Please review the attached flyer for information about this very exciting workshop on GPS.

The Columbus Antennas and Propagation & Microwave Theory and Techniques Joint Society has announced the following officers for 2011:

Let's give everyone a warm welcome!

Please join me in congratulating the new executive committee of the IEEE AP/MTT Columbus Joint Chapter.

Chair:
Prof. Ron Reano
Electrical and Computer Engineering Dept.
The Ohio State University

Co-chair:
Dr. Dimitris Psychoudakis
ElectroScience Laboratory
The Ohio State University

Secretary/Treasurer:
Prof. Waleed Khalil
Electrical and Computer Engineering Dept.
The Ohio State University

Congratulations!

IEEE AP-MTT Chapter Presents:

“Integrated power management units for wireless applications”
By
Wei Liu
Ohio State University

Date: 2:00-3:00PM, Friday February 6th, 2009

Place: ElectroScience Laboratory, 1320 Kinnear Rd, Columbus, OH 43212

Title: “Integrated power management units for wireless applications”

Abstract:
With the advancement of technology, wireless communications now facilitate
our daily lives from entertainment to business, from work to pastime.
However, the demands for longer battery runtime from customers conflict
with the slow-paced development of better battery technology. As a result,
design of integrated power management units for wireless applications is
becoming a critical issue for the new generation wireless applications
which combine the integrated business such as voice, multimedia and data.
In this talk, I will first summarize the categories band structures of
integrated power management units. Then I will emphasize the implementation
of integrated power management units especially low drop-out voltage
regulator (LDO) and introduce a new structure to low drop-out voltage
regulator. This structure is based on using a transimpedance amplifier as
the error amplifier in traditional structure of low drop-out voltage
regulator. The bulky off-chip external capacitor at the output of
traditional low drop-out voltage regulator can be removed in the new
structure. Therefore, it is very attractive to be an integrated power
management unit for the new generation wireless applications. I will also
outline the design and summarize the performance of the new structure low
drop-out voltage regulator. In conclusion, I will briefly review today's
content with a small discussion on the future design challenges on this new
structure low drop-out voltage regulator.

Short Bio:
Wei Liu was born in Xi'an, China in 1976. He received his BSc. degree in
1998, Msc. degree in 2001 all in Electrical engineering from Xi'an
Jiaotong University, China. He was an ASIC design engineer from 2001 to
2003 in Zhongxing Corporation, China and an analog integrated circuit
design engineer from 2003 to 2007 in Samsung Electronics, Korea. In
September 2007, he joined the Department of Electrical and Computer
Engineering at Ohio State University as a Ph.D. student. His research areas
include analog and mixed-signal integrated circuit design and integrated
power electronics.

IEEE AP-MTT Chapter Presents:

“Manufacturable 60GHz CMOS LNAs”

By

Amneh Akour

Ohio State University
Date: 2:00-3:00PM, Friday January 23th, 2009
Place: ElectroScience Laboratory
1320 Kinnear Rd
Columbus, OH 43212

Title:
“Manufacturable 60GHz CMOS LNAs”

Abstract:
Emerging broadband applications are pushing for the need to build high data rate wireless transceivers at 60GHz for high volume low cost mobile devices. Central to the success of implementing such transceivers is the robust design of 60GHz CMOS RF front ends, especially the low noise amplifiers (LNAs). In this talk, two different topologies are used to build LNAs; two-stage CG-CS LNA and three-stage CS LNA. The performance of these topologies is compared to select the best one with the best transmission line type. I then propose a digital self-calibration technique for LNAs’ to enhance the yield to at least 90%. The proposed technique is shown to maintain typical specified performance at worst case corners and hence allowing for manufacturable 60GHz RF CMOS design for high volume applications without leading to over-design or increasing power consumption. The LNA has been designed and simulated in IBM 90nm technology. It is shown that the proposed calibration restores LNA performance in the presence of random process, supply and temperature variations. After presenting simulation results, I will conclude my talk with a small discussion on some of the future challenges and suggestions in designing robust 60 GHz LNAs

Short Bio:
Amneh Akour was born in Mafrak, Jordan. She received her BSc. Degree in 1990 in Electrical Engineering from the University of Jordan and MSc. degree in 1997 in Electrical and Computer Engineering from Iowa State University. She is currently engaged in research toward the PhD degree in circuit design from Ohio State University. She was a lecturer from 1998 to 2006 in the Electrical Engineering and Computer Engineering Department at Sharjah University, an assistant research scientist from 1996 to August 1997 in the Electrical Engineering and Computer Engineering Department of the Iowa State University, and a teaching assistance from 1990 to 1995 in the Electrical Engineering Department of the University of Jordan. Her research areas include Design Manufacturer RF blocks, Analog/Mixed VLSI Design, Digital Circuit Design, Microwave Transistor Amplifiers and Oscillators, and Theory and Design of Digital Computers. She has published 5 journal and conference papers in these areas. She received the Fulbright scholarship to continue her Master’s degree at Iowa State University. She graduated with honor degree from Iowa State University. She is an officer at Ohio State Minority group. She is a member of Honor Society of Phi Kappa Phi, a member of Society of Women Engineering, and a member of IEEE (Institute of Electrical and Electronics Engineering).

