NDLI: Equatorial F3-layer observations during the winter of 2004

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2012 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE)

2010 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE)

2007 Asia-Pacific Conference on Applied Electromagnetics

2005 Asia-Pacific Conference on Applied Electromagnetics

2005 Asia-Pacific Conference on Applied Electromagnetics (IEEE Cat. No. 05EX1185)

Conference committee

Table of contents

Adaptive Integral Method for Electromagnetic Scattering and Antenna Radiation

3D EM in South East Asia - state of the art and future perspective

New Types of Microstrip Filters Using Defected Grounds

Accurate analysis and design of circularly polarized dual-feed microstrip array antenna using multiport network model

Dual band patch antenna design using modified surface boundary hybrid FEM-FDTD technique

Dual band microstrip antenna for wireless LAN application

Direct conversion receiver with active integrated antenna

Comparative radiation performance of different feeding techniques for a microstrip patch antenna

Microstrip dipole antenna analysis with different width and length at 2.4 GHz

The studies on different scaling factor for microstrip antenna design

Sierpenski gasket monopole antenna design

Optimizing model of shipboard HF antenna placement

Microstrip Sierpinski carpet antenna design

Wideband Sierpinski carpet monopole antenna

Small aperture radial waveguide slot array antenna design for indoor Bluetooth application

4-port Butler matrix for switched multibeam antenna array

A comparative study of small antenna efficiency measurements

A compact dual-polarized aperture-coupled stacked patch antenna for GSM900 MHz

Application of liquid crystal technology for electronically scanned reflectarrays

Compact printed square meander loop antenna for a Bluetooth headset

CT-shaped microstrip antenna for dual-operation

Experimental investigations of microstrip Sierspinski-Gasket fractal antenna

Design characteristics for node-B RF transmitter: a case study

Detailed interference and compatibility analysis of two GEO satellites located at 1/spl deg/ orbital separation

Microstrip U-shaped dual-band antenna

Simulation of wideband inverted suspended patch antenna

Analysis of rain cell size distribution from meteorological radar data for rain attenuation studies

Detection of ionospheric perturbation after Northern Sumatra earthquake on 26 December 2004

Equatorial F3-layer observations during the winter of 2004

First ionospheric experimental campaign and observations at Fraser's Hill, Malaysia: results of vertical sounding

First ionospheric experimental campaign and observation at Fraser's Hill, Malaysia: total electron content (TEC) and scintillation measurements

Magnetic field reduction principles and options of primary overhead distribution lines

A time-domain method for shape reconstruction of a target with known electrical properties

Magnetic fields from a scaled down model transmission line - simulation and comparison to measurements

A new domain decomposition FDTD technique for simulating electromagnetic penetration into buildings

Impulse impedance tests on laboratory model earth electrode

Microwave detection of rubber filler using rectangular dielectric waveguide

Shielding effectiveness of rectangular metallic enclosures with apertures

Experimental study of the electromagnetic coupling to an enclosure via a wire penetration

Teaching of electromagnetics theory at Kolej Universiti Teknikal Kebangsaan Malaysia (KUTKM)

Conceptual implementation to access the extend of influence of lightning electromagnetic radiation on mobile radio communication

Preliminary study analysis on magnetic field exposure assessment in Selangor public schools

Preliminary design of wideband microwave amplifier using SMT package SiGe heterojunction bipolar transistor

Design of a 5.8 GHz directional coupler using electronics design automation tool

100 MHz-500 MHz, 1 Watt distributed power amplifier with discrete MOSFET devices

ADS simulation of 2 to 5 GHz IFM correlator

Gain comparison of low noise active integrated antenna (LNAIA) to the non-active integrated low noise antenna (on-AIA)

Application of microwave technology for home industry

Adaptive digital predistortion for power amplifiers used in CDMA applications

Design of a 5.8 GHz unfolded Lange coupler on the FR4 substrate

A novel broad-band band-stop resonator with compact size

Second harmonic suppression characteristic of a grooved bandpass filter

Design of folded half wave resonator

An 180 nm CMOS single inverter 2.4 GHz LC oscillator

Design of a 130 nm CMOS differential cross-coupled 5 GHz LC oscillator

Computer-aided synthesis of matching networks for multi-stage broadband microwave amplifiers

