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1. (WO2010078275) APPARATUS AND METHOD FOR IMPROVING CHANNEL FILTER SELECTIVITY AND PERFORMANCE USING VOLTAGE VARIABLE IMPEDANCE ELEMENTS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/078275 International Application No.: PCT/US2009/069617
Publication Date: 08.07.2010 International Filing Date: 28.12.2009
IPC:
H01P 1/20 (2006.01) ,H03H 9/52 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
P
WAVEGUIDES; RESONATORS, LINES OR OTHER DEVICES OF THE WAVEGUIDE TYPE
1
Auxiliary devices
20
Frequency-selective devices, e.g. filters
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9
Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
46
Filters
48
Coupling means therefor
52
Electric coupling means
Applicants:
QUALCOMM Incorporated [US/US]; Attn: International IP Administration 5775 Morehouse Drive San Diego, California 92121, US (AllExceptUS)
TONCICH, Stanley S. [US/US]; US (UsOnly)
RAJKOTIA, Amol [IN/US]; US (UsOnly)
Inventors:
TONCICH, Stanley S.; US
RAJKOTIA, Amol; US
Agent:
XU, Jiayu; Attn: International IP Administration 5775 Morehouse Drive San Diego, Califonia 92121, US
Priority Data:
12/344,90329.12.2008US
Title (EN) APPARATUS AND METHOD FOR IMPROVING CHANNEL FILTER SELECTIVITY AND PERFORMANCE USING VOLTAGE VARIABLE IMPEDANCE ELEMENTS
(FR) APPAREIL ET PROCÉDÉ D'AMÉLIORATION DE LA SÉLECTIVITÉ ET DES PERFORMANCES D'UN FILTRE DE CANAL AU MOYEN D'ÉLÉMENTS D'IMPÉDANCE VARIABLE EN FONCTION DE LA TENSION
Abstract:
(EN) A controllable filter arrangement with a voltage controlled device that subjects a signal to a predetermined impedance as part of the filtering process when the voltage controlled device is in an active state. In an inactive state, the voltage controlled device may subject the signal to an impedance that prevents all frequencies of the signal from passing. This configuration may advantageously increase frequency selectivity and reduce insertion loss, size, cost, and tuning complexity when compared with conventional filter designs.
(FR) Ensemble filtre réglable équipé d'un dispositif commandé en tension soumettant un signal à une impédance prédéfinie dans le cadre du processus de filtrage lorsque le dispositif commandé en tension est dans un état actif. Dans un état inactif, le dispositif commandé en tension peut soumettre le signal à une impédance bloquant la transmission de toutes les fréquences du signal. Cette configuration peut avantageusement améliorer la sélectivité en fréquence et réduire l'affaiblissement d'insertion, les dimensions, le coût et la complexité d'accord par rapport aux conceptions de filtres classiques.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP2371029JP2012514437CN102273006KR1020110098860IN3920/CHENP/2011