Linearity Improved Doherty Power Amplifier Using Composite Right/Left-Handed Transmission Lines
نویسندگان
چکیده
منابع مشابه
High-Efficient Three-Way Doherty Amplifier with Improved Linearity
– In this paper the operation behavior of three-way Doherty amplifier is analyzed, including the efficiency and linearity. Amplifier is designed in the configuration with two quarter-wave impedance transformers in the output combining circuit with LDMOSFETs in carrier and peaking amplifies. The signals for linearization (the fundamental signals’ second harmonics-IM2 and fourth-order nonlinear s...
متن کاملModified Doherty Power Amplifier for Wider Band
Wireless communication system are developing rapidly, due to which new standards like WIMAX and 4G Long Term Evaluating(LTE) with a purpose of achieving high data rate result in high end applications such as high speed internet, video conferences and broadband width. These applications require mobile base stations at the transmitter as well as at receiver (T/R) to support features like multiple...
متن کاملDistributed Amplifiers with Composite Left/right-handed Transmission Lines
The use of so-called “composite left/right-handed transmission lines” in the design of distributed amplifiers is discussed using a simple model for the active device. The simplified analysis performed herein shows that it is possible to modify the frequency response of forward and reverse power gains, a significant development which could lead to innovative distributed amplifier designs. © 2006...
متن کاملHigh-Power Inverted Doherty Power Amplifier for Broadband Application
Abstract This paper presents a high-power inverted Doherty power amplifier for broader operational bandwidth. After analyzing two operation modes according to the load modulation of the Doherty power amplifier, the inverted Doherty structure was selected. In the design, the load impedances for optimum broadband characteristics at both the back-off and peak power levels. The Doherty power amplif...
متن کاملTunable Via-free Microstrip Composite Right/Left-Handed Transmission Lines Using MEMS Technology
In this contribution a tunable via-free microstrip composite right/lefthanded transmission line (CRLH-TL) is designed and simulated. To add tunability RF MEMS elements are implemented in the interdigital capacitors and stub inductors, which match the line impedance during tuning. The via-free design enables easy and low-cost fabrication. Additionally, tunable zero-order resonators (ZORs) using ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Microwave and Wireless Components Letters
سال: 2008
ISSN: 1531-1309
DOI: 10.1109/lmwc.2008.2001014