Modeling of a PIN Diode RF Switch for Re configurable Antenna Application

Abstract

The paper proffers the procedure to model a PIN diode RF switch using full-wave EM solver, HFSS and utilizes the switch to built a simple partial ground plane antenna with omnidirectional radiation pattern. The proposed antenna has ability to tune it from ultra-wideband to narrowband mode. The frequency reconfigurability is accomplished by incorporating a rectangular slot resonator and a PIN diode RF switch embedded in the partial ground plane. The antenna demonstrates -10 dB impedance bandwidth from 500 MHz to 6 GHz in the ultra-wideband mode and 1.125 GHz to 2 GHz in the narrowband mode. A parasitic is stacked in the ground plane to improve the impedance matching and a rectangular slot is fused to explore the bandwidth-limiting possibility of the antenna. The optimization of the antenna is done by full-wave EM solver, HFSS and Specific Absorption Rate (SAR) of the antenna is examined using the equivalent flat tissue phantom. A prototype of the proposed antenna is fabricated and execution is accepted by measured results. The proposed antenna has simple and miniature structure, low SAR (0.41 W/Kg), omnidirectional pattern and low cross-polarization (<-15dB in E-plane and <-30dB in H-plane).

Reconfigurable broadband printed monopole antenna for portable smart IoT applications

“…Nevertheless, these technologies may add an extra complexity to the antenna designs 3 . Also, it is observed that most of the proposed antenna show an acceptable SAR value to make it qualified to the portable applications in comparison to the proposed work in Kumar et al 28 However, the proposed study in Su et al 27 discussed the possibility of reconfiguration for the frequency band variation from UWB to narrow band, while, in this work, the proposed antenna is mainly designed for radiation pattern reconfiguration that is not discussed in Su et al 27 At the end, the proposed antenna is very suitable for the IoT applications where antennas for IoT technology must be miniaturized and printed on one side of the PCB boards to print the related electronic circuit on the other side of the substrate 29 …”

Reconfigurable ultra wideband to narrowband antenna for cognitive radio applications using PIN diode

“…According to the IEEE C95.3, 2002 safety recommendations [27], the average SAR for 1 g of human tissue must be less than 1.6 W/kg. The study conducted in this paper was performed at a distance of 10 mm on body phantom of 50×57×21 mm 3 [28]. As shown in Figure 13, the designed antenna can operate safely up to an input power of 29 mW at 3.34 GHz where the max SAR is 1.562 W/Kg.…”

Slots and Complementary Split Ring Resonators Loaded Miniaturized Microstrip Antenna (S-CSRR-Mhmsa) With Reduced Cross Polarization

“…So, the inductance of the parallel RLC resonant antenna circuit model is increased, and the resonant frequency of the circuit model is decreased. Thus, the microstrip antenna is further miniaturized [12,14,15]. 1.…”