In this paper the design and a complete characterization of an InP/InGaAs single heterojunction bipolar (SHBT) mm-wave amplifier is described. The circuit is designed for the 60 GHz band allocated for wireless LAN and mobile communications. The amplifier achieves a gain of 20 dB from 50 GHz to 70 GHz. Beside S-parameter noise and gain compression measurements are presented. No comparable HBT am...

We present measurements of the power noise that is due to optical amplification in a laser-diode-pumped Nd:YAG free-space traveling-wave linear amplifier in a master-oscillator-power-amplifier configuration. The quantum noise behavior of the optical amplifier was demonstrated by use of InGaAs photodetectors in a balanced detection configuration, at a total photocurrent of 100 mA and in a freque...

Broad-band microwave packaging of a travelingwave amplifier with an on-chip bandwidth of 2–50 GHz is described. Techniques to reduce overall insertion losses and to extend the low-frequency cutoff of the amplifier while maintaining gain-flatness are discussed. The packaged amplifier modules exhibit excellent performance from 100 kHz to 50 GHz. They are demonstrated as modulator drivers and rece...

The new current design is especially suitable for use in multi-standard wireless receiver fo r microwaves communicat ion systems. In recent years, there has been a growing market for dual band transceivers for various wireless standards. This work investigates a novel circuit topology of concurrent Dual-band Low Noise Amplifier (LNA) operates in the 3.9 GHz and 4.48 GHz frequency bands for WLAN...

A transimpedance amplifier (TIA) is designed based on the first order wave equation. The feedback resistance is set as the ohJective function for transimpedance. The main feedback amplifier provides transimpedance and a wide band compensation amplifier determines the characteristics of overall TIA. The stability of lhe T lA is not affected due to the open loop nature of compensation. Simulation...

In this study, an eight-channel wide-band intermediate frequency (IF) receiver with S-band input frequency, output of 200 MHz, and a signal bandwidth 160 MHz was developed. The performance measurement results the IF showed that fundamental second harmonic were involved in output. This caused by nonlinearity characteristics final stage amplifier. Therefore, amplifier changed to differential ampl...