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Patent

Low noise figure radiofrequency device

TLDR
In this paper, a tower mounted amplifier (TMA), masthead amplifier (MHA), or tower mounted Boosters (TMB) is coupled to a sink via a common resonant wire.
Abstract
A RF device such as a tower mounted amplifier (TMA), mast-head amplifier (MHA), or Tower Mounted Boosters (TMB) includes a housing having a plurality of cavities and an input and an output, the input being coupled to the antenna and the output being coupled to a base station. The housing includes a transmission path holding multiple coaxial resonators. The housing further includes multiple receive paths including at least one path having a plurality of cavities, each cavity containing a dielectric resonator. The metallic transmit resonator nearest the antenna input is coupled to the first dielectric resonator via a common resonant wire. The last dielectric resonator in the receive path is coupled to a first metallic resonator of a downstream clean-up filter via another common resonant wire.

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Bypass arrangement for low-noise amplifier

Mika Niemi
TL;DR: In this paper, an antenna filter with a second output (out 2 ) parallel with a first output (OUT 1 ) connected to the low-noise amplifier (LNA) is used for bypassing a lownoise amplification (LNO) amplifier.