Miniaturized Dual-Band Power Splitter in LTCC for GNSS Applications

Laurenzi, Michael L.; Antar, Yahia M. M.; Freundorfer, A.P.; Clenet, Michel; Jovic, Slobodan

doi:10.1109/lmwc.2021.3081825

Cited by 6 publications

(1 citation statement)

References 7 publications

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“…However, without proper phase matching, this configuration may result in distractive interference and significant loss at the outputs and inputs of the channels. Several approaches are available for handling matching problems, such as Triplexer [1][2] or Combiner / Splitter [3][4]. However, these solutions have drawbacks, such as being limited to fixed frequencies (Triplexer) or inherent high insertion loss (~6 dB in a threechannel combiner).…”

Section: Introductionmentioning

confidence: 99%

Low Loss Multi-Channel Communication Combiner for Cellular Applications

Rosenberg,

Koral,

Mekeyess

et al. 2023

IEEE Access

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The increasing demand for cellular communication channels calls for multichannel solutions. Using one antenna for each channel results in a high density of antennas at the compact cellular station front, which generates inter-channel interference. This may result in distractive interference and significant losses at the output and input of the channels. To overcome these drawbacks, we propose a technology that combines several channels into a single antenna. We implemented a frequency-tuned, multi-channel phase control system with a phase shifter connected to each channel, with low insertion loss and low return loss. The phase shifter is composed of an ultra-wideband coupler and a computer-controlled capacitor. To obtain low insertion loss of the phase shifter, typically 1.5 dB, we designed a planar tandem hybrid coupler for the desired frequency range. We used a capacitor bank of varactor diodes for frequency tuning. The capacitance of these diodes was controlled by the applied reverse bias voltage generated by a D/A converter. The control computer received the digital input to the converter through a serial communication line. The channels were simultaneously phase matched to minimize channel losses. We performed an extensive theoretical analysis of a multi-channel frequency combiner. Based on the simulation results, a three-channel multi-coupler was implemented. The high performance of the system was demonstrated experimentally.

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Section: Introductionmentioning

confidence: 99%

Low Loss Multi-Channel Communication Combiner for Cellular Applications

Rosenberg,

Koral,

Mekeyess

et al. 2023

IEEE Access

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Reflectionless filtering power divider with wide passband using LTCC technology

Feng,

Yuan,

Wang

et al. 2024

J. Phys. D: Appl. Phys.

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This paper presents a reflectionless filtering power divider (FPD) in low-temperature co-fired ceramic (LTCC) technology. The proposed FPD consists of a pair of parallel-coupled lines (PCLs), an absorptive bandstop filtering (ABSF) section and a Wilkinson power divider section, which are distributed in different LTCC layers. A controllable wide passband is realized by quarter-wavelength PCLs and reflectionless performance at the out-of-band is achieved by employing a lossy resistor loaded in the ABSF section. For demonstration, a prototype of the proposed FPD operating at 6.5 GHz with a 3-dB fractional bandwidth of 60% is designed and fabricated using LTCC. The measured results are in good agreement with the simulated ones, which validates the theoretical prediction and design idea.

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