advertisment Advertisement
advertisment Advertisement
advertisment Advertisement
advertisment Advertisement
Amplifiers

LDMOS Technology Solid-state Transmitter for a MIDS Communications System

July 12, 2007
/ Print / Reprints /
| Share More
/ Text Size+

Introduction

From the early 70’s, solid-state pulsed transmitters for primary and secondary radars (IFF-SSR) and also for communications systems (JTIDS) [1], have used silicon bipolar transistors. With such kind of devices, the common working operation mode was class C for optimizing the overall system efficiency and, consequently, reducing the power dissipation [2],. But during the last few years, thanks to the great investments made by the enterprises interested in the mobile phone market, new devices have been developed, the LDMOS transistors. These devices, allow alternative designs to the traditional ones. Most of the manufacturers of solid-state power devices (Philips, MACOM, Integra, APT,...) show datasheets of LDMOS amplifiers working in L-band with better characteristics than bipolar ones, mainly in power gain.

Address: Álvaro Blanco del Campo
Universidad Politécnica de Madrid
E.T.S. INGENIEROS DE TELECOMUNICACIÓN Edif :C- Despacho 419
Ciudad Universitaria s/n
28040 MADRID (SPAIN)

Post a comment to this article

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