Open Access. Powered by Scholars. Published by Universities.®

Electronic Devices and Semiconductor Manufacturing Commons™

Open Access. Powered by Scholars. Published by Universities.®

Selected Works

Switch

2010

Articles 1 - 2 of 2

Full-Text Articles in Electronic Devices and Semiconductor Manufacturing

Design And Modeling Of A 40w Microwave Switch In Qfn 2x2 Package, Chin-Leong Lim Nov 2010

Design And Modeling Of A 40w Microwave Switch In Qfn 2x2 Package, Chin-Leong Lim

Chin-Leong Lim

This paper describes a Quad Flat Non-lead (QFN 2x2) packaged PIN diode switch that is capable of handling Continuous Wave (CW) power up to 40W and WCDMA signal up to 10W. The target application is the Transmit arm of a Transmit Receive switch for cellular base-stations. The part was developed in response to this market segment's aggressive cost-cutting pressure. Prior designs relied on more expensive ceramic packages.

Go to article

Lna With A Bypass Mode Improves Overload Resistance For Mobile Tv, Chin-Leong Lim Mar 2010

Lna With A Bypass Mode Improves Overload Resistance For Mobile Tv, Chin-Leong Lim

Chin-Leong Lim

Objective: This paper describes how a Microwave Monolithic Integrated Circuit (MMIC) can be paired with an external PIN diode bypass switch in the implementation of a Low Noise Amplifier (LNA) with overload protection feature for mobile TV receiver applications.

Method: In the preliminary phase of the design, competing schemes for reducing LNA gain were reviewed and their respective cost-performance trade-offs were benchmarked against the customer’s set of requirements. Based on the selected design, a “proof of concept” prototype was then assembled and tested.

Material: The key components of this switch by-passable LNA were sourced from in-house product portfolio, consisting of …

Go to article