【発明の名称】コンバイナフィルタを同調する装置及び方法

Japanese Patent JP3078839

B2

PCT No. PCT/FI93/00567 Sec. 371 Date Oct. 25, 1994 Sec. 102(e) Date Oct. 25, 1994 PCT Filed Dec. 29, 1993 PCT Pub. No. WO94/16497 PCT Pub. Date Jul. 21, 1994.A device for tuning a combiner filter. The measuring signals (Prl . . . Prn, PF1 . . . PFn) of a number of different combiner filters are multiplexed to the same detectors. Multiplexing allows the measuring and adjusting electronics required by the tuning and adjusting means of combiner filters to be simplified considerably especially with a high number of combiner filters. Multiplexing of measuring signals is used primarily to select the sample signals of the forward and reflected power of one and the same combiner filter to be tuned for the measuring electronics. In the invention selectors for reflected power and forward power are independent of each other, which allows isolation measurement between different channels. The sample signal of the forward power of one combiner filter and the sample signal of the reflected power of another combiner filter are thus connected to the measuring electronics. When both sample signals undergo frequency-selective detection at the same frequency, the degree of isolation between the radio channels will be determined.

JPH0812964	INDUSTRIAL APPLICABILITY: Directional filter and multiplexer
JPH04185101	METHOD FOR DECIDING LENGTH OF TRANSMISSION LINE FOR MULTICOUPLER
JPH061844	Shared device

Heikire Pekka
Koukari Aero
Nousuiinen Seppo
Vasanoya Yuha
Kainurainen Marti
Kirenen Yucca
Haukipro Tebo
Niemitaro bait
Tikka Hari

JP51571294A

August 21, 2000

December 29, 1993

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Nokia Telecommunicacion Osaque Yukichia

H01P1/213; H03H7/46; H03J7/18; H04B1/04; H03H7/12; (IPC1-7): H04B1/04; H03H7/12; H03H7/46; H03J7/18

JP4156724A
JP4156723A
JP4357471A
JP4167801A
JP6511115A

Minoru Nakamura (6 outside)

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