- San Diego CA, US Chih-Chieh Cheng - Poway CA, US Christopher C. Murphy - Lake Zurich IL, US Tero Tapio Ranta - San Diego CA, US
International Classification:
G01R 19/25 H03F 1/02 H04B 10/079
Abstract:
A power detector with wide dynamic range. The power detector includes a linear detector, followed by a voltage-to-current-to-voltage converter, which is then followed by an amplification stage. The current-to-voltage conversion in the converter is performed logarithmically. The power detector generates a desired linear-in-dB response at the output. In this power detector, the distribution of gain along the signal path is optimized in order to preserve linearity, and to minimize the impact of offset voltage inherently present in electronic blocks, which would corrupt the output voltage. Further, the topologies in the sub-blocks are designed to provide wide dynamic range, and to mitigate error sources. Moreover, the temperature sensitivity is designed out by either minimizing temperature variation of an individual block such as the v-i-v detector, or using two sub-blocks in tandem to provide overall temperature compensation. In one aspect, active resistors are used in order to compensate for temperature variations.
- San Diego CA, US Tero Tapio Ranta - San Diego CA, US Christopher C. Murphy - Lake Zurich IL, US Robert Mark Englekirk - Littleton CO, US
International Classification:
H03F 1/30 H03F 3/19 H03F 3/21
Abstract:
Temperature compensation circuits and methods for adjusting one or more circuit parameters of a power amplifier (PA) to maintain approximately constant Gain versus time during pulsed operation sufficient to substantially offset self-heating of the PA. Some embodiments compensate for PA Gain “droop” due to self-heating using a Sample and Hold (S&H) circuit. Other embodiments include bias compensation circuits that directly regulate a bias signal to an amplifier stage as a function of localized heating of one or more of amplifier stages. Such bias compensation circuits include physical placement of at least one bias compensation circuit element in closer proximity to at least one amplifier stage than other bias compensation circuit elements. One bias compensation circuit embodiment includes a temperature-sensitive current mirror circuit for regulating the bias signal. Another bias compensation circuit embodiment includes a temperature-sensitive element having a positive temperature coefficient (PTC) for regulating the bias signal.
Positive Temperature Coefficient Bias Compensation Circuit
Temperature compensation circuits and methods for adjusting one or more circuit parameters of a power amplifier (PA) to maintain approximately constant Gain versus time during pulsed operation sufficient to substantially offset self-heating of the PA. Some embodiments compensate for PA Gain “droop” due to self-heating using a Sample and Hold (S&H) circuit. Other embodiments include bias compensation circuits that directly regulate a bias signal to an amplifier stage as a function of localized heating of one or more of amplifier stages. Such bias compensation circuits include physical placement of at least one bias compensation circuit element in closer proximity to at least one amplifier stage than other bias compensation circuit elements. One bias compensation circuit embodiment includes a temperature-sensitive current mirror circuit for regulating the bias signal. Another bias compensation circuit embodiment includes a temperature-sensitive element having a positive temperature coefficient (PTC) for regulating the bias signal.
Abdominal Hernia Inguinal Hernia Ventral Hernia Appendicitis Cholelethiasis or Cholecystitis
Languages:
Arabic English Spanish
Description:
Dr. Murphy graduated from the University of South Florida College of Medicine at Tampa in 1986. He works in Tampa, FL and specializes in General Surgery. Dr. Murphy is affiliated with James A Haley Veterans Hospital.
Dr. Murphy graduated from the Albert Einstein College of Medicine at Yeshiva University in 1987. He works in Schenectady, NY and specializes in Family Medicine. Dr. Murphy is affiliated with Bellevue Womans Care Campus and Ellis Hospital.
Dr. Murphy graduated from the University of Maryland School of Medicine in 1999. He works in Martinsburg, WV and specializes in Addiction Psychiatry and Psychiatry.
Christopher B Murphy DPM 107 Merrimac St, Edgewater, FL 32132 386 428-5656 (phone), 386 428-5440 (fax)
Procedures:
Hallux Valgus Repair
Conditions:
Hallux Valgus Plantar Fascitis Tinea Pedis
Languages:
English
Description:
Dr. Murphy works in Edgewater, FL and specializes in Podiatric Medicine. Dr. Murphy is affiliated with Florida Hospital New Smyrna and Halifax Health Medical Center.
