Miniaturization of quadrature stub directional couplers.

The method of designing stub quadrature couplers with reduced dimensions relative to the standard design is considered. This technique is based on replacing quarter-wave sections of a microstrip transmission line (MTL) with low-pass filters (LPF), with equivalent frequency characteristics in the vicinity of the central frequency of the device. In addition, the circuit and design implementations of compact couplers with a controlled operating frequency and different wave impedances of the supply lines of the coupler are considered.

Download Full-text

Resonator for microwave magnetoelectric effect

ITM Web of Conferences ◽

10.1051/itmconf/20193007012 ◽

2019 ◽

Vol 30 ◽

pp. 07012

Author(s):

Vyacheslav Lobekin ◽

Alexandr Tatarenko ◽

Andrei Belyshev ◽

Mirza Bichurin

Keyword(s):

Computer Simulation ◽

Transmission Line ◽

Ferromagnetic Resonance ◽

Ring Resonator ◽

Magnetoelectric Effect ◽

Frequency Characteristics ◽

Microstrip Transmission Line ◽

Microstrip Ring ◽

Microstrip Ring Resonator

The design of a ring resonator made on a microstrip transmission line is presented. A study of ferromagnetic resonance using this design was made. Computer simulation of a microstrip ring resonator was carried out, and amplitude-frequency characteristics were obtained.

Download Full-text

Transmission Characteristics and a Design Method of Transmission-Line Low-Pass Filters with Multiple Pairs of Coincident Zeros and Multiple Pairs of Coincident Poles

IEEE Transactions on Microwave Theory and Techniques ◽

10.1109/tmtt.1980.1130184 ◽

1980 ◽

Vol 28 (8) ◽

pp. 865-874 ◽

Cited By ~ 3

Author(s):

J. Huruya ◽

R. Sato

Keyword(s):

Transmission Line ◽

Design Method ◽

Transmission Characteristics ◽

Low Pass ◽

Low Pass Filters

Download Full-text

Novel miniaturized low-pass filters from artificial transmission line structures

High Power Laser and Particle Beams ◽

10.3788/hplpb20132511.2919 ◽

2013 ◽

Vol 25 (11) ◽

pp. 2919-2921

Author(s):

吴昕 Wu Xin ◽

黄文 Huang Wen ◽

童帆 Tong Fan ◽

刘长军 Liu Changjun

Keyword(s):

Transmission Line ◽

Low Pass ◽

Low Pass Filters

Download Full-text

Standard design table for low-pass filters

Analogue Electronic Circuits and Systems ◽

10.1017/cbo9781139168069.015 ◽

1991 ◽

pp. 338-338

Keyword(s):

Standard Design ◽

Low Pass ◽

Low Pass Filters

Download Full-text

Designing a downsized quadrature directional coupler

Telfor Journal ◽

10.5937/telfor2101025l ◽

2021 ◽

Vol 13 (1) ◽

pp. 25-28

Author(s):

Denis Letavin

Keyword(s):

Phase Shift ◽

Directional Coupler ◽

Cutoff Frequency ◽

Directional Couplers ◽

Low Pass ◽

Quarter Wave ◽

Low Pass Filters ◽

Physical Dimensions

To miniaturize directional couplers, the replacement of their quarter-wave sections with electrodynamic structures with equivalent characteristics at smaller physical dimensions is used. It is shown that the structures used have filtering properties and act as low-pass filters. It is set at what cutoff frequency the low-pass filters must be calculated to obtain a phase shift of 90 degrees.

Download Full-text