본 논문에서는 2.4GHz 대역에서의 응용을 위한 광대역 RF 모들을 설계하고 제작하였다. 무선 주파 신호를 중간 주파수로 변환하기 위한 RF 모듈은 3단 증폭기로 이루어진 저잡음 증폭기(LNA), 단종단 게이트 믹서, 정합 회로, 헤어핀 라인 대역 통과 필터, 쳬비셰프 저역 통과 필터로 구성하였다. 저잡음 증폭기는 높은 이득과 안정도를 갖도록 설계하였으며, 단종단 게이트 믹서는 높은 변환이득과 넓은 동작 영역을 갖도록 설계하였다. 광대역 RF모듈의 해석에서는 복합화된 하모닉 밸런스드 기법을 사용하여 RF모듈의 동작 특성을 해석하였다. 설계된 RF 모듈은 55.2dB의 변환이득, 1.54dB의 낮은 잡음 특성, $-120{\sim}-60dBm$의 넓은 RF전력 동작 영역, -60dBm의 낮은 고조파 성분 그리고 RF, IF, LO포트 간에 우수한 분리 특성을 갖는다.
본 논문에서는 2.4GHz 대역에서의 응용을 위한 광대역 RF 모들을 설계하고 제작하였다. 무선 주파 신호를 중간 주파수로 변환하기 위한 RF 모듈은 3단 증폭기로 이루어진 저잡음 증폭기(LNA), 단종단 게이트 믹서, 정합 회로, 헤어핀 라인 대역 통과 필터, 쳬비셰프 저역 통과 필터로 구성하였다. 저잡음 증폭기는 높은 이득과 안정도를 갖도록 설계하였으며, 단종단 게이트 믹서는 높은 변환이득과 넓은 동작 영역을 갖도록 설계하였다. 광대역 RF모듈의 해석에서는 복합화된 하모닉 밸런스드 기법을 사용하여 RF모듈의 동작 특성을 해석하였다. 설계된 RF 모듈은 55.2dB의 변환이득, 1.54dB의 낮은 잡음 특성, $-120{\sim}-60dBm$의 넓은 RF전력 동작 영역, -60dBm의 낮은 고조파 성분 그리고 RF, IF, LO포트 간에 우수한 분리 특성을 갖는다.
In this paper, a broadband RF module is designed and tested for 2.4GHz band applications. The RF module is composed of a low noise amplifier (LNA) with a three stage amplifier, a single ended gate mixer, matching circuits, a hairpin line band pass filter and a Chebyshev low pass filter to convert th...
In this paper, a broadband RF module is designed and tested for 2.4GHz band applications. The RF module is composed of a low noise amplifier (LNA) with a three stage amplifier, a single ended gate mixer, matching circuits, a hairpin line band pass filter and a Chebyshev low pass filter to convert the radio frequency (RF) into the intermediate frequency (IF). The LNA has a high gain and stability, and the single ended gate mixer has a high conversion gain and wide dynamic range. In the analysis of the broadband RF module, the composite harmonic balance technique is used to analyze the operating characteristics of an RF module circuit. The RF module has a 55.2dB conversion gain with a 1.54dB low noise figure, $-120{\sim}-60dBm$ wide RF power dynamic range, -60dBm low harmonic spectrum and a good isolation factor among the RF, IF, and local oscillator (LO) ports.
In this paper, a broadband RF module is designed and tested for 2.4GHz band applications. The RF module is composed of a low noise amplifier (LNA) with a three stage amplifier, a single ended gate mixer, matching circuits, a hairpin line band pass filter and a Chebyshev low pass filter to convert the radio frequency (RF) into the intermediate frequency (IF). The LNA has a high gain and stability, and the single ended gate mixer has a high conversion gain and wide dynamic range. In the analysis of the broadband RF module, the composite harmonic balance technique is used to analyze the operating characteristics of an RF module circuit. The RF module has a 55.2dB conversion gain with a 1.54dB low noise figure, $-120{\sim}-60dBm$ wide RF power dynamic range, -60dBm low harmonic spectrum and a good isolation factor among the RF, IF, and local oscillator (LO) ports.
* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.
문제 정의
This paper presents a composite technique for designing the broadband RF module. In addition, the designing procedures of the broadband LNA and the single ended gate mixer with an excellent performance are briefly described.
제안 방법
Even though the MMIC transistor has a slightly high noise figure, it is used as the 3rd stage amplifier since the total noise figure of the LNA is basically determined by the noise figure of the 1st and 2nd stage of the LNA. In order to improve the noise figure and voltage standing wave ratio(VSWR) of the LNA, we carefully select the points of reflection coefficient to achieve an optimum noise figure, a low VSWR, and a high power gain of the amplifier, simultaneously.
After the feedback, the centers of the noise figure circles and power gain circles are concentrated in the specific area and located in the unconditionally stable region. Therefore, it allowed us to locate the amplifier design point, at the concentrated area of circles, and to find the reflection coefficient of the transistor to be matched to that of the input and output ports using the matching circuit. The source series feedback circuit is constructed between the source port of the transistor(EPA060B-70) and the conducting ground, as shown in [Fig.
대상 데이터
1] shows the LNA circuit design with the 3 stage amplifier. It consists of input and output matching circuits, the 1st, 2nd and 3rd stage transistors, two source series feedback circuits, and two inter stage matching circuits between the transistors. The input/output matching circuits are used to match the LNA to the input and output ports, and the source series feedback circuits are used to make the transistor stable.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.