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  • Advanced Analog Products SLOA031 IMPORTANT NOTICE Texas Inst | Datasheets.org.uk
    This process continues until charge builds operational range (VSUPPLY VSUPPLY) charge tripler , (VSUPPLY VSUPPLY) charge doubler . charge from CVCP then used drive DMOS output transistor gates. value must large enough supply charge required DMOS gate capacitance, small enough fully charge within one... proper capacitance recommended device data sheets evaluation module user guides. values required these capacitors relatively small readily available surface - mount ceramic chips . capacitors must relatively stable over expected operating temperature. Good quality X7R, ±10% ceramic capacitors should used with voltage ratings greater than maximum voltage charge pump...
  • CASIMIR: a submillimeter heterodyne spectrometer for SOFIA
    These FM's will use planar MMIC doubler and tripler chips mounted in waveguide blocks, and will multiply the frequency of the MWS by a factor of from 4 to 12, in order to provide the LO signal at 0.5—2 THz. ...cryostat wall to a mylar beamsplitter directly below the receiver elliptical mirror on the cold work surface . ...unit developed by contract to CTT Inc.,'6 containing a low—noise amplifier, a voltage —variable attenuator, band—defining...
  • Frequency multipliers for millimeter and submillimeter wavelengths
    ...efficiency and input impedance at a given operating point (input power and bias voltage ) with a given... ...common structure used in frequency multipliers at millimeter waves is a crossed-waveguide mount of the type... ...waveguide to a low-pass filter and via it further to the diode chip , which is soldered... One of the diodes on the surface of the chip is contacted by a thin wire (whisker... Triplers and other higher-order multipliers are more complex because those should be provided with the optimum... In the case of a doubler for 80-100 GHz output, the peak efficiency obtained is as...
  • A MMIC-based 75-110 GHz signal source
    The output of the doubler is filtered with a custom designed hairpin-style bandpass filter. The next chip is a variable-gain amplifier that is used to level the power output of... This is sufficient to drive the frequency tripler [3] and W-Band power amplifier 141described earlier. Fig. 2. kequencycomponentsbelow the lineare mounted in a smallcavity insidethe splitblock. ...compensate the natural downward slope of the diode's responsivity so that the detected voltage is relatively independent... Unlike more common end- launch connectors, this geometry maintains a planar top- surface of the block so...
  • Solid state 448GHz frequency doubler using intergrated schottky membrane technology
    ...voltage junction capacitance Cj0=10.8 fF, series resistence Rs=11 �?, bias voltage Vbias=-4.5... Fig.5 shows the estimated efficiency of the doubler , and we can find that both the input... The chip is mounted in an half E-plane split block. ...Lampin, T. Akalin, K. Blary, A. Degiron, P. Crozat, and F. Meng, "THz surface plasmon modes on... ...Lee, H. Javadi, G. Chattopadhyay, and I. Mehdi, “In-Phase Power- Combined Frequency Triplers at 300 GHz...
  • A W-band active frequency-multiplier-by-six in waveguide package
    The DC supplies use off- chip 120 pF single- layer capacitors and 10 nF surface - mounted device ceramic capacitors for RF decoupling. The supply voltages are routed via feed-throughs from the DC supply board situated at the backside... ...Eggebert, H. Massler, M. Schlechtweg, G. Weimann, “A 150 to 220 GHz balanced doubler MMIC using a... [6] M. Danesh, F. Gruson, P. Abele, H. Schumacher, “Differential VCO and Frequency Tripler using SiGe HBTs...
  • New Solid State Devices and Circuits for Millimeter Wave Applications
    From a doubler using a parallel configuration of two diodes, 25 mW ofoutput power at 160 GHz... Adding a tripler about 2 mW at 480 GHz (41) was obtained. Several laboratories have developed whiskerless diodes intended to be surface mounted in planar structures (45-49). A technique for thinning down these diode ships and transferring the chip to a quartz substrate has... It was found that the capaci- tance variation obtained when the pump voltage modulated the width ofthe...
  • Micromachined submillimeter-wave frequency multipliers
    In the first, micromachining methods were employed to fabricate an integrated 270-810GHz frequency tripler . In the second approach, a specially designed Schottky diode chip incorporating the stripline filter/bias circuit is mounted in a micromachined, waveguide circuit block to form a 135-270GHz frequency doubler . A further etching process removes surface oxides from the GaAs through the anode vias. ...programmable current source was used to provide the pulsed plating current and the voltage across the electrodes...
