Description
RF and MW devices: -Design Satellite broadcast X-Band Down-Converters (DNC) ,for Low Noise Block (LNB) at Ku band (10.7 GHz to 12.75 GHz) satellite receiver system. Ku Band Universal Single (US) LNB, including pre-amplifier, mixer, buffer amplifier and PLL synthesizer, and the LO frequency (9.75GHz or 10.6GHz) -Design VSAT Outdoor unit Up converter to Ka-band in the 29.5-30 GHz frequency band, convert 70MHz IF to 29.5-30 GHz Output Interface Waveguide ,Input N-Type. Linear Gain 65dB. Tx input frequency 950- 1450MHz. Consists in an LO input frequency of 5.7 GHz doubled twice up to 22.8 GHz, then mixed with IF frequency band (6.7 GHz- 7.2 GHz), resulting in signal operating in the 29.5 GHz to 30 GHz frequency range. Power amplifier 8W. RF passive components design (simualtion ADS, HFSS. ACAD. Integration in PCB, Altium). Power divider (from Low Pow. To 1.0KW). BPF Microstrip, BPF WG. Directional couplers. Experience of design RF systems -SDR transciever design. Bands 430MHz-4.0GHz. Integrated in one PCB. Receiver module-LNA, BPF,1mixer,IF1 BPF,Buffer amplifier, BPFIF1, 2in 65mixer, LPF, VGA, ADC, DSP microcontroller. Synthethazer mudule. Low phase nose (<-110dBc,10KHz), 300MHz-4.5GHz, Two channels (Rx,Tx). Transmitter module. DAC, buf.amp.,mixer-modulator, BPF, Amp1, Power Amplifier 10W, Tx,Rx Pin diodes switch. - 300W power amplifier, 3.5GHz band, Pamp pulse modulator for radar application (simulation. Schematic design, PCB design) - X-band 10W power amplifier micromodule (crystall xp1006, ultrasonic assembling) - X-band multichannel amplifier and phase modulator, Pin=0.5dBm, Pout=33dBm - Transciever 2.9-3.5GHz including receiver module (antenna switch,LNA, BPF,mixer, IF amplifier, IFBPF, synthesizer, microcontroller ), transmitter module (IF BPF, If amplifier, mixer, RF BPF, Power amplifier +40 dBm). Simulation, Schematic design, PCB design. RF CHARACTERISATION As RF designer engineer my job including characterizes the DC and RF performance integrated circuits such as power amplifiers ,LNA, Mixers, PLL. General measuremenents: RF characterizes: -Small signal gain S21,S12
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