KR20030073657A - Multiple band voltage controlled oscillator - Google Patents

Multiple band voltage controlled oscillator Download PDF

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Publication number
KR20030073657A
KR20030073657A KR1020020013319A KR20020013319A KR20030073657A KR 20030073657 A KR20030073657 A KR 20030073657A KR 1020020013319 A KR1020020013319 A KR 1020020013319A KR 20020013319 A KR20020013319 A KR 20020013319A KR 20030073657 A KR20030073657 A KR 20030073657A
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KR
South Korea
Prior art keywords
capacitor
reactor
controlled oscillator
voltage controlled
varactor diode
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KR1020020013319A
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Korean (ko)
Inventor
이종복
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엘지전자 주식회사
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Priority to KR1020020013319A priority Critical patent/KR20030073657A/en
Publication of KR20030073657A publication Critical patent/KR20030073657A/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
    • H03B5/1243—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2201/00—Aspects of oscillators relating to varying the frequency of the oscillations
    • H03B2201/01—Varying the frequency of the oscillations by manual means
    • H03B2201/018—Varying the frequency of the oscillations by manual means the means being a manual switch

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  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

PURPOSE: A multi-band voltage controlled oscillator is provided to improve the facilitation of frequency tuning by employing a plurality of resonators, each of which operates independently. CONSTITUTION: First and second resonance circuits(100,200) are connected to each other in parallel. A band-switching unit(300) selects one of the first and second resonance circuits(100,200). An oscillation circuit(30) is connected to one of the first and second resonance circuits(100,200) selected by the band-switching unit(300), to thereby oscillate. The first resonance circuit(100) is comprised of a reactor(L2), a varactor diode(VD1), and capacitors(C1,C2). The reactor(L2) and the varactor diode(VD1) are connected in serial. The capacitor(C1) is connected in parallel to the connected reactor(L2) and varactor diode(VD1). The capacitor(C2) is connected in serial to the capacitor(C1). The second resonance circuit(100) is comprised of a reactor(L3), a varactor diode(VD2), and capacitors(C3,C4). The reactor(L3) and the varactor diode(VD2) are connected in serial. The capacitor(C3) is connected in parallel to the connected reactor(L3) and varactor diode(VD2). The capacitor(C4) is connected in serial to the capacitor(C3).

Description

다중 밴드 전압 제어 발진기{MULTIPLE BAND VOLTAGE CONTROLLED OSCILLATOR}MULTIPLE BAND VOLTAGE CONTROLLED OSCILLATOR}

본 발명은 다중 밴드 전압 제어 발진기에 관한 것으로, 특히 광대역 주파수 범위까지 발진할 수 있는 다중 밴드 전압 제어 발진기에 관한 것이다.The present invention relates to a multiband voltage controlled oscillator, and more particularly to a multiband voltage controlled oscillator capable of oscillating up to a wide frequency range.

최근의 통신용 부품의 개발경향은 사이즈의 최소화, 저렴한 비용으로 나아가고 있다. 여기서 필수적인 것은 한가지 부품의 다기능화라 하겠다.Recent trends in the development of communication components have led to minimization of size and low cost. What is essential here is the versatility of one component.

도1은 종래의 듀얼 밴드 전압 제어 발진기의 구성을 보인 회로도로서, 여기서 'Ves'는 하이/로우 밴드 선택 전압이고, VT는 미세 주파수 조정 전압이다.1 is a circuit diagram showing a configuration of a conventional dual band voltage controlled oscillator, where 'Ves' is a high / low band selection voltage, and VT is a fine frequency adjustment voltage.

도1을 참조하면, 두 개의 공진 회로부(10, 20)가 상호 직렬 연결되어 있고, 여기에 발진 회로부(30)가 직렬 접속되어 출력 단자(Fout)를 통해 발진 주파수를 출력하도록 구성되어 있다.Referring to FIG. 1, two resonant circuit parts 10 and 20 are connected in series with each other, and the oscillation circuit part 30 is connected in series to the oscillation frequency and configured to output an oscillation frequency through an output terminal Fout.

