A compact-size microstrip spiral resonator and its application to microwave oscillator

Lee, Young-Taek; Lim, Jongsik; Kim, Chul-Soo; Ahn, Dal; Nam, Sangwook

doi:10.1109/lmwc.2002.804556

Cited by 88 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The parameters of the RLC tank (i.e. R R , L R and C R ) are determined by the dimensions of the resonator [20]. By varying the dimensions and number of turns, each resonator can possess a unique resonant frequency.…”

Section: Cls Tagmentioning

confidence: 99%

A chipless light switch for smart‐homes

Almansouri

2023

IET Circuits, Devices & Syst

View full text Add to dashboard Cite

The limited and inconvenient functionality of conventional light switches is out of pace with current advancements in wireless sensors. A chipless RFID light switch (CLS) that is passive, battery‐free and relocatable and maintains the convenience of having physical buttons for controlling lightbulbs or other electrical devices is introduced. These characteristics have been achieved by attaching single‐pole‐single‐through toggle switches to the edges of radio frequency spiral resonators. The status of the switches activates or deactivates the resonators, allowing the CLS tag to passively communicate the status of the switches. A CLS tag with two ID resonators (used for tag identifications), and two measurement resonators [MRs] (connected with switches and used to communicate the status of the switches) was designed and fabricated using a 1‐mm‐thick FR4 substrate. Measurement results showed resonant frequencies at 1115 and 1220 MHz corresponding to the ID resonators and frequencies at 848 and 971 MHz corresponding to the MRs. Turning the switches OFF and ON successfully activated and deactivated the MRs.

show abstract

Section: Cls Tagmentioning

confidence: 99%

A chipless light switch for smart‐homes

Almansouri

2023

IET Circuits, Devices & Syst

View full text Add to dashboard Cite

show abstract

“…The spiral resonator can be modeled by an RLC parallel circuit as shown in Fig. 3c which introduces the band stop feature when resonance occurs [15]. The RLC values can be changed to adjust the resonant frequency as needed.…”

Section: Design Of the Chipless Rfid Tagmentioning

confidence: 99%

Design of a Novel Frequency-Coded Chipless RFID Tag

Gao

Mahmoodi

Zoughi

2022

IEEE Open J. Instrum. Meas.

View full text Add to dashboard Cite

Chipless radio frequency identification (RFID) is a low-cost RFID solution that has the potential to replace traditional barcodes in short-range applications. In this paper, a novel frequency-coded chipless RFID tag is designed at . Compared to previous designs, the proposed tag has a more compact design by multiplexing one tag antenna for both transmitting and receiving purposes. In addition, the tag is designed on a substrate with ground plane, which reduces the undesired effect of the background detuning. To demonstrate the performance of the proposed chipless RFID tag, four 3-bit tags are designed in simulation, with having two of them manufactured and tested. Simulations and measurements are performed for codes of 000 and 111, and the results verify the validity of the proposed design. Finally, the sensitivity of the tag response to fabrication errors and orientation are discussed and demonstrated with simulations.

show abstract

“…Moreover, a parallel RLC equivalent circuit is presented in Fig. 3(b) [14]. In the equivalent circuit, the spiral is modeled by a resistor R s , an inductor L s and a capacitor C s .…”

Section: A Theorymentioning

confidence: 99%

Towards an intelligent EM barcode

Amin

Karmakar

Preradovic

2012

2012 7th International Conference on Electrical and Computer Engineering

View full text Add to dashboard Cite

In this paper, a detail literature review on the research development of 'wireless chipless RFID sensor platform' has been presented. The review aims to highlight the future trend of chipless RFID technology and the realization of an intelligent Electromagnetic (EM) barcode by integrating sensing mechanism to this platform. Here, a chipless RFID sensor comprising of multiresonator spirals coupled with a microstrip line is proposed. Each spiral represents a single data bit and the number of cascaded spirals corresponds to the number of bits it can store. The integration of sensing is performed by utilizing the resonant frequency of a specific spiral of the tag. Unlike earlier reported works on chipless RFID sensor our proposed sensor does not require any external circuitry for sensing environment physical parameter such as temperature, gas, humidity etc. The most significant feature is the ability to combine multiple physical parameters sensing paradigm in the same chipless RFID platform for ubiquitous environment condition monitoring.

show abstract

A compact-size microstrip spiral resonator and its application to microwave oscillator

Cited by 88 publications

References 8 publications

A chipless light switch for smart‐homes

A chipless light switch for smart‐homes

Design of a Novel Frequency-Coded Chipless RFID Tag

Towards an intelligent EM barcode

Contact Info

Product

Resources

About