Technical Articles

Radar Antenna Design Engineers Require Cost-Effective Solutions for Their Antenna PCBs
Meteorwave M4000M, ADAS, PPE, Copper Foil, Insertion Loss
VIEW ARTICLE

Microstrip-fed Wideband Circularly Polarized Printed Antenna
RF-35, symmetrical dipole, circular polarization, printed dipole antenna, slot antenna
VIEW ARTICLE (Oct. 2010)

Mercurywave 9350 High Frequency, Low Loss resin system
Mercurywave 9350, insertion loss
VIEW ARTICLE

In-silico hyperthermia performance of a near-field patch antenna at various positions on a human body model
RF-35, 434 MHz, RF hyperthermia treatment, near field, patch antenna
VIEW ARTICLE (May 13, 2011)

Omnidirectional circularly-polarised microstrip patch antenna
RF-35, omnidirectional, circularly-polarised, CP, patch antenna
VIEW ARTICLE (May 24, 2012)

Ultra-Wideband Antenna Array Design for Target Detection
TLC-30, UWB, planar antenna, 3.1 - 10.6 GHz
VIEW ARTICLE (2012)

Retrodirective Rotman Lens Antenna
RF-60A, Rotman Lens antenna, 8 - 12 GHz
VIEW ARTICLE

Planar High-Gain WLAN PCB Antenna (Strategies for Designing Microwave Multilayer Printed Circuit Boards Using Stripline Structures)
TLY, antenna gain, directive antennas, microstrip antenna, WLAN, 5.6-6.3 GHz
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Considerations for EBG Loss in Antenna Applications
RF-35, 2.8 GHz slot antenna, EBG (electromagnetic band gap) structure
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Circular and Elliptical CPW-Fed Slot and Microstrip-Fed Antennas for Ultrawideband Applications
TLC-30, circular, coplanar waveguide (CPW), elliptical, microstrip, slot, ultrawideband (UWB)
VIEW ARTICLE (May 2006)

Miniaturization of microstrip patch antenna
TLY, microstrip patch antenna, electromagnetic bandgap substrate (EBG), 2.4 GHz
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A Wideband Printed Dipole Antenna With Optimised Tapered Feeding Balun For ISM and FWA Bands
TLY, wideband antenna, printed dipole, tapered balun, low-Q antenna, ISM/FWA
VIEW ARTICLE

Dual Polarized Microstrip Patch Antenna, Reduced in Size by Use of Peripheral Slits
TLY, microstrip patch antenna, size reduction
VIEW ARTICLE

Design optimisation of ring elements for broadband reflectarray antennas
RF-35, broadband reflectarray antenna
VIEW ARTICLE(Oct. 2003)

Microstrip Patch Antenna for GPS application
TLC-32, microstrip patch antenna, GPS
VIEW ARTICLE

Design and Analysis of an Electrically Steerable Microstrip Antenna for Ground to Air Use
TLY, polarized microstrip antenna, 2.45 GHz, avionics
VIEW ARTICLE(May 2002)

Design and Development of Printed Antenna Remote Units for Optically Distributed Mobile Communications
TLX-8, bandpass filter, antenna remote unit, ARU
VIEW ARTICLE (Dec. 1998)

Integrated Antennas for Millimetre-Wave Asset Tracking
Van Atta array antenna, mm-wave application, asset tracking, TLY-5
VIEW ARTICLE

Automotive

A Low Profile 77 GHz Three Beam Antenna For Automotive Radar
Automotive radar, microstrip patch antenna, TLY-5
VIEW ARTICLE

Coupler

Tri-Band RAT-Race coupler using resonators
TLX-8, resonator, rat-race coupler, tri-band, shaped structure
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Multiband Pi-shaped Structure with Resonators for Tri-band Wilkinson Power Divider and Tri-band Rat-Race Coupler
TLX-8; 1 GHz, 1.5 GHz, 2.5 GHz, multiband, Pi-shaped structure, resonator, Wilkinson power divider, rat-race coupler
VIEW ARTICLE

Complex Compensation of Coupled Line Structures in Inhomogeneous Media
RF-60A, coupler
VIEW ARTICLE

Inductively compensated parallel coupled microstrip lines
RF-35, RF-60, coupled-line resonator, Marchand balun, microstrip, parallel coupled filter, parallel coupled lines
VIEW ARTICLE

Environmental

Environmental Aspects of PTFE Based Laminates in Relation to "Halogen-Free"
PTFE laminate, halogen-free, fluorine
VIEW ARTICLE

