Bandpass filter with tunable resonator

Telecommunications – Receiver or analog modulated signal frequency converter – With particular receiver circuit

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C455S125000, C455S178100, C333S171000, C330S303000

Reexamination Certificate

active

11060036

ABSTRACT:
A tunable bandpass filter is provided that comprises a first shunt-connected ferroelectric (FE) tunable tank circuit having a first node to accept an input signal. A second shunt-connected FE tunable tank circuit has a second node to supply a bandpass filtered signal. A first capacitor is connected in series between the first and second nodes. In one aspect, the first tank circuit comprises a first resonator connected to the first node, and a fourth capacitor connected between the first resonator and a reference voltage. The fourth capacitor is a tunable FE capacitor. Typically, a fifth capacitor is connected between the first node and the reference voltage. Likewise, the second tank circuit comprises a second resonator connected to the second node, and a sixth (FE) capacitor connected between the second resonator and the reference voltage. A seventh capacitor is connected between the second node and the reference voltage.

REFERENCES:
patent: 3239838 (1966-03-01), Kelleher
patent: 3413543 (1968-11-01), Schubring et al.
patent: 3569795 (1971-03-01), Gikow
patent: 3676803 (1972-07-01), Simmons
patent: 3678305 (1972-07-01), George
patent: 3680135 (1972-07-01), Boyer
patent: 3737814 (1973-06-01), Pond
patent: 3739299 (1973-06-01), Adler
patent: 3836874 (1974-09-01), Maeda et al.
patent: 3918012 (1975-11-01), Peuzin
patent: 4122400 (1978-10-01), Medendorp et al.
patent: 4236125 (1980-11-01), Bernard et al.
patent: 4475108 (1984-10-01), Moser
patent: 4484157 (1984-11-01), Helle et al.
patent: 4494081 (1985-01-01), Lea et al.
patent: 4525720 (1985-06-01), Corzine et al.
patent: 4626800 (1986-12-01), Murakami et al.
patent: 4733328 (1988-03-01), Blazej
patent: 4736169 (1988-04-01), Weaver et al.
patent: 4737797 (1988-04-01), Siwiak et al.
patent: 4746925 (1988-05-01), Toriyama
patent: 4792939 (1988-12-01), Hikita et al.
patent: 4799066 (1989-01-01), Deacon
patent: 4835499 (1989-05-01), Pickett
patent: 4835540 (1989-05-01), Haruyama et al.
patent: 4847626 (1989-07-01), Kahler et al.
patent: 4975604 (1990-12-01), Barta
patent: 5166857 (1992-11-01), Avanic et al.
patent: 5173709 (1992-12-01), Lauro et al.
patent: 5212463 (1993-05-01), Babbitt et al.
patent: 5216392 (1993-06-01), Fraser
patent: 5227748 (1993-07-01), Sroka
patent: 5231407 (1993-07-01), McGirr et al.
patent: 5293408 (1994-03-01), Takahashi et al.
patent: 5307033 (1994-04-01), Koscica et al.
patent: 5325099 (1994-06-01), Nemit et al.
patent: 5388021 (1995-02-01), Stahl
patent: 5406163 (1995-04-01), Carson et al.
patent: 5416803 (1995-05-01), Janer
patent: 5427988 (1995-06-01), Sengupta et al.
patent: 5450092 (1995-09-01), Das
patent: 5451915 (1995-09-01), Katzin et al.
patent: 5459123 (1995-10-01), Das
patent: 5472935 (1995-12-01), Yandrofski et al.
patent: 5479139 (1995-12-01), Koscica et al.
patent: 5495215 (1996-02-01), Newell et al.
patent: 5496795 (1996-03-01), Das
patent: 5496796 (1996-03-01), Das
patent: 5502422 (1996-03-01), Newell et al.
patent: 5525942 (1996-06-01), Horii et al.
patent: 5557286 (1996-09-01), Varadan et al.
patent: 5561307 (1996-10-01), Mihara et al.
patent: 5561407 (1996-10-01), Koscica et al.
patent: 5564086 (1996-10-01), Cygan et al.
patent: 5574410 (1996-11-01), Collins et al.
patent: 5577025 (1996-11-01), Skinner
patent: 5583524 (1996-12-01), Milroy
patent: 5589845 (1996-12-01), Yandrofski et al.
patent: 5600279 (1997-02-01), Mori
patent: 5617104 (1997-04-01), Das
patent: 5640042 (1997-06-01), Koscica et al.
patent: 5649306 (1997-07-01), Vanatta et al.
patent: 5652599 (1997-07-01), Wallace et al.
patent: 5673188 (1997-09-01), Lusher et al.
patent: 5701595 (1997-12-01), Green, Jr.
patent: 5721194 (1998-02-01), Yandrofski et al.
patent: 5729239 (1998-03-01), Rao
patent: 5777524 (1998-07-01), Wojewoda et al.
patent: 5777839 (1998-07-01), Sameshina et al.
patent: 5778308 (1998-07-01), Sroka et al.
patent: 5830591 (1998-11-01), Sengupta et al.
patent: 5834975 (1998-11-01), Bartlett et al.
patent: 5864932 (1999-02-01), Evans et al.
patent: 5870670 (1999-02-01), Ripley
patent: 5880921 (1999-03-01), Tham et al.
patent: 5892486 (1999-04-01), Cook et al.
