This article presents an antenna with a magnetodielectric material and its MIMO application for LTE-band. The proposed antenna is a folded monopole type and occupies a compact volume of 7.5 18.5 3.4 mm. For reducing the size, obtaining the broad bandwidth, and enhancing the isolation performance, the magneto-dielectric material is applied as a supporter. The parameters of the magneto-dielectric...

The objective of this chapter is to show the applications of innovative reconfigurable antenna methodologies for the 4G devices. Microwave antenna technology can be very useful for the 4G devices, because these products will require high bandwidth and high velocity channel with respect to conventional antennas. This chapter presents a complete picture of possible applications of advanced microw...

Active microwave imaging is explored as an imaging modality for early detection of breast cancer. When exposed to microwaves, breast tumor exhibits electrical properties that are significantly different from that of healthy breast tissues. The two approaches of active microwave imaging — confocal microwave technique with measured reflected signals and microwave tomographic imaging with measured...

Using the difference of dielectric constant between malignant tumor tissue and normal breast tissue, BRATUMASS (Breast tumor microwave sensor system [1]) can determine the detected target properties by analyzing the properties of target tissue back wave obtained by near-field microwave radiation. The practical experiments show that the target space and records of antenna corresponding position ...

Conventional microstrip antennas in general have a conducting patch printed on a grounded microwave substrate, and have the attractive features of low profile, light weight, easy fabrication, and conformability to mounting hosts [1]. However, mi-crostrip antennas inherently have a narrow bandwidth, and bandwidth enhancement is usually demanded for practical applications. In addition, applicatio...

The existence of large blood vessels seriously impacts the results of microwave ablation on heat transfer of surrounding tissue, and the research of influences about large blood vessels could be essential and significant. The temperature distribution in the tissue was analyzed with a microwave heating source by finite element method. The model, where the blood vessel is parallel to antenna, has...

The paper presents an optoelectronic system for antenna beam control. Dispersion technique has been applied to build variable delay lines for wide bandwidth microwave signals. Optoelectronic beam scanning system configuration and measurements results have been presented. Key-Words: antenna, fibre optic, beam forming, optoelectronics, laser.

Optical-microwave interaction has been emphasized in optically reconfigurable antenna arrays (ORA) due to the unique advantage that transparency between the optical control signals and microwave signals makes the antenna less susceptible to jamming. One of the important parts in ORA is an optically controlled microwave switch (OMS) as synaptic elements. A gap-structure OMS has been developed as...

Detect breast cancer in early stages, ensure a comfortable and cheap diagnostics in order to reduce women mortality, are the challenges of this paper. A compact ultra wideband (UWB) Planar antenna for Microwave thermography system is designed and simulated using two commercial software, CST Microwave Studio and HFSS simulators.

We propose a novel all-optical structure of phase lock loop for locking two semiconductor lasers with a stable microwave offset for use in phased-array antenna systems.