Active Eight-Path Filter and LNA With Wide Channel Bandwidth and Center Frequency Tunability
(2017) In IEEE Transactions on Microwave Theory and Techniques 65(11). p.4715-4723- Abstract
- This paper presents a differential eight-path bandpass filter with tunable center frequency and bandwidth. Fully differential Miller compensated Butterworth Gm-C biquads are used to implement the active low-pass filters required in the structure of the eight-path filter. The -3-dB bandwidth of each Gm-C filter can be tuned from 2.5 to 51 MHz by means of six digital bits. The center frequency of the eight-path filter can be tuned from 100 MHz to 2 GHz by varying the frequency of the 12.5% duty cycle clocks applied to the gates of the switches in the filter. A wideband low-noise amplifier (LNA) is designed to precede the eight-path filter and acts as an active single-to-differential converter while providing a moderate voltage gain to... (More)
- This paper presents a differential eight-path bandpass filter with tunable center frequency and bandwidth. Fully differential Miller compensated Butterworth Gm-C biquads are used to implement the active low-pass filters required in the structure of the eight-path filter. The -3-dB bandwidth of each Gm-C filter can be tuned from 2.5 to 51 MHz by means of six digital bits. The center frequency of the eight-path filter can be tuned from 100 MHz to 2 GHz by varying the frequency of the 12.5% duty cycle clocks applied to the gates of the switches in the filter. A wideband low-noise amplifier (LNA) is designed to precede the eight-path filter and acts as an active single-to-differential converter while providing a moderate voltage gain to compensate for the noise produced by the eight-path filter. The LNA has a noise canceling common-gate common-source with 20 dB of gain and a noise figure (NF) of 1.8 dB. The filter and LNA are designed and fabricated in 180-nm CMOS process. The circuit operates in 100 MHz to 2 GHz frequency range, achieving a voltage gain of 19 dB and a total NF of 3.3 dB. The achieved out-of-band input third-order intercept point of the circuit is +23 dBm, and the power consumption of the filter is approximately 32.3 mW, while the LNA consumes 16.5 mW.
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Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/bd85c85b-c4bc-48e4-af39-e8c516337eab
- author
- Behmanesh, Baktash LU and Atarodi, Seyed Mojtaba
- publishing date
- 2017-05-26
- type
- Contribution to journal
- publication status
- published
- subject
- in
- IEEE Transactions on Microwave Theory and Techniques
- volume
- 65
- issue
- 11
- pages
- 4715 - 4723
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:85020065608
- ISSN
- 0018-9480
- DOI
- 10.1109/TMTT.2017.2698466
- language
- English
- LU publication?
- no
- id
- bd85c85b-c4bc-48e4-af39-e8c516337eab
- date added to LUP
- 2021-11-30 12:08:13
- date last changed
- 2022-04-27 06:22:15
@article{bd85c85b-c4bc-48e4-af39-e8c516337eab, abstract = {{This paper presents a differential eight-path bandpass filter with tunable center frequency and bandwidth. Fully differential Miller compensated Butterworth Gm-C biquads are used to implement the active low-pass filters required in the structure of the eight-path filter. The -3-dB bandwidth of each Gm-C filter can be tuned from 2.5 to 51 MHz by means of six digital bits. The center frequency of the eight-path filter can be tuned from 100 MHz to 2 GHz by varying the frequency of the 12.5% duty cycle clocks applied to the gates of the switches in the filter. A wideband low-noise amplifier (LNA) is designed to precede the eight-path filter and acts as an active single-to-differential converter while providing a moderate voltage gain to compensate for the noise produced by the eight-path filter. The LNA has a noise canceling common-gate common-source with 20 dB of gain and a noise figure (NF) of 1.8 dB. The filter and LNA are designed and fabricated in 180-nm CMOS process. The circuit operates in 100 MHz to 2 GHz frequency range, achieving a voltage gain of 19 dB and a total NF of 3.3 dB. The achieved out-of-band input third-order intercept point of the circuit is +23 dBm, and the power consumption of the filter is approximately 32.3 mW, while the LNA consumes 16.5 mW.<br/>}}, author = {{Behmanesh, Baktash and Atarodi, Seyed Mojtaba}}, issn = {{0018-9480}}, language = {{eng}}, month = {{05}}, number = {{11}}, pages = {{4715--4723}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Transactions on Microwave Theory and Techniques}}, title = {{Active Eight-Path Filter and LNA With Wide Channel Bandwidth and Center Frequency Tunability}}, url = {{http://dx.doi.org/10.1109/TMTT.2017.2698466}}, doi = {{10.1109/TMTT.2017.2698466}}, volume = {{65}}, year = {{2017}}, }