advertisment Advertisement
This ad will close in  seconds. Skip now
advertisment Advertisement
advertisment Advertisement
advertisment Advertisement
advertisment Advertisement

Industry News

RF to Light 100 Update

August 7, 2006
The RF to Light 100 changed 0% last week, YTD 0% at 2115. Network Systems and RF Semiconductor stocks lost ground again. The market remained oversold. Short selling increased from 3.7 to 4.2% average. Average P/E plunged to 33 - last seen in 3Q05 and 1Q03. It appears that...
Read More

Ask Harlan: Question of the Month - September 2006

August 7, 2006
Published September 01, 2006 In an effort to better combine the editorial content of our magazine with our newly developed and retooled on-line presence, we have decided to expand Harlan's RF and microwave engineering advice into a monthly feature that appears in Microwave Journal. Harlan has selected one question...
Read More

Characterization of Ultra-wideband Bow-tie Antennas for Ground Penetrating Radar Systems

In this article, two ultra-wideband (UWB) bow-tie antennas, designed for ground penetrating radar (GPR) applications, are characterized by both numerical analysis and experimental measurements. The geometry and the different materials of the feed and t...
August 7, 2006
In recent applications of telecommunications and remote sensing at radio, microwave and terahertz frequencies, the exploitation of ultra-wideband (UWB) antennas is growing steadily. 1 In subsurface prospecting, for example, they can provide higher imaging resolution and better target characterization. 2 The design and analysis of such high performance antennas...
Read More

Triple-band UMTS Handsets Drive RF Components

August 4, 2006
Strategy Analytics released, "Popular UMTS Multi-band Combinations: Implications for Radio Components," from its RF and Wireless Components Service, which assists radio component companies in targeting their design resources to expected market trends. The need for handsets that can operate in UMTS and legacy GSM modes across multiple regions will...
Read More

DesignAdvance Enters China PCB Design Market

August 4, 2006
DesignAdvance™ Systems Inc., a developer of innovative design automation software for users of EDA and MCAD tools, announced its entrance into the Chinese PCB design market with the appointment of Shenzhen EDA Technologies Co. Ltd. as a distribution partner. Shenzhen EDA Technologies, a dedicated professional engineering software company based...
Read More

Rigorous Analytical Expressions for the Electromagnetic Parameters of Rectangular Coaxial Couplers with Circular and Square Inner Conductors

<p>This article presents a set of accurate closed-form formulas for the primary parameters (inductance [L] and capacitance [C] matrices) and the impedances (Z<span class="storybodysubscript">oe</span>, Z<span class="storybodysubscript">oo</span>) of th...
August 4, 2006
The electrical properties of a loss-less coupler, using TEM mode coupled lines, can be described in terms of even- (Z oe ) and odd- (Z oo ) mode impedances and its primary parameters [L] and [C] matrices 2 where L o and C o are the proper inductance and...
Read More

A Dual-band Branch-line Coupler Using Quasi-composite Right/Left-handed Transmission Lines

A quasi-RH/LH dual-band 3 dB branch-line coupler (BLC) constructed in microstrip form is proposed. The designed BLC circuit replaces the conventional chip inductors in the coupler arms with microstrip stubs for easier circuit integration and lower fabr...
August 4, 2006
Branch-line couplers (BLC) are widely used as 90° signal dividers in microwave and millimeter-wave circuits. A BLC can provide two quadrature-phased signals from a single local oscillator for use in image rejection mixers. 1 It can be used as part of the feeding network for antennas to produce circularly...
Read More

Microwaves in Europe: Markets and Technologies

In 2006, how strong is the European microwaves industry? Is it responding to the challenges of globalisation? Is the European Union united in its efforts? And what are the future technological trends?
August 3, 2006
The one certainty with technology is that it develops and changes at its own and often unpredictable pace. Crucial to determining the success and progression of any industry is how effectively it embraces new technology, exploits it and adapts it to the reality of the marketplace. The RF and...
Read More

IMS 2006: Another Record Breaker

August 3, 2006
Images from the 2006 IMS show. Ten years ago IMS 1996 set records as the largest IMS Symposium and Exhibition to date. San Francisco once again proved a great draw for our industry and its many engineers. IMS 2006 was indeed another record breaker, with over 12,000 total attendees...
Read More

Applications of CE Alloys in Defense, Aerospace, Telecom and Other Electronic Markets

August 3, 2006
The advantageous physical properties and manufacturing characteristics of Osprey Controlled Expansion (CE) alloys are currently being exploited in a variety of electronic applications. The ability to tailor the coefficient of thermal expansion (CTE) values of these alloys to ceramic circuit boards and components operating at high frequencies, combined with...
Read More

Sign-In

Forgot your password?

No Account? Sign Up!

Get access to premium content and e-newsletters by registering on the web site.  You can also subscribe to Microwave Journal magazine.

Sign-Up

advertisment Advertisement