Tunable end-coupled ferroelectric-gap filters based on barium strontium titanate capacitors

C-band direct-coupled cavity waveguide filter design using MathCAD software

New neural modeling of miniature X-band branch-line coupler

The design and development of a 1.4 GHz VCO

Harmonic cancellation of parallel-coupled bandpass filter with transmission zero realign method

Miniaturized internally-coupled hairpin-line bandpass filter

Parameter based investigation: the design of node-B high power PA

High-speed domino logic design

The design of integrated monolithic transformer for power IC

A 13.56 MHz RFID system

Design and modeling of metal finger capacitors for RF applications

Modeling and simulation of sol-gel thin films for monolithic microwave integrated circuit applications

Nonlinear analysis for performance characterization of a photoparametric amplifier

The design of high speed UART

Tunable level-shifter/buffer for dual supply systems and low-power clock-tree design in deep-submicron application

Analytical study of the characteristic dispersion equations in elliptical step-index fiber with helical winding

Layout dependence effect on high speed CMOS transistor leakage current

An optical transceiver design for analog transmission using direct intensity modulation

Low power consumption thermooptic switch using polymers

Space-time-frequency coded-OFDM employing adaptive multiple antenna selection over WLAN fading channels

Secure speech communication over public switched telephone network

Carrier position CTB evaluation and reduction using unique channel separation

Analysis and receiving of downlink GSM signal using spectrum analyzer

A capable location prediction and bandwidth reservation scheme for multimedia in mobile cellular networks

Quality of service for mobile IP services in wireless network

IP packet size to maximize throughput of wireless ATM link layer

Iterative data detection and pilot symbol assisted-channel estimation for single-parity check-product coded multiple antennas system

Performance evaluations of ICI cancellation schemes in OFDM systems

Indoor propagation channel models for WLAN 802.11b at 2.4 GHz ISM band

Development of software planning tools for an intelligent traffic light wireless communication link using 5.8 GHz WLAN

Real time medical data acquisition over wireless ad-hoc network

Asia-Pacific Conference on Applied Electromagnetics, 2003. APACE 2003.

Equatorial F3-layer observations during the winter of 2004

Content Provider	IEEE Xplore Digital Library
Author	Zain, A.F.M. Jaafar, M.K.
Copyright Year	2005
Description	Author affiliation: Wireless & Radio Sci. Centre, Kolej Univ. Teknologi Tun Hussein Onn, Malaysia (Zain, A.F.M.; Jaafar, M.K.)
Abstract	Vertical ionospheric soundings were carried out in the equatorial zone above Pant Raja, district of Batu Pahat, Johor, Malaysia (lat. 1/spl deg/ 86' N, long. 103/spl deg/ 8' E) for the winter months of December 2004, January and February 2005. The vertical digital sounder is used to measure and to determine the critical frequency, maximum usable frequency and electron density at any given time. The presence of the F3-layer is quite prominent compared with mid- and high-latitude ionosphere. The greatest occurrence of the F3 layer during the winter of 2004 is in the period between 1100 LT to 1300 LT (13.3%) while the least is between 0700 LT to 0900 LT (1.2%). The mean critical frequency for the F3 layer is about 8 MHz (foF3) while the mean virtual height for the F3 layer is about 600 km (h'F3). The maximum virtual height of the F3 layer (h'F3) recorded is about 900 km on the 7th February 2005 at 1800 LT while the minimum is about 420 km on the 5th February 2005 at 1300 LT.
File Size	2845775
File Format	PDF
ISBN	0780394313
DOI	10.1109/APACE.2005.1607790
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-12-20
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	digisonde Density measurement critical frequency equatorial ionosphere F3-layer Time measurement Frequency measurement Sun virtual height Ionization Electromagnetic scattering Atmosphere Electromagnetic propagation Ionosphere Electrons
Content Type	Text
Resource Type	Article

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