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1. (WO1998052291) ARRANGEMENT FOR REDUCING INTERMODULATION DISTORTION OF RADIO FREQUENCY SIGNALS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/052291 International Application No.: PCT/FI1998/000368
Publication Date: 19.11.1998 International Filing Date: 28.04.1998
IPC:
H01P 1/213 (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
213
combining or separating two or more different frequencies
Applicants:
NOKIA TELECOMMUNICATIONS OY [FI/FI]; Keilalahdentie 4 FIN-02160 Espoo, FI (AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, CA, CF, CG, CH, CI, CM, CN, CU, CY, CZ, DE, DK, EE, ES, FI, FR, GA, GB, GE, GH, GM, GN, GR, GW, HU, ID, IE, IL, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MC, MD, MG, MK, ML, MN, MR, MW, MX, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW)
PIIRAINEN, Risto [FI/FI]; FI (UsOnly)
Inventors:
PIIRAINEN, Risto; FI
Agent:
PATENTTITOIMISTO TEKNOPOLIS KOLSTER OY; c/o Kolster OY AB Iso Roobertinkatu 23 P.O. Box 148 FIN-00121 Helsinki, FI
Priority Data:
97185030.04.1997FI
Title (EN) ARRANGEMENT FOR REDUCING INTERMODULATION DISTORTION OF RADIO FREQUENCY SIGNALS
(FR) SYSTEME PERMETTANT DE REDUIRE LA DISTORSION PAR INTERMODULATION DES SIGNAUX RF
Abstract:
(EN) The invention relates to an arrangement for radio frequency signals particularly in a duplex filter summing part comprising a conductive housing (22) and at least one common transmission line (15) for at least two different signals. In order to reduce intermodulation distortion of signals, which arises in the summing part, the housing (22) of the summing part is arranged to function as a ground plane for the transmission line (15) without the ground plane of a printed board or a ground plane otherwise connected to the transmission line (15).
(FR) L'invention concerne un système destiné aux signaux RF, notamment dans une partie de sommation d'un filtre duplex. Ce système comprend un boîtier conducteur (22) et au moins une ligne de transmission (15) commune destinée à au moins deux signaux différents. Pour réduire la distorsion par interdomulation des signaux, se produisant dans la partie de sommation, le boîtier (22) de la partie de sommation est conçu pour fonctionner comme une plaque de masse de la ligne de transmission (15) sans que la plaque de masse d'une carte à circuits imprimés ou autre plaque de masse ne soit reliée à la ligne de transmission (15).
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Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: Finnish (FI)
Also published as:
NO19986183EP0922336US6321069JP2000513913 CN1225761DE000069821875
AU1998070475