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More than ten years ago LDMOS transistors were introduced as a replacement of bipolar transistors for RF power applications [1,2]. Nowadays LDMOS technology is the leading RF power technology for base station applications, in particular for GSM-EDGE applications at 1 and 2 GHz, WCDMA applications at 2.2 GHz and more recently for WiMax applications around 2.7 GHz and 3.8 GHz.

This article describes the design and implementation of L-band frequency synthesizer based Local Oscillator to down-convert the uplink signal in a Telecommand Satellite Digital Receiver. An Integer-N PLL scheme was implemented to achieve a compact and low power module. The Local Oscillator when tested with the Receiver successfully achieved all performance parameters for satisfactory operation of the total system.

An optical photo lithography based 0.15μm GaAs PHEMT process and 2mil-substrate technology that enables high production throughput and low cost is described.

In this paper we present the new patent pending transmission line technology, PMTL™ that promises to revolutionize PCB and CMOS interconnects as well as improving the fidelity of testing connectivity and parallelism across the spectrum. We will compare the electrical performance of the PMTL™ with other similar transmission lines such as microstrip, stripline, and CPW and show that it provides superior performance with best signal integrity. We will also provide some photographs of the samples to demonstrate some possible applications of the PMTL™ technology for uFlex cable, and buses, wideband wafer probes, universal test sockets and as a means for ATE tower top simplification and providing high fidelity testing connecting.

This is the second of a two part series that discusses certain fundamentals in Voltage-Controlled Oscillator design.

An amplifier is one of the most common electrical elements in any system. The requirements for amplification are as varied as the systems where they are used.

Two trends are well underway in portable and handheld consumer electronic devices: shrinking form factors and the integration of multiple wireless technologies, such as Bluetooth™, cellular, GPS and Wi-Fi. These trends create challenges for device vendors and integrators by increasing the likelihood of RF noise and other system interactions that can undermine antenna performance.

This paper looks at the evolution of the mobile backhaul network and the very network that will eventually carry the increasing broadband traffic.

RF susceptibility or immunity test systems are often configured as dynamic hardware solutions that address more than one of the ever changing EMC standards. Automation by way of a software driven RF test system controller provides signal routing switch matrices and improves test reliability and engineering productivity.