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특허 상세정보

Voltage variable FET resistor with chosen resistance-voltage relationship

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H03K-017/14    H03K-017/687    H03K-005/01    H03K-003/86   
미국특허분류(USC) 307/2961 ; 307/605 ; 307/304 ; 307/544
출원번호 US-0192340 (1988-05-10)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 18  인용 특허 : 35
초록

A voltage variable FET resistor includes a FET network comprising a plurality of FET segments each of which have a predetermined gate width and a voltage divider network including a plurality of fixed resistors coupled to the gates of the plurality of FET segments for providing a different gate width of each of the FET segments and the resistance of each of the fixed resistors is chosen to provide a predetermined relationship between the control voltage and the channel resistance of the voltage variable FET resistor.

대표
청구항

A voltage variable FET resistor comprising: a FET network comprising a plurality of FET segments having source, drain and gate electrodes, the drain electrode of each of the plurality of FET segments being coupled to an output terminal, the source electrode of each of the plurality of FET segments being coupled to an input terminal and the gate electrodes of each of the plurality of FET segments being coupled to a control voltage terminal, each of said plurality of FET segments having a predetermined gate width; and a voltage divider network coupled to s...

이 특허에 인용된 특허 (35)

  1. Parsons Dale W. (Tulsa OK). Apparatus for calibrating tape drive read system. USP1987084688113.
  2. Southard James S. (Union MI). Attenuator network for musical instrument keying system. USP1976083977291.
  3. Takada Shigeho (Oita JPX). Automatic gain control circuit. USP1981034255716.
  4. Stenbock, Roger M.. Automatic trigger sensitivity adjustment circuit. USP1985124562362.
  5. Rumelhard Christian (Creteil FRX). Biasing circuit for a field effect transistor. USP1987084686387.
  6. Knapp Richard P. (Hermosa Beach CA). Biasing method for improved performance in field effect devices. USP1985014496909.
  7. Lehmann Klaus (Mhltal DEX). Broadband circuit with rapidly variable resistor. USP1983074395643.
  8. Schmidt ; Robert H.. Brushless DC tachometer circuit. USP1978054088943.
  9. Dolby Ray M. (3340 Jackson St. San Francisco CA 94118). Circuit arrangements for modifying dynamic range using series and parallel circuit techniques. USP1987104701722.
  10. Brehm, Gailon E.; Lehmann, Randall E.. Common-gate GaAs FET design for monolithic microwave integrated circuits. USP1985104549197.
  11. Cranford ; Jr. Hayden Clavie (Durham NC) Hoffman Charles Reeves (Raleigh NC). Compensating current source. USP1977014004164.
  12. Hoover ; Merle Vincent. Complementary symmetry FET mixer circuits. USP1978054090139.
  13. Moog Robert A. (East Aurora NY). Compressor-expander for a musical instrument. USP1980054202238.
  14. Naster Ronald J. (Liverpool NY) Windyka John A. (Liverpool NY) Wolfe Allen R. (Sauquoit NY). Continuously variable phase shifting element comprised of interdigitated electrode MESFET. USP1986084605912.
  15. Fushiki, Tatsuo. Device for generating a variable control signal. USP1985104549098.
  16. Hwang Ying C. (Liverpool NY) Chen Young K. (Syracuse NY) Ragonese Louis J. (Liverpool NY). Digitally controlled wideband phase shifter. USP1987014638190.
  17. Knapp Richard P. (Hermosa Beach CA). Field effect transconductance amplifiers. USP1980124241316.
  18. Fujita Hiro (Sayama JPX) Tsuzuki Akira (Tokorozawa JPX) Ebiha Heihachiro (Tokorozawa JPX) Sekiya Fukuo (Tokorozawa JPX). Frequency division system. USP1981014244043.
  19. Palmer Charles D. (Fairview TX). GaAs monolithic medium power amplifier. USP1987024646028.
  20. Li Jim Y. (Portland OR) Weiss Frederick G. (Portland OR). GaAs voltage reference generator. USP1987084686451.
  21. Yoshida Isao (Hinodemachi JPX) Nagata Minoru (Kodaira JPX) Ochi Shikayuki (Akishima JPX) Katto Hisao (Hinodemachi JPX). High-voltage circuit for insulated gate field-effect transistor. USP1982024317055.
  22. Okada Yoshio (Tokyo JPX) Shimizu Mitsuru (Sakura JPX). Intermediate potential generation circuit. USP1987054663584.
  23. Watrous ; Donald L. ; Dobberphul ; Daniel W.. Method and apparatus for operating a semiconductor integrated circuit at minimum power requirements. USP1978064093909.
  24. Larson Ronald K. (San Jose CA). Method and means to minimize risetime of a microwave pulse modulated signal from a frequency multiplier circuit. USP1984014425515.
  25. Merrill, Dana A.. Multiple rate baseband receiver. USP1985114555788.
  26. Beaubien Randall S. (Westlake Village CA) Erps Lorri A. (Pleasanton CA). Process for making a T-gated transistor. USP1987104700462.
  27. Murphy ; Desmond Lewis. Programmable attenuator apparatus employing active FET switching. USP1978104121183.
  28. Hoshi Katsuji (Tokyo JPX). Reference voltage generator circuit. USP1983034375596.
  29. Sahara, Hiroshi; Tanaka, Yutaka. Signal level control circuit. USP1976073968452.
  30. Merrick, Edwin B.. Transducer coupling. USP1985104546651.
  31. Bradley Stevan D. (East Palo Alto CA). Unmatched field effect transistors providing matched voltage-controlled resistances. USP1977044016481.
  32. Scott Bentley N. (Richardson TX) Brehm Gailon E. (Plano TX). Varactor trimming for MMICs. USP1988014719434.
  33. Ohashi Shin-ichi (Toyokawa JA) Asada Akihiro (Kodaira JA). Variable impedance circuit. USP1977084039981.
  34. Konishi Satoshi (Tokyo JPX). Voltage reference circuit for providing a predetermined voltage to an active element circuit. USP1987034649291.
  35. Colles Joseph H. (Oceanside CA). Wideband linear video contrast control. USP1981034257064.

