Arrangement for dividing a filter output signal

Details Arrangement for dividing a filter output signal Arrangement for dividing a filter output signal

2005-10-31

2008-12-16

Nguyen, Duc M (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

C455S280000, C455S269000, C333S202000, C333S186000, C333S219000

Reexamination Certificate

active

07466970

ABSTRACT:
An arrangement for dividing the output signal of the antenna filter of a radio receiver to two different paths, such as two parallel low-noise amplifier branches of a base station. The divider circuit is physically integrated into a resonator-type antenna filter (RXF). This takes place by placing some conductors (332, 333) of the divider inside some conductive part of the filter structure or the resonator cavity and by using the coupling conductor (331) of the output resonator as part of the input line of the divider at the same time. As the divider is used a Wilkinson divider. Due to the arrangement, a transmission line between the antenna filter and the divider becomes unnecessary, and the dielectric losses of the divider are reduced as compared to the prior art, in which case correspondingly inferior noise qualities can be allowed for low-noise amplifiers.

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International Preliminary Report on Patent Ability for International Application No. PCT/FI2005/050060 dated Sep. 26, 2006.

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