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    OSCILLATOR CIRCUIT DIE ON CERAMIC SUBSTRATE
    11.
    发明申请
    OSCILLATOR CIRCUIT DIE ON CERAMIC SUBSTRATE 审中-公开
    陶瓷基板上的振荡器电路

    公开(公告)号：WO1993003540A1

    公开(公告)日：1993-02-18

    申请号：PCT/US1992004782

    申请日：1992-06-08

    Applicant: MOTOROLA, INC.

    Inventor： MOTOROLA, INC. ,  BLACK, Gregory, R. ,  HIETALA, Alexander, W. ,  AGAHI-KESHEH, Darioush

    IPC: H03B05/12

    CPC classification number: H03B5/1231 ,  H03B5/04 ,  H03B5/1209 ,  H03B5/1243 ,  H03B2200/002 ,  H03B2200/0022 ,  H03B2200/0034 ,  H03B2200/0036 ,  H03B2200/0062 ,  H03B2200/0098 ,  H03B2201/0208

    Abstract: A voltage controlled oscillator and buffer amplifier circuit (211) is disclosed. The circuit is in a stacked configuration, whereby, the current from the power supply (361) is used by the buffer amplifier circuit and reused by the VCO circuit. The VCO circuit includes two transistors (333, 325). The transistors are set-up in a mirrored configuration, so that one of the transistors (325) controls the bias current in the other transistor (333). Both of the transistors are integrated into a semiconductor circuit die (365), thus matching the thermal characteristics of the transistors (333, 325) and improving control of the bias current. The die (365) is bonded to a ceramic substrate (601). The substrate (601) has connectivity paths for connecting components in the circuit die to components external to the circuit die. Some of the connectivity paths are made of a material and length to form passive circuit elements.

    AN OSCILLATOR
    12.
    发明申请
    AN OSCILLATOR 审中-公开
    振荡器

    公开(公告)号：WO1998027643A2

    公开(公告)日：1998-06-25

    申请号：PCT/SE1997002099

    申请日：1997-12-15

    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON ,  BLADH, Mats

    Inventor： TELEFONAKTIEBOLAGET LM ERICSSON

    IPC: H03B05/12

    CPC classification number: H03B5/24 ,  H03B2201/0208 ,  H03B2201/0258

    Abstract: In a differential oscillator means (535, 553, 521, 523, 549 and 551) are provided for making it possible to band switch the oscillator. This is obtained by means of cross connecting two transistors (501 and 503) and connecting inductors (509 and 511) to the transistors (501 and 503). The oscillator can be band switched by means of shortening a circuit comprising of two diodes (521 and 523). The switching time for the oscillator is very short since the oscillating circuit does not comprise any serially connected capacitors. In addition all frequency bands of the oscillator can be made impedance matched by means of adding an additional pair of varactor diodes (529 and 531).

    Abstract translation: 在差分振荡器装置（535,553,521,523,549和551）中提供了使得能够对振荡器进行频带切换的可能性。 这是通过将两个晶体管（501和503）和连接电感器（509和511）交叉连接到晶体管（501和503）而获得的。 振荡器可以通过缩短包括两个二极管（521和523）的电路进行带通切换。 振荡器的切换时间非常短，因为振荡电路不包括任何串联的电容器。 此外，通过增加一对变容二极管（529和531）可以使振荡器的所有频带阻抗匹配。

    FREQUENCY DOUBLING OSCILLATOR AND MIXER CIRCUIT
    13.
    发明申请
    FREQUENCY DOUBLING OSCILLATOR AND MIXER CIRCUIT 审中-公开
    频率双振荡器和混频器电路

    公开(公告)号：WO1987002842A1

    公开(公告)日：1987-05-07

    申请号：PCT/GB1986000647

    申请日：1986-10-21

    Applicant: PLESSEY OVERSEAS LIMITED ,  COWLEY, Nicholas, Paul ,  LAWTON, Rodney, James ,  McCLELLAND, Thomas, David, Stephen

    Inventor： PLESSEY OVERSEAS LIMITED

    IPC: H03B05/12

    CPC classification number: H03D7/1433 ,  H03B5/1218 ,  H03B5/1231 ,  H03B19/14 ,  H03B2200/0098 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1475

    Abstract: An oscillator (figure 2) of balanced design in which a resonant impedance network (R) is connected between the control ports (b) of two matched transistors (T1, T2), and a capacitance (C) is connected in parallel, across the two inputs (e) of these transistors. The inputs (e) of the transistors (T1, T2) are connected each to a matched current source (S1, S2). The signals at the transistor outputs are summed together at a common node (N). Signals of resonant frequency (fR) in each arm or the oscillator are equal in magnitude but opposite in phase. Signals at resonant frequency (fR) thus cancel whereas signals at the second harmonic frequency (2fR) add constructively and are thus enhanced. The effect is a net frequency doubling. For high frequency operation, bipolar transistors (T1, T2) are utilised. The current sources (S1, S2) can be modulated and an IF mixer output derived. Signal of resonant frequency can be extracted and used for signal prescaling. In an equivalent arrangement, an inductance (L) and resonant network (R) replace the resonant network (R) and capacitance (C) just mentioned.

