KR900007914B1 - Variable matching pad of wide band voltage variable osilator - Google Patents

Variable matching pad of wide band voltage variable osilator Download PDF

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Publication number
KR900007914B1
KR900007914B1 KR1019880006078A KR880006078A KR900007914B1 KR 900007914 B1 KR900007914 B1 KR 900007914B1 KR 1019880006078 A KR1019880006078 A KR 1019880006078A KR 880006078 A KR880006078 A KR 880006078A KR 900007914 B1 KR900007914 B1 KR 900007914B1
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oscillator
variable
voltage
matching pad
voltage variable
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KR1019880006078A
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Korean (ko)
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KR890017860A (en
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조명태
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삼성전기 주식회사
서주인
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    • 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

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

Abstract

The matching pad (1) for uniformly symmetrizing the frequency level uniformly, connected between a voltage variable oscillator (2) and oscillator load (4). The matching pad comprises a first tank part (11) connected to the output of the oscillator (2), a second tank part (12) connected to the oscillator load (4), and a third tank part (13) connected between a node of the first and second tanks (11)(12) and a varactor voltage end (VT) of the oscillator. The third tank includes a varactor diode (D1) for mutually frequency-responding to a varactor voltage of the oscillator.

Description

광대역 전압가변발진기의 가변매칭패드(Matching pad)Variable Matching Pads for Wideband Voltage Variable Oscillators

제1도는 일반적인 발진기 사용상태의 개략도.1 is a schematic diagram of a general oscillator using state.

제2도는 본 발명에 의한 실시예 회로도.2 is an exemplary circuit diagram according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 가변매칭패드 11,12,13 : 제1-제3탱크부1: Variable matching pads 11, 12, 13: 1st-3rd tank part

Dq: 바랙터다이오드D q : Varactor diode

본 발명은 비교적 광범위한 대역의 주파수를 취급할 수 있는 전압가변의 발진기가 발진기 부하측에 연결될 때 그 발진주파수 레벨이 발진기부하측에서 원하는 일정레벨로 자동유지될 수 있도록 한 가변매칭패드에 관한 것이다.The present invention relates to a variable matching pad that enables the oscillation frequency level to be automatically maintained at a desired constant level at the oscillator load side when a voltage variable oscillator capable of handling a relatively wide band of frequencies is connected to the oscillator load side.

전압가변발진기는 주로 바랙터다이오드를 이용하여 전압에 의한 발진주파수를 제어하는 형태를 취하고 있다.The voltage variable oscillator mainly takes the form of controlling the oscillation frequency by voltage using varactor diodes.

그리고 이러한 전압가변발진기는 제도와 같이 발진기부하측(4)에 연결될 때 그 발진주파수가 특정된 하나의 주파수거나 또는 좁은 대역의 주파수일때는 리액터(L), 캐페시터(C), 저항(R)을 이용한 회로의 고정매칭패드(3)를 상기 전압가변발진기(2)와 발진기부하(4)측 사이에 마련하여 소정레벨의 주파수 매칭을 일정하게 이룰수 있다.When the oscillation frequency is connected to the oscillator load side 4 as shown in the drawing, when the oscillation frequency is a specific frequency or a narrow band frequency, a reactor (L), a capacitor (C), and a resistor (R) are used. A fixed matching pad 3 of the circuit can be provided between the voltage variable oscillator 2 and the oscillator load 4 side to achieve a predetermined level of frequency matching.

그러나, 비교적 주파수가 광범위한 범위로 되고 각개 주파수의 레벨이 일정하게 요구될때는 상기와 같은 고정매칭패트(3)을 사용할 수 없으므로 이로인한 문제점이 있었다.However, there is a problem in that the fixed matching pad 3 cannot be used when the frequency is in a wide range and the level of each frequency is constantly required.

