Antenna device comprising feeding means and a hand-held radio communication device for such antenna device

• US 6,339,408 B1
• Filed: 05/17/1999
• Issued: 01/15/2002
• Est. Priority Date: 05/18/1998
• Status: Expired due to Fees

• Current Assignee: Laird Technologies AB (Laird PLC)
• Original Assignee: Allgon AB (Bure Equity AB)
• Inventors: Bousquet, Thierry, Bohannan, Richard, Edvardsson, Olov
• Primary Examiner(s): Wong, Don
• Assistant Examiner(s): Dinh, Trinh Vo
• Application Number:
  US09/312,497
• Time in Patent Office: 974 Days
• Field of Search: H01/Q.136, 343/895, 343/702, 343/700.MS, 343/853, 343/860, 343/778, 343/906
• US Class Current: 343/895
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence
• CPC Class Codes: H01Q 1/362 for broadside radiating helical antennas
• CPC Class Codes: H01Q 11/08 Helical antennas

Abstract

The object of the present invention is to achieve an easily mounted antenna device for receiving and/or transmitting circular polarized RF signals in at least one and preferably two frequency bands with a well defined interface towards the circuitry in the hand-held mobile communication device. This is obtained by providing N radiating elements where N is an integer greater than one, a support means arranged to support said radiating elements, a housing, and at least one connection member arranged to be easily connectable to a circuitry on a first printed circuit carrier arranged in said hand-held mobile communication device. Further more, providing at least one phasing network comprising N first ports arranged to be connected to said radiating elements and at least one second port arranged to be connected to said connection member, said phasing network being mounted to said support.

Claims

1. A hand-held mobile radio communication device for direct communication with a satellite, wherein said hand-held mobile radio communication device comprising:

an antenna for receiving and/or transmitting circular polarized RF signals in at least a first and a second frequency band, said communication device having N radiating elements, where N is an integer greater than one, support means arranged to support said radiating elements, and an electromechanical interface arranged to be connectable to a first transceiving circuitry mounted on a first circuit carrier in said communication device and having at least one connection member, each of said N radiating elements arranged to operate in both said first and said second frequency band,

said communication device further including at least a second circuitry, and said second circuitry including at least one phasing network, N first ports arranged to be connected to said radiating elements,

at least one second port arranged to be connected to said connection member, said second circuitry is arranged on at least one second circuit carrier and mounted to said support means, and

N diplexers, each connected to one of said radiating elements for transceiving RF signals from said N radiating elements, diplexing said RF signals into at least a first Tx frequency and at least a first Rx frequency, transceiving said at least first Tx frequency to a first phasing network, transceiving said first Rx frequency to a second phasing network, said first phasing network being connected to a first connection member and said second phasing network being connected to a second connection member, and wherein said diplexers being mounted to said support means and completely enclosed in a housing.

2. Antenna device for receiving and/or transmitting circular polarized RF signals in at least a first and a second frequency band, said antenna device comprising:

N radiating elements, where N is an integer greater than one,

support means arranged to support said radiating elements, and

an electromechanical interface having at least one connection member arranged to be connectable to a first transceiving circuitry mounted on a first circuit carrier in a telecommunication device,

each of said N radiating elements arranged to operate in both said first and said second frequency band,

said antenna device further comprising at least a second circuitry, and said second circuitry including

at least one phasing network,

N first ports arranged to be connected to said radiating elements, and

at least one second port arranged to be connected to said connection member,

said second circuitry is arranged on at least one second circuit carrier and mounted to said support means, and

N diplexers each connected to one of said radiating elements for transceiving RF signals from said N radiating elements, diplexing said RF signals into at least a first Tx frequency and at least a first Rx frequency, transceiving said at least first Tx frequency to a first phasing network, transceiving said first Rx frequency to a second phasing network, said first phasing network being connected to a first connection member and said second phasing network being connected to a second connection member, and wherein said diplexers being mounted to said support and completely enclosed in a housing.

3. The antenna device according to claim 2, wherein said support means is mainly cylindrical, a second circuit carrier is securely mounted on said support means with the normal of said second circuit carrier parallel to the axis of said mainly cylindrical support means and the radius of a circle circumscribing said second circuit carrier being less than or equal to the radius of said mainly cylindrical support means, said second circuit carrier being connected to said N radiating elements on one side, and a third circuit carrier is securely mounted on said second circuit carrier with its normal perpendicular to the normal of said second circuit carrier, and in one end connected to said at least one connection member.

4. The antenna device according to claim 3, wherein said phasing network is arranged on said second circuit carrier and where said first and second circuit carrier connects said connection member with said N radiating elements through said phasing network.

5. The antenna device according to claim 4, wherein said phasing network is arranged on said third circuit carrier and where said first and second circuit carrier connects said connection member with said N radiating elements through said phasing network.

6. The antenna device according to claim 2, wherein said phasing network is arranged on a thin plastic carrier securely mounted on said support, and being connected to said N radiating elements and to said at least one connection member.

7. The antenna device according to claim 2, further comprising:

a diplexer arranged for transceiving RF signals from said phasing network, diplexing said RF signals into at least a first Tx frequency and at least a first Rx frequency, and transceiving said at least first Tx and said at least first Rx frequencies to a first and a second connection member, and wherein said diplexer being mounted to said support.

8. The antenna device according to claim 2, wherein said phasing network is comprised of discrete components.

9. The antenna device according to claim 2, wherein N is equal to four, said phasing network comprises one 90°

coupler, said 90°

coupler being connected to a first and a second 180°

balun, said first and second 180°

balun being connected to said first, second, third and fourth radiating elements.

10. The antenna device according to claim 2, wherein a low noise amplifier or a power amplifier is mounted and connected to the circuitry on any of said first or second circuit carrier.