Alfred Riddle - Profile on Academia.edu (original) (raw)
Papers by Alfred Riddle
Oscillator Noise: Theory and Characterization
The problem of designing low noise oscillators is becoming increasingly important because of requ... more The problem of designing low noise oscillators is becoming increasingly important because of requirements on radar, communications, and test equipment. Computer -aided design techniques have been available for amplifier and filter designers for many years. Since oscillators are nonlinear they are much more difficult to analyze than amplifiers. In order to achieve computer-aided design of oscillators a complete theory of
![Research paper thumbnail of Low-Noise Techniques [From the Guest Editors' Desk]](https://attachments.academia-assets.com/108588316/thumbnails/1.jpg)
](IEEE Microwave Magazine
Mathematica ® in the Laboratory
arXiv (Cornell University), Aug 1, 1997
IEEE Transactions on Microwave Theory and Techniques, 2017
This paper presents the design and development of highly linear, wide bandwidth mixers. We propos... more This paper presents the design and development of highly linear, wide bandwidth mixers. We propose a linearization technique that combines the optimum drain bias condition and multiple-gated transistors for resistive mixers. An on-chip threeline edge-coupled Marchand balun is designed to have low phase and amplitude imbalance for canceling out the even order intermodulation products. Two mixer prototypes: a singlebalanced (SB) mixer and a double-balanced (DB) mixer are designed to prove the concepts. The experimental results demonstrate that the SB prototype mixer has a measured conversion loss of less than 11 dB and third-order input intercept point (IIP3) range of 27-33 dBm at 15-dBm LO drive from 7 to 34 GHz. The DB mixer exhibits a conversion loss of less than 11 dB and IIP3 range of 31-35 dBm from 7-26 GHz at 17-dBm LO drive. Both prototypes achieve a high port-to-port isolation of over 30 dB within the operation bandwidth. To the best of our knowledge, the mixers have the highest linearity over the widest bandwidth ever reported.
Ultraminiature 180 degree phase shifter
System and method for gas analysis using doubly resonant photoacoustic spectroscopy
System and method for gas analysis using photoacoustic spectroscopy
System and method for laser temperature compensation
Oscillator Noise: Theory and Characterization
The problem of designing low noise oscillators is becoming increasingly important because of requ... more The problem of designing low noise oscillators is becoming increasingly important because of requirements on radar, communications, and test equipment. Computer -aided design techniques have been available for amplifier and filter designers for many years. Since oscillators are nonlinear they are much more difficult to analyze than amplifiers. In order to achieve computer-aided design of oscillators a complete theory of
A novel 10 MHz to 70 GHz surface mount amplifier for broadband applications
2014 9th European Microwave Integrated Circuit Conference, 2014
The paper demonstrates novel, state-of-the-art monolithic microwave integrated circuit (MMIC) on ... more The paper demonstrates novel, state-of-the-art monolithic microwave integrated circuit (MMIC) on laminate surface mount module with unprecedented bandwidth. It covers a 12 octave continuous bandwidth, 10 MHz to 70 GHz, with 12dB of gain, 50 Ω I/O match, and +10dBm power output. It does this with a GaAs based 0.1u PHEMT distributed amplifier and 3 dimensional co-planar signal routing. Suitable for applications from instrumentation to electronic warfare, it takes PCB based systems to the next level in bandwidth.
System and method for temperature measurement
Multi-tone phase modulation for light wave communication system
A 100 Gb/s Ethernet modulator driver module based on coplanar GaAs PHEMT distributed MMIC amplifier
2012 IEEE/MTT-S International Microwave Symposium Digest, 2012
We present a 100 Gb/s Ethernet modulator driver module based on a coplanar GaAs PHEMT 9 section c... more We present a 100 Gb/s Ethernet modulator driver module based on a coplanar GaAs PHEMT 9 section coplanar integrated distributed amplifier. It has a 30 kHz to 67GHz bandwidth suitable for direct 100 Gb/s clocking. Process technology, MMIC design, and module design are described and are neither exotic nor expensive to produce. The MMIC in this module provides 12dB typical gain and 3.5Vpp output voltage. To the author's knowledge this is the broadest bandwidth surface mount module made to date.
Applied electronic engineering with Mathematica
Applied Electronic Engineering with Mathematica is a hands-on tutorial for engineers, scientists,... more Applied Electronic Engineering with Mathematica is a hands-on tutorial for engineers, scientists, and students who want to solve a wide range of practical problems using mathematica, a computer-based mathematics system. The book describes a number of ...
