Design of a millimeter-wave dual-band bandpass filter using SIW dual-mode cavities

Abstract In this paper, a millimeter-wave (MMW) dual-mode and dual-band switchable Gilbert up-conversion mixer in a commercial 65-nm complementary metal oxide semiconductor (CMOS) process is presented. By simply changing the bias, the proposed CMOS Gilbert up-conversion mixer can be switched between subharmonic and fundamental operation modes for MMW dual-band applications. With a low local oscillator pumping power of 3 dBm and low dc power consumption of 6 mW, the proposed CMOS Gilbert up-conversion mixer exhibits a measured conversion gain of −0.5 ± 1.5 dB from 37 to 50 GHz and 2.5 ± 1.5 dB from 17.5 to 32 GHz for the subharmonic and fundamental modes, respectively.

Download Full-text

Design of Millimeter-Wave Bandpass Filter Using Edge-Coupling Dual-Mode Resonator

10.1109/apmc52720.2021.9661794 ◽

2021 ◽

Author(s):

Yiqun Liu ◽

Kai-Da Xu

Keyword(s):

Millimeter Wave ◽

Bandpass Filter ◽

Dual Mode ◽

Mode Resonator

Download Full-text

Miniaturized Dual-Band Bandpass Filter Using Embedded Dual-Mode Resonator with Controllable Bandwidths

Frequenz ◽

10.1515/freq-2015-0195 ◽

2016 ◽

Vol 70 (9-10) ◽

Author(s):

Chuanming Zhu ◽

Jin Xu ◽

Wei Kang ◽

Zhenxin Hu ◽

Wen Wu

Keyword(s):

Insertion Loss ◽

Degrees Of Freedom ◽

Bandpass Filter ◽

The Other ◽

Dual Band ◽

Dual Mode ◽

Transmission Zeros ◽

Low Insertion Loss ◽

Multiple Transmission ◽

Mode Resonator

AbstractIn this paper, a miniaturized dual-band bandpass filter (DB-BPF) using embedded dual-mode resonator (DMR) with controllable bandwidths is proposed. Two passbands are generated by two sets of resonators operating at two different frequencies. One set of resonators is utilized not only as the resonant elements that yield the lower passband, but also as the feeding structures with source-load coupling to excite the other to produce the upper passband. Sufficient degrees of freedom are achieved to control the center frequencies and bandwidths of two passbands. Moreover, multiple transmission zeros (TZs) are created to improve the passband selectivity of the filter. The design of the filter has been demonstrated by the measurement. The filter features not only miniaturized circuit sizes, low insertion loss, independently controllable central frequencies, but also controllable bandwidths and TZs.

Download Full-text

Dual-mode resonator filter with improved feed-lines for dual-band applications

Journal of Electrical Engineering ◽

10.2478/jee-2020-0060 ◽

2020 ◽

Vol 71 (6) ◽

pp. 433-435

Author(s):

Shan Shan Gao ◽

Jia-Lin Li ◽

Zhe Lin Zhu ◽

Jia Li Xu ◽

Yong Xin Zhao

Keyword(s):

Simple Structure ◽

High Selectivity ◽

Bandpass Filter ◽

Dual Band ◽

Dual Mode ◽

Transmission Zeros ◽

Good Consistency ◽

Mode Resonator

AbstractAn improved feedline configuration for dual-mode resonator filter is investigated in this paper. Based on the introduced topology, a dual-mode dual-band bandpass filter with center frequencies of 1.8 and 2.4 GHz is optimally designed, fabricated and tested. The introduced dual-band bandpass filter has simple structure and enables high selectivity to be realized due to two pairs of transmission zeros located near to the lower and upper passband, respectively. Both measured and simulated performances are presented with good consistency.

Download Full-text