Data Based IQ Modulator

Posted on Feb 5, 2014

The IQ_Mod project illustrates the use of the IQ_Mod_Setup and IQ_Mod_Data components in ADS. These components are part of the ADS behavioral model suite found under the System - Data Models palette. `IQ_mod_ckt. dsn` is a schematic for the modulator of interest. This modulator is a modification of the circuit-level modulator constructed.

Click here to download the full size of the above Circuit.

The biggest difference is the removal of the amplifier ["PA_2stg. dsn"]. The modulator is constructed of the sub-circuits "MixerGilCel. dsn", "phase_shift. dsn", and "Wilkinson. dsn". "circuit_level_ramp. dsn" is a schematic for a circuit level Circuit Envelope simulation of "IQ_mod_ckt. dsn" with I_Q waveforms that have time-varying amplitude. The result is in the dataset "circuit_level_ramp. ds". "behavioral_level_ramp. dsn" is a schematic for a behavioral level Circuit Envelope simulation with I_Q waveforms that have time-varying amplitude. "IQ_mod_ckt. dsn" is modeled behaviorally with IQ_Mod_Data along with the dataset "Setup_IQ_mod_ckt. ds". The result is in the dataset "behavioral_level_ramp. ds". "circuit_level_QAM. dsn" is a schematic for a circuit level Circuit Envelope simulation of "IQ_mod_ckt. dsn" with I_Q waveforms for a 16 QAM modulation. The result is in the dataset "circuit_level_QAM. ds". "behavioral_level_QAM. dsn" is a schematic for a behavioral level Circuit Envelope simulation of with I_Q waveforms for a 16 QAM modulation. "IQ_mod_ckt. dsn" is modeled behaviorally with IQ_Mod_Data along with the dataset "Setup_IQ_mod_ckt. ds". The result is in the dataset "behavioral_level_QAM. ds". In Figure 1, a comparison of circuit and behavioral level results is given for Circuit Envelope simulation. Both input and output waveforms are modeled accurately. In Figure 2, a comparison of circuit and behavioral level...

Leave Comment

characters left:

Related Circuits

Cell Phone Controlled Home Appliance circuit

Ever Imagined controlling your home appliances using your cell phone. You can find a lot of circuits for this application. But they make use of Telephone. I modified the circuit and redesigned it...

Circuit for controlling 8 appliances using TV Remote

The IR circuit can be used to switch devices using TV Remote. Normal circuits can switch only one device. But using this circuit, different devices can be controlled using same remote with...

Serial COM port using ATmega8

Many times, I have written code for UART communication and when it came to testing, my laptop does not have a serial port. I bought a USB to serial port converter but it didnt worked. I felt...

de amst wiskar: robot line folower

One of my student has made a disgraceful robot that used two stepper motors and with a simple IR sensor. Yes, above picture is what I`m talking. Without battery carrying, a little bit torque of the...

Dual cable (serial + USB) for Nikon coolpixes

To assure that USB and serial segments are electrically isolated, we used an optocoupler (U1). The LED section of U1 is driven directly by DTR, so we should select a very sensitive optocoupler to...

classic led flasher circuit

This LED flasher circuit is a classic two transistor flip flop. This flasher circuit is very popular and it`s usually the first circuit to build when starting electronic circuit building hobby....

ac-motor-control-circuits

Perhaps the most challenging aspect of interpreting ladder diagrams, for people more familiar with electronic schematic diagrams, is how electromechanical relays are represented. Compare these two...

Stamp9G20

This document was written with care, but errors cannot be excluded. Neither the company named above nor the seller assumes legal liability for mistakes, resulting operational errors or the...

New Circuits

Zero consumption Anti-theft High power Code Switch for E-Bike Batteries

This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
Ultrasonic distance finder circuit

The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Simple Metal detector circuit with CD4030

Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Fully automatic watering circuit for flower pots

Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
Simple deep searching metal detector circuit

The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
Sub-Harmonic Bass Converter for Electric Guitars

The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
Echo Depth Sounding Sonar for Boats

In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
100W HiFi Audio Amplifier Circuit

This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
Plant-Pot Water Level Indicator Circuit

A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....

Create NOW your QR MENU for your Restaurant / Hotel / Bar / Caffe,

Comprehensive ordering/paying features. fully personalized to suit your Business.

Update Anytime! Easy and Simple!

Popular Circuits

Latch Switch

In this circuit a non-locking push switch is used to activate a load. The load remains switched...

Two buttons Safety relay

This circuit turns on a relay when two buttons are pressed at the same time.The relay backs off...

3 Channel Color Organ Circuit

The ac line power is brought back into the circuit through Fl, a protective 5-A fuse. One side...

Interfacing PC keyboard to AVR microcontroller

In many situations you need some kind of human interface to your microcontroller project. In this...

Crystal Radio

My original BFO, a small EICO 330 solid state signal generator, served well to bring in a variety...

arduino scr

In this circuit we demonstrate how to use SCRs to control low-voltage pulsating DC to operate...

Fuse with status indicator

Here is the circuit diagram of a fuse that has an automatic status indicator. This circuit can be...

The HDR and interval trigger

This article explains how to build the second improved version of the HDR-Jack. In contrast to...

metal detector project circuit

I have found the schematic diagram on Metal Detector For this class it does not have to be...

Sound Blaster Microphone Preamplifier

Circuit is based basically on quite well tested my simple microphone preamplifier. I have built...

psmd

The A4988 driver IC has a maximum current rating of 2A per coil, but the actual current you can...

A TREAD sized regulator

The size of the tread was 5cm by 3cm. My design, at the moment is 5cm by 3. 3cm. The basis of the...

Light Alarm Circuit

This is a circuit that will go off once it detects a certain amount of light. Once the light the...

General Hobbyist Circuits

This circuit describes a simple, 6-bit random number pseudo-generator used to study binary...

Amateur Radio Projects

It took sometime to develop this interface for Echolink. It uses PIC16F84A and accepts external...