Comments, with reply, on "Generation of OTA-C filter structures from active RC filter structures" by R.V. Ananda Mohan

1991 ◽  
Vol 38 (11) ◽  
pp. 1401-1402 ◽  
Author(s):  
H. Nevarez-Lozano
Keyword(s):  
Active Rc Filter ◽  
Filter Structures

scholarly journals Reflectionless Filter Structures

2015 ◽  
Vol 63 (4) ◽  
pp. 1263-1271 ◽  
Author(s):  
Matthew A. Morgan ◽  
Tod A. Boyd
Keyword(s):  
Filter Structures

A compact dual-band D-CRLH-based antenna with self-isolation functionality

2021 ◽  
pp. 1-10
Author(s):  
Mahmoud A. Abdalla ◽  
Mohamed El Atrash ◽  
Ahmed A. Abdel Aziz ◽  
Mohamed I. Abdelnaser
Keyword(s):  
Patch Antenna ◽  
Planar Waveguide ◽  
Dual Band ◽  
Resonant Frequencies ◽  
Left Handed ◽  
Directional Radiation ◽  
Full Wave ◽  
Compact Size ◽  
Filtering Function ◽  
Filter Structures

Abstract This paper presents a compact dual-band filtering antenna without extra employing of filter structures. The antenna is designed using a planar dual-composite right/left-handed (D-CRLH) transmission line unit cell, where the filtering function is achieved through current cancellation between the D-CRLH resonators. The antenna is designed to function at 3.0 and 5.1 GHz, which can serve different WLAN applications. The antenna is a co-planar waveguide fed with a very compact size of only 30 × 16 mm2. Compared to the conventional patch antenna, the antenna size is only 17% at 3.0 GHz and 31% at 5.1 GHz. Despite the small size, the antenna preserves a good omni-directional radiation pattern at the two resonant frequencies with a measured realized gain of 2 and 2.7 dB, respectively. At the stopband in-between the two resonant bands, the reflection coefficient is almost 0 dB at 4.25 GHz and complete non-radiation is proved with a −11 dB measured realized gain. The different antenna filtering functions are verified by full-wave simulation and measurements.

Design and Investigation of a Self-Tuning Circuit for Integrated Active-RC Filter

2021 ◽  
Author(s):  
Karolis Kiela ◽  
Marijan Jurgo ◽  
Vytautas Macaitis ◽  
Romualdas Navickas
Keyword(s):  
Active Rc Filter ◽  
Self Tuning ◽  
Tuning Circuit
Sign in / Sign up

Export Citation Format

Share Document