A harmonic-suppressed high-efficiency class-F power amplifier with Elliptic-Function low-pass filter

2016 ◽  
Vol 70 (10) ◽  
pp. 1417-1425 ◽  
Author(s):  
Mohsen Hayati ◽  
Farzin Shama
Keyword(s):  
Power Amplifier ◽  
Elliptic Function ◽  
High Efficiency ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Class F

Q-Band Compact Driver and Power Amplifier MMICs Matched by ?-type Low-Pass Filter Using Lumped Elements

1998 ◽  
Author(s):  
Shin Chaki ◽  
Takao Ishida ◽  
Yasuharu Nakajima ◽  
Yoshinobu Sasaki ◽  
Yasuo Mitsui
Keyword(s):  
Power Amplifier ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Lumped Elements

scholarly journals Design of broadband Class EF power amplifier based on low-pass filter matching structure

2019 ◽  
Vol 16 (12) ◽  
pp. 20190264-20190264 ◽  
Author(s):  
Zhiwei Zhang ◽  
Zhiqun Cheng ◽  
Guohua Liu
Keyword(s):  
Power Amplifier ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Matching Structure

A Novel Rectenna Design with DGS Filters for Low-Power Energy Transfer

2014 ◽  
Vol 668-669 ◽  
pp. 787-790
Author(s):  
Shuang Bing Liu
Keyword(s):  
Energy Transfer ◽  
Low Power ◽  
High Efficiency ◽  
High Gain ◽  
Defected Ground Structure ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Received Power ◽  
Low Pass ◽  
Rectenna Design

A high efficiency rectifying antenna (rectenna) is designed at 5.8 GHz by using defected ground structure (DGS) filters for low-power energy transfer. A slot-coupled patch antenna is used as a receiving antenna with a high gain of 8.2dB. A DGS low-pass filter at the input port of the rectifying circuit is used to suppress the high order harmonics by 20dB. A DGS dc-pass filter is designed to block the AC signal from transmitting to the load. Both of the antenna and the filters are simulated by the full wave EM analysis software of HFSS. The RF-DC conversion efficiency of 51.8% is obtained when the received power is as low as 3mW.

Design of Excitation Source for Ultrasonic Guided Waves Based on DDS Technology

2014 ◽  
Vol 1049-1050 ◽  
pp. 674-677 ◽  
Author(s):  
Fen Ping Zhou ◽  
Yang Jiao ◽  
Hui Juan Duan
Keyword(s):  
Power Amplifier ◽  
Guided Waves ◽  
Guided Wave ◽  
Ultrasonic Guided Waves ◽  
Excitation Source ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Amplifier Circuit ◽  
Ultrasonic Guided Wave ◽  
Low Pass

According to the characteristics of ultrasonic guided wave inspection, An exciting power, used for exciting ultrasonic guided waves in pipeline is designed based on DDS and FPGA. The excitation source consists of FPGA, D/A conversion circuit, a low-pass filter circuit and power amplifier circuit. Constructing DDS based on FPGA as the controller and signal generator. Filter circuit and power amplifier circuit are designed in this paper. The experiment results show that the excitation source can have high voltage and high frequency output capability, and can generate desired signal type with a good accuracy to fit the requirements in practice. It can be conveniently used for pipeline ultrasonic guided wave detection.

Compact semilumped elliptic-function low-pass filter using microstrip meander line

2007 ◽  
Vol 49 (7) ◽  
pp. 1777-1779 ◽  
Author(s):  
Ju Gab Lee ◽  
Wu Seong Lee ◽  
Jae Jong Ryu ◽  
Yeon Kwan Moon ◽  
Joong Ho Jang ◽  
...  
Keyword(s):  
Elliptic Function ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Meander Line
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