Filter

Analysis and Design of Dual Band-Notched Interdigital Hairpin UWB Bandpass Filter
TLX-8; class AB power amplifier; dual-band; GaN HEMT; matching network; resonator
VIEW ARTICLE

Transmission zeros origin and behaviour in a Microwave Transversal Filter based on Planar Technology
RF-60A, bandpass transversal filter,
VIEW ARTICLE

Novel Compact Narrow-band Microstrip Dual-mode Resonator Filters for G3 Communication Systems
TLC-32, microstrip resonator, bandpass filter, UMTS,
VIEW ARTICLE

HDI Multilayer

Properties of low dielectric constant buildup materials containing micron sized hollow silica
VIEW ARTICLE

Microvia Reliability Using a Simple Test Vehicle - IPC APEX 2024.
fastRise, Microvia Reliability, HDI Microvia Fabrication, Low CTE
VIEW ARTICLE

High Speed Digital

AGC Extremely low loss halogen-free substrate materials
VIEW ARTICLE

Best Materials for 3-6 GHz DESIGN
N4000-13SI, N4000-13
VIEW ARTICLE

The formulating technology of extremely low loss PCB material for 112 224 Gbps without sacrificing reliability IPC APEX 2024
Extremely Low Loss, Low Df, Low Dk, Reliability
VIEW ARTICLE

Lead-Free Soldering

PWB Dielectric Substrates for Lead-Free Electronics Manufacturing
N4000-29, lead-free assembly, IST
VIEW ARTICLE

Evaluating Laminates for High Temperature Assembly
N4000-29, lead-free assembly, PCQR2, HATS
VIEW ARTICLE

Measuring Dielectric Properties/Laminate Characterization

Measuring Dielectric Properties and Surface Resistance of microwave PCBs in the K-band
TLY-5A, TLC-32, DK, dielectric constant (ε), df, loss tangent (tanδ), temperature dependance, -50°C to +70°C
VIEW ARTICLE

The Anisotropy of Dielectric Constant in TLY-5A Material
anisotropy, woven fiberglass, PTFE, Dielectric Constant, Er, TLY-5A, Bereskin
VIEW ARTICLE

The Impact of Conductor Surface Profile (Rrms) on Total Circuit Attenuation in Microstrip and Stripline Transmission Lines
Rrms, ED copper, RA copper, reverse treated copper, microstrip, stripline, conductor loss
VIEW ARTICLE

Effects of Surface Finish on HF Signal Loss Using Various Substrate Materials
Organic Solderability Preservative (OSP), Hot Air Solder Levelling (HASL), Electroless Nickel/Immersion Gold (ENIG), and Immersion Silver on ceramid filled and unfilled woven glass PTFE laminates, and FR4
VIEW ARTICLE

High Frequency Test Methods
1 MHz 2-fluid-cell test method, microstrip testing, "Bereskin" stripline test, full sheet resonance test method, X-band stripline resonator, modified stripline test, waveguide perturbation test method
VIEW ARTICLE

Der Einsatz von Basismaterial aus PTFE
(the German original of the above)
VIEW ARTICLE

Tuning the Dielectric Constant (Dk) of Electronic Materials to Meet the Demands of Any Application_IPC APEX 24
Low Dk, High Dk, Digital, RF, miniaturization, loss tangent, signal integrity, high density interconnect, HDI, Low Df
VIEW ARTICLE

mmWave

Multilayer/RF Digital

Strategies for Designing Microwave Multilayer Printed Circuit Boards Using Stripline Structures
TSM-DS, fastrise27, TSM-30, RF-35A2, stripline, pad registration, dimensional stability, impedance fluctuation, fusion bonding, thermal ageing, z-axis expansion, reliability, Young's modulus
VIEW ARTICLE

Trends in RF/Microwave & High Speed Digital and their effect on PCB Technology Requirements
TSM-30, fastrise
VIEW ARTICLE

Numerical Investigation of Vertical Contactless Transitions for RF Circuits
This paper presents some concepts for contactless transitions between different planar transmission lines. These types of transitions are important for use in e.g. multi layer designs. Another important reason to avoid galvanic connections at RF is that they may generate passive intermodulation products (PIM), which can be a serious problem in multifrequency systems. The investigated transitions operate in the extended GSM 900 band (880-960) MHz.
VIEW ARTICLE

Microvia Reliability Using a Simple Test Vehicle - IPC APEX 2024.
fastRise, Microvia Reliability, HDI Microvia Fabrication, Low CTE
VIEW ARTICLE