그런데, 상기 구성에서 문제가 되는 것은 두 개의 공진 회로부(10, 20)가 서로 직렬 연결되어 있기 때문에, 주파수 발진에 있어서 두 회로가 공진에 서로 영향을 주는 것이다.However, a problem in the above configuration is that since the two resonant circuit parts 10 and 20 are connected in series, the two circuits affect each other in resonance in frequency oscillation.

또한, 두 공진 회로부(10, 20)의 바랙터 다이오드(VD1, VD2)는, 다이오드 특성상 전압에 따라 커패시턴스 값과 변화 범위의 한계를 가지고 있어, 발진 주파수 선택 폭이 크지 않기 때문에, 상기와 같은 회로 구성에 의해서는 다중 밴드 전압 제어 발진기의 구성에 문제점이 있다.In addition, the varactor diodes VD1 and VD2 of the two resonant circuit units 10 and 20 have a capacitance value and a change range limit depending on the voltage due to the characteristics of the diode, and thus the oscillation frequency selection range is not large. According to the configuration, there is a problem in the configuration of the multi-band voltage controlled oscillator.

따라서, 본 발명은 상기와 같은 종래의 문제점을 해결하기 위하여 창출한 것으로, 회로 구성에 큰 변화를 주지 않고도 광대역 주파수 범위까지 발진할 수 있는 다중 밴드 전압 제어 발진기를 제공함에 그 목적이 있다.Accordingly, an object of the present invention is to provide a multi-band voltage controlled oscillator capable of oscillating up to a wide frequency range without large changes in circuit configuration.

이와 같은 목적을 달성하기 위한 본 발명은, 각각 동일하게 구성된 다수 개의 공진 회로부를 병렬 연결하고, 상기 다수 개의 공진 회로부 중 하나를 선택하기 위한 밴드 스위칭부와, 상기 밴드 스위칭부를 통해 선택된 공진 회로부에 의해 발진하는 발진 회로부로 구성한 것을 특징으로 한다.In order to achieve the above object, the present invention provides a plurality of resonant circuit units each configured in the same manner, and a band switching unit for selecting one of the plurality of resonant circuit units, and a resonant circuit unit selected through the band switching unit. It is characterized by consisting of an oscillation circuit portion for oscillation.

또한, 상기 각 공진 회로부는 직렬 연결된 리엑터와 바랙터 다이오드에 커패시터를 병렬 접속하고, 여기에 커패시터를 직렬 접속하여 구성하는 것을 특징으로 한다.In addition, each of the resonant circuits is characterized in that the capacitor is connected in parallel to the reactor and varactor diode connected in series, it is configured by connecting the capacitor in series.

도 1은 종래의 듀얼 밴드 전압 제어 발진기의 구성을 보인 회로도.1 is a circuit diagram showing the configuration of a conventional dual band voltage controlled oscillator.

도 2는 본 발명에 따른 듀얼 밴드 전압 제어 발진기의 구성을 보인 회로도.Figure 2 is a circuit diagram showing the configuration of a dual band voltage controlled oscillator according to the present invention.

*** 도면의 주요 부분에 대한 부호의 설명 ****** Explanation of symbols for the main parts of the drawing ***

100, 200 : 공진 회로부 300 : 밴드 스위칭부100, 200: resonance circuit 300: band switching unit

L1 ~ L3 : 리액터 C1 ~ C4 : 커패시터L1 to L3: Reactor C1 to C4: Capacitor

VD1, VD2 : 바랙터 다이오드VD1, VD2: Varactor Diode

이하, 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

우선, 각 도면의 구성 요소들에 참조부호를 부가함에 있어서, 동일한 구성 요소들에 한해서는 비로 다른 도면상에 표시되더라도 가능한 한 동일한 부호를 가지도록 하고 있음에 유의해야 한다.First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings.