--
Dr. Dimitris Psychoudakis
Senior Research Associate
Electroscience Laboratory
The Ohio State University
1320 Kinnear Rd.
Columbus, OH 43212
United States

--
Email: dpsycho@ece.osu.edu
Tel: +1-614-292-6895

IEEE AP-MTT Chapter Presents:

“Fully Integrated CMOS Radios for Broadband Wireless Devices: Challenges and Solutions”

By

Dr. Seok-Bae (Michael) Park
Firstpass Technologies, Inc., Dublin, Ohio
Date: 2:00-3:00PM, Thursday, October 2nd , 2008
Place: ElectroScience Laboratory, 1320 Kinnear Rd, Columbus, OH 43212

Title:

“Fully Integrated CMOS Radios for Broadband Wireless Devices: Challenges and Solutions”

Abstract:

This talk will address some of the key challenges in designing low power low cost fully integrated CMOS RFIC front ends for wireless broadband applications. A key challenge in emerging MIMO platforms is the front end module which represents a major bottleneck for the total cost of the solution. Examples are found in today’s high data rate 802.11n WLANs, in mobile WiMAX and in cellular super 3G or LTE (Long Term Evolution). To address this challenge a design for an on chip T/R switch is presented. Its performance compares favorably with that of off-the-shelf switch. It occupies only 0.7 mm2.

Another key challenge is the design of mixed signal baseband chains for a direct conversion radio. The I-Q receive and transmit chains tend to occupy a significant portion of the total area (25 to 40%) of a radio solution. To address this challenge, we present a new methodology for designing a compact radio where the mixed signal chain is shared between receive and transmit chains.

Thirdly, in designing broadband radios for OFDM non-constant envelope modulation, highly linear mixer design is needed. Here we present a novel mixer design intended for use in an enhanced data rate (EDR V.2.1) Bluetooth solution where linearization techniques are adopted to meet the stringent linearity requirements imposed on the radio.

The design examples discussed in this talk demonstrate the potential success of CMOS in building highly complex radios specially in emerging nanometer technologies for broadband and for integrated mm-wave (60GHz and beyond) RFIC applications.

Short Bio:
Seok-Bae (Michael) Park received the B.S. and M.S. degrees in Electrical Engineering from Seoul National University, Seoul, Korea, and the M.S. and Ph.D. degrees in Electrical and Computer Engineering from Ohio State University, Columbus, Ohio.

He is currently with Firstpass Technologies, Inc., Dublin, Ohio as a Senior RF and Mixed-Signal Design Engineer. His current interests include low voltage/low power CMOS RF/analog/mixed-signal integrated circuits and systems for wireless communications. He has a number of publications in prestigious international journals and conference proceedings and has applied for one US patent.

Prof. Cornelis Jan Kikkert
Electrical and Computer Engineering
James Cook University
Townsville, Queensland, Australia

Date: 1:00-2:00PM, Thursday, September 25th, 2008

Place: ElectroScience Laboratory, 1320 Kinnear Rd , Columbus , OH 43212

Title:

“Designing RF and Microwave Filters”

Abstract:

The seminar will briefly review low pass filters and then show two ways how low pass filters can be implemented at microwave frequencies. Most RF and microwave filters are bandpass filters and constructed using coupled resonators. The seminar will describe a general design technique for designing any coupled resonator filter. As an example of the technique, four different microstrip filters are designed. Each of these filters result in a very different stop-band behaviour, however for each of these filters, the simulated and measured responses agree closely. The seminar will include a demonstration of the design technique and show how both the passband and harmonic response can be tailored to requirements. This design technique allows new filter topologies to be investigated.

Short Bio:
Cornelis (Keith) Kikkert has been carrying designing specialized communication equipment for many years. These include FM exciters, Weather Satellite Receivers, RF front ends, Power Amplifiers, software radios and Satellite Beacon Receivers. One Beacon Receiver is in operation at CRC in Canada and another two are located at NTU in Singapore. He is the author of more than 70 papers and is a designated inventor on 8 patents. Keith is an Associate Professor at James Cook University, where he has been teaching for many years. He was the head of Electrical Engineering for 7 years. He is the Chair of the Australia Council of the IEEE and he has been either Vice Chair or Chair of the North Australian section since 1997.
--
Dr. Dimitris Psychoudakis
Senior Research Associate
Electroscience Laboratory
The Ohio State University
1320 Kinnear Rd.
Columbus, OH 43212
United States
--
Email: dpsycho@ece.osu.edu
Tel: +1-614-292-6895