patent: 5908811 (1999-06-01), Das
patent: 5910994 (1999-06-01), Lane et al.
patent: 5945887 (1999-08-01), Makino et al.
patent: 5965494 (1999-10-01), Terashima et al.
patent: 5973567 (1999-10-01), Heal et al.
patent: 5973568 (1999-10-01), Shapiro et al.
patent: 5986515 (1999-11-01), Sakurai
patent: 5987314 (1999-11-01), Salto
patent: 5990766 (1999-11-01), Zhan
patent: 6008659 (1999-12-01), Traynor
patent: 6018282 (2000-01-01), Tsuda
patent: 6020787 (2000-02-01), Kim et al.
patent: 6026311 (2000-02-01), Willemsen Cortes et al.
patent: 6028561 (2000-02-01), Takei
patent: 6049726 (2000-04-01), Gruenwald et al.
patent: 6052036 (2000-04-01), Enstrom et al.
patent: 6054908 (2000-04-01), Jackson
patent: 6094588 (2000-07-01), Adam
patent: 6097263 (2000-08-01), Mueller et al.
patent: 6101102 (2000-08-01), Brand et al.
patent: 6108191 (2000-08-01), Bruchhaus et al.
patent: 6160524 (2000-12-01), Wilber
patent: 6181777 (2001-01-01), Kiko
patent: 6198441 (2001-03-01), Okabe
patent: 6216020 (2001-04-01), Findikoglu
patent: 6242843 (2001-06-01), Pohjonen et al.
patent: 6272336 (2001-08-01), Appel et al.
patent: 6278383 (2001-08-01), Endo et al.
patent: 6281023 (2001-08-01), Eastep et al.
patent: 6281534 (2001-08-01), Arita et al.
patent: 6285337 (2001-09-01), West et al.
patent: 6292143 (2001-09-01), Romanofsky
patent: 6294964 (2001-09-01), Satoh
patent: 6308051 (2001-10-01), Atokawa
patent: 6327463 (2001-12-01), Welland
patent: 6329959 (2001-12-01), Varadan et al.
patent: 6333719 (2001-12-01), Varadan
patent: 6335710 (2002-01-01), Falk et al.
patent: 6344823 (2002-02-01), Deng
patent: 6359444 (2002-03-01), Grimes
patent: 6362784 (2002-03-01), Kane et al.
patent: 6362789 (2002-03-01), Trumbull et al.
patent: 6366489 (2002-04-01), Salling
patent: 6384785 (2002-05-01), Kamogawa et al.
patent: 6404304 (2002-06-01), Kwon et al.
patent: 6456236 (2002-09-01), Hauck et al.
patent: 6462628 (2002-10-01), Kondo et al.
patent: 6489860 (2002-12-01), Ohashi
patent: 6503786 (2003-01-01), Klodzinski
patent: 6518850 (2003-02-01), Falk et al.
patent: 6518920 (2003-02-01), Proctor, Jr. et al.
patent: 6522220 (2003-02-01), Yamada et al.
patent: 6525630 (2003-02-01), Zhu et al.
patent: 6525691 (2003-02-01), Varadan et al.
patent: 6531936 (2003-03-01), Chiu et al.
patent: 6559737 (2003-05-01), Nagra et al.
patent: 6571110 (2003-05-01), Patton et al.
patent: 6600456 (2003-07-01), Gothard et al.
patent: 6653977 (2003-11-01), Okabe et al.
patent: 6667723 (2003-12-01), Forrester
patent: 6686817 (2004-02-01), Zhu et al.
patent: 6721293 (2004-04-01), Komulainen et al.
patent: 6727535 (2004-04-01), Sengupta et al.
patent: 6819203 (2004-11-01), Taniguchi
patent: 6842086 (2005-01-01), Zennamo, Jr.
patent: 2001/0026243 (2001-10-01), Koitsalu et al.
patent: 2001/0043159 (2001-11-01), Masuda et al.
patent: 2002/0049064 (2002-04-01), Banno
patent: 2002/0093400 (2002-07-01), Zhu et al.
patent: 2002/0149526 (2002-10-01), Tran et al.
patent: 2002/0149535 (2002-10-01), Toncich
patent: 2002/0175878 (2002-11-01), Toncich
patent: 2003/0062971 (2003-04-01), Toncich
patent: 2003/0134665 (2003-07-01), Kato et al.
patent: 2004/0087280 (2004-05-01), Watanabe et al.
patent: 2004/0162047 (2004-08-01), Kasahara et al.
patent: 2004/0196121 (2004-10-01), Toncich
patent: 2004/0212457 (2004-10-01), Eden et al.
patent: 2004/0263411 (2004-12-01), Fabrega-Sanchez et al.
patent: 2005/0007291 (2005-01-01), Fabrega-Sanchez et al.
patent: 40 36 866 (1991-07-01), None
patent: 100 24 483 (2001-11-01), None
patent: 101 37 753 (2003-02-01), None
patent: 0 125 586 (1984-11-01), None
patent: 0 346 089 (1989-12-01), None
patent: 0 473 373 (1992-03-01), None
patent: 0 531 125 (1993-03-01), None
patent: 0 631 399 (1994-12-01), None
patent: 0 637 131 (1995-02-01), None
patent: 0 680 108 (1995-11-01), None
patent: 0 795 922 (1997-09-01), None
patent: 0 854 567 (1998-07-01), None
patent: 0 872 953 (1998-10-01), None
patent: 0 881 700 (1998-12-01), None
patent: 0 892 459 (1999-01-01), None
patent: 0 909 024 (1999-04-01), None
patent: 1 04

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Bandpass filter with tunable resonator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bandpass filter with tunable resonator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bandpass filter with tunable resonator will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3890841

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.