Tunable bandpass filter and method thereof

Details Tunable bandpass filter and method thereof Tunable bandpass filter and method thereof

2006-10-03

2006-10-03

Vo, Nguyen T. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

C455S121000, C455S178100, C455S282000, C333S171000, C333S176000

Reexamination Certificate

active

07116954

ABSTRACT:
The present invention provides a tunable bandpass filter and method thereof. In a preferred embodiment, the tunable bandpass filter uses variable ferro-electric capacitors to adjust both the passband and the notch across the normal operating range of a wireless communications device. The tunable bandpass filter is capable of providing a tuning range over a desired frequency range with low I.L. and high out-of-band rejections.

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
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: 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: 1 043 741 (2000-10-01), None
patent: 1 058 333 (2000-12-01), None
patent: 1 248 317 (2002-10-01), None
patent: 2 240 227 (1991-07-01), None
patent: 63 128618 (1988-06-01), None
patent: 05182857 (1993-07-01), None
patent: 2001 338839 (2001-12-01), None
patent: 82/03510 (1982-10-01), None
patent: 94/27376 (1994-11-01), None
patent: WO 00/35042 (2000-06-01), None
patent: WO 00/62367 (2000-10-01), None
patent: 03/058759 (2001-07-01), None
patent: WO 02/084798 (2002-10-01), None
Chandler, S.R. et al., “Active Varactor Tunable Bandpass Filter,”

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