Mobile radio antenna for connection to at least one mobile base station

Patent metadata

Field	Value
Publication number	US-12015206-B2
Application number	US-201917298738-A
Country	US
Kind code	B2
Filing date	Nov 29, 2019
Priority date	Nov 30, 2018
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

A mobile radio antenna for connection to at least one mobile base station. The mobile radio antenna comprises a plurality of radiating elements and an antenna array module, which comprises at least a first housing module. The first housing module comprises a first receiving space and a second receiving space, which are separated from each other by at least one partition. A first phase shifter arrangement is situated in the first receiving space. A first duplex filter assembly is situated in the second receiving space. The at least one partition comprises a first opening, wherein a common terminal of the first duplex filter assembly is electrically or electromagnetically connected to a common terminal of the first phase shifter arrangement through the first opening. Furthermore, an antenna-side terminal of the first phase shifter arrangement is electrically connected directly or indirectly to a first terminal of at least one radiating element.

First claim

The invention claimed is:

1. A mobile radio antenna for connection to at least one mobile base station, having the following characteristics:
there are provided a plurality of radiating elements and a carrier assembly;
the plurality of radiating elements are arranged on a first side of the carrier assembly and are adapted to sending and receiving mobile radio signals in at least a first mobile radio band;
there is provided an antenna array module, arranged on a second side of the carrier assembly, the antenna array module comprising at least a first housing module;
the first housing module comprises a first receiving space, which is bounded by side walls and a housing bottom, and a second receiving space, which is bounded by side walls and a housing bottom;
the first and second receiving space are separated from each other by at least one partition;
there is provided at least a first phase shifter arrangement, situated in the first receiving space, comprising a common terminal and a plurality of antenna-side terminals, wherein each antenna-side terminal of the first phase shifter arrangement is electrically connected directly or indirectly to a first terminal of at least one radiating element;
there is provided at least a first duplex filter assembly, situated in the second receiving space, wherein the first duplex filter assembly comprises a common terminal and a first TX terminal and a first RX terminal;
the at least one partition comprises a first opening, wherein the common terminal of the first duplex filter assembly is electrically or electromagnetically connected to the common terminal of the first phase shifter arrangement through the first opening, wherein the first and the second receiving space of the first housing module are accessible through the same side of the first housing module; and the at least one partition is formed by a side wall of the first housing module, wherein the first and the second receiving space are bounded on one side, forming the first opening in the side wall; and
the first duplex filter assembly has a damping/transmission function such that:
a) transmit signals of a transmission band in the at least one first mobile radio band are passed through from the TX terminal to the common terminal; and
b) receive signals of a reception band in the at least one first mobile radio band are passed through from the common terminal to the RX terminal; and
a) transmit signals in the at least one first mobile radio band are subjected to a blocking attenuation from the TX terminal to the RX terminal; and
b) receive signals in the at least one first mobile radio band are subjected to a blocking attenuation from the common terminal to the TX terminal.

2. The mobile radio antenna according to claim 1 , characterized by the following features:
the first phase shifter arrangement comprises a phase shifter, wherein the phase shifter comprises the plurality of antenna-side terminals and wherein the phase shifter comprises a common input terminal;
there is provided a signal change unit, comprising the common terminal and at least a first output terminal; and
the at least one first output terminal of the signal change unit is electrically connected to the common input terminal of the phase shifter.

3. The mobile radio antenna according to claim 2 , characterized by the following features:
the phase shifter of the first phase shifter arrangement is a difference phase shifter or a linear phase shifter; and/or
the signal change unit comprises a matching network.

4. The mobile radio antenna according to claim 1 , characterized by the following features:
the first housing module comprises a third receiving space, which is bounded by side walls and a housing bottom;
the second and the third receiving space are separated from each other by a further partition;
there is provided a first low-noise amplifier, which is situated in the third receiving space; and
the at least one further partition comprises an opening, wherein the first low-noise amplifier is electrically connected by this opening to the RX terminal of the first duplex filter assembly.

5. The mobile radio antenna according to claim 1 , characterized by the following features:
there is provided at least one first power amplifier; and
the at least one first power amplifier is situated outside the antenna array module and the first housing module and is electrically connected by a cable connection to the TX terminal of the first duplex filter assembly.

6. The mobile radio antenna according to claim 5 , characterized by the following features:
there is provided a radome, which covers at least the plurality of radiating elements; and
the at least one first power amplifier is arranged interchangeably on the mobile radio antenna, such that a replacement of the at least one first power amplifier can be done without disassembly of the antenna array module or the radome.

7. The mobile radio antenna according to claim 1 , characterized by the following features:
the at least one first duplex filter assembly:
a) has a cavity design; or
b) comprises ceramic resonators; or
c) comprises strip conductors which are arranged on a circuit board or on a metal sheet.

8. The mobile radio antenna according to claim 1 , characterized by the following features:
there is provided at least a second phase shifter arrangement, situated in the first receiving space, comprising a common terminal and a plurality of antenna-side terminals;
there is provided at least a second duplex filter assembly, situated in the second receiving space, wherein the second duplex filter assembly comprises a common terminal and a first TX terminal and a first RX terminal and wherein the first and the at least one second duplex filter assembly are decoupled from each other; and
the at least one second duplex filter assembly has a damping/transmission function such that:
a) transmit signals of a transmission band in at least one second mobile radio band are passed through from the TX terminal to the common terminal; and
b) receive signals of a reception band in the at least one first second radio band are passed through from the common terminal to the RX terminal; and
a) transmit signals in the at least one second mobile radio band are subjected to a blocking attenuation from the TX terminal to the RX terminal; and
b) receive signals in the at least one second mobile radio band are subjected to a blocking attenuation from the common terminal to the TX terminal;

the at least one partition comprises a second opening, wherein the common terminal of the second duplex filter assembly is electrically or electromagnetically connected to the common terminal of the second phase shifter arrangement through the second opening;
there is provided a diplex filter assembly situated in the first receiving space;
the diplex filter assembly comprises a plurality of antenna-side terminals, wherein each antenna-side terminal of the diplex filter assembly is electrically connected to a respective first terminal of at least one radiating element;
the diplex filter assembly comprises a plurality of first terminals, wherein the antenna-side terminals of the first phase shifter arrangement are electrically connected to a respective first terminal of the diplex filter assembly;
the diplex filter assembly comprises a plurality of second terminals, wherein the antenna-side terminals of the second phase shifter arrangement are electrically connected to a respective second terminal of the diplex filter assembly; and
the diplex filter assembly has a damping/transmission function such that:
a) mobile radio signals in the at least one first mobile radio band are passed through from the antenna-side terminals to the

Assignees

• Ericsson Telefon Ab L M

Inventors

• Rottmoser Franz
• Staita Christoph

Classifications

• H04B1/005

  adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges · CPC title

• H01Q3/32

  by mechanical means · CPC title

• H01Q1/32

  Adaptation for use in or on road or rail vehicles · CPC title

• H01Q1/246 Primary

  specially adapted for base stations · CPC title

• H01P1/2133

  using coaxial filters (H01P1/2131, H01P1/2136 take precedence) · CPC title