이 특허를 인용한 특허 피인용횟수: 18

  1. McClure David C. (Denton TX) Teel Thomas A. (Carrollton TX). Circuit for providing a compensated bias voltage. USP1996105568084.
  2. Little Wendell ; Grider Stephen ; Triece Joseph. Clocking system for microcontrollers. USP2000126167527.
  3. McClure David C.. Constant current source with reduced sensitivity to supply voltage and process variation. USP1998085793247.
  4. Patel Kirit B. ; Rao G. R. Mohan. Digital step generators and circuits, systems and methods using the same. USP1999015861767.
  5. Golio John M. (Chandler AZ) Staudinger Joseph (Chandler AZ). Digital-to-analog converting field effect device and circuitry. USP1991045005059.
  6. Austermann, III, John F.; Cummings, Marshall B.. Ethernet device. USP2017119812825.
  7. Om, Hari. Impedance matching circuit. USP2011027888962.
  8. McCarthy, Daniel P.; Connell, Lawrence E.; Hollenbeck, Neal W.. Linear voltage controlled variable attenuator with linear DB/V gain slope. USP2012038131241.
  9. McCarthy,Daniel P.; Connell,Lawrence E.; Hollenbeck,Neal W.. Linear voltage controlled variable attenuator with linear DB/V gain slope. USP2009037505748.
  10. Draxelmayr, Dieter. Linearized high-ohmic resistor. USP2017039590577.
  11. Scheinberg Norman R. (South River NJ). Low cost monolithic gallium arsenide upconverter chip. USP1997045625307.
  12. Douglas,Dale Scott. Method and apparatus for compensating amplifier output for temperature and process variations. USP2006127154329.
  13. Little Wendell L. ; Grider Stephen N. ; Triece Joseph Wayne. Microcontroller having register direct and register indirect addressing. USP2000036038655.
  14. Broxterman David ; Sandelin Stephen D.. Standard cell, 4-cycle, 8-bit microcontroller. USP2000056058467.
  15. Brokaw A. Paul. Temperature set point circuit and method employing adjustment resistor. USP1998105821741.
  16. Vullaganti, Kalyana C.. Variable impedance sense architecture and method. USP2011108036846.
  17. Lee Lan ; Awsare Saleel. Voltage controlled variable current reference. USP1998085793248.
  18. Hayama Hiroshi,JPX. Voltage source circuit for generating a plurality of values of voltages. USP1998045739593.