이것은 각개 주파수에 따라 그 매칭피트의 허용동작 값이 서로 다르게 주어지므로서 그 고정된 값으로는 이에 용이대처하기 어렵기 때문이다. 그러므로, 종래의 상기와 같은 기술에서는 그것이 고정매칭패드를 이용하므로서 광대역 전압가변발진기와 발진기 부하회로와의 이용범위에 그 제약이 뒤따르면서 용도에의 한정성때문에 바람직한 것으로 기대하기 어렵다.This is because the allowable operation values of the matching feet are given differently according to the respective frequencies, and thus the fixed values are difficult to deal with. Therefore, in the conventional technique as described above, it is difficult to expect it to be preferable because of its limitation in use, with its restriction on the range of use of the wideband voltage variable oscillator and the oscillator load circuit by using a fixed matching pad.

본 발명은 종래의 상기와 같은 문제점을 개선코져 개발된 것으로서, 이는 상기 전압가변발진기가 광대역전압가변 발진기로 되고 이 발진기와 그 부하측 사이에 사용되어지는 가변매칭패드를 제공코져 한 것이다.SUMMARY OF THE INVENTION The present invention has been developed to improve the above-mentioned problems, which is to provide a variable matching pad which is used between the oscillator and its load side, wherein the voltage variable oscillator is a broadband voltage variable oscillator.

이하에서 이를 좀더 상세히 설명하면 다음과 같다.This will be described in more detail below.

제2도는 본 발명의 가변매칭패드(1)가 전압가변발진기(2)와 발진기 부하(4)측 사이에 구비되어진 구성을 나타내고 있다.2 shows a configuration in which the variable matching pad 1 of the present invention is provided between the voltage variable oscillator 2 and the oscillator load 4 side.

상기 가변매칭패드(1)는 발진기(2) 출력측으로부터 이어지는 제1탱크부(11)와 이 가변매칭패드(1)의 출력측인 발진기부하(4)로 이어지는 재2탱크부(12)가 상호 직결되어지고, 이들사이와 발진기(2)의 바랙터전압단(VT)과의 사이에는 제3탱크부(13)가 연결되어진다. 또, 상기 제1탱크부(11) 및 제2탱크부(12)는 직렬공진회로로서 광대역 주파수의 결합회로 구성되며 여기서의 저항(R1, R2)은 각기 원하는 Q값을 설정을 위한 Q감쇄용 저항으로 된다. 또, 상기 제3탱크부(13)는 발진기(2)측의 부하임피던스 매칭을 위해 바랙터다이오드(D1)에 의한 전압가변병렬 공진회로로 구성된다.The variable matching pad 1 is directly connected to the first tank portion 11 extending from the output side of the oscillator 2 and the second tank portion 12 leading to the oscillator load 4 which is the output side of the variable matching pad 1. The third tank 13 is connected between them and the varactor voltage terminal V T of the oscillator 2. In addition, the first tank portion 11 and the second tank portion 12 is a series resonant circuit is composed of a combination circuit of a wideband frequency, where the resistance (R 1 , R 2 ) is a Q for setting the desired Q value, respectively It becomes a damping resistor. In addition, the third tank 13 is composed of a voltage variable parallel resonant circuit by the varactor diode D 1 for matching the load impedance of the oscillator 2 side.

이러한 구성의 본 발명은 광대역주파수의 전압가변발진기(2)에선 이 전압가변발진기(2)측의 바랙터다이오드로 소정대역의 주파수에 대한 전압이 바랙터전압단(VT)으로 외부회로에서 가해진다.In the present invention having the above-described configuration, the voltage variable oscillator 2 having a wideband frequency is a varactor diode on the side of the voltage variable oscillator 2, and a voltage for a frequency of a predetermined band is applied from an external circuit to the varactor voltage terminal V T. All.

