نتایج جستجو برای: diode amplifier
تعداد نتایج: 41267 فیلتر نتایج به سال:
This work has as main objective the integration of planar Gunn diodes and high electron mobility transistors (HEMTs) on the same chip for the realisation of high-power oscillators in the millimeter-wave regime. By integrating the two devices, we can reinforce the high frequency oscillations generated by the diode using a transistor-based amplifier. The integration of the planar Gunn diode and t...
A sub-harmonic mixer for the 220-325GHz band was developed using a SiC platform first time. An anti-parallel Fermi-level managed barrier diode pair monolithically integrated with waveguide couplers and filters on an epi-layer transferred substrate. The chip assembled in waveguide-input package broadband transimpedance amplifier. lowest obtained noise equivalent power as low 5×10-19W/Hz signal f...
We present a C-band 6-mode 7-core fiber amplifier in an all-fiberized cladding-pumped configuration for space division multiplexed transmission supporting record 42 spatial channels. With optimized components (e.g. passively cooled pump laser diode, coupler, stripper), high power multimode light is coupled to the active without any noticeable thermal degradation and average gain of 18 dB noise ...
This paper details the design, realisation and measured performance of a set of MMICs for broadband receiver applications. Five different MMICs are described: A 0.5 to 20GHz dual channel limiter, a 2 to 18GHz dual channel Low Noise Amplifier (LNA), a DC to 20GHz dual channel Single Pole Double Throw (SPDT) switch, a 2 to 18GHz upconverter and a companion downconverter. The MMICs can be used to ...
By seeding stretched pulses from a femtosecond Yb fiber oscillator into a cryogenically cooled DPSS regenerative amplifier based on a novel Na-co-doped Yb:CaF2 laser crystal, we obtain >3-mJ pulses at a 1-kHz repetition rate with a spectral bandwidth exceeding 12 nm. The pulses are compressed with a single grating compressor to 173 fs as verified by SHG FROG. Shaping of the spectral amplitude o...
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