REPLACEABLE CARD FOR ANTENNA FREQUENCY TUNING

• US 20200136232A1
• Filed: 10/29/2018
• Published: 04/30/2020
• Est. Priority Date: 10/29/2018
• Status: Active Grant

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola Solutions, Inc.
• Inventors: GOMELSKY, ALEXANDER, ASTANOVSKY, MICHAEL, BERKOVICH, NITZAN, KODNER, LIONID
• Granted Patent: US 10,749,243 B2
• Time in Patent Office: Days
• CPC Class Codes: H01Q 1/1264 Adjusting different parts or elements of an aerial unit
• CPC Class Codes: H01Q 1/2275 associated to expansion card or bus, e.g. in PCMCIA, PC cards, Wireless USB
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 9/0442 with particular tuning means
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

An improved antenna configuration for a communication device is provided that enables ultra wideband operation. The antenna may be formed of two sections, a primary section built into the communication device and a replaceable secondary section disposed on a data card. The primary section is common for all frequency bands of operation which the antenna is intended to cover. The replaceable secondary section is unique to predetermined frequency bands and provides tuning for the overall antenna. A data card tray antenna configuration is also provided which is suitable for a stand-alone antenna or as part of a sectional antenna.

Claims

1. A portable communication device, comprising:

a housing; and

a primary antenna section permanently located in the housing, the housing and primary antenna section being configured to interchangeably accept a plurality of replaceable cards, each replaceable card having a secondary antenna section disposed thereon for electronically coupling to the primary antenna section thereby forming a complete antenna entirely within the housing, and wherein each completed antenna configuration provides optimized efficiency at one or more predetermined frequency ranges for multiband frequency operation of the portable communication device.

2. The portable communication device of claim 1, wherein the replaceable card with secondary antenna section disposed thereon is user-replaceable, factory replaceable, and service shop replaceable.

3. The portable communication device of claim 1, wherein the primary antenna section is a passive radiator and each replaceable card having secondary antenna section disposed thereon comprises tuning elements for different sub-bands.

4. The portable communication device of claim 3, further comprising:

a passive radiator disposed on at least one of the plurality of replaceable cards.

5. The portable communication device of claim 1, wherein the plurality of replaceable cards are formed as part of a plurality of card trays, the plurality of card trays being insertable to and removable from a slot of the housing.

6. The portable communication device of claim 5, wherein the plurality of card trays comprise one of:

a plurality of subscriber identification module (SIM) card trays; and

a plurality of secure digital (SD) card trays.

7. The portable communication device of claim 5, wherein each secondary antenna section is printed on a SIM card tray.

8. The portable communication device of claim 5, wherein each secondary antenna section is printed on a SD card tray.

9. The portable communication device of claim 1, wherein each of the plurality of replaceable cards with secondary antenna section disposed thereon comprises matching circuitry.

10. The portable communication device of claim 1, wherein each of plurality of replaceable cards with secondary antenna section disposed thereon comprises matching circuitry for tuning the primary antenna section to a different frequency band.

11. The portable communication device of claim 1, further comprising:

a third antenna section permanently located in the housing, each of the plurality of replaceable cards with secondary antenna section disposed thereon being configured to electronically couple between the primary antenna section and the third antenna section.

12. The portable communication device of claim 1, wherein the portable communication device comprises a portable public safety communication device.

13. The portable communication device of claim 12, wherein the portable public safety communication device comprises a wearable portable public safety communication device.

14. The portable communication device of claim 13, wherein the wearable portable public safety communication device comprises at least one of:

a portable radio; and

a remote speaker microphone.

15. The portable communication device of claim 1, wherein the plurality of replaceable cards with secondary antenna section disposed thereon provide multiband coverage for at least one of:

5G, 4G, 3G, 2G, WiFi, BLUETOOTH, Global Navigation Satellite System (GNSS), ZigBee, Terrestrial Trunked Radio (TETRA), Land Mobile Radio (LMR), and Long Term Evolution (LTE) direct protocols.

16. The portable communication device of claim 1, wherein the replaceable cards provide coverage over different geographic regions and different use cases.

17. The portable communication device of claim 1, wherein the replaceable cards retains sealing of the communication devices.

18. An antenna, comprising:

a data card tray; and

an antenna disposed on the data card tray.

19. The antenna of claim 18, further comprising:

Antenna tuning elements disposed on the data card tray.

20. The antenna of claim 18, wherein the antenna is printed on the data card tray.

21. A method of providing multiband operation to a portable communication device, comprising:

providing a first antenna section within a housing of the portable communication device;

inserting a replaceable card having a secondary antenna section disposed thereon into the housing, thereby electrically coupling the second antenna section to the first antenna section to form a complete antenna;

operating the portable communication device over a first frequency range of operation;

removing the replaceable card;

inserting another replaceable card having a different secondary antenna section disposed thereon into the housing, thereby electrically coupling the second antenna section to the first antenna section to form a different complete antenna; and

operating the portable communication device over a second frequency range of operation.

22. The method of claim 21, wherein inserting the replaceable card further retains sealing of the portable communication device.