An integrated antenna for cognitive radio wireless sensor networks and HD video transmission applications

Abstract

This article introduces an integrated polarization divesity cognitive radio (CR) and Ultrawide Band (UWB) Multiple Inputs and Multiple Output (MIMO) antenna systems for CR wireless sensor networks (CR‐WSN) and short‐range HD video transmission applications. This proposed integrated antenna system's main purpose is to overcome the impediments of frequency re‐configurable UWB/Narrow Band (NB) antenna system. The proposed integrated system consists of two antenna systems: the CR antenna and the UWB MIMO antenna system. The first part of the integrated antenna system is the CR antenna that comprises vertical and horizontal oriented UWB antennas to sense the spectrum and four NB antennas for communication purposes. The second part of the integrated antenna system is a 2 × 2 MIMO antenna that comprises a veritical and horizontal oriented UWB antenna with notch characteristics for MIMO applications. High isolation is achieved without using a decoupling structure by placing radiators in the horizontal and vertical planes. The proposed integrated 3D antenna system is designed with a compact size of 50 × 50 mm2. The antenna's essential parameters, such as the reflection coefficient, mutual coupling, peak gain, the radiation pattern, and radiation efficiency, are analyzed to evaluate the antenna's performance. The proposed integrated antenna system is suitable for off‐device applications in industries or Laboratories. The real‐time implementation of CR‐WSN and short‐range wireless HD video transmission applications are demonstrated using National Instruments (NI) Universal Software Radio Peripheral (USRP) and CC2538 kit.

Analysis of integrated UWB MIMO and CR antenna system using transmission line model with functional verification

“…Reconfigurable antennas, on the other hand, have the following drawbacks: The biasing circuit is difficult to build, the toggling is influenced by in homogeneity, and the PIN diode needs extra power. The integrated antenna system 27 provides solution for the above mentioned problems. There are two independent antennas in the proposed integrated antenna systems 27 .…”

“…The integrated antenna system 27 provides solution for the above mentioned problems. There are two independent antennas in the proposed integrated antenna systems 27 . For the transmission line model analysis and functional verification we have considered our designed antenna 27 .…”

“…There are two independent antennas in the proposed integrated antenna systems 27 . For the transmission line model analysis and functional verification we have considered our designed antenna 27 . First, part of the antenna system includes the CR antenna(UWB and NB) and second, part includes the UWB MIMO antenna 27 .…”

“…For the transmission line model analysis and functional verification we have considered our designed antenna 27 . First, part of the antenna system includes the CR antenna(UWB and NB) and second, part includes the UWB MIMO antenna 27 . The UWB antenna for detection and NB antennas to execute communications.…”

“…For both sending and receiving, the UWB MIMO antenna radiators are constantly active, but sensing UWB radiators are always active 27 . In addition, the narrowband antennas are idle, but if the UWB antenna detects white space, the associated NB antenna is active for communication 27 . This article introduces the equivalent circuit model of integrated antenna system.…”