JHU MMIC Design EE787 Course
The MMIC Design course is a graduate Electrical
Engineering class at
Students learn about Monolithic Microwave Integrated Circuit Design (MMIC) during the first half of the semester and then apply that knowledge on a MMIC design project. This year's student projects are shown as layouts and reports below. Gary Wray of Agilent EEsof provided software support for ADS. TriQuint Semiconductor provided the design library for Agilent's ADS design tool and is fabricating the GaAs ICs during the beginning of 2005. Microwave Office offered students software and a TriQuint TQTRX library for use with the course. About half the students used ADS and about half used Microwave Office for the 9 projects. Designs were checked using ICEDs DRC and LVS capabilities. Students will return to test the fabricated ICs in early-2005.
MMIC DESIGN EE 525.787 FALL 2004--STUDENT PROJECTS
STUDENT PROJECTS
This year’s project for the MMIC Design class at The Johns Hopkins University is a duplex transceiver employing a receive array for the C-band HiperLAN wireless local area network (WLAN) and industrial, scientific, and medical (ISM) frequencies. The frequency conversion scheme uses an C-band frequency converter, which produces a 275 MHz IF signal that carries the modulation. The modulated 275 MHz IF is upconverted to C-band in the transmit mode. The frequency converter consists of a mixer, VCO, and frequency doubler. The VCO operates from 2712 to 2813 MHz, which when doubled is between the WLAN and ISM frequencies. A phase shifter chip implements a 3 bit phase for the receive array. Transmit level control is implemented with the MMIC attenuator chip. Each element of the receive chain array consists of an LNA and a driver amplifier in cascade, followed by a phase shifter. The transmit path employs a driver amplifier feeding a 100 milliwatt power amplifier. Nine unique MMIC designs make up the S-band transceiver. Each design is to be contained on a 60 mil square die in the TQS TRx process. The proposed block diagram is shown below.
FALL 2004 MMIC Projects--C Band Duplex Transceiver
Fall 2004
MMIC Projects--Overview
Fall 2004 MMIC Projects--Layouts
Attenuator Report--Jacob Morton
Attenuator Layout--Jacob Morton
Frequency Doubler Report--Andrew Zundel
Frequency Doubler Layout--Andrew Zundel
Low Noise Amplifier 1 Report--Brian McMonagle
Low Noise Amplifier 1 Layout--Brian McMonagle
Low Noise Amplifier 2 Report--Clarence Weston
Low Noise Amplifier 2 Layout--Clarence Weston
Mixer Report--Jason Abrahamson
Mixer Layout--Jason Abrahamson
Phase Shifter 1 Report--Henry Weiss
Phase Shifter 1 Layout--Henry Weiss
Phase Shifter 2 Report--Andrew Walters and Kevin Shaffer
Phase Shifter 2 Layout--Andrew Walters and Kevin Shaffer
Power Amplifier Report--Duane Harvey
Power Amplifier Layout--Duane Harvey
Voltage Controlled Oscillator Report--Dontae Ryan and Ade George
Voltage Controlled Oscillator Layout--Dontae Ryan and Ade George
JHU MMIC Design EE787 Fall 2004 Results
Following will be the test results of the MMIC chips designed in the Fall 2004 MMIC class after fabrication (Winter 2005) and test (Spring 2005). The chips make up a C-Band duplex transceiver system for the C-band HiperLAN wireless local area network (WLAN) and industrial, scientific, and medical (ISM) frequencies.
Measured Results--Fall 2004 MMICs