advertisment Advertisement
This ad will close in  seconds. Skip now
advertisment Advertisement
advertisment Advertisement
advertisment Advertisement
advertisment Advertisement

Software & CAD

Simulating Multi-finger HBTS

Introduction to a new model of multi-finger heterojunction bipolar transistors used to analyze and predict current collapse, bias dependence and output power
March 1, 2002
Technical Feature Simulating Multi-finger Power HBTs A new model of multi-finger heterojunction bipolar transistors (HBT) is presented to analyze and predict current collapse, bias dependence and output power. The simulation of multi-finger HBTs has proven to be very challenging in both computer-aided design and electromagnetic (EM) simulation. However, by...
Read More

The Importance of the Current-voltage Characteristics of FETs, HEMTs, and Bipolar Transistors in Contemporary Circuit Design

Description of the application in nonlinear circuit design of an instrument which measures the dynamic large-signal characteristics of FETs, PHEMTs and bipolar transistors
March 1, 2002
Tutorial The Importance of the Current-voltage Characteristics of FETs, HEMTs and Bipolar Transistors in Contemporary Circuit Design Peter Ladbrooke and James Bridge Accent Optical Technologies Bend, OR Traditionally, when applying computer-aided methods to the design and practical realization of nonlinear circuits, the active device models required for the circuit...
Read More

Designing a Bluetooth Transceiver in RF CMOS

Presentation of a design methodology used to facilitate the rapid prototyping and design of an RFIC
February 1, 2002
Technical Feature Designing a Bluetooth Transceiver in RF CMOS Bob Koupal and Marshall Wang Signia Technologies Milpitas, CA Cory Edelman Agilent Technologies Westlake Village, CA The design of a 2.4 GHz Bluetooth transceiver RFIC in CMOS requires careful verification of key performance criteria at all stages of the design...
Read More

A New Type of Amplitude Equalizer for In-band Flatness Improvement

Presentation of a cascade amplitude equalizer used for improving the performance of a bandpass filter frequency response in cellular band
February 1, 2002
Technical Feature A New Type of Amplitude Equalizer for In-band Flatness Improvement There is a growing need in modern communication systems for low cost bandpass filters of small size, high selectivity and flat passband response in order to meet the demands for inter-channel power balance, and to avoid interference....
Read More

Intermodulation Products for a Mixer Subjected to a Multi-carrier Signal

Use of a nonlinear mixer model to demonstrate how a transient simulation is used to predict the behavior of intermodulation products in a multi-carrier environment
February 1, 2002
Technical Feature Intermodulation Products for a Mixer Subjected to a Multi-carrier Signal Applying a multi-carrier signal to a mixer leads to a large range of intermodulation products. To perform a link budget of a multi-carrier transmit-receive system, it is important to predict the location and magnitude of those intermodulation...
Read More

Advanced Microwave Chip Capacitor Models

Use of accurate substrate-dependent chip capacitor models in computer-aided engineering software
January 1, 2002
Product Feature Advanced Microwave Chip Capacitor Models Modelithics Inc. Temple Terrace, FL Fig. 1 Measured S 11 of a 4.7 pF 0402 chip capacitor on different thickness FR4 substrates (series configuration). The use of computer-aided engineering (CAE) software by microwave printed circuit board (PCB) designers has become commonplace. These...
Read More

A Feedforward Power Amplifier with Loops to Reduce RX Band Noise and Intermodulation Distortion

Introduction to a new power amplifier developed to reduce amplified noise and intermodulation distortion signals using a feedforward technique
January 1, 2002
Technical Feature A Feedforward Power Amplifier with Loops to Reduce RX Band Noise and Intermodulation Distortion This article proposes a new power amplifier approach for the reduction of amplified noise signals in the receiver (RX) band as well as intermodulation distortion signals in the transmitter (TX) band using a...
Read More

A Large Bandwidth T-shaped Microstrip-fed Ground Plane Slot Antenna

Use of the finite difference time domain method to analyze the impedance of the T-shaped microstrip feedline structure
January 1, 2002
Technical Feature A Large Bandwidth T-shaped Microstrip-fed Ground Plane Slot Antenna The characteristics of a T-shaped microstrip feeding a ground plane slot antenna have been analyzed using the finite difference time domain (FDTD) method. The impedance and bandwidth of the proposed antenna depend highly on the design parameters. The...
Read More

Topics in Communication System Design: Carrier Triple Beats

Analysis of carrier triple beats that create third-order intermodulation interference when two or more carriers are present in one channel
January 1, 2002
Technical Feature Topics in Communication System Design: Carrier Triple Beats Howard Hausman Miteq Inc. Hauppauge, NY Intermodulation interference is typically calculated based on two signals present in the RF or IF bandwidth. When the bandwidth is less than an octave, even-order intermodulation products, such as second- and fourth-order intermodulation...
Read More

Performing Transient Analysis on PLL Frequency Synthesizers

Use of system-level simulation tool with flexible behavorial modeling capability to simulate and enhance the performance of a wireless PLL circuit
January 1, 2002
Technical Feature Performing Transient Analysis on PLL Frequency Synthesizers A PLL can be considered a subsystem within a larger communications system, so it is appropriate to analyze this type of network with the help of a system-level simulator. The use of flexible behavioral models within the simulator allows only...
Read More

Sign-In

Forgot your password?

No Account? Sign Up!

Get access to premium content and e-newsletters by registering on the web site.  You can also subscribe to Microwave Journal magazine.

Sign-Up

advertisment Advertisement