Innovative development approach yields inexpensive dual band frequency synthesizer for geosynchronous spacecraft

2000 ◽  
Author(s):  
John Besse ◽  
Charles Buondelmonte ◽  
Glenn Briceno ◽  
Peter Sabatini
Keyword(s):  
Frequency Synthesizer ◽  
Dual Band ◽  
Innovative Development ◽  
Band Frequency ◽  
Development Approach

A 2-V 2.3/4.6-GHz Dual-Band Frequency Synthesizer in 0.35->tex<$muhboxm $>/tex<Digital CMOS Process

2004 ◽  
Vol 39 (1) ◽  
pp. 234-237 ◽  
Author(s):  
W.-Z. Chen ◽  
J.-X. Chang ◽  
Y.-J. Hong ◽  
M.-T. Wong ◽  
C.-L. Kuo
Keyword(s):  
Frequency Synthesizer ◽  
Dual Band ◽  
Cmos Process ◽  
Digital Cmos ◽  
Band Frequency

scholarly journals A 0.18-$\mu$m CMOS Dual-Band Frequency Synthesizer With Spur Reduction Calibration

2013 ◽  
Vol 23 (10) ◽  
pp. 551-553 ◽  
Author(s):  
Yang-Wen Chen ◽  
Yueh-Hua Yu ◽  
Yi-Jan Emery Chen
Keyword(s):  
Frequency Synthesizer ◽  
Dual Band ◽  
Band Frequency

A dual-band frequency synthesizer for CMMB application with low phase noise

2010 ◽  
Vol 31 (9) ◽  
pp. 095001 ◽  
Author(s):  
Yu Peng ◽  
Yan Jun ◽  
Shi Yin ◽  
Dai Fa Foster
Keyword(s):  
Phase Noise ◽  
Frequency Synthesizer ◽  
Dual Band ◽  
Band Frequency ◽  
Low Phase Noise

A compact omnidirectional to directional frequency reconfigurable antenna for wireless sensor network applications

2021 ◽  
pp. 1-12
Author(s):  
Melvin Chamakalayil Jose ◽  
Radha Sankararajan ◽  
Balakrishnapillai Suseela Sreeja ◽  
Mohammed Gulam Nabi Alsath ◽  
Pratap Kumar
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Radiation Pattern ◽  
Antenna System ◽  
Wireless Sensor ◽  
Dual Band ◽  
Design Parameters ◽  
Pin Diodes ◽  
Band Frequency ◽  
Directional Radiation

Abstract In the proposed research paper, a novel compact, ultra-wideband electronically switchable dual-band omnidirectional to directional radiation pattern microstrip planar printed rectangular monopole antenna (PRMA) has been presented. The proposed antenna system has an optimum size of 0.26 λ0 × 0.28 λ0. A combination of radiators, reflectors, and two symmetrical grounds does place on the same layer of the rectangular microstrip PRMA. The frequency agility and the radiation pattern from omnidirectional to directional are achieved using two SMD PIN diodes (SMP1340-04LF). The directional radiation patterns with 180° phase shifts are achieved at the C-band frequency spectrum. The parametric study of the proposed antenna system was performed for different design parameters, and the antenna characteristics were analyzed. An antenna prototype is fabricated using the printed circuit board etching method by using RMI UV laser etching and cutting tools. The measurements of the proposed antenna are conducted in an anechoic chamber to validate the simulations. There are three states of operations due to two SMD PIN diodes being used in switching circuits. In state-I, the proposed antenna radiates at 6.185 GHz (5.275–6.6 75 GHz) in the Ф = 270° direction with a gain of 2.1 dBi, whereas in state-II, it radiates at 5.715 GHz (5.05–6.8 GHz) in the Ф = 90° direction with a gain of 2.1 dBi. In state-III, the antenna exhibits the X-band frequency with center frequency at 9.93 GHz (8.845–10.49 GHz), and the omnidirectional pattern offers a gain of 4.1 dBi. The features of the proposed antenna are suitable for high-speed wireless sensor network communication in industries such as chemical reactors in oil and gas and pharmaceuticals. It is also well suited for IoT and 5G-sub-6-GHz applications.

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