Design of a subharmonic cascode FET mixer for an IMT‐2000 base station

Kim, Jeongpyo; Choi, Jaehoon

doi:10.1002/mop.11265

Cited by 6 publications

(5 citation statements)

References 3 publications

(2 reference statements)

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“…Therefore, a cascode FET mixer has a better LO-to-RF isolation characteristic than a single-gate mixer. It is very practical to use a single-device cascode FET mixer in application where a balanced mixer would otherwise be needed [9].…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…Recently, there have been considerable research efforts in the areas of electromagnetic band-gap (EBG) structures (previously termed PBG), microwave circuits [5], and antenna applications [6 -8]. A number of studies have been carried out in EBG for microwave application, for example, by drilling a periodic pattern in the dielectric substrate [9], etching the periodic pattern in the ground plane [2,10], or using sinusoidal variation of the characteristic impedance [11].…”

Section: Introductionmentioning

confidence: 99%

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Design of a multiband VCO using a cascode FET mixer

Kim

Yoo

Choi

2006

Micro & Optical Tech Letters

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Section: Theoretical Backgroundmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of a multiband VCO using a cascode FET mixer

Kim

Yoo

Choi

2006

Micro & Optical Tech Letters

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“…(4), and unwanted sideband suppression expression can be obtained, which is shown in Eq. (5). The sideband suppression may be effected by all the amplitude errors and phase errors.…”

Section: Error Expressionmentioning

confidence: 99%

“…The SSB is introduced to choose the sideband by phase method [1,2]. Different from some other microwave mixers [3][4][5], a Hartley phasing-type SSB modulator which is used as an upconverter can be regarded as a vector modulator, with the IF phase inputs fed in quadrature. The transmission frequency responses of the I and Q path must be identical, and the LO and IF power divider must provide exact phase shift to achieve good performance.…”

Section: Introductionmentioning

confidence: 99%

Error analysis on single sideband modulator

Chen

Shi

Guo

2008

Micro & Optical Tech Letters

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mm, which can be regarded as an open stub, whereas the one at 6.65 GHz is owing to the parallel coupling between the two MMRs. It is interesting to note that both the simulated and measured return-loss curves show four distinct reflection zeros, the first (last) two of which pertain to the mode splitting due to the coupling between the two MMRs that are in /4 (/2) resonance. The presence of the reflection zeros thus enhances the transmission, leading to a relatively wide and flat passband. Also shown in Figure 6 is the measured group delay, which is less than 0.56 ns in the passband. The maximum in-band group-delay variation of 0.11 ns in conjunction with the flat insertionloss response in the passband implies the good linear characteristic of the proposed wideband BPF. Presented in Figure 7 is the photograph of the fabricated wideband BPF, which measures only 6.91 ϫ 11.71 mm 2 . CONCLUSIONA wideband BPF consisting of two MMRs has been proposed and implemented in this paper. The novel MMR was formed by combining two /4 SIRs, resulting in /4 resonance at one frequency and /2 at the other. By locating the fundamental resonant frequency of the inherent /4 SIR and that of the embedded /2 SIR in the designated passband of the proposed BPF, we have successfully realized a wideband BPF. The fabricated BPF was demonstrated to have a large passband bandwidth of 1:2.2 with an insertion loss of less than 0.86 dB and a small group-delay variation of not more than 0.11 ns in the passband.

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“…In order to improve these drawbacks, in this work, a cascode mixer has been proposed, as shown in Fig.1 with target bands of 2.4 and 5.8GHz. It is a single stage cascode circuit consume power almost half of the differentially balance configuration while keeping the similar gain performance and offers low noise [5].…”

Section: Introductionmentioning

confidence: 99%

Cascode mixer for multiband wireless

Singh

Alam

2013

Impact-2013

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This paper describes multiband cascode mixer for 2.4 GHz and 5.8GHz wireless LAN applications. The designed mixer has been found to give isolation for LO-to-IF as -20dB, LO-to-RF as -18dB and RF-to-IF as -13 dB at 2.4GHz, whereas these isolations, at 5.8GHz, were found as -16dB, -14dB and -11.5dB, respectively, with fixed intermediate frequency f IF of 100MHz. With power consumption P dc 4.2mW, the mixer demonstrated conversion gain G c >10dB and linearity IP3 >1.2dBm at the both the bands. For performance verifications, a new Figure-of-Merit for mixer (FoM mixer ) involving G c , noise figure NF, IP3 and dc power consumption P dc has been proposed. Using FoM mixer , it has been found that underlap mixer shows higher FoM Mixer compared to non-underlap bulk experimental results.

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Design of a subharmonic cascode FET mixer for an IMT‐2000 base station

Cited by 6 publications

References 3 publications

Design of a multiband VCO using a cascode FET mixer

Design of a multiband VCO using a cascode FET mixer

Error analysis on single sideband modulator

Cascode mixer for multiband wireless

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