Oscillators

Antiphase Design for Balanced Oscillators
TLX-0, oscillator, MMIC
VIEW ARTICLE

Passive Intermodulation (PIM)

Current Progress in Phenomenology and Experimental Characterisation of Passive Intermodulation in Printed Circuits
passive intermodulation, PIM, base station antenna
VIEW ARTICLE

Distributed Sources of Passive Intermodulation on Printed Lines
TLX-9, passive intermodulation, PIM, base station antenna, copper foil
VIEW ARTICLE

Self-Induced Instability of passive intermodulation in microwave laminates
RF-30, passive intermodulation, PIM, base station antenna
VIEW ARTICLE

Effects of interface conditions and long-term stability of passive intermodulation response in printed lines
TLX-8, TLX-9, RF-30, passive intermodulation, PIM, long-term stability, base station antenna
VIEW ARTICLE

Passive intermodulation in printed lines: effects of trace dimensions and substrate
microstrip lines, passive intermodulation (PIM), forward PIM, reverse PIM
VIEW ARTICLE

Experimental Observations of Distributed Nonlinearity in Printed Lines
PTFE laminate, pcb nonlinearity, passive intermodulation (PIM)
VIEW ARTICLE

Mapping of Passive Intermodulation Products on Microstrip Lines
RF-30, microstrip lines, near field probing, nonlinearities, passive intermodulation (PIM)
VIEW ARTICLE

Passive Intermodulation in Finite Lengths of Printed Microstrip Lines
RF-30, distributed nonlinearity, intermodulation distortion, passive intermodulation (PIM), printed circuits
VIEW ARTICLE

Passive Intermodulation Generation on Printed Lines: Near-Field Probing and Observations
TLX-9, four-wave mixing, near-field probing, passive intermodulation (PIM), printed circuit board (pcb) material characterization, printed circuits
VIEW ARTICLE

Transmission/Reflection Measurement and Near-Field Mapping Techniques for Passive Intermodulation Characterisation of Printed Lines
RF-30, PIM, soldered microstrip launchers, contactless microstrip launchers
VIEW ARTICLE

Discrimination of Passive Intermodulation Sources on Microstrip Lines
TLX-9, RF-30, forward PIM
VIEW ARTICLE

Effect of Laminate Properties on Passive Intermodulation Generation
Passive intermodulation (PIM), forward PIM, reverse PIM
VIEW ARTICLE

Passive Intermodulation on Microstrip Lines
Passive intermodulation (PIM), forward PIM, reverse PIM
VIEW ARTICLE

Radio Links

RF Radio Links and LMDS Communications - Module Technology, Status and Trends
T/R module, RF radio link, mixed dielectric multilayer, PTFE base material, LMDS communication, packaging
VIEW ARTICLE

RFID

UWB Channel Sounding for Ranging and Positioning in Passive UHF RFID
RF-30, passive UHF RFID, tag antenna, reader antenna, 900 MHz
VIEW ARTICLE

Semiconductors & PTFE

GHz Flip Chip - An Overview
TLY, GHz flip chip assembly
VIEW ARTICLE

Wave Guide

Negative index media in microwave waveguide
RF-35, X-Band, microwave waveguide, negative index media, NIM
VIEW ARTICLE

Wearable Antenna

The Performance of On-Body Wearable Antennas in a Repeatable Multipath Environment
TLY-3, 2.45 GHz, wearable antenna, WBAN, on-body channels, multipath fading, Higher Mode Microstrip Patch Antenna (HMMPA)
VIEW ARTICLE

Compact slot-loaded patch antenna for 868 MHz Wireless Body Area Networks
TLY, ISM band, wireless body area network, WBAN, slot-loaded antenna
VIEW ARTICLE

In Situ Measurement of UHF Wearable Antenna Radiation Efficiency Using a Reverberation Chamber
TLY-3, 2.45 GHz, bodyworn antenna, on-body communication, wearable antenna radiation efficiency, WBAN
VIEW ARTICLE

Low-Profile Patch Antennas for Over-Body-Surface Communication at 2.45 GHz
TLY-3, RF-60A, body surface communication, shorted microstrip patch antenna (S-MPA), higher mode microstrip patch antenna (HM-MPA), 2.45 GHz
VIEW ARTICLE

Antennas and Propagation Considerations for Robust Wireless Communications in Medical Body Area Networks
TLY-3, RF-60A, wearable antennas, radio propagation, wireless networking, channel characterisation, 2.45 GHz
VIEW ARTICLE