A 35 GHz coplanar waveguide power divider

2010-12-20
Gürbüz, Ozan Doǧan
Topalli, Kagan
Ünlü, Mehmet
Demir, Şimşek
Akın, Tayfun
This text presents the design and measurement of a power divider topology implemented using coplanar waveguides by micromachining technology. The power divider is a three port structure. For simple three port power divider structures significant modifications are needed for changing power division ratio. For the proposed one in this paper the ratio can be adjusted by changing only the lengths of shunt stubs included in the structure. The design is at 35 GHz and the implementation is done by coplanar waveguides on a four inches quartz substrate using micromachining technology. © 2010 IEEE.
2010 10th Mediterranean Microwave Symposium, MMS 2010

Suggestions

A Fully Integrated and Battery-Free Interface for Low-Voltage Electromagnetic Energy Harvesters
Ulusan, Hasan; Gharehbaghi, Kaveh; Zorlu, Ozge; Muhtaroglu, Ali; Külah, Haluk (2015-07-01)
This paper presents a fully integrated and battery-free 90 nm interface circuit for ac/dc conversion and step up of low-voltage ac signals generated by electromagnetic (EM) energy harvesters. The circuit is composed of two stages: The rectifier in the first stage utilizes an improved ac/dc doubler structure with active diodes internally powered by a passive ac/dc doubler and custom-designed comparators to minimize the voltage drops. With this, the efficiency is enhanced to 67% while providing 0.61 V to 40 m...
A Low-Profile DielectricWaveguide Altimeter Antenna
Haykir, Yigit; Dagdeviren, Birkan; Korkmaz, Anil Direnc; Demir, Şimşek (2020-08-01)
In this paper, design and implementation of a compact, low-profile and low-cost altimeter antenna is presented. A top-open dielectric waveguide is utilized to obtain a radiation pattern that illuminates from 20 to 70 degrees on the elevation plane. The proposed antenna pair can be used efficiently as a radar altimeter antenna in the course of landing. The antenna can cope with high skin temperatures, especially in supersonic flights because a high-temperature resistant dielectric material is used. Satisfact...
A monolithic phased array using rf mems technology
Topallı, Kağan; Aydın Çivi, Hatice Özlem; Department of Electrical and Electronics Engineering (2007)
This thesis presents a novel monolithic phased array implemented using the RF MEMS technology. The structure, which is designed at 15 GHz, consists of four linearly placed microstrip patch antennas, 3-bit distributed RF MEMS low-loss phase shifters, and a corporate feed network. The RF MEMS phase shifter employed in the system consists of three sections with a total of 28 unit cells, and it occupies an area of 22.4 mm 2.1 mm. The performance of the phase shifters is improved using high-Q metal-air-metal ca...
A Basic Power Electronic Laboratory Experiment Allowing Comprehensive and Structured Learning: Multi-Phase Capacitive Loaded Full-Bridge Rectifier
Oztoprak, Oguzhan; Hava, Ahmet Masum (2018-08-30)
This paper provides a compact and fundamental level power electronics laboratory experiment about capacitive loaded three single-phase full-bridge diode rectifiers. While the procedure of the experiment is simple, the experiment provides wide range of opportunities for comprehensive learning on the important aspects of power electronics. The nonlinear circuit behavior of the rectifier and performance characterization are demonstrated as the conventional experiments. Moreover, the influence of the power sour...
A 180 nm Self-Powered Rectifier Circuit for Electromagnetic Energy Harvesters
Ulusan, Hasan; Zorlu, Ozge; Külah, Haluk; Muhtaroglu, Ali (2013-12-18)
This paper presents a new self-powered low voltage rectifier implementation for vibration-based electromagnetic (EM) energy harvesters. The proposed circuit is an improved version of the previously reported rectifier, which was designed in TSMC 90 nm CMOS technology. The circuit is designed in lower cost UMC 180 nm CMOS technology, and uses a passive AC/DC quadrupler structure to supply the external power of the utilized active components. Simulation results show that the maximum power conversion efficiency...
Citation Formats
O. D. Gürbüz, K. Topalli, M. Ünlü, Ş. Demir, and T. Akın, “A 35 GHz coplanar waveguide power divider,” presented at the 2010 10th Mediterranean Microwave Symposium, MMS 2010, Guzelyurt, Kıbrıs (Gkry), 2010, Accessed: 00, 2022. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78650113720&origin=inward.