Tuning and matching the TM1 cavity
Review of Scientific Instruments, 1983
The cylindrical resonant cavity operating in the TM010 mode is increasingly being used to generat... more The cylindrical resonant cavity operating in the TM010 mode is increasingly being used to generate a microwave-induced plasma (MIP) for elemental analysis by atomic emission spectrometry. In this study, the concepts of tuning and impedance matching for the Beenakker type TM010 resonant cavity are discussed. Proper placement and penetration depth of an antenna coupling probe appear to be a preferable approach to matching the TM010 microwave resonant cavity to a microwave generator. This approach precludes the use of external matching devices that add complexity to the system. In our system, a long probe penetrating 92% into the cavity well and positioned 14 mm from the center of the cavity allowed operation of a critically coupled argon plasma at 13–15 W as recorded from the generator’s calibrated power meter. Additionally, a detector is described that permits measurement of the electric field inside the cavity. The electric field inside the cavity decreases substantially upon igniti...
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Evolution of Noise [From the Guest Editor's Desk
IEEE Microwave Magazine, 2010
One of the technical committees in the Microwave Theory and Techniques Society (MTT-S) is MTT-14,... more One of the technical committees in the Microwave Theory and Techniques Society (MTT-S) is MTT-14, the low-noise committee. Each committee has a goal of spreading knowledge about their subject by sponsoring workshops and panel sessions at the yearly symposium, providing lectures, and furthering knowledge to the microwave community. This special issue contains four articles contributed by the low-noise committee, which cover a wide range of topics. While they certainly do not cover all aspects of noise, we hope these articles will answer some questions and inspire some interest among readers in this large and fascinating subject.
A Long, Winding Road
IEEE Microwave Magazine, 2010
There is a great deal of literature concerning oscillator noise. The problem of oscillator noise ... more There is a great deal of literature concerning oscillator noise. The problem of oscillator noise has been considered from intuitive to mathematically sophisticated viewpoints. In recent years, treatments of oscillator noise have concentrated on equations that are easier to use or are more complete in their characterization of nonlinearities and noise sources. Oscillator noise analysis has reached a level of sophistication that allows several general theories to be constructed. This article presents a historical tour of oscillator noise analysis and will not go into detail on any one method. It provides a brief tutorial on oscillator noise, and a survey of many of the papers that have contributed to our present understanding. Because many authors use different approaches and notation, there will be a number of different equations presented without derivation. The various equations cited will be described in enough detail to show how they contribute to understanding oscillator noise, and the reader is encouraged to refer to the original papers for detailed discussions. The “History” section will present a family tree of oscillator noise, and the “Present Models” section will review some of the more seminal papers. Tutorials on phase noise can be found in handbooks and in the references from this article. Please see ”Oscillator Noise Basics“ for background information on oscillation and noise.
Choice Reviews Online, 1998
Oscillator Noise: Theory and Characterization
The problem of designing low noise oscillators is becoming increasingly important because of requ... more The problem of designing low noise oscillators is becoming increasingly important because of requirements on radar, communications, and test equipment. Computer -aided design techniques have been available for amplifier and filter designers for many years. Since oscillators are nonlinear they are much more difficult to analyze than amplifiers. In order to achieve computer-aided design of oscillators a complete theory of
IEEE Microwave Magazine
Mathematica ® in the Laboratory
arXiv (Cornell University), Aug 1, 1997
IEEE Transactions on Microwave Theory and Techniques, 2017
This paper presents the design and development of highly linear, wide bandwidth mixers. We propos... more This paper presents the design and development of highly linear, wide bandwidth mixers. We propose a linearization technique that combines the optimum drain bias condition and multiple-gated transistors for resistive mixers. An on-chip threeline edge-coupled Marchand balun is designed to have low phase and amplitude imbalance for canceling out the even order intermodulation products. Two mixer prototypes: a singlebalanced (SB) mixer and a double-balanced (DB) mixer are designed to prove the concepts. The experimental results demonstrate that the SB prototype mixer has a measured conversion loss of less than 11 dB and third-order input intercept point (IIP3) range of 27-33 dBm at 15-dBm LO drive from 7 to 34 GHz. The DB mixer exhibits a conversion loss of less than 11 dB and IIP3 range of 31-35 dBm from 7-26 GHz at 17-dBm LO drive. Both prototypes achieve a high port-to-port isolation of over 30 dB within the operation bandwidth. To the best of our knowledge, the mixers have the highest linearity over the widest bandwidth ever reported.
