A design of dual-band balanced antenna structure operating in the 700 and 2600 MHz LTE bands is studied and investigated. The overall dimensions of the radiator are 50 × 18 × 7 mm allowing it to be easily concealed within mobile handsets. A broad-band balun is designed and integrated with the antenna handset in order to provide the feeding network and perform the measurements of the antenna rad...

A simple and analytical design methodology for a novel planar four-port structure to implement power divider (PD) or balun with variable power division is proposed in this paper. It consists of two different 3 dB branch-line couplers and one coupled-line phase shifter whose length can be changed to implement variable power division. Different from the previous designs, the power divider and bal...

@iR. ..... ........... VCCD PE ....... ........ Q ........... vcc GND ............ ........... ......... A radio frequency power amplijier for 4.8-5.7GHz has been realized in a 0.25 pm SiGe-bipolar technology. The balanced 2-stage push-pull power amplger uses two onchip transformers as input-balun and for interstage matching. Further it uses three coils for the integrated LC-output balun and th...

This paper will demonstrate the use of momentum to model on chip spiral inductors and transmission lines. The simulation results will be compared with measured data on these structures. These modeling techniques will be extended to include an on chip balun. A method of converting the results will be given so that compact efficient models can be created that can be included in any time domain or...

Religious harmony and tolerance in the village of “Pancasila” Balun, Turi, Lamongan, East Java, is a lesson for practice religious moderation which needs to be learned used as an example. All studies that already exist, principle Balun result nonformal education construction, even though talking about character building could not divided from role formal educational institutions. This research ...

There has been considerable progress in the construction of fundamental bandwidth limits and near optimal design realisations for several classes of passive linear electromagnetic wave devices, most notably for radar absorbent materials, antennas and meta-materials. This article seeks to place balun design on a similar footing, for an important class of baluns; in particular those which are ‘pe...

iv interferer combinations that lead to in-band distortion in wideband receivers, resulting in challenging linearity requirements. At the start of this research project, the noise canceling technique was identified as a suitable candidate to implement wideband receiver frontends. In a preceding research project a number of noise canceling topologies were generated. One of these topologies, the ...

This work presents an active balanced sub-harmonic mixer (SHM) using InP double heterojunction bipolar transistor technology (DHBT) for Q-band applications. A miniature spiral type Marchand balun with five added capacitances for improved control of amplitude and phase balance is integrated with the SHM. The measured results for the SHM demonstrates a conversion gain of 1.2 dB at an RF frequency...

In this paper, we evaluate the impact of copper (Cu) passive components on RF circuit performance. A fully-differential RF Frontend is used as a test vechicle to compare the Cu 0.18 copper process with a traditional 0.25 aluminium (Al) process. The RF Front-end contains a balun and a low noise amplifier (LNA) that are designed with spiral inductors and capacitors. CMOS spiral inductor Q values ...

In this paper we evaluate the impact of copper passive components on RF circuit performance. A fully-differential RF Front-end is used as a test vehicle to compare the UMC 0.18 micron copper process with a traditional 0.25 micron aluminium process. The RF Front-end contains a balun and a low noise amplifier (LNA) that are designed with spiral inductors and capacitors. Spiral inductor Q values r...