公开(公告)号：EP1092264A4

公开(公告)日：2002-11-13

申请号：EP99920309

申请日：1999-05-04

Applicant: VARI L CO

Inventor： POPE MATTHEW D

IPC: H03B1/00 ,  H03B5/12 ,  H03B5/18

CPC classification number: H03B5/1231 ,  H03B5/1203 ,  H03B5/1243 ,  H03B5/1262 ,  H03B2201/0208 ,  H03B2201/0258

Abstract: An electronic oscillator of the Colpitts type with an amplifying element (A) and a tank circuit (T). The tank circuit (T) includes a parallel tuned resonant circuit (PT), a series tuned resonant circuit (ST) and a switching circuit (SW) that selectively connects one of the resonant circuits (PT, ST) to the tank circuit (T). The oscillator operates at a first frequency in the parallel tuned mode and a second frequency that is substantially twice the first frequency in the series tuned mode.

Abstract translation: 具有放大元件（A）和槽路（T）的Colpitts型电子振荡器。 谐振电路（T）包括并联谐振电路（PT），串联谐振电路（ST）和选择性地将谐振电路（PT，ST）之一连接到谐振电路（T）的开关电路 ）。 振荡器在并行调谐模式下以第一频率工作，而在串联调谐模式下工作在基本上为第一频率两倍的第二频率。

公开(公告)号：AU5108999A

公开(公告)日：2000-02-07

申请号：AU5108999

申请日：1999-07-15

Applicant: VARI L CO

Inventor： POPE MATTHEW D

IPC: H03B1/00 ,  H03B5/12 ,  H03L5/00

Abstract: An oscillator having a tank circuit, an amplifier circuit and a switching circuit. The switching circuit switches the oscillator between a normal power consumption mode and a lower power consumption mode. The amplifier circuit includes an emitter biased transistor. The switching circuit switches between power consumption modes by switching between two selected voltages at the base of the transistor. When in the lower power consumption mode, the oscillator has sufficient current to sustain oscillation but insufficient current to meet the phase noise requirements for good fidelity and high data rates. When in the normal power consumption mode, the oscillator has sufficient current to meet the phase noise requirements for good

公开(公告)号：AU3784499A

公开(公告)日：1999-11-23

申请号：AU3784499

申请日：1999-05-04

Applicant: VARI L CO

Inventor： POPE MATTHEW D ,  GUDEWICZ JEFFREY T

IPC: H03B5/02 ,  H03B1/00 ,  H03B1/04 ,  H03B5/12 ,  H03B5/18

Abstract: An oscillator having two oscillation circuits with widely different frequencies with a common passive switched output circuit. Each oscillator circuit includes a transmission line inductive impedance between the oscillator output and ground. The inductive impedances are selected to be open at the operating frequency of the associated oscillator circuit and a short or a low impedance at the frequency of the other oscillator circuit. Each inductive impedance forms a portion of an impedance matching pad for the other oscillator circuit.

公开(公告)号：AU3783699A

公开(公告)日：1999-11-23

申请号：AU3783699

申请日：1999-05-04

Applicant: VARI L CO

Inventor： POPE MATTHEW D

IPC: H03B1/00 ,  H03B5/12

Abstract: An electronic oscillator of the Colpitts type with an amplifying element and a tank circuit. The tank circuit includes a parallel tuned resonant circuit, a series tuned resonant circuit and a switching circuit that selectively connects one of the resonant circuits to the tank circuit. The oscillator operates at a first frequency in the parallel tuned mode and a second frequency that is substantially twice the first frequency in the series tuned mode.