KR970031274A - Tuner USING DUAL-GATE MOSFET - Google Patents

Tuner USING DUAL-GATE MOSFET Download PDF

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Publication number
KR970031274A
KR970031274A KR1019950040330A KR19950040330A KR970031274A KR 970031274 A KR970031274 A KR 970031274A KR 1019950040330 A KR1019950040330 A KR 1019950040330A KR 19950040330 A KR19950040330 A KR 19950040330A KR 970031274 A KR970031274 A KR 970031274A
Authority
KR
South Korea
Prior art keywords
dual
gate mosfet
signal
tuner
gate
Prior art date
Application number
KR1019950040330A
Other languages
Korean (ko)
Other versions
KR0178196B1 (en
Inventor
심상규
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950040330A priority Critical patent/KR0178196B1/en
Publication of KR970031274A publication Critical patent/KR970031274A/en
Application granted granted Critical
Publication of KR0178196B1 publication Critical patent/KR0178196B1/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
    • H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter

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  • Amplifiers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

본 발명은 듀얼게이트 모스페트(DUAL-GATE MOSFET)를 이용한 튜너에 관한 것으로, 안테나를 통한 RF신호가 RF앰프를 통해 소정크기로 증폭되어 입력 임피던스가 매칭된 다음, 듀얼게이트 모스페트의 제 1 게이트로 제공되고, LO 로부터 발생되는 극초단파의 DC 성분이 C4를 통해 차단되어 듀얼게이트 모스페트의 제 2 게이트로 제공되며, 듀얼게이트 모스페트를 통해 두 신호가 믹싱된 다음 IF 매칭부를 통해 출력 임피던스가 매칭되어 IF 신호가 출력되므로써, RF 신호와 극초단파가 서로 절연되어 듀얼게이트 모스페트로 제공되므로, 두 신호간의 간섭을 방지할 수 있고, 듀얼게이트 모스페트의 동작점의 변화가 작기 때문에 DC 바이어스 변화에 덜 민감하며, 듀얼게이트 모스페트 자제특성상 크로스 모듈레이션과 인터모듈레이션 특성이 우수하여 보다 안정된 IF 신호를 출력할 수 있도록 한 것이다.The present invention relates to a tuner using a dual-gate MOSFET, wherein an RF signal through an antenna is amplified to a predetermined size through an RF amplifier to match an input impedance, and then a first gate of the dual-gate MOSFET. And the DC component of the microwave generated from the LO is cut off via C4 to the second gate of the dual gate MOSFET, the two signals are mixed through the dual gate MOSFET, and then the output impedance is matched through the IF matcher. And the IF signal is output, the RF signal and the microwave are insulated from each other and provided to the dual gate MOSFET, which prevents interference between the two signals and is less sensitive to changes in the DC bias due to the small change in the operating point of the dual gate MOSFET. Also, more stable IF due to excellent cross-modulation and intermodulation characteristics due to dual gate MOSFET control. It will have to output the arc.

Description

듀얼게이트-모스페트(DUAL-GATE MOSFET)를 이용한 튜너(TUNER USING DUAL-GATE MOSFET)Tuner USING DUAL-GATE MOSFET

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명의 바람직한 실시예에 따른 듀얼게이트 모스페트를 이용한 튜너의 개략적인 블럭구성도.2 is a schematic block diagram of a tuner using dual gate MOSFET according to a preferred embodiment of the present invention.

제3도는 듀얼게이트 모스페트를 설명하기 위한 도면.3 is a diagram for explaining a dual gate MOSFET.

Claims (1)

안테나를 통해 포착되는 소망하는 채널의 RF 신호를 소정크기로 증폭하는 RF 증폭수단(110)과, 소정주파수를 갖는 극초단파를 발진하는 발진수단(140)과, 상기 RF 증폭수단(110)에서 소정크기로 증폭된 RF 신호와 상기 발진수단(140)으로부터의 극초단파를 믹싱한 다음 IF 신호를 출력하는 믹스수단(150)으로 구성되는 튜너에 있어서, 상기 믹스수단(150)은, 듀얼게이트 모스페트(156)로 구성된 것을 특징으로 하는 듀얼게이트 모스페트(DUAL-GATE MOSFET)를 이용한 튜너.RF amplification means (110) for amplifying the RF signal of the desired channel captured by the antenna to a predetermined size, oscillation means (140) for oscillating microwaves having a predetermined frequency, and a predetermined size in the RF amplification means (110) In the tuner comprising a mixing means 150 for mixing the RF signal amplified by the microwave and the microwave from the oscillating means 140 and then outputs an IF signal, the mixing means 150, the dual gate MOSFET 156 Tuner using dual-gate MOSFET (DUAL-GATE MOSFET). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950040330A 1995-11-08 1995-11-08 Tuner with Dual Gate MOSFET KR0178196B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950040330A KR0178196B1 (en) 1995-11-08 1995-11-08 Tuner with Dual Gate MOSFET

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950040330A KR0178196B1 (en) 1995-11-08 1995-11-08 Tuner with Dual Gate MOSFET

Publications (2)

Publication Number Publication Date
KR970031274A true KR970031274A (en) 1997-06-26
KR0178196B1 KR0178196B1 (en) 1999-04-01

Family

ID=19433433

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950040330A KR0178196B1 (en) 1995-11-08 1995-11-08 Tuner with Dual Gate MOSFET

Country Status (1)

Country Link
KR (1) KR0178196B1 (en)

Also Published As

Publication number Publication date
KR0178196B1 (en) 1999-04-01

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