Comparison and analysis of integrated passive device technologies for wireless radio frequency module

2008 ◽  
Author(s):  
Arun Chandra Kundu ◽  
Mohamed Megahed ◽  
Dominik Schmidt
Keyword(s):  
Radio Frequency ◽  
Passive Device ◽  
Frequency Module ◽  
Comparison And Analysis

scholarly journals Inverted F Type Antenna Design for the Cattle Activity and Estrus Detection Sensor Module

2020 ◽  
Vol 11 (1) ◽  
pp. 298
Author(s):  
Youchung Chung
Keyword(s):  
Radio Frequency ◽  
Return Loss ◽  
Antenna Design ◽  
Sensor Module ◽  
Estrus Detection ◽  
Communication Module ◽  
Frequency Module ◽  
Rf Transmission ◽  
Main Station

In this paper, an inverted F type antenna (IFA) for ZigBee communication of a sensor board has been designed and optimized, and it replaces the chip antenna on an RF (Radio Frequency) module that is not performing well enough for the ZigBee communication. The sensor board detects cattle behavior and identifies the breeding (estrus) period and transmits the data to the main station by the RF (Radio Frequency) module and IFA antenna. The proposed and optimized TRx (transmitting/receiving) IFA antenna of the ZigBee communication module has a return loss of −19 dB and a gain of 1.6 dB at 2.45 GHz. The size is about 2.5 × 0.5 cm in width and vertical length, and the height is 0.55 cm. The strength of signals with the chip antenna and the IFA antenna have been measured and compared. There is about a 20 dB enhancement with the IFA antenna compared to the chip antenna. The antenna is designed and applied to the RF transmission and reception (TRx) module. This antenna and sensor module can be applied to livestock in general as well as cattle.

scholarly journals ZeroMAC: Toward a zero sleep delay and zero idle listening media access control protocol with ultralow power radio frequency wakeup sensor

2017 ◽  
Vol 13 (8) ◽  
pp. 155014771771639 ◽  
Author(s):  
Sang Hoon Lee ◽  
Lynn Choi
Keyword(s):  
Access Control ◽  
Radio Frequency ◽  
Media Access Control ◽  
Media Access ◽  
Duty Cycling ◽  
Control Protocol ◽  
On Demand ◽  
Frequency Module ◽  
Idle Listening ◽  
Media Access Control Protocol

In wireless sensor networks, duty cycling has been an imperative choice to reduce idle listening but it introduces sleep delay. To break through the energy-latency tradeoff, we propose a pair of a radio wave sensor called radio frequency wakeup sensor and an on-demand media access control protocol called ZeroMAC. Radio frequency wakeup sensor is dedicated to sense the presence of a signal. The distinctive feature is that the sensor can provide the same sensitivity while it consumes only two orders of magnitude less energy than the underlying radio frequency module. With the sensor, a node no longer requires duty cycling. We also propose an on-demand media access control protocol called ZeroMAC that can effectively utilize the on-demand wakeup functionality of a radio frequency wakeup sensor by broadcasting a dedicated signal to wake up nodes before starting a communication. Since each node can notify neighbor nodes of a communication immediately, ZeroMAC can eliminate both idle listening and sleep delay. ZeroMAC wakes up only the nodes on the communication path by propagating wakeup signals in a hop-by-hop manner, avoiding unnecessary signal flooding. To further save energy, ZeroMAC can turn off radio frequency module as soon as it detects the end of communication. According to packet level simulation results, ZeroMAC can deliver data packets at least 1.87 times faster by eliminating both idle listening and sleep delay while it consumes only 3% of the energy compared to X-MAC and A-MAC.

scholarly journals PERANCANGAN ALAT SISTEM PENGONTROLAN SUHU DAN KELEMBAPAN RUANG BUDIDAYA ULAT SUTERA BERBASIS WIRELESS

2019 ◽  
Vol 1 (2) ◽  
pp. 28-39
Author(s):  
Umar Katu ◽  
Rosmilawaty Rosmilawaty ◽  
Anri Iswanto
Keyword(s):  
Radio Frequency ◽  
Bombyx Mori ◽  
Personal Computer ◽  
Frequency Module ◽  
Bombyx Mori L ◽  
Rf Module

Budidaya ulat sutra merupakan salah satu usaha budidaya yang sering di jumpai di beberapa sentra produksi kain sutera. Ulat sutera (Bombyx mori L.) merupakan salah satu jenis serangga yang mempunyai nilai ekonomis tinggi bagi manusia. Serangga tersebut adalah produsen serat sutera yang merupakan bahan baku sutera dibidang pertekstilan, benang bedah, dan parasut dengan kulitas tinggi, belum bisa dikalahkan oleh serat sutera buatan. Siklus Hidup ulat sutera dapat tumbuh optimal pada suhu lingkungan 23-28 ºC dan kelembaban 80-90% RH. Apabila dipelihara dalam lingkungan bersuhu lebih panas maka produktivitas akan menurun karena ulat sutera adalah hewan berdarah dingin (poikilotherm). Berdasarkan hal tersebut, tugas akhir ini bertujuan untuk mengoptimalkan produktivitas ulat sutera dengan merancang sebuah sistem pengontrolan berbasis wireless yang dapat mengontrol suhu dan kelembaban ruang budidaya ulat sutera sesuai dengan kebutuhan yaitu 23-28 ºC dan kelembaban 80-90%. System pengontrol suhu dan kelembaban dengan mnggunakan Radio Frequency module (RF module) yang akan ditampilkan pada monitor berupa Personal Computer (PC). Jika suhu tidak sesuai berdasarkan pembacaan sensor dengan range yaitu 23-28ºC, kipas angin akan aktif dan apabila kelembaban tidak sesuai berdasarkan pembacaan sensor dengan range yaitu 80-90 % RH, sprayer akan aktif.

scholarly journals Military Safety and Surveillance Robot with Two-Way Communication

2021 ◽  
Vol 9 (VII) ◽  
pp. 1592-1596
Author(s):  
Mr. Vinod Kumar S
Keyword(s):  
Radio Frequency ◽  
Communication Technology ◽  
Data Transmission ◽  
Robotic Arm ◽  
Unmanned Ground Vehicle ◽  
Ground Vehicle ◽  
Proposed Model ◽  
Wireless Medium ◽  
Frequency Module ◽  
Battlefield Environment

This paper focuses on developing an Unmanned Ground Vehicle (UGV) wireless robot. It can sense the different parameters of the surroundings; transmit the data through a wireless medium and display data in LCD as well as on a Remote PC. It controls the direction of the robot from a remote location using wireless communication and thereby performing military surveillance and analysing the battlefield environment and challenges that the soldiers may potentially face. By using a Wi-Fi camera and many sensors the robot can help the soldiers in the war fields to examine various environmental conditions and challenges. The arduino and NRF (Nordic Radio Frequency) technologies are used to achieve the above tasks. The different sensors and the robotic arm are connected to the Arduino Uno which in turn is connected to the Nordic Radio Frequency module. Data transmission and receiving are done through Nordic Radio Frequency communication technology. The proposed model eliminates the limitations of the existing models and thus provides better assistance to the soldiers and enables them to handle their missions better.

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