Granted Patent B2

US 12,548,908 · App. 18/714,983 · Granted Feb 10, 2026

Inventors: Harri Varheenmaa (Helsinki, FI); Elmo Lepola (Espoo, FI); Pasi Yla-Oijala (Vantaa, FI); Anu Lehtovuori (Espoo, FI); Ville Viikari (Espoo, FI)

Assignee: NOKIA TECHNOLOGIES OY

H01Q9/045H01Q1/245

Abstract

Claims (53)

1 . An apparatus comprising:

an antenna radiator having a first end and a second end;

a ground plane spaced from the antenna radiator;

a first feed element and a second feed element;

a first feed point configured to couple a first radio frequency signal to the first end of the antenna radiator and the first feed element;

a second feed point configured to couple a second radio frequency signal to the second end of the antenna radiator and the second feed element;

wherein the first and second feed elements are configured to electromagnetically couple to the antenna radiator; and

wherein the antenna radiator comprises:

a strip portion, which extends from the first end to the second end of the antenna radiator, that is unbroken and devoid of slots;

a plurality of slots on a first side of the strip portion; and

a plurality of slots on a second side of the strip portion.

2 . The apparatus of claim 1 , wherein a phase of the second radio frequency signal is configured to be:

different to a phase of the first radio frequency signal; and/or

opposite to a phase of the first radio frequency signal.

3 . The apparatus of claim 1 , wherein an amplitude of the second radio frequency signal is configured to be the same as an amplitude of the first radio frequency signal.

4 . The apparatus of claim 1 , wherein an amplitude of the second radio frequency signal is configured to be different to an amplitude of the first radio frequency signal.

5 . The apparatus of claim 1 , wherein the apparatus comprises a central transverse axis and a central longitudinal axis, and wherein at least one from a group of the following is reflectionally symmetric about the central transverse axis and/or the central longitudinal axis:

the apparatus;

the antenna radiator;

the first and second feed elements;

the first and second feed points;

the plurality of slots; and

the strip portion of the antenna radiator.

6 . The apparatus of claim 1 , wherein the apparatus comprises a central point thereof, and wherein at least one from a group of the following is rotationally symmetric about the central point:

the apparatus;

the antenna radiator;

the first and second feed elements;

the first and second feed points;

the plurality of slots; and

the strip portion of the antenna radiator.

7 . The apparatus of claim 1 , wherein at least one of the first feed element and the second feed element:

respectively extends along a length of a first and a second edge of the antenna radiator;

is “I” shaped;

respectively extends along substantially half the perimeter of the antenna radiator; and/or

is “U” shaped.

8 . The apparatus of claim 1 , wherein at least some of the plurality of slots are at least one from a group of:

“I” shaped;

“L” shaped;

“J” shaped;

“U” shaped; and

meandering.

9 . The apparatus of claim 1 , wherein at least one or more of the plurality of slots are configured to be nested slots.

10 . The apparatus of claim 1 , wherein at least some of the plurality of slots define a plurality of nested loops of the antenna radiator.

11 . The apparatus of claim 1 , wherein the antenna radiator comprises a plurality of loops on the first side of the strip portion and a plurality of loops on the second side of the strip portion.

12 . The apparatus of claim 11 , wherein the plurality slots are non-conductive, wherein the plurality of loops are conductive, and wherein the conductive loops of the plurality of conductive loops are separated by non-conductive slots of the plurality of non-conductive slots.

13 . The apparatus of claim 11 , wherein the plurality of loops define a plurality of nested loops.

14 . The apparatus of claim 10 , wherein an outermost loop of the plurality of nested loops is “U” shaped.

15 . The apparatus of claim 10 , wherein a separation distance between an outermost loop of the plurality of nested loops and a second most outer loop of the plurality of nested loops is between 1/10 th and 1/100 th of a wavelength corresponding to a centre frequency of an operational range of frequencies of the apparatus.

16 . The apparatus of claim 10 , wherein a separation distance between an outermost loop of the plurality of nested loops and a feeding element is approximately equal to 1/100 th of a wavelength corresponding to a centre frequency of an operational range of frequencies of the apparatus.

17 . The apparatus of claim 1 , wherein a longitudinal dimension and/or a transverse dimension of the apparatus is approximately equal to half of a wavelength corresponding to a centre frequency of an operational range of frequencies of the apparatus.

18 . The apparatus of claim 1 , wherein the ground plane is comprised in a housing of an energy storage device of a portable wireless communication device.

19 . The apparatus of claim 1 , wherein at least a part of the apparatus is positioned in a housing for a portable wireless communication device.

20 . A portable electronic device comprising one or more apparatuses as claimed in claim 1 .

Assignments (2)

Continuity (1)

References Cited (20)