A harmonic-rejection mixer with improved design algorithm for broadband TV tuners

Zhang, Huajiang; Gao, Tian; Tan, Sam Chun Geik; Shanaa, Osama

doi:10.1109/rfic.2012.6242255

Cited by 18 publications

(7 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Huajiang Zhang et al (2012) [8] proposed a harmonic rejection mixer with improved design algorithm for broadband TV tuners. A wide band harmonic rejection mixer for TV tuners with an improved design algorithm is fabricated in 65 nm CMOS process.…”

Section: Related Workmentioning

confidence: 99%

Harmonic Rejection in 2.4 GHz Gilbert Cell Mixer for Terrestrial Microwave Communication systems

Venkatesan¹,

Kumar²

2016

IJCA

View full text Add to dashboard Cite

Mixer is one of the significant components of the radio frequency transceiver that translate baseband signal into RF and vice versa. In this paper, 2.4 GHz double balanced Gilbert Cell Mixer topology was simulated to study its important properties such as Conversion Gain, Linearity, Noise Figure and Port Isolation. Further, a band pass filter is added in to the design at IF port so as to reject harmonics. The mixer topology is designed and simulated using NMOS 180 nm CMOS technology in Advanced Design Systems. As a result, conversion gain of 8.303 dB, high linearity, high port isolation and Harmonic Rejection Ratio > 80 dB is achieved. General TermsHarmonic rejection in down conversion Gilbert cell Mixer

show abstract

Section: Related Workmentioning

confidence: 99%

Harmonic Rejection in 2.4 GHz Gilbert Cell Mixer for Terrestrial Microwave Communication systems

Venkatesan¹,

Kumar²

2016

IJCA

View full text Add to dashboard Cite

show abstract

“…The block diagram of the HRM design is shown in figure 1. The mixer core uses a self-biased CMOS inverter-like trans-conductance (Gm) stage driving a current driven passive mixer whose output is fed to a TIA [1]. A passive mixer has good flicker noise performance since there is no DC current flowing through its switching devices.…”

Section: Receiver Design a Hrmmentioning

confidence: 99%

“…Finally, the IF AC currents are summed at the input of the TIA to complete the harmonic rejection function [1] [2]. The variable capacitor at the TIA input is tuned according to different operating frequency to lower the TIA input impedance and improve the harmonic rejection performance [1]. The HRM Gm is intentionally designed with a relatively high gate overdrive to allow for large input signal swing and high IIP3.…”

Section: Receiver Design a Hrmmentioning

confidence: 99%

A Universal silicon TV Tuner with a compact synthesizer in 0.18μm CMOS

Ong

Khoo

Yang

et al. 2013

2013 IEEE Asian Solid-State Circuits Conference (A-Sscc)

Self Cite

View full text Add to dashboard Cite

A 45MHz to 1002MHz direct conversion Universal TV Tuner (UTV) supports world-wide TV broadcast standards, such as ATV (NTSC, PAL, SECAM), DTV (ISDB-T, DVB-T, DVB-T2, ATSC, DTMB, DVB-C/C2), EN55020 etc. The tuner exhibits less than 5.5dB noise figure (NF), >70dB image rejection, +30dBm IIP3, +67dBm IIP2 and harmonic rejection of more than 70dB over the operating frequency range. An integrated PLL with a novel compact integrated loop filter locks a broadband dualtank VCO to a 29MHz reference. The tuner occupies less than 10mm 2 of silicon area in 0.18 m CMOS and consumes around 659mW from 3.3V/2.2V dual supply.

show abstract

“…The 25% duty-cycle scheme offers a 3 dB higher conversion gain and a reduced noise-figure compared to 50% duty-cycle mixers [1], [3]. A well-known issue in square-wave mixers is the generation of harmonics in the mixer branches [4]- [6] which leads to the down-conversion of unwanted spectral components contained in the RF input current i RF (t). To avoid this harmonic down-conversion by the harmonic response of the mixer, several approaches can be found in the existing literature.…”

Section: Introductionmentioning

confidence: 99%

“…In [7], a 33% duty-cycle mixer for the rejection of the 3 rd order harmonic response of the mixer is proposed. The HR mixers introduced in [5], [6] use an LO signal with suppressed harmonics by approximating the ideal sine wave by a 3-bit amplitude-quantized signal. The waveform is composed of three 45 • shifted square-wave signals which are weighted and added.…”

Section: Introductionmentioning

confidence: 99%

A Harmonic Rejection Strategy for 25% Duty-Cycle IQ-Mixers Using Digital-to-Time Converters

Gebhard¹,

Sadjina²,

Tertinek³

et al. 2020

IEEE Trans. Circuits Syst. II

View full text Add to dashboard Cite

Due to the use of wide-band analog front-ends in order to cover the many different frequency bands used in Long Term Evolution (LTE), blocker signals received by the antenna may reach the mixer input. As a consequence, square-wave mixer implementations, as, e.g., the 25% duty-cycle current-driven passive mixer, may lead to the down-conversion of these blocker signals by their harmonic response. This contribution describes a harmonic rejection (HR) strategy, which modifies the local oscillator (LO) waveform of a 25% duty-cycle current-driven passive mixer, to suppress specific harmonics. Two HR control signal waveforms are proposed and their performance is evaluated by circuit simulations using a 28 nm CMOS technology. By applying the proposed concept, the down-conversion of a blocker by the mixer's 3 rd order harmonic response can be suppressed by more than 30 dB, and the receiver noise figure (NF) is improved by 21.1 dB for a blocker power of −5 dBm at the low-noise amplifier (LNA) input.

show abstract

A harmonic-rejection mixer with improved design algorithm for broadband TV tuners

Cited by 18 publications

References 4 publications

Harmonic Rejection in 2.4 GHz Gilbert Cell Mixer for Terrestrial Microwave Communication systems

Harmonic Rejection in 2.4 GHz Gilbert Cell Mixer for Terrestrial Microwave Communication systems

A Universal silicon TV Tuner with a compact synthesizer in 0.18μm CMOS

A Harmonic Rejection Strategy for 25% Duty-Cycle IQ-Mixers Using Digital-to-Time Converters

Contact Info

Product

Resources

About

A harmonic-rejection mixer with improved design algorithm for broadband TV tuners

Cited by 18 publications

References 4 publications

Harmonic Rejection in 2.4 GHz Gilbert Cell Mixer for Terrestrial Microwave Communication systems

Harmonic Rejection in 2.4 GHz Gilbert Cell Mixer for Terrestrial Microwave Communication systems

A Universal silicon TV Tuner with a compact synthesizer in 0.18&#x03BC;m CMOS

A Harmonic Rejection Strategy for 25% Duty-Cycle IQ-Mixers Using Digital-to-Time Converters

Contact Info

Product

Resources

About

A Universal silicon TV Tuner with a compact synthesizer in 0.18μm CMOS