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Active integrated antenna with image reject mixer

Active integrated antenna (AIA) with image reject mixer (IRM ) operating at licenseless frequency of 2.4 GHz and intermediate frequency (IF) of 50 MHz is proposed. The opted IF of 50 MHz proves to yield satisfactory result in previous rather similar work. In this work, IRM is integrated with microst...

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Main Author: Chong, Wah Kiat
Format: Thesis
Language:English
Published: 2006
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.utm.my/id/eprint/257/1/ChongWahKiatMFKE2006.pdf
http://eprints.utm.my/id/eprint/257/
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spelling my.utm.2572018-02-19T06:53:24Z http://eprints.utm.my/id/eprint/257/ Active integrated antenna with image reject mixer Chong, Wah Kiat TK Electrical engineering. Electronics Nuclear engineering Active integrated antenna (AIA) with image reject mixer (IRM ) operating at licenseless frequency of 2.4 GHz and intermediate frequency (IF) of 50 MHz is proposed. The opted IF of 50 MHz proves to yield satisfactory result in previous rather similar work. In this work, IRM is integrated with microstrip patch antenna on the similar substrate to attain size, weight and cost reduction. The suitable substrate that serves as the common platform for all integral components is FR-4 with dielectric constant of 4.7 and thickness of 1.6mm. This AIA with IRM employs at different phase manipulation approach from that of the previous research in which the RF signal from the antenna feed is initially fed to an 1800 rat race coupler instead of a 900 coupler. Practically, this system is able to achieve image suppression with an isolation of approximately 20 dB between the image and desired frequency with 7 dBm LO drive at 2.35 GHz. The method of moment (MoM) and lumped circuit element simulation using Agilent’s ADS software are employed in this work. The integral components of AIA with IRM consist of microstrip 2-elements patch antenna, singly balanced schottky diode mixers, low pass filter, branchline 900 hybrid coupler lumped element 900 coupler and 1800 rat race coupler. The purpose and significance of this research emerge from the disadvantages that superheterodyne receiver presents in achieving image suppression. Relatively, IRM can reasonably suppress image at a lower size, weight, complexity and cost by means of phase cancellation. The design of AIA with IRM requires the achievement of balance between several inevitable design trade-offs involved. Generally, the trade-offs in this design are between size, simplicity and performance 2006-11 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/257/1/ChongWahKiatMFKE2006.pdf Chong, Wah Kiat (2006) Active integrated antenna with image reject mixer. Masters thesis, Universiti Teknologi Malaysia, Faculty of Electrical Engineering.
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Chong, Wah Kiat
Active integrated antenna with image reject mixer
description Active integrated antenna (AIA) with image reject mixer (IRM ) operating at licenseless frequency of 2.4 GHz and intermediate frequency (IF) of 50 MHz is proposed. The opted IF of 50 MHz proves to yield satisfactory result in previous rather similar work. In this work, IRM is integrated with microstrip patch antenna on the similar substrate to attain size, weight and cost reduction. The suitable substrate that serves as the common platform for all integral components is FR-4 with dielectric constant of 4.7 and thickness of 1.6mm. This AIA with IRM employs at different phase manipulation approach from that of the previous research in which the RF signal from the antenna feed is initially fed to an 1800 rat race coupler instead of a 900 coupler. Practically, this system is able to achieve image suppression with an isolation of approximately 20 dB between the image and desired frequency with 7 dBm LO drive at 2.35 GHz. The method of moment (MoM) and lumped circuit element simulation using Agilent’s ADS software are employed in this work. The integral components of AIA with IRM consist of microstrip 2-elements patch antenna, singly balanced schottky diode mixers, low pass filter, branchline 900 hybrid coupler lumped element 900 coupler and 1800 rat race coupler. The purpose and significance of this research emerge from the disadvantages that superheterodyne receiver presents in achieving image suppression. Relatively, IRM can reasonably suppress image at a lower size, weight, complexity and cost by means of phase cancellation. The design of AIA with IRM requires the achievement of balance between several inevitable design trade-offs involved. Generally, the trade-offs in this design are between size, simplicity and performance
format Thesis
author Chong, Wah Kiat
author_facet Chong, Wah Kiat
author_sort Chong, Wah Kiat
title Active integrated antenna with image reject mixer
title_short Active integrated antenna with image reject mixer
title_full Active integrated antenna with image reject mixer
title_fullStr Active integrated antenna with image reject mixer
title_full_unstemmed Active integrated antenna with image reject mixer
title_sort active integrated antenna with image reject mixer
publishDate 2006
url http://eprints.utm.my/id/eprint/257/1/ChongWahKiatMFKE2006.pdf
http://eprints.utm.my/id/eprint/257/
_version_ 1643643054922399744
score 13.211869

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