMSK and 8-PSK modulation includes a transmission PLL for GMSK operation, and a direct modulator for 8-PSK operation. A transmission oscillator in the transmission PLL is also used as a synthesizer oscillator for the direct modulator. The modulation in the transmission PLL is suppressed for this purpose. The circuit allows cost-effective implementation while retaining the advantages of a transmission PLL.

    摘要翻译: 用于GMSK和8-PSK调制的移动无线电的组合操作电路包括用于GMSK操作的传输PLL和用于8-PSK操作的直接调制器。 传输PLL中的传输振荡器也被用作直接调制器的合成器振荡器。 为此,抑制了传输PLL中的调制。 该电路允许经济有效的实现,同时保留传输PLL的优点。

    Circut configuration for generating a reference current
    5.
    发明授权
    Circut configuration for generating a reference current 失效
    用于产生参考电流的循环配置

    公开(公告)号:US5663674A

    公开(公告)日:1997-09-02

    申请号:US551267

    申请日:1995-05-11

    IPC分类号: G05F3/26 G05F3/02

    CPC分类号: G05F3/265

    摘要: An integrated circuit configuration for generating a reference current by bipolar technology includes a transistor of one conduction type having a control terminal being acted upon by a reference voltage and having a load path. An externally connectable resistor is to be connected between the load path of the transistor and a reference potential. A current mirror configuration has an input side connected between the load path of the transistor and a supply voltage source and has an output for picking up a reference current.

    摘要翻译: 用于通过双极技术产生参考电流的集成电路配置包括具有一个控制端子的一种导电类型的晶体管,该控制端子被参考电压作用并具有负载路径。 外部可连接的电阻器连接在晶体管的负载路径和参考电位之间。 电流镜配置具有连接在晶体管的负载路径和电源电压源之间的输入侧,并且具有用于拾取参考电流的输出。

    Method for producing 1-naphthol-4-sulphonic acid
    7.
    发明授权
    Method for producing 1-naphthol-4-sulphonic acid 失效
    1-萘酚-4-磺酸的制备方法

    公开(公告)号:US4540525A

    公开(公告)日:1985-09-10

    申请号:US645942

    申请日:1984-08-30

    申请人: Werner Veit

    发明人: Werner Veit

    IPC分类号: C07C309/43 C07C143/42

    CPC分类号: C07C309/00

    摘要: Disclosed is a method for producing 1-naphthol-4-sulphonic acid in free acid form and contaminated with less than 2% by weight of the isomeric 1-naphthol-2-sulphonic acid.

    摘要翻译: 公开了一种以游离酸形式生产并被小于2重量%的异构1-萘酚-2-磺酸污染的1-萘酚-4-磺酸的方法。

    Purification process
    8.
    发明授权
    Purification process 失效
    净化过程

    公开(公告)号:US06835829B2

    公开(公告)日:2004-12-28

    申请号:US10348569

    申请日:2003-01-21

    IPC分类号: C07D50122

    CPC分类号: C07D501/00

    摘要: Processes for the depletion of 7-ADCA in mixtures of vinyl-ACA with 7-ADCA via novel salts of vinyl-ACA or via chromatography.

    摘要翻译: 乙烯基ACA与7-ADCA的混合物中通过乙烯基-ACA或通过色谱法的新型盐消耗7-ADCA的方法。

    Purification process
    10.
    发明授权
    Purification process 失效
    净化过程

    公开(公告)号:US06313289B1

    公开(公告)日:2001-11-06

    申请号:US09341542

    申请日:1999-08-04

    IPC分类号: C07D50104

    CPC分类号: C07D501/00

    摘要: Crystalline 2-(amninothiazol-4-yl)-2-(tert.butoxycarbonylmethoxyimino)acetic acid-S-mercapto-benzo-thiazolylester in form of an N,N-dimethylacetamide solvate; a crystalline salt of a 7-[2-(aminothiazol-4-yl)-2-(carboxymethoxyimino)acetamido]-3-vinyl-3-cephem-4-carboxylic acid with an amine of formula N(R1)(R2)(R3), wherein R1, R2, and R3 have various meanings, a crystalline sulphuric acid addition salt of a 7-[2-(2-aminothiazol-4-yl)-2-carboxymethoxyimino)acetamido]-3-vinyl-3-cephem-4-carboxylic acid; and the use of these salts in the production of cefixime, e.g. in form of a trihydrate.

    摘要翻译: N,N-二甲基乙酰胺溶剂化物形式的2-(氨基噻唑-4-基)-2-(叔丁氧基羰基甲氧基亚氨基)乙酸S-巯基 - 苯并噻唑酯的结晶; 7- [2-(氨基噻唑-4-基)-2-(羧基甲氧基亚氨基)乙酰氨基] -3-乙烯基-3-头孢烯-4-羧酸与式N(R1)(R2)的胺的结晶盐, (R3),其中R1,R2和R3具有各种含义,7- [2-(2-氨基噻唑-4-基)-2-羧甲氧基亚氨基)乙酰氨基] -3-乙烯基-3 - 头孢-4-羧酸; 以及这些盐在头孢克肟的生产中的用途。 呈三水合物的形式。