Antenna unit having electrically steerable transmit and receive beams
First Claim
1. A multilayer antenna unit having electrically steerable transmit and receive beams comprising:
- a first array antenna;
a second array antenna;
a first layer having a plurality of antenna elements arranged in a first lattice wherein said first lattice forms a portion of said first array antenna, said first layer for transmitting radio signals;
a second layer having a plurality of antenna elements arranged in a second lattice wherein said second lattice forms a portion of said second array antenna for receiving radio signals;
a third layer of an electrically conductive material forming a ground plane;
a first dielectric layer arranged between said first and second layer;
a second dielectric layer arranged between said second and third layer; and
wherein said first and second array antenna are embedded in said antenna unit in a periodical multi-layer structure where said first lattice is interleaved with said second lattice, and further wherein said transmit and receive beams of said antenna unit have the capability of pointing in substantially equal directions in substantially equal scan volumes.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to an antenna unit (101) capable of operating in a satellite communication mode. The antenna unit (101) comprises interleaved circular patches for transmitting (102) and receiving (103) radio signals periodical arranged in a first and a second layer. The patches for transmitting (102) in the first layer are arranged in a first lattice (104) and the patches for receiving (103) in the second layer are arranged in a second lattice (105). The first lattice (104) is interleaved with the second lattice (105). Every other patch for transmitting (102) in the first layer has a corresponding patch for receiving (103) in the second layer, where each of the patches for receiving (103) are arranged in such a way that a center axis of the patches for receiving (103) coincide with a center axis of the corresponding patch for transmitting (102).
261 Citations
27 Claims
-
1. A multilayer antenna unit having electrically steerable transmit and receive beams comprising:
-
a first array antenna; a second array antenna; a first layer having a plurality of antenna elements arranged in a first lattice wherein said first lattice forms a portion of said first array antenna, said first layer for transmitting radio signals; a second layer having a plurality of antenna elements arranged in a second lattice wherein said second lattice forms a portion of said second array antenna for receiving radio signals; a third layer of an electrically conductive material forming a ground plane; a first dielectric layer arranged between said first and second layer; a second dielectric layer arranged between said second and third layer; and wherein said first and second array antenna are embedded in said antenna unit in a periodical multi-layer structure where said first lattice is interleaved with said second lattice, and further wherein said transmit and receive beams of said antenna unit have the capability of pointing in substantially equal directions in substantially equal scan volumes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A multilayer antenna unit having electrically steerable transmit and receive beams comprising:
-
a first array antenna; a second array antenna; a first layer having a plurality of antenna elements arranged in a first lattice wherein said first lattice forms a portion of said first array antenna, said first layer for receiving radio signals; a second layer having a plurality of antenna elements arranged in a second lattice wherein said second lattice forms a portion of said second array antenna, said second layer for transmitting radio signals; a third layer of an electrically conductive material forming a ground plan; a first dielectric layer arranged between said first and second layer; a second dielectric layer arranged between said second and third layer; and wherein said first and second array antenna are embedded in said antenna unit in a periodical multi-layer structure where said first lattice is interleaved with said second lattice, and further wherein said transmit and receive beams of said antenna unit have the capability of pointing in substantially equal directions in substantially equal scan volumes. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
Specification