  • A 200-285-GHz waveguide SIS mixer with an inhomogeneous distributed junction array
    The layout of the mixer chip is shown in Fig. 4. ...layer was deposited on the whole wafer by RF sputtering to prevent the surface of the top... ...signalthrough a 50- m-thick Mylar film and was guided to the mixer mount cooled to 4... A doubler with a Gunn oscillator at 77–117 GHz and a tripler with Gunn oscillators at 86–90 and 88–96 GHz were used as LO sources and dc bias was supplied to the mixer through a bias tee. Measured dc current– voltage characteristics (solid lines) of the inhomogeneous distributed junction array with and without an...
  • Home
    ...team was able to recover intelligible speech from the vibrations of a potato- chip bag photographed from... Sandia's Copperhead — a highly modified MiniSAR system mounted on unmanned aerial vehicles (UAVs) — has been... ...Testing (HALT) process subjects test articles to accelerated combined environments of thermal, dynamic, voltage , and current to... Test vehicles were built using advanced electronic package designs using the surface mount technology process. New GaN fabrication process has been applied to the design fabrication and tests of frequency doublers and triplers .
  • Home
    ...team was able to recover intelligible speech from the vibrations of a potato- chip bag photographed from... Sandia's Copperhead — a highly modified MiniSAR system mounted on unmanned aerial vehicles (UAVs) — has been... ...Testing (HALT) process subjects test articles to accelerated combined environments of thermal, dynamic, voltage , and current to... Test vehicles were built using advanced electronic package designs using the surface mount technology process. New GaN fabrication process has been applied to the design fabrication and tests of frequency doublers and triplers .
  • Integrated terahertz transmitters and receivers
    ...a number of simplifying assumptions and to “talk�? in terms of discrete devices and voltages and currents. In this case a broadband frequency tripler is used to reduce the required frequency range to about... In the case of the discrete diode chip shown in Fig. 2, the diodes are typically flip-chip mounted into the circuit with either solder or conductive epoxy. The metal anodes are about 0.2 microns where they contact the GaAs surface which is located... Fig. 2: An SEM image of a planar balanced doubler chip before dicing from the GaAs wafer.
  • Terahertz sources and detectors
    ...a number of simplifying assumptions and to “talk�? in terms of discrete devices and voltages and currents. In this case a broadband frequency tripler is used to reduce the required frequency range to about... In the case of the discrete diode chip shown in Fig. 2, the diodes are typically flip-chip mounted into the circuit with either solder or conductive epoxy. The metal anodes are about 0.2 microns where they contact the GaAs surface which is located... Fig. 2: An SEM image of a planar balanced doubler chip before dicing from the GaAs wafer.
  • Author Index
    High efficiency MMIC frequency triplers for millimeter and submillimeter wavelengths; MWSYM 00 1003-1006 vol.2 Escalera... High output power, broadband 28-56 GHz MMIC frequency doubler ; MWSYM 00 1589-1591 vol.3 Falkingham... 0.4-8 GHz broadband MMICs in novel RF chip size package for optical video distribution system... A 1.9 GHz low voltage CMOS power amplifier for medium power RF applications; RFIC 00 121... Interpolating wavelet scheme toward global modeling of microwave circuits; MWSYM 00 375-378 vol.1 Godshalk, E.M. Characterization of surface mount packages at microwave frequencies using wafer probes; MWSYM 00 1887-1890 vol.3 Gokdemir, T., see Ashtiani, A.E., RFIC...
  • Subject Index
    ...MTT Jan 00 121-125 HBT microwave power amps., digitally-controlled power supply voltage , efficiency and lin. ...F.X., + , MWSYM 00 35-38 vol.1 high-power MM-wave planar doublers using Schottky varactor... Virdee, A.S., + , MWSYM 00 1329-1332 vol.3 NRD-guide surface - mounted on planar substr. for hybrid IC, low-loss MM-wave propag. characts. Sakura, N., + , MWSYM 00 1715-1718 vol.3 AlGaN/GaN HEMT, microwave power amp., flip- chip mounting. Ashtiani, A.E., + , RFIC 00 187-190 GaAs-InGaP HBT MM-wave broadband monolithic freq. tripler .