Dr. Murphy graduated from the Oregon Health & Science University School of Medicine in 2011. He works in Medford, OR and specializes in Internal Medicine. Dr. Murphy is affiliated with Asante Rogue Regional Medical Center and Providence Medford Medical Center.
Christiana Care Emergency Medicine 4755 Ogletown Stanton Rd, Newark, DE 19718 302 733-1840 (phone), 302 733-1633 (fax)
Education:
Medical School Emory University School of Medicine Graduated: 1986
Languages:
English Spanish
Description:
Dr. Murphy graduated from the Emory University School of Medicine in 1986. He works in Newark, DE and specializes in Emergency Medicine. Dr. Murphy is affiliated with Christiana Hospital.
Medical School Lake Erie College of Osteopathic Medicine, Erie Campus Graduated: 2009
Languages:
English
Description:
Dr. Murphy graduated from the Lake Erie College of Osteopathic Medicine, Erie Campus in 2009. He works in Cleveland, OH and specializes in Emergency Medicine. Dr. Murphy is affiliated with Fairview Hospital.
Christopher Scott "Chris" Murphy (born August 3, 1973) is the U. S. Representative for Connecticut's 5th congressional district, serving since 2007. ...
Auto Tort Liability Eminent Domain or Condemnation Government Defense Commercial Litigation Construction Defect Litigation Hospitality & Retail Defense Professional Liability & Medical Malpractice Real Estate & Title Defense Transportation Defense
ISLN:
912851981
Admitted:
1997
University:
American University, Washington, D.C.; Gettysburg College, B.A., 1994
uropean socialists" in charge of the party and name-checking Sen. Kamala Harris, D-Calif.; Sen. Elizabeth Warren, D-Mass.; New York City Mayor Bill de Blasio; New York Gov. Andrew Cuomo; Sen. Cory Booker, D-N.J.; Sen. Christopher Murphy, D-Conn.; and Rep. Keith Ellison, D-Minn., to boos in the crowd.
Date: Feb 23, 2018
Category: U.S.
Source: Google
NRA chief attacks anti-gun 'elites' after Florida school shooting
LaPierre attacked Democrats by name including Senators Kamala Harris, Elizabeth Warren and Christopher Murphy and also took a swipe at the FBI for failing to follow up on a tip about the alleged shooter in the Parkland massacre. The FBI has said it failed to act on the tip.
Date: Feb 22, 2018
Category: Top Stories
Source: Google
Donnelly, Senators Demand Answers about Dramatic Price Hike For Lifesaving Anti-Opioid Injection Device
Once they set this [repeal] process in motion, its hard to stop, Sen. Christopher Murphy, Connecticut Democrat, said late Wednesday. Were going to figure out what parts of the Affordable Care Act theyre going to preserve and what parts theyre going to throw out. Were going to use votes tonig
ch McConnell, Chris Gahan with Sen. Pat Toomey, Cynthia Pullom with Sen. Christopher Murphy, Preston Rutledge with the Senate Finance Committee and John OHara of the Senate Banking Committee. From the House side, Joe Fawell with Rep. Peter Roskam and Katherine Monge with Democratic Leader Rep. Nanc
Date: Dec 07, 2016
Category: World
Source: Google
Obama administration's $1 billion arms deal aids Saudi brutality in Yemen, lawmakers say
As the humanitarian crisis continues to deteriorate, anti-American sentiment is spiraling as the local population blames the U.S. for the thousands of civilian deaths resulting from the Saudis bombing campaign, Sen. Christopher Murphy, Connecticut Democrat, said in a statement.
Date: Sep 11, 2016
Category: World
Source: Google
'One man's vulgarity is another man's lyric': Toronto man found not guilty in Twitter harassment trial
Its been a very very long process, Elliotts lawyer Christopher Murphy said, adding thats longer than some murder trials. I think what his honour is saying is youre allowed to express your view as long as your view doesnt cross any criminal thresholds As long as youre expressing a political
Date: Jan 22, 2016
Source: Google
US flag to fly over Havana again, but that won't end America's Cuba debate
Embargo and isolation failed to bring fundamental change to Cuba and have instead become a source of friction between the United States and our partners in the Western Hemisphere and across the globe, said Sen. Christopher Murphy (D) of Connecticut in a statement.