이에 의해 전압가변발진기(2)측에서 소정대역주파수가 출력되고 이는 가변매칭패드(1)의 제1탱크부(11) 및 제2탱크부(12)를 거쳐 발진기부하(4)측으로 전달된다.As a result, a predetermined band frequency is output from the voltage variable oscillator 2 side, which is transmitted to the oscillator load 4 side through the first tank part 11 and the second tank part 12 of the variable matching pad 1.

이때, 상기 제1,2탱크부(11,12)는 모두 광대역 커플링회로이므로 상기 발진기(2)측에서의 광대역주파수를 모두 걸러내게되는 것이다. 그리고, 저항(R1,R2)값을 크게하여 Q값을 작게하므로서 비교적 넓은 영역의 주파수 탱크회로로서 작용케 되어진다.At this time, since the first and second tank parts 11 and 12 are all broadband coupling circuits, all the broadband frequencies at the oscillator 2 side are filtered out. Then, the resistances R 1 and R 2 are increased to decrease the Q value, thereby acting as a frequency tank circuit in a relatively wide range.

또, 상기 전압가변발진기(2)측의 설정된 주파수범위는 그 가변선택시 제3탱크부(13)의 바랙터다이오드(D1)를 응동시키므로 그 가변전압의 발진주파수와 일치케 되어진다.In addition, the set frequency range on the side of the voltage variable oscillator 2 causes the varactor diode D 1 of the third tank unit 13 to be oscillated at the time of the variable selection so as to coincide with the oscillation frequency of the variable voltage.

그리고, 그 대응성 조절은 캐패시터(C1)로 조절할 수 있고, 제각기의 발진주파수에서 그 임피던스가 이론적으로 무한대로 주어지므로 실제적으론 큰 임피던스가 부여되어 발진기(2)에 대한 높은 임피던스가 공급되는 것이다.In addition, the correspondence control can be controlled by the capacitor C 1 , and since the impedance is theoretically given at infinity at each oscillation frequency, a large impedance is actually applied to supply a high impedance to the oscillator 2. .

그러므로 본 발명에선 발진기부하측에 가해지는 발진주파수 레벨이 항상 일정하게 가변매칭되어질 수 있게 된다.Therefore, in the present invention, the oscillation frequency level applied to the oscillator load side can always be constantly variable matching.

이러한 본 발명은 광대역주파수 전압가변발진기와 발진기부하측사이에 가변매칭이 가능토록되는 가변매칭패드를 구비 하므로서 이러한 회로의 이용가치을 현저히 상승시킨 유익한 특징이 있는 것이다.The present invention has a beneficial feature that significantly increases the useful value of such a circuit by having a variable matching pad that allows variable matching between the wideband frequency variable voltage oscillator and the oscillator load side.

Claims (1)

전압가변발진기(2)와 발진기부하(4)사이에 주파수레벨의 일정 대칭을 위한 매칭패드를 둔것에 있어서, 상기 매칭패드는 전압가변발진기(2)의 바랙터 전압과 상호 주파수 응동하는 또다른 바랙터다이오드를 포함한 탱크부를 두고, 이 탱크부에는 전압가변발진기(2)출력측의 광대역 탱크부와 발진기부하(4)측의 광대역 탱크부와 공통 연결한 가변매칭패드(1)의 구성으로 됨을 특징으로 하는 광대역 전압가변 발진기의 가변매칭패드.In placing a matching pad for constant symmetry of the frequency level between the voltage variable oscillator 2 and the oscillator load 4, the matching pad is another bar that mutually oscillates with the varactor voltage of the voltage variable oscillator 2; A tank portion including a raptor diode is provided, and the tank portion has a configuration of a variable matching pad (1) connected in common with a broadband tank portion on the output side of the voltage variable oscillator (2) and a broadband tank portion on the oscillator load (4) side. Variable matching pads for wideband voltage variable oscillators.
KR1019880006078A 1988-05-24 1988-05-24 Variable matching pad of wide band voltage variable osilator KR900007914B1 (en)

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KR900007914B1 true KR900007914B1 (en) 1990-10-23

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