Design of a Miniaturized LTCC Lumped Balun

Design of miniaturized bandpass filters using quasi-lumped Multilayer Resonators

A novel design procedure for a compact multilayer bandpass filter is proposed and examined. The filter is realized using quasi-lumped multilayer resonators. Based on the orientation of these coupled-resonator pairs, a second-order bandpass filter is realized with transmission zeros. In order to achieve a low external quality factor, i.e., a wider filter bandwidth, different types of feeder real...

Miniaturized SiGe V-Band Active Transmit Balun

A miniaturized V-band active transmit balun suitable for direct attachment to an integrated on-chip dipole antenna is proposed in this work. The circuit is constructed using a 0.35 μm SiGe HBT bipolar process (Infineon fT / fmax=170/250 GHz) operating at 55-65 GHz is fabricated and measured. The circuit exhibits a more than 11 dB conversion gain with magnitude imbalance less than 1 dB and phase...

Semi-lumped Balun Transformer using Coupled LC Resonators

This paper presents a semi-lumped balun transformer using conventional PCB process and its design theory and geometry for the maximally flat response and wide bandwidth using magnetically coupled LC resonators. The proposed balun is comprised of two pairs of coupled resonators which share one among three LC resonators. It provides an identical magnitude and phase difference of 180° between two ...

Miniaturized Balanced Antenna with Integrated Balun for Practical LTE Applications

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 Practical Design of Lumped, Semi-lumped & Microwave Cavity Filters