Abstract:
A radar transceiver module includes an RF circuit unit including an RF substrate and RF components; and a DC power circuit unit including a PCB substrate and DC power circuit components. The RF circuit unit and the DC power circuit unit are arranged to make the rear surfaces of the RF circuit unit and the DC power circuit to face each other and assembled to have partitioned spaces by using at least one blocking wall.
Abstract:
According to the present invention, a digital attenuator includes a first switching element connected between an RF input terminal and an RF output terminal, a first resistive element connected in parallel to the RF input terminal, a second resistive element connected in parallel to the RF output terminal and in series to the first resistive element, a third resistive element connected in parallel between the second resistive element and the first resistive element, a first capacitive element connected to a ground and in series to the second switching element, and a fourth resistive element connected to a positive power source and in parallel to the second switching element.
Abstract:
PURPOSE: A compensation bias circuit for compensating the variation of a threshold voltage, a temperature, and power and an amplifier using the same are provided to supply a compensated bias by connecting a transistor in parallel to a source terminal of an active bias transistor. CONSTITUTION: A compensation bias circuit includes an active gate bias unit, a first transistor(310) and a second transistor(320). The active gate bias unit drives an amplifier(110). The first transistor is connected in parallel to a source terminal of an active gate bias unit. The first transistor is connected to a first feedback resistor(311). The second transistor is connected between the source terminal of the active gate bias unit and the power supply terminal. The second transistor is connected to a second feedback resistor(321).
Abstract:
A vertical transition substrate having compensation capacitor and method for manufacturing the same are provided to improve the characteristic of insertion loss and return loss by setting the pad connected to the ground plane of vertical signal via. The pad(301) is formed in the dielectric layer of the lower position corresponding to the vertical signal via. The vertical ground vias(302) electrically connects the ground plane with pad. The substrate is formed with the low temperature co-fired ceramic substrate. The second dielectric layer formed on the pad is laminated on the first dielectric layer having the ground plane. The third dielectric layer of the first conductive pattern is laminated to on the second dielectric layer. The second conductive pattern and fourth dielectric layer are formed on the upper part of the third dielectric layer.
Abstract:
A packaged IC(Integrated Circuit) switch carrier apparatus using a coplanar wire-bond interconnection and a method thereof are provided to acquire a high isolation characteristic of an IC switch by connecting input/output terminals of the IC switch based on a coplanar wire-bond interconnection. A first signal pad(210) is located on input/output terminals of an IC switch and connects a signal. A first ground pad(209) is located on the input/output terminals of the IC switch and grounds the IC switch. A second signal pad(206) is located on input/output terminals of an IC switch carrier apparatus and connects a signal. A second ground pad(204) is located on the input/output terminals of the IC switch carrier apparatus and grounds the IC switch carrier apparatus. A connection unit connects the first signal pad(210) to the second signal pad(206), and connects the first ground pad(209) to the second ground pad(204). A ground unit grounds the second ground pad(204).
Abstract:
A frequency multiplier with a series resonant reflector is provided to improve the output power and to reduce the size, by reflecting a signal regardless of high and low frequency with the series resonant reflector. In a frequency multiplier with a series resonant reflector(250), electric sources(200,210) provide the electric power to a frequency multiplying unit(240). An input DC blocking unit(220) removes the DC(Direct Current) component of signal having an inputted reference frequency component. An input matching unit(230) matches a signal having the reference frequency component. The frequency multiplying unit(240) receives the signal having the reference frequency component matched at the input matching unit(230), outputs the signal having reference frequency component and a signal having the harmonic component and amplifies the output by using the signal having the reference frequency component reflected from the series resonant reflector(250). The series resonant reflector(250) reflects the signal having the reference frequency component outputted from the frequency multiplying unit(240) with the frequency multiplying unit(240). An output matching unit(260) selects a signal having a predetermined first multiplying component among the signal having the harmonics component outputted from the frequency multiplying unit(240). An output DC blocking unit(270) removes the DC component of signal having a predetermined component selected at the output matching unit(260).
Abstract:
1. 청구범위에 기재된 발명이 속한 기술분야 본 발명은 전력 증폭을 위한 전치왜곡형 선형화 장치 및 그 방법에 관한 것임. 2. 발명이 해결하려고 하는 기술적 과제 본 발명은 입력신호의 크기에 따른 전력증폭기의 이득 왜곡(AM-AM)과 위상 왜곡(AM-PM)을 보상함으로써, 전력 증폭기의 선형성을 증가시키기 위한 전력 증폭을 위한 전치왜곡형 선형화 장치 및 그 방법을 제공하는데 그 목적이 있음. 3. 발명의 해결방법의 요지 본 발명은, 전력 증폭을 위한 전치왜곡형 선형화 장치에 있어서, 위상 및 이득 변환시 발생하는 삽입손실을 보상하기 위하여, 입력전력을 증가시키기 위한 증폭수단; 선형화 대상 장치의 위상변화 추이에 따라 선택적으로 바이어스 조건을 결정하여, 상기 증폭수단에서 증폭된 입력전력의 증가에 따라 위상을 증감시키기 위한 위상변환수단; 및 상기 위상변환수단에서 입력전력의 증가에 따라 감소되는 이득을 증가시키기 위한 이득변환수단을 포함한다. 4. 발명의 중요한 용도 본 발명은 전력 증폭기 등에 이용됨. 전치왜곡, 선형화, 이득 왜곡(AM-AM), 위상 왜곡(AM-PM)
Abstract:
본발명은증폭기의선형성을개선하기위하여증폭기단별게이트전압을다르게인가하는바이어스회로를통하여증폭기의선형성을개선하여높은출력전력에서높은품질의신호를출력해줄수 있으며, 바이어스회로가집적회로내에내장이가능하여추가적인외부전원회로가필요치않아소형증폭기모듈에효과적으로적용될수 있는, 질화갈륨집적회로를통한신호증폭기에관한것이다.