또한, 하기의 설명에서 구체적인 처리흐름과 같은 많은 특정 상세들은 본 발명의 보다 전반적인 이해를 제공하기 위해 나타나 있으며, 이들 특정 상세들 없이 본 발명이 실시될 수 있다는 것은 이 기술분야에서 통상의 지식을 가진 자에게는 자명할 것이다.Also, in the following description, numerous specific details, such as specific processing flows, are set forth in order to provide a more general understanding of the invention, and it is to be understood that the invention may be practiced without these specific details. It will be obvious to them.

그리고, 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 공지 기능 및 구성에 대한 상세한 설명은 생략한다.In addition, detailed description of well-known functions and structures which are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

도2는 본 발명에 따른 듀얼 밴드 전압 제어 발진기의 구성을 보인 회로도로서, 여기서 발진 회로부(30)는 종래와 같은 구성에 의해 동일한 부호를 부가하였으며, VT는 미세 주파수 조정 전압이고, 'Fout'은 발진 주파수 출력 단자이다.Figure 2 is a circuit diagram showing the configuration of a dual band voltage controlled oscillator according to the present invention, wherein the oscillator circuit 30 has the same reference numerals as the conventional configuration, VT is a fine frequency adjustment voltage, 'Fout' is Oscillation frequency output terminal.

도2를 참조하면, 그 구성은 크게 두 개의 공진 회로부(100, 200)를 병렬 연결하고, 상기 두 공진 회로부(100, 200)중 하나를 선택하기 위한 밴드 스위칭부(300)와, 상기 밴드 스위칭부를 통해 선택된 공진 회로부와 접속하여 발진하는 발진 회로부(30)로 구성된다.Referring to FIG. 2, a configuration of the band switching unit 300 and the band switching unit for largely connecting two resonant circuit units 100 and 200 in parallel and selecting one of the two resonant circuit units 100 and 200, and the band switching unit. The oscillation circuit section 30 is configured to oscillate in connection with the resonance circuit section selected through the section.

여기서, 상기 공진 회로부(100)는 직렬 연결된 리엑터(L2)와 바랙터 다이오드(VD1)에 커패시터(C1)를 병렬 접속하고, 여기에 커패시터(C2)를 직렬 접속하여 구성하고, 다른 공진 회로부(200)는 직렬 연결된 리엑터(L3)와 바랙터 다이오드(VD2)에 커패시터(C3)를 병렬 접속하고, 여기에 커패시터(C4)를 직렬 접속하여 구성한다.Here, the resonant circuit unit 100 is configured by connecting the capacitor C1 in parallel to the reactor L2 and the varactor diode VD1 connected in series, and connecting the capacitor C2 in series thereto, and the other resonant circuit unit 200. ) Is configured by connecting the capacitor C3 in parallel to the reactor L3 and the varactor diode VD2 connected in series, and connecting the capacitor C4 in series thereto.

이때, 상기 두 공진 회로부(100, 200)는 밴드 스위칭부(300)에 의해 각각 독립적으로 작동한다.In this case, the two resonant circuit units 100 and 200 operate independently by the band switching unit 300.

따라서, 종래 공진 회로부가 직렬 접속되어 있는 회로와 비교할 때, 하나의 공진 회로에 의해 주파수 발진을 수행하므로, 회로가 간단하여 발진 주파수 튜닝(Tunning)도 간편해질 뿐만 아니라, 바랙터 다이오드(VD1, VD2)의 선택 및 발진 주파수 밴드도 넓어지는 효과가 있다.Therefore, compared with the circuit in which the conventional resonant circuit portion is connected in series, the frequency oscillation is performed by one resonant circuit, so that the circuit is simple and the oscillation frequency tuning is simplified, as well as the varactor diodes VD1 and VD2. ) And the oscillation frequency band are also widened.

또한, 두 개 이상 다수의 독립 공진부를 더 부가하고, 이를 선택할 수 있는 다중 밴드 스위칭부를 결합할 경우, 다중밴드 전압 제어 발진기의 구성도 가능하게 된다.In addition, when two or more independent resonance units are further added, and a multiband switching unit capable of selecting them is combined, a configuration of a multiband voltage controlled oscillator may be possible.

