This paper presents a wideband circularly
polarized antenna for small satellites to be used with NASA Near-
Earth Networks (NEN). This single-fed stacked antenna utilizes
the electromagnetic coupling concept and is usable with a duplex
transceiver. The circularly-polarized antenna employs hybrid
perturbations on stacked patches and covers NASA NEN’s both
uplink and downlink frequencies, thus replacing the conventional
requirement of two separate antennas. It provides a notable wide
axial ratio (AR) < 3 dB bandwidth of 1.16 GHz from 7.02 GHz to
8.18 GHz (15.3%). The optimized patch dimensions provide
34.6% VSWR ~ 2 bandwidth from 6,525 MHz to 9,253 MHz. The
overall antenna size is 17 mm × 17 mm × 6.6 mm, and has a peak
gain of 7.9 dBi. This proposed antenna will overcome solar cell
space constraint on smallsat’s outer wall by saving at least 50%
area required by the conventional two-antenna method.
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A Wideband Stacked Patch-Patch Antenna with Hybrid Perturbations for Circular Polarization
- Award ID(s):
- 1655280
- PAR ID:
- 10323104
- Date Published:
- Journal Name:
- 2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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