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A 433 MHz compact size balun that can transform a complex source impedance value to a complex load impedance value is demonstrated. The balun design is based on a coupled-line coupler balun. The simulation shows a good performance at 433 MHz operating frequency.
An array of microstrip lines is used for the direct excitation of the spatially distributed TE10 substrate integrated waveguide (SIW) mode. The proposed configuration can generate 4x more power with a 4x smaller form factor relative to a single microstrip-to-SIW transition, while offering a larger bandwidth. This is an important step toward the generation of high power in densely integrated mm-wave...
In this paper, a novel compact integrated antenna-diplexer for Frequency-division duplex low latency wireless backhaul links at E-band is presented. The proposed solution is designed in a multilayer architecture with each layer having different functional blocks. The layers have been stacked on top of each other without any electrical contact requirement between them. This is achieved by using packaging...
Conventional loop antennas for RFID reader usually perform worse with metallic environment. To improve reading range under this condition, a ferrite sheet is incorporated in the conventional loop antenna. The proposed antenna yields similar reading range with or without metallic environment.
A multi-band orthomode transducer design, which covers 89, 36.5, 22.3 and 18.6 GHz, the general operating frequencies of microwave radiometers, is presented in this paper. Excellent impedance matching and polarization purity are achieved across all the frequency bands. The coaxial-type orthomode transducer-junction can provide adequate isolation between ports of different frequencies, and avoid serious...
This paper presents a simulation method for the DCO. EM simulations are essential and inevitable for modern LC oscillator design. Although EM-simulators provide high accuracy, the EM-simulation time is very long when metal-oxide-metal (MoM) capacitors are present. The proposed frame-based EM-simulation can significantly reduce the EM-simulation time even in the presence of MoM capacitors without influencing...
A flat and low profile, wideband and high gain Substrate Integrated Waveguide (SIW) Transmission Line (TL) Butler Matrix (BM) beamforming network (BFN) for beamforming and beam-steering applications at 28 GHz (5G) is presented in this paper. Four distinct beams steering between −35° to 35° with sidelobe and return-loss level below −10 dB are generated by connecting the proposed BFN to microstrip antennas...
This paper presents the design of a palm-sized metamaterial antenna system having reconfigurable polarization as well as dual-band characteristics. Basically, three antennas are laid by 45 degrees in order and excited by a compact metamaterial equal-ratio and equal-phase power-splitter, and the radiated fields of the antennas are mixed to turn the vector of the polarization to another. The legitimacy...
In this paper, a power divider is proposed. The presented divider consists four varactors and two microstrip lines. The divider has four ports, port 1, port 2, port 3 and port 4. Port 1 is the input port, and port 3, 4 are output ports. Besides, port 2 is the isolated port. When the capacitance of the four varactors is 0, the power is outputted in port 4. When the capacitance of the four varactors...
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