SUBSTRATE INTEGRATED WAVEGUIDE HORN ANTENNA
Embodiments are directed to a substrate integrated waveguide (SIW) antenna structure comprising: a first layer configured to route a signal, at least a second layer configured for antenna use coupled to the first layer, and a SIW antenna flared in the E-plane. Embodiments are directed to a method comprising: fabricating a first layer configured to route a signal, fabricating at least a second layer configured for antenna use, coupling the first layer and the at least a second layer, and flaring a substrate integrated waveguide (SIW) antenna in the E-plane.
1 . A substrate integrated waveguide (SIW) antenna structure comprising:
a first layer configured to route a signal;
at least a second layer configured for antenna use coupled to the first layer; and
a SIW antenna flared in the E-plane.
2 . The SIW antenna structure of claim 1 , wherein the signal comprises a 60 GHz signal.
3 . The SIW antenna structure of claim 1 , wherein the SIW antenna occupies a plurality of layers and extends in a direction perpendicular to a plane of a circuit substrate in a stair-cased fashion.
4 . The SIW antenna structure of claim 1 , wherein the first layer is implemented as a microstrip line feeding structure, and wherein the first layer is substantially thinner than the at least a second layer.
5 . The SIW antenna structure of claim 4 , wherein the microstrip line feeding structure is configured to directly feed the SIW antenna.
6 . The SIW antenna structure of claim 1 , further comprising:
a plurality of matching posts;
wherein a position of the matching posts is tunable in three dimensions to provide a specified bandwidth and radiation pattern.
7 . The SIW antenna structure of claim 1 , wherein the SIW antenna is flared in the H-plane.
8 . A method comprising:
fabricating a first layer configured to route a signal;
fabricating at least a second layer configured for antenna use;
coupling the first layer and the at least a second layer; and
flaring a substrate integrated waveguide (SIW) antenna in the E-plane.
9 . The method of claim 8 , wherein the signal comprises a 60 GHz signal.
10 . The method of claim 8 , wherein the SIW antenna occupies a plurality of layers and extends in a direction perpendicular to a plane of a circuit substrate in a stair-cased fashion.
11 . The method of claim 8 , further comprising:
implementing the first layer as a microstrip line feeding structure;
wherein the first layer is substantially thinner than the at least a second layer.
12 . The method of claim 11 , wherein the microstrip line feeding structure is configured to directly feed the SIW antenna.
13 . The method of claim 8 , further comprising:
positioning a plurality of matching posts to provide a specified bandwidth and radiation pattern.
14 . The method of claim 8 , further comprising:
flaring the SIW antenna in the H-plane.
15 . The method of claim 8 , further comprising:
tuning a shape of the SIW antenna to minimize signal reflections.
16 . A transition structure comprising:
a microstrip line;
an antenna; and
a transition configured to connect the microstrip line to the antenna, wherein the transition comprises a taper that narrows from the antenna to the microstrip line.
17 . The transition structure of claim 16 , wherein the transition is configured as a linear taper.
18 . The transition structure of claim 16 , wherein the transition is configured as a curved taper.
19 . The transition structure of claim 16 , further comprising a plurality of guide walls configured to guide a wave in the transition.
20 . The transition structure of claim 16 , wherein the antenna is configured to operate at 60 GHz.
21 . The transition structure of claim 16 , wherein the antenna is at least one of a substrate integrated waveguide (SIW) antenna and a horn antenna.
22 . A structure comprising:
a microstrip transition;
a horn antenna coupled to the microstrip transition; and
a plurality of guide walls configured to guide a wave in a transition between the microstrip transition and the horn antenna.
23 . The structure of claim 22 , wherein the microstrip transition is coupled to a microstrip line, and wherein the microstrip transition comprises a curved taper.
24 . A method comprising:
identifying a transition from a microstrip line to a substrate integrated waveguide (SIW) horn antenna structure configured to operate at 60 GHz; and
selecting a geometry for the transition.
25 . The method of claim 24 , further comprising:
incorporating a plurality of guide walls into the transition to guide a wave in the transition.
26 . The method of claim 25 , further comprising:
tuning the angle, position, and the number of guide walls to obtain a specified bandwidth.