이때, 상기 도2에서 밴드 스위칭부(300)를 제어하기 위한 제어부가 부가되어 있지 않지만, 본 업종에 종사하는 사람의 경우 쉽게 설계가 가능하므로 그에 대한 설명은 생략하기로 한다.At this time, a control unit for controlling the band switching unit 300 is not added in FIG. 2, but a person who is engaged in the present industry can easily design the description thereof.

이상에서 설명한 바와 같이 본 발명 다중 밴드 전압 제어 발진기는, 별도로 동작하는 두 개 이상 다수의 독립 공진부를 더 부가하고, 이를 선택할 수 있는 다중 밴드 스위칭부의 결합에 의해 다중밴드 전압 제어 발진기를 구성할 수 있는 효과가 있다.As described above, the multi-band voltage controlled oscillator of the present invention may further include two or more independent resonators separately operated, and may configure the multi-band voltage controlled oscillator by combining a multi-band switching unit capable of selecting them. It works.

또한, 공진 회로부가 별도로 동작하여 다른 공진 회로부에 영향을 주지 않기 때문에 주파수 튜닝이 용이한 효과가 있다.In addition, since the resonant circuit part operates separately and does not affect other resonant circuit parts, there is an effect that frequency tuning is easy.

Claims (2)

각각 동일하게 구성된 다수 개의 공진 회로부를 병렬 연결하고,Parallel connection of a plurality of resonant circuit units each configured the same, 상기 다수 개의 공진 회로부 중 하나를 선택하기 위한 밴드 스위칭부와,A band switching unit for selecting one of the plurality of resonant circuit units; 상기 밴드 스위칭부를 통해 선택된 공진 회로부에 의해 발진하는 발진 회로부로 구성한 것을 특징으로 하는 다중 밴드 전압 제어 발진기.And an oscillation circuit section oscillating by the resonance circuit section selected by the band switching section. 제1항에 있어서, 상기 각 공진 회로부는 직렬 연결된 리엑터(L1)와 바랙터 다이오드(VD1)에 커패시터(C1)를 병렬 접속하고, 여기에 커패시터(C2)를 직렬 접속하여 구성하는 것을 특징으로 하는 다중 밴드 전압 제어 발진기.The resonator circuit of claim 1, wherein each of the resonant circuits is configured by connecting a capacitor C1 in parallel to a reactor L1 and a varactor diode VD1 connected in series, and connecting a capacitor C2 in series thereto. Multiband voltage controlled oscillator.
KR1020020013319A 2002-03-12 2002-03-12 Multiple band voltage controlled oscillator KR20030073657A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07297640A (en) * 1994-04-28 1995-11-10 Matsushita Electric Ind Co Ltd Frequency switching type oscillator
JPH09294018A (en) * 1996-04-25 1997-11-11 Matsushita Electric Ind Co Ltd High frequency two-band oscillating circuit
JPH11298242A (en) * 1998-04-07 1999-10-29 Matsushita Electric Ind Co Ltd Oscillator and high frequency module using the oscillator
JP2000357917A (en) * 1999-06-17 2000-12-26 Nec Saitama Ltd Antenna-switching device
JP2001237640A (en) * 2000-02-21 2001-08-31 Murata Mfg Co Ltd Voltage controlled oscillator and communication equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07297640A (en) * 1994-04-28 1995-11-10 Matsushita Electric Ind Co Ltd Frequency switching type oscillator
JPH09294018A (en) * 1996-04-25 1997-11-11 Matsushita Electric Ind Co Ltd High frequency two-band oscillating circuit
JPH11298242A (en) * 1998-04-07 1999-10-29 Matsushita Electric Ind Co Ltd Oscillator and high frequency module using the oscillator
JP2000357917A (en) * 1999-06-17 2000-12-26 Nec Saitama Ltd Antenna-switching device
JP2001237640A (en) * 2000-02-21 2001-08-31 Murata Mfg Co Ltd Voltage controlled oscillator and communication equipment

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