US Pat. No. 9,653,788

ROOF-MOUNTED ANTENNA ARRANGEMENT

1. Roof-mounted antenna arrangement for motor vehicles, comprising:
a base plate made of an electrically conductive material or a dielectric material which is coated completely or in part with
an electrically conductive material,

a vertical board made of a dielectric material,
a mobile communication antenna structure formed on the vertical board,
a cover-like cap made of a dielectric material, which covers the mobile communication antenna structure and is fastened at
least indirectly to the base plate, and

a cable outlet arranged on the underside of the base plate for laying cables leading to secondary components in a vehicle
interior,

wherein the vertical board is positioned such that the lower edge thereof is arranged beneath an upwardly pointing bottom
formed by the bottom of the base plate, in a region of a recess formed in the base plate; and

wherein the base plate has a frame which at least partially surrounds the base plate, the frame defining a locking slot, the
vertical board being held in the locking slot which is formed on the base plate frame which surrounds the base plate at least
in portions.

US Pat. No. 10,368,326

CIRCUIT ARRANGEMENT FOR COMPENSATING FOR SIGNAL ATTENUATION DURING THE TRANSMISSION OF SIGNALS FROM OR TO A MOBILE COMMUNICATIONS DEVICE, AND ASSOCIATED METHOD

Kathrein Automotive GmbH,...

1. Circuit arrangement for compensating for signal attenuation during the transmission of transmission signals of a mobile communications device, comprising:a signal line having at least one signal path,
an adjustable input signal level amplifying apparatus which has at least one amplifier for amplifying the detected input signals or input signal level,
a detector apparatus which is designed to detect the associated input signal level in the circuit arrangement with respect to the transmission signals,
an adjustment or control apparatus for adjusting an amplification of the input signals or input signal levels carried out by the amplifier,
the detector apparatus being connected to the adjustment or control apparatus,
the detector apparatus and/or the adjustment or control apparatus being designed in such a manner that
a) the at least one amplifier is switched out of the signal transmission path or is deenergized, or the amplifier does not amplify, attenuate or forward the transmission signal unless a received signal level is detected which is greater than or equal to the input signal detection level (SEP) or greater than or equal to a trigger level (SAP) which is at most 10 dB greater than said detection level,
and/or
b) the amplifier is operated at a variable amplification factor in an adjustment range (X1) which begins at a lower input signal detection level (SEP) or a trigger level (SAP) which is at most 10 dB above the input signal detection level (SEP), and extends to cover higher signal levels than these, wherein, if the input signal detection level (SEP) is reached or exceeded, or the trigger level (SAP) is reached or exceeded, the input signal is either non-amplified or is attenuated at an amplification factor?1.

US Pat. No. 10,236,921

SIGNAL BOOSTER DEVICE, A MEANS OF TRANSPORTATION COMPRISING A SIGNAL BOOSTER DEVICE AND A METHOD FOR OPERATING A SIGNAL BOOSTER DEVICE

Kathrein Automotive GmbH,...

1. A signal booster device for amplifying signals in a wireless communication network, comprising:at least one first antenna for communicating with a mobile and at least one second antenna for communicating with a base station,
the signal booster device providing a signal path for electrically connecting the at least one first antenna to the at least one second antenna for transmitting uplink and downlink signals,
the signal path being split up at least partly into a first downlink signal path and into a first uplink signal path,
at least one downlink amplifier for amplifying a downlink signal and at least one uplink amplifier for amplifying an uplink signal,
the at least one downlink amplifier being arranged in the first downlink signal path, the at least one uplink amplifier being arranged in the first uplink signal path,
at least one first downlink power detector for detecting a downlink signal power,
a bypass line for directly electrically connecting the at least one first antenna to the at least one second antenna,
a control unit configured to obtain a measurement value from the at least one first downlink power detector,
the control unit being configured to enable the bypass line if the measurement value of the downlink signal power of the at least one first downlink power detector oversteps a first limit value so that the signal booster device switches from normal operation mode into bypass mode,
the at least one downlink amplifier and the at least one uplink amplifier being electrically disconnected from the respective at least one first antenna and at least one second antenna if the bypass line is enabled.