Now showing items 1-10 of 13
Wideband Distributed Amplifier Using Encapsulated HEMTs
A two stage microwave hybrid integrated distributed amplifier with a gain of 7 ± 1 dB and a noise figure better than 5.2 dB in the 0.2–11 GHz band and better than 3 dB in the 7.5–11 GHz subband is reported. The amplifier ...
Microwave Characterization of High-Speed pin Photodiodes
Optical responsivity and electrical reflection of an ultra high-speed pin photodiode (PD) are measured in 20 GHz frequency range. The effect of PD bias voltage variation was investigated at different incident optical power ...
Interference Sensitivity of Digital Receivers in Fiber-Radio Distribution Networks
Fiber-radio distribution networks have been investigated by several authors recently. In such networks wideband access of several subscribers is provided with the advantage of easy installation and reduced maintenance costs ...
Broadband Low Noise Optical Receiver Utilizing Distributed Amplification
A new approach for the design and construction of low noise broadband optical receivers is presented utilizing distributed amplification based on hybrid integrated technology. Using extremely low noise PHEMTs as well as ...
The effect of parasitic inductances in distributed amplifiers
The gain-bandwidth relations of distributed amplifiers (DA) are analyzed. It is shown that the amplifier performance is uniquely related to the properties of the active elements and the electrical length of the transmission ...
Microwave Distributed Amplifier in Hybrid Integrated Technology
In the paper the gain-bandwidth relations of microwave distributed amplifiers are analyzed. It is shown that in case of proper realization corresponding to distributed amplifier (DA) requirements the amplifier gain and ...
Gain and Noise Optimization of an Optical Receiver Utilizing a Distributed Amplifier
In wideband optical communications the bandwidth and the noise of optical receivers are crucial problems. The application of a distributed amplifier instead of a transimpedance amplifier in an optical receiver has the ...
New Topology for Distributed Amplifiers in Hybrid Integrated Technology
In this paper alternative circuit topologies for hybrid integrated distributed amplifiers (DA) are analyzed and compared. Improvement in the gain-bandwidth product and decrease in the gain ripple using the proposed new ...
Investigation of Direct Modulated Laser Diodes
Characterisation of direct modulated laser diodes has an important role in the design of microwave fiber optic links. Modulation bandwidth and electrical reflection was measured in GHz frequency range and applied for bias ...
New optomixer surpassing photodetection at microwaves
The properties of a new optomixing method are investigated and compared to the performance of the photodetection. This new method offers significantly higher output signal level compared to the direct photodetection.