Ultraminiature 180 degree phase shifter
System and method for gas analysis using doubly resonant photoacoustic spectroscopy
System and method for gas analysis using photoacoustic spectroscopy
System and method for laser temperature compensation
Oscillator Noise: Theory and Characterization
The problem of designing low noise oscillators is becoming increasingly important because of requ... more The problem of designing low noise oscillators is becoming increasingly important because of requirements on radar, communications, and test equipment. Computer -aided design techniques have been available for amplifier and filter designers for many years. Since oscillators are nonlinear they are much more difficult to analyze than amplifiers. In order to achieve computer-aided design of oscillators a complete theory of
A novel 10 MHz to 70 GHz surface mount amplifier for broadband applications
2014 9th European Microwave Integrated Circuit Conference, 2014
The paper demonstrates novel, state-of-the-art monolithic microwave integrated circuit (MMIC) on ... more The paper demonstrates novel, state-of-the-art monolithic microwave integrated circuit (MMIC) on laminate surface mount module with unprecedented bandwidth. It covers a 12 octave continuous bandwidth, 10 MHz to 70 GHz, with 12dB of gain, 50 Ω I/O match, and +10dBm power output. It does this with a GaAs based 0.1u PHEMT distributed amplifier and 3 dimensional co-planar signal routing. Suitable for applications from instrumentation to electronic warfare, it takes PCB based systems to the next level in bandwidth.
System and method for temperature measurement
Multi-tone phase modulation for light wave communication system
A 100 Gb/s Ethernet modulator driver module based on coplanar GaAs PHEMT distributed MMIC amplifier
2012 IEEE/MTT-S International Microwave Symposium Digest, 2012
We present a 100 Gb/s Ethernet modulator driver module based on a coplanar GaAs PHEMT 9 section c... more We present a 100 Gb/s Ethernet modulator driver module based on a coplanar GaAs PHEMT 9 section coplanar integrated distributed amplifier. It has a 30 kHz to 67GHz bandwidth suitable for direct 100 Gb/s clocking. Process technology, MMIC design, and module design are described and are neither exotic nor expensive to produce. The MMIC in this module provides 12dB typical gain and 3.5Vpp output voltage. To the author's knowledge this is the broadest bandwidth surface mount module made to date.
Applied electronic engineering with Mathematica
Applied Electronic Engineering with Mathematica is a hands-on tutorial for engineers, scientists,... more Applied Electronic Engineering with Mathematica is a hands-on tutorial for engineers, scientists, and students who want to solve a wide range of practical problems using mathematica, a computer-based mathematics system. The book describes a number of ...
Tuning and matching the TM1 cavity
Review of Scientific Instruments, 1983
The cylindrical resonant cavity operating in the TM010 mode is increasingly being used to generat... more The cylindrical resonant cavity operating in the TM010 mode is increasingly being used to generate a microwave-induced plasma (MIP) for elemental analysis by atomic emission spectrometry. In this study, the concepts of tuning and impedance matching for the Beenakker type TM010 resonant cavity are discussed. Proper placement and penetration depth of an antenna coupling probe appear to be a preferable approach to matching the TM010 microwave resonant cavity to a microwave generator. This approach precludes the use of external matching devices that add complexity to the system. In our system, a long probe penetrating 92% into the cavity well and positioned 14 mm from the center of the cavity allowed operation of a critically coupled argon plasma at 13–15 W as recorded from the generator’s calibrated power meter. Additionally, a detector is described that permits measurement of the electric field inside the cavity. The electric field inside the cavity decreases substantially upon igniti...
[
Evolution of Noise [From the Guest Editor's Desk
IEEE Microwave Magazine, 2010
One of the technical committees in the Microwave Theory and Techniques Society (MTT-S) is MTT-14,... more One of the technical committees in the Microwave Theory and Techniques Society (MTT-S) is MTT-14, the low-noise committee. Each committee has a goal of spreading knowledge about their subject by sponsoring workshops and panel sessions at the yearly symposium, providing lectures, and furthering knowledge to the microwave community. This special issue contains four articles contributed by the low-noise committee, which cover a wide range of topics. While they certainly do not cover all aspects of noise, we hope these articles will answer some questions and inspire some interest among readers in this large and fascinating subject.
A Long, Winding Road
IEEE Microwave Magazine, 2010
There is a great deal of literature concerning oscillator noise. The problem of oscillator noise ... more There is a great deal of literature concerning oscillator noise. The problem of oscillator noise has been considered from intuitive to mathematically sophisticated viewpoints. In recent years, treatments of oscillator noise have concentrated on equations that are easier to use or are more complete in their characterization of nonlinearities and noise sources. Oscillator noise analysis has reached a level of sophistication that allows several general theories to be constructed. This article presents a historical tour of oscillator noise analysis and will not go into detail on any one method. It provides a brief tutorial on oscillator noise, and a survey of many of the papers that have contributed to our present understanding. Because many authors use different approaches and notation, there will be a number of different equations presented without derivation. The various equations cited will be described in enough detail to show how they contribute to understanding oscillator noise, and the reader is encouraged to refer to the original papers for detailed discussions. The “History” section will present a family tree of oscillator noise, and the “Present Models” section will review some of the more seminal papers. Tutorials on phase noise can be found in handbooks and in the references from this article. Please see ”Oscillator Noise Basics“ for background information on oscillation and noise.
Choice Reviews Online, 1998