Future developments and technology options in cellular phone power amplifiers: from power amplifier to integrated RF front-end module

2002 ◽  
Author(s):  
R. Jos
Keyword(s):  
Power Amplifier ◽  
Power Amplifiers ◽  
Cellular Phone ◽  
Future Developments ◽  
Front End ◽  
Rf Front End ◽  
Front End Module

An LTCC Based Filter and Front End Module using Heterogeneous Dielectrics

2006 ◽  
Vol 3 (3) ◽  
pp. 129-135 ◽  
Author(s):  
Jun Chul Kim ◽  
Dongsu Kim ◽  
Hyun Min Cho ◽  
Jong Chul Park ◽  
Nam Kee Kang
Keyword(s):  
Power Amplifier ◽  
Bandpass Filter ◽  
Wave Length ◽  
Signal Delay ◽  
Ceramic Substrates ◽  
Front End ◽  
Quarter Wave ◽  
Front End Module ◽  
Signal Delay Time ◽  
Shunt Capacitor

This paper presents a multi-layered bandpass filter (BPF) and a power amplifier module (PAM) integrated with a SAW duplexer based on heterogeneous ceramic substrates. The heterogeneous substrates are composed of two different ceramic layers with εr = 7.4 and 17.5 in order to take advantage of their own properties. In the PAM substrate, a DC blocking capacitor and a shunt capacitor for an output matching network of a power amplifier are embedded with a material of εr = 17.5 to reduce occupied areas of the capacitors. On the other hand, a quarter-wave-length stripline and RF chokes are realized with a material of εr = 7.4 to reduce signal delay time. In the multi-layered BPF, a coupled stripline and a high shunt capacitor are embedded with materials of εr = 7.4 and 17.5, respectively, resulting in improved spurious characteristics.

Monolithic Multiband MEMS RF Front-End Module for 5G Mobile

2020 ◽  
pp. 1-9
Author(s):  
Humberto Campanella ◽  
You Qian ◽  
Christian O. Romero ◽  
Jen Shuang Wong ◽  
Joan Giner ◽  
...  
Keyword(s):  
Front End ◽  
Rf Front End ◽  
Front End Module

Development of Wideband Power Amplifier for RF / Microwave Front-End Subsystem

2014 ◽  
Vol 68 (3) ◽  
Author(s):  
Z. Zakaria ◽  
M. F. M. Fadzil ◽  
A. R. Othman ◽  
A. Salleh ◽  
A. A. M. Isa ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Power Amplifiers ◽  
Active Device ◽  
Linearization Technique ◽  
Advantages And Disadvantages ◽  
Front End ◽  
Rf Microwave

This paper reviews the Wideband Power Amplifier (PA) that has been developed since 1990. Several journals had been discussed in this paper covers few topics such as Characterization of Power Amplifiers, Power Amplifier Architecture and Linearization Technique. Advantages and disadvantages of the technique used had been highlighted as well as the summary of those cases been compiled in the table form for comparison purposes. Power Amplifier is one of the important parts in transmitter. However, when involve transistor as an active device, it is important to ensure that the signals are stabilized and transmitted at higher efficiency. This leads to the proposal of a new design of Wideband Power Amplifier based on the concept of the multiplexer.

scholarly journals 77‐ GH z mmWave antenna array on liquid crystal polymer for automotive radar and RF front‐end module

ETRI Journal ◽  
2019 ◽  
Vol 41 (2) ◽  
pp. 262-269 ◽  
Author(s):  
Sangkil Kim ◽  
Amin Rida ◽  
Vasileios Lakafosis ◽  
Symeon Nikolaou ◽  
Manos M. Tentzeris
Keyword(s):  
Liquid Crystal ◽  
Antenna Array ◽  
Liquid Crystal Polymer ◽  
Automotive Radar ◽  
Front End ◽  
Rf Front End ◽  
Crystal Polymer ◽  
Front End Module
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