scholarly journals Koch Snowflake Fractal Antenna Design in the Deep Space Bands for a Constellation of Cubesat Explorers

2021 ◽  
Author(s):  
Orlando Francois Gonzales Palacios ◽  
Ricardo Erick Diaz Vargas ◽  
Patrick H. Stakem ◽  
Carlos Enrique Arellano Ramirez
Keyword(s):  
Power Consumption ◽  
Radiation Pattern ◽  
Low Power Consumption ◽  
Fractal Antenna ◽  
Deep Space ◽  
Koch Curve ◽  
Space Applications ◽  
Compact Antenna ◽  
X Band ◽  
Koch Snowflake

This paper presents the design and simulation of a Koch curve fractal antenna, developed according to the second iteration of the Koch snowflake fractal for S-band, C-band, X-band and Ku-band. The simulated antenna shows good performance for the operating frequencies and desirable gain, bandwidth and VSWR parameters. Being a compact antenna, it has a size, geometry and characteristics that go in accord with the CubeSat’s structure standards. The antenna was fabricated on a 1.5 mm thick FR-4 substrate. The VSWR achieved values are lower than 1.4 for the frequencies used (2.1 GHz to 2.4 GHz and 7.4 GHz to 8.9 GHz) with a simulated omnidirectional radiation pattern. A maximum gain of 6.8 dBi was achieved. As this antenna works optimally in the S, C and X bands, it is adequate for deep space applications, especially in low-power consumption systems. This approach would be ideal for constellations of Cubesat explorers.

scholarly journals Laser Technology in Photonic Applications for Space

Instruments ◽  
2019 ◽  
Vol 3 (3) ◽  
pp. 50 ◽  
Author(s):  
Denis Guilhot ◽  
Pol Ribes-Pleguezuelo
Keyword(s):  
Power Consumption ◽  
Electromagnetic Interference ◽  
Low Power Consumption ◽  
Space Application ◽  
The Moon ◽  
Space Applications ◽  
Laser Technology ◽  
Laser Technologies ◽  
History Of ◽  
The Many

The registered history of laser technologies for space application starts with the first laser echoes reflected off the Moon in 1962. Since then, photonic technologies have become very prominent in most technical development. Their presence has also dramatically increased in space applications thanks to the many advantages they present over traditional equivalent devices, such as the immunity against electromagnetic interference, as well as their efficiency and low power consumption. Lasers are one of the key components in most of those applications. In this review, we present an overview of the main technologies involving lasers that are currently deployed in space, before reviewing the requirements for lasers to be reliable in that environment before discussing the advantages and drawbacks of replacing standard technologies by newly developed photonic laser-based devices.

Low power consumption InAlAs-InGaAs-InP HBT SPDT PIN diode X-band switch

1993 ◽  
Vol 3 (10) ◽  
pp. 384-386 ◽  
Author(s):  
K.W. Kobayashi ◽  
L.T. Tran ◽  
S. Bui ◽  
J.R. Velebir ◽  
A.K. Oki ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Low Power Consumption ◽  
Pin Diode ◽  
X Band

scholarly journals A Triple-Cascode X-Band LNA Design with Modified Post-Distortion Network

Electronics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 546
Author(s):  
Cheng Cao ◽  
Xiuping Li ◽  
Yubing Li ◽  
Hongjie Zeng ◽  
Zhe Wang ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Noise ◽  
Low Power Consumption ◽  
Cmos Process ◽  
Noise Performance ◽  
Frequency Range ◽  
Nmos Transistor ◽  
X Band ◽  
Noise Amplifier ◽  
Intercept Point

This work proposes a novel linearized low noise amplifier (LNA) for X-band applications with flat power gain, low noise performance and enhanced linearity. In this study, a triple-cascode topology with dual-resonant network is utilized and a modified post-distortion network is introduced to improve the linearity. The LNA utilizes a subthreshold auxiliary NMOS transistor to reduce the nonlinearity with low power consumption. In addition, a methodology is proposed to predict the characteristic of the linearity performance of the proposed LNA with modified post-distortion network. With a small increase of 1 mW in power consumption due to the inclusion of the post-distortion network, the input intercept point IIP3 is improved and lies in the range of −3 to +8 dBm over the frequency range from 8 to 12 GHz. Implemented in Global Foundries 130 nm CMOS process, the LNA achieves a peak gain of 18 dB, and a 1.3 dB minimum NF over 8 to 12 GHz. The proposed LNA requires an area of 1.2 mm2 and a power of 18 mW.

scholarly journals Are two-dimensional materials radiation tolerant?

2020 ◽  
Vol 5 (11) ◽  
pp. 1447-1452
Author(s):  
Arkady V. Krasheninnikov
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Radiation Hardness ◽  
Low Power Consumption ◽  
Two Dimensional ◽  
Space Applications ◽  
Low Weight ◽  
Two Dimensional Materials ◽  
Radiation Tolerant

Due to their low weight, small size and low power consumption, two-dimensional materials are expected to be used in space applications. This brings about the issue of their radiation hardness, which is briefly discussed in this article.

A planar multiband Koch snowflake fractal antenna for cognitive radio

2015 ◽  
Vol 9 (2) ◽  
pp. 335-339 ◽  
Author(s):  
S. Sivasundarapandian ◽  
C.D. Suriyakala
Keyword(s):  
Cognitive Radio ◽  
Radiation Pattern ◽  
Spectrum Sensing ◽  
Impedance Matching ◽  
Fractal Antenna ◽  
Resonant Frequencies ◽  
Rectangular Slot ◽  
Multiband Antennas ◽  
Koch Snowflake ◽  
Good Agreement

This paper of lettering reveals about a modified Koch snowflake fractal multiband antenna for cognitive radio applications. Multiband antennas can be employed for spectrum sensing in cognitive radio. This new microstrip-modified Koch fractal antenna exhibits multiple actions in four dissimilar resonant frequencies at 3.2, 5.2, 6, and 9.5 GHz correspondingly that covers the frequency bands such as S, C, and X bands. Its multiband behavior was analyzed by designing and simulating in ADS EMDS software. Three iterations were carried out to study the performance of modified Koch snowflake fractal antenna. The outer ring and a small rectangular slot in the center of the antenna are used for 50 Ω impedance matching and to increase the number of resonant frequencies. The fractal antenna parameters such as gain, directivity, and its radiation pattern are also analyzed in this paper. The measured results show good agreement with the simulated results.

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