    Abstract translation: 在两个匹配晶体管（T1，T2）的控制端口（b）和电容（C）之间连接有谐振阻抗网络（R）的平衡设计的振荡器（图2）并联连接 这些晶体管的两个输入（e）。 晶体管（T1，T2）的输入（e）分别连接到匹配的电流源（S1，S2）。 在公共节点（N）将晶体管输出端的信号相加在一起。 每个臂或振荡器中的谐振频率（fR）的信号幅度相等但相位相反。 谐振频率（fR）的信号因此消除，而二次谐波频率（2fR）的信号被建设性地增加并因此被增强。 效果是净倍频。 对于高频操作，利用双极晶体管（T1，T2）。 可以对电流源（S1，S2）进行调制，并得到IF混频器输出。 可以提取谐振频率信号，用于信号预分频。 在等效布置中，电感（L）和谐振网络（R）代替刚刚提到的谐振网络（R）和电容（C）。

    Tuning circuit for at least two frequency ranges
    15.
    发明公开
    Tuning circuit for at least two frequency ranges 失效
    调谐电路至少两个频率范围

    公开(公告)号：EP0129154A3

    公开(公告)日：1986-04-16

    申请号：EP84106501

    申请日：1984-06-07

    Applicant: TELEFUNKEN electronic GmbH

    Inventor： Heigl, Franz ,  Rehm, Josef

    IPC: H03J05/24 ,  H03B05/12

    CPC classification number: H03J5/244 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243 ,  H03B2200/004 ,  H03B2200/0048 ,  H03B2200/0052 ,  H03B2200/0056 ,  H03B2201/0208 ,  H03D7/12

    Abstract: Bei einem Tuner für die Bereiche UHF und VHF ist für den hohen Frequenzbereich eine selbstschwingende Mischstufe vorgesehen, während für den oder die niedrigeren Frequenz bereiche eine davon getrennte fremdgesteuerte Mischstufe verwendet wird. Um den Schaltungsaufbau zu vereinfachen und eine erhöhte Ausnutzung der notwendigen Schaltungs mittel zu erreichen, wird die selbstschwingende Mischstufe bei Betrieb im niedrigeren Frequenzbereich als Oszillator umgeschaltet. Hierzu wird in einen für den UHF-Bereich vor gesehenen Schwingkreis 7 mit Hilfe eines ersten Schalters 23 eine zusätzliche Induktivität 13, 14, 15 eingeschaltet, die die Resonanzfrequenz entsprechend erniedrigt. Außerdem wird über wenigstens eine zusätzliche Rückkoppelleitung 26, 30 und einen darin vorgesehenen Schalter 27, 31 für den bzw. die niedrigeren Frequenzbereiche eine zusätzliche Rückkopplung geschaffen, die den Oszillator sicher schwingen läßt.

    Abstract translation: 在UHF和VHF范围的调谐器中，为高频范围提供自振荡混频器级，而在较低的频率范围或范围内使用单独的外部受控的混频器级。 为了更有效地简化电路和使用必要的电路组件，自振荡混频器级被切换以用作在较低频率范围内操作的振荡器。 为此，附加电感13,14,15通过开关23切换到用于UHF范围的谐振电路7，并将谐振频率降低所需量。 另外，通过设置在回路中的至少一个额外的反馈回路26,30和开关27,31，对于较低频率范围或范围获得额外的反馈，使振荡器可靠地振荡。

    DIGITAL TRANSDUCER SYSTEM
    17.
    发明申请
    DIGITAL TRANSDUCER SYSTEM 审中-公开
    数字传感器系统

    公开(公告)号：WO1993024992A1

    公开(公告)日：1993-12-09

    申请号：PCT/US1993004777

    申请日：1993-05-17

    Applicant: TAVIS CORPORATION

    Inventor： TAVIS CORPORATION ,  TAVIS, John, R. ,  NICHOLSON, Laurence, R.

    IPC: H03B05/12

    CPC classification number: G01L1/14 ,  G01D3/0365 ,  G01D5/2208 ,  G01D18/008 ,  G01L9/105 ,  H02P25/032 ,  H03L5/02

    Abstract: A variable reluctance transducer system incorporating digital control of parallel resonant circuits (L1C1, L2C1) including two inductive sensors (L1, L2) on each side of a flat diaphragm. The two parallel resonant circuits provide dual frequency signals for digital calculation to obtain a quotient of the frequencies, thereby substantially eliminating the resonant frequencies as a variable in the accuracy of the device. Manipulation of the produced quotient by a microcontroller (10) employing digital calibration tables stored in a programmable read only memory (14) allows calibration responsive to a temperature sensor (16), thereby substantially eliminating temperature induced error in the system.

    TEMPERATURE STABLE OSCILLATOR
    18.
    发明申请
    TEMPERATURE STABLE OSCILLATOR 审中-公开
    温度稳定的振荡器

    公开(公告)号：WO1990002444A1

    公开(公告)日：1990-03-08

    申请号：PCT/US1989003529

    申请日：1989-08-17

    Applicant: SETRA SYSTEMS, INC.

    Inventor： SETRA SYSTEMS, INC. ,  BRIEFER, Dennis, K.

    IPC: H03B05/12

    CPC classification number: H03L1/02 ,  H03B5/04 ,  H03B5/1203 ,  H03B5/1231 ,  H03B2200/0034 ,  H03B2200/0048 ,  H03B2200/0056

    Abstract: An oscillator (10) including a first frequency control network (12) having a series coupled inductance (L1) and sensor capacitor (CS1), a pair of cascaded capacitors (C1 and C2), and an emitter follower amplifier (18) coupled thereto. The emitter follower amplifier (18) drives a current limiter (20) and a feedback path (22), whereby the current through the emitter follower amplifier (18) is divided between the current limiter (20) and the feedback path (22) in a manner establishing an oscillatory potential in the oscillator (10), while keeping the transistor (Q1) of the emitter follower amplifier (18) substantially out of its saturation state.

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