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ISSUE DATE: APRIL 2003 | |
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April 2003 - In This Issue [Cover Story] On-Wafer Probes Test Silicon ICs To 100 GHz Silicon-device technologies were once considered appropriate for digital and/or RF applications at best. But with the steady development of such advanced technologies as silicon complementary metal-oxide semiconductor (CMOS) and silicon-germanium... — Jack Browne [News] Linearizer Hikes PA Efficiency Analog approaches may reap huge benefits for digital communications systems. That is the intention of the engineers at Cigma Technologies (Allendale, NJ), who have developed a unique analog predistortion-linearizer (PDL) circuit that promises to... — Jack Browne [Design Features] Meld Load-Pull Tests With EDA Tools Power-amplifier (PA) designers are often hampered in their use of electronic-design-automation (EDA) simulation tools because of deficiencies in large-signal models. Typically, an engineer must augment EDA tools with measured data before... — Richard L. Carlson [Design Features] Reducing ESR Measurement Errors Capacitor and inductor improvements have resulted in lower equivalent-series-resistance (ESR) values for these circuit elements. In turn, measurements of ESR for capacitors and inductors have become even more difficult. ESR measurements errors are... — Gregory L. Amorese [Product Technology] Veteran Cap Supplier Unleashes New TCXOs Temperature-compensated crystal oscillators (TCXOs) and voltage-controlled TCXOs (VCTCXOs) serve as frequency and time references in a wide range of systems, including in cellular and personal-communications-services (PCS) systems. A company once... — Jack Browne [Product Technology] Compact DDS Silences Spurious And Phase Noise Direct-digital synthesis (DDS) has been an appealing commercial and military source technology for over a decade. One limitation, however, has been traditionally poor spurious performance, as a function of the bit resolution of the DDS and its... — Scott Hardy , et al. [Product Technology] 4 x 8 Switch Matrix Serves Smart Antennas Cell-site capacity is a key factor for the economic health of cellular-communications service providers. One of the most promising, though technically difficult, ways to increase capacity (and implement new services) is through the use of "smart"... — Tom Howard [Editorial] The Military Is Important (Again) Military electronics is once again an important component of high-frequency business. News about the conflict in Iraq dominates broadcast airwaves and newsprint, as Coalition forces push for a speedy end to the war. This conflict is similar to the... — Jack Browne |
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