Nancy Friedrich

Microwaves & RF

Nancy Friedrich began her career in technical publishing in 1998. After a stint with sister publication Electronic Design as Chief Copy Editor, Nancy worked as Managing Editor of Embedded Systems Development. She then became a Technology Editor at Wireless Systems Design, an offshoot of Microwaves & RF. Nancy has called the microwave space “home” since 2005.

Microwave Legends 2007
Through their insightful creativity and research, these five historical figures have shaped and in many ways spawned the microwave industry.
Wideband Downconverter RF IC Covers 800 To 2700 MHz
Many new products simultaneously target third-generation (3G), fourth-generation (4G), and WiMAX infrastructure. For example, a wideband-downconverter RF integrated circuit (RF IC) now claims to satisfy almost all wireless-infrastructure ...
Jitter Test Instrument Offers Crest Factor Above 18 dB
As serial buses advance through faster edges and narrower unit intervals, more pressure is being placed on the design, compliance testing, and debug processes. The J7000 Jitter Test System promises to alter serial signal streams by injecting ...
Chip Capacitors Are Valued At 10 To 220 pF At 4000 VDC
Unlike standard electrolytic Capacitors, the Type EDL electric double-layer supercapacitor can actually act as a battery. By leveraging this feature, designers can avoid the environmental or hazardous-material issues associated with batteries. ...
Digital Radio Test Set Satisfies TETRA And P25
To stay current with varied and evolving communications standards, many digital test sets are now rooted in software-defined-radio (SDR) technology. As a result, users can easily expand and upgrade their capabilities. The 3920 Radio Test Set, ...
Active Cable-Mesh Main Reflector Proves Feasible
Following the completion of the Atacama large-millimeter/submillimeter array (ALMA), an initiative emerged to develop a radio telescope that would provide a two-orders-of-magnitude increment in sensitivity over existing facilities at ...
All-Capacitor Pi Matching Network Utilizes Series Element's ESL
At lease two reactive elements are needed to match a lossless network to an arbitrary load. Yet two elements alone will not provide simultaneous control over the bandwidth and degree of match. Three-element matching networks, such as Pi- and ...
X-Band GaN HEMT Boasts 50 W Output Power
Many RF manufacturers are turning to galliumnitride (GaN) for its promise of higher power. GaN high-electron-mobility-transistor (HEMT) amplifiers, for example, may be capable of attaining significantly higher gain and output power than GaAs ...
WiMAX Circulators Manage 0.20 dB Insertion Loss
WIMAX is on the rise with networks set to deploy in cities across the globe. To support this buildup, a family of single-junction surface-mount circulators is well suited for various WiMAX applications. The MAFR-000229000001, MAFR-000050-5S4C1T, ...
VNA Options Enhance Amplifier Measurements
Characterizing a high-frequency amplifier can be rather tricky. In fact, just configuring a network analyzer for the right set of measurements can be challenging. To ease this process, Rohde & Schwarz (Hants, United Kingdom) offers a 17page-long ...
Hawaii Gets A Thumbs Up After All
Rather than being a black mark on MTT-S, the Honolulu location might have actually been a blessing.
Vector And Spectrum Analyzers Merge
To perform their jobs, RF engineers often rely on both spectrum analyzers and vector network analyzers (VNAs). To make it easier for designers to leverage these instruments, the ZVL series merges a full-featured VNA with a spectrum analyzer in ...
RF Immunity Testing Helps To Maintain Quality Performance
Unwanted signals are proliferating in part because of the popularity of GSM cell phones. Such RF signals can disrupt the operation of electronic circuits without adequate RF noise-rejection capabilities. To guarantee the satisfactory operation ...
Portable Handheld Analyzers Span 2 To 1600 MHz
Interoperability continues to be a problem for homeland-security, public-safety, and other agencies. To assuage this problem, the S311D/S312D Site Master cable and antenna analyzers combine a frequency of 2 to 1600 MHz in a portable, rugged ...
Microstrip Patch Antenna Populates CPW Stub With MEMS Capacitors
Using radio-frequency microelectromechanical-systems (MEMS) technology, a tunable frequency microstrip patch antenna has been developed. It consists of a patch antenna loaded with a coplanar-waveguide (CPW) loading section, which is attached to ...
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