公开(公告)号：US5587690A

公开(公告)日：1996-12-24

申请号：US509663

申请日：1995-07-31

Applicant: Hiroyuki Yabuki ,  Morikazu Sagawa ,  Mitsuo Makimoto

Inventor： Hiroyuki Yabuki ,  Morikazu Sagawa ,  Mitsuo Makimoto

IPC: H01P7/08 ,  H03B1/00 ,  H03B5/18 ,  H03B7/12 ,  H03B7/14 ,  H03D7/16 ,  H03L7/099 ,  H03L7/10 ,  H30L7/099

CPC classification number: H01P7/088 ,  H03B5/1852 ,  H03B7/12 ,  H03L7/099 ,  H03B2200/0016 ,  H03B2200/0034 ,  H03B2200/0048 ,  H03B2201/0208 ,  H03B2201/0225 ,  H03B7/14 ,  H03D7/161 ,  H03L7/10

Abstract: A first oscillator includes: a ring resonator; an oscillation circuit having a negative resistance active circuit coupled to a first point on the ring resonator for oscillating at an oscillation frequency and resonating the resonator; an output terminal, coupled to a second point on the ring resonator where a voltage is substantially zero with respect to the predetermined frequency when the ring resonator resonates, for outputting a resonant frequency signal, wherein even order harmonic components are outputted with the fundamental component suppressed. A second oscillator includes a ring resonator having points A to D equidistantly dividing the ring resonator, first and second oscillation circuits coupled to the points A and B respectively, first and second grounding capacitors having capacitance equivalent to those of the first and second oscillation circuits. Thus, two independent oscillators which do not affect each other are provided with a single resonator. In the first and second oscillators, grounding capacitors, a resonant capacitor may be provided to miniaturize the oscillator. Variable capacitances may be provided to prevent the point from moving with a change in the controlled oscillation frequency. Frequency synthesizers and communication apparatus including the first or second oscillator are also disclosed.

Abstract translation: 第一振荡器包括：环形谐振器; 振荡电路，其具有耦合到所述环形谐振器上的第一点的负电阻有源电路，以振荡频率振荡并谐振谐振器; 输出端子，耦合到环形谐振器上的第二点，其中当环形谐振器谐振时相对于预定频率的电压基本上为零，用于输出谐振频率信号，其中偶数次谐波分量被抑制成基本分量 。 第二振荡器包括环形谐振器，其具有等距分割环形谐振器的点A至D，分别耦合到点A和B的第一和第二振荡电路，第一和第二接地电容器具有与第一和第二振荡电路相同的电容。 因此，没有彼此影响的两个独立振荡器设置有单个谐振器。 在第一和第二振荡器中，可以提供接地电容器，谐振电容器以使振荡器小型化。 可以提供可变电容以防止点随着受控振荡频率的变化而移动。 还公开了包括第一或第二振荡器的频率合成器和通信装置。

公开(公告)号：US5532651A

公开(公告)日：1996-07-02

申请号：US417557

申请日：1995-04-06

Applicant: Rene I. Jager ,  Peter Vizmuller ,  Mathias M. Gimpelj

Inventor： Rene I. Jager ,  Peter Vizmuller ,  Mathias M. Gimpelj

IPC: H01P7/08 ,  H03B1/00 ,  H03B5/18 ,  H03C3/22 ,  H03J3/20

CPC classification number: H01P7/082 ,  H01P7/088 ,  H03B5/1852 ,  H03J3/20 ,  H03B2200/0008 ,  H03B2200/0022 ,  H03B2200/0034 ,  H03B2201/014 ,  H03B2201/0208 ,  H03B2201/0225 ,  H03C3/22

Abstract: An oscillator (100) includes a resonator (218) having a mirco-strip (217). The micro-strip (217) couples an inductive component (221) to a capacitive portion (219). To tune the oscillator (100), a number of cuts are made on the pad (221) in order to restrict the signal flow. The width of these cuts determine the degree of restriction posed on the signal flow. This controllable restriction of the signal flow provides the circuit (100) with enhanced tunability.

Abstract translation: 振荡器（100）包括具有微带（217）的谐振器（218）。 微带（217）将电感元件（221）耦合到电容部分（219）。 为了调谐振荡器（100），在焊盘（221）上进行多个切割以限制信号流。 这些切口的宽度决定了对信号流的限制程度。 对信号流的这种可控限制为电路（100）提供了增强的可调性。

公开(公告)号：US5157357A

公开(公告)日：1992-10-20

申请号：US735952

申请日：1991-07-25

Applicant: Takayuki Katoh

Inventor： Takayuki Katoh

IPC: H01L21/822 ,  H01L27/04 ,  H01L29/93 ,  H03B1/00 ,  H03B5/12 ,  H03B5/18 ,  H03C3/22 ,  H03F3/60

CPC classification number: H03B5/1852 ,  H03B2200/0028 ,  H03B2200/004 ,  H03B2200/0062 ,  H03B2201/011 ,  H03B2201/0208 ,  H03B2201/0225 ,  H03C2200/005 ,  H03C3/22

Abstract: A monolithic microwave IC oscillator includes a feedback amplifier having a field effect transistor and a varactor diode. The varactor diode has a junction capacitance that varies according to the bias voltage applied to said diode and capacitively couples the amplifier to an external load. Any variation of the capacitance of the load-coupling capacitor caused by design errors or by variations in the manufacturing process can be easily corrected when the device is used. As a consequence, the oscillator can always be operated with good oscillaitng characteristics without hindering integration of individual components and without increasing costs.