Co-Design of Highly Efficient Power Amplifier and High-$Q$ Output Bandpass Filter

Chen, Kenle; Lee, Juseop; Chappell, William J.; Peroulis, Dimitrios

doi:10.1109/tmtt.2013.2284485

Cited by 85 publications

(39 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1(a) as output matching network of the PA. It is assumed that R opt > R L , which is usually the case for GaN transistors 2 . Neglecting loss of passive components, it can be shown that the following conditions should be satisfied at the center of the frequency band, ω c = √ ω L ω H , to achieve the optimum load resistance…”

Section: A Output Matching Networkmentioning

confidence: 99%

“…In a broadband transmitter, the PA is normally followed by a bandpass filter (BPF) to suppress out-of-band distortions. It is desirable to embed the filtering function into the PA circuit to improve efficiency and reduce size of the overall system [2]. Linearity of the PA is of paramount importance to accommodate spectrally efficient modulated signals with non-constant envelope.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Broadband Fully Integrated GaN Power Amplifier With Embedded Minimum Inductor Bandpass Filter and AM–PM Compensation

Nikandish

Staszewski

Zhu

2019

IEEE Solid-State Circuits Lett.

View full text Add to dashboard Cite

In this paper, we present a design technique for broadband linearized fully integrated GaN power amplifiers (PAs). The minimum inductor bandpass filter structure is used as the output matching network to achieve low loss and high out-ofband attenuation. Two parallel transistors with unbalanced gate biases are used to mitigate nonlinearity of their transconductance and input capacitance, and consequently, compensate AM-PM distortion of the PA. A fully integrated GaN PA prototype provides 35.1-38.9 dBm output power and 40-55% power-added efficiency (PAE) in 2.0-4.0 GHz. For a 64-QAM signal with 8-dB peak-to-average power ratio (PAPR) and 100-MHz bandwidth at 2.4 GHz, average output power of 32.7 dBm and average PAE of 31% are measured with −30.2 dB error vector magnitude (EVM).

show abstract

Section: A Output Matching Networkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Broadband Fully Integrated GaN Power Amplifier With Embedded Minimum Inductor Bandpass Filter and AM–PM Compensation

Nikandish

Staszewski

Zhu

2019

IEEE Solid-State Circuits Lett.

View full text Add to dashboard Cite

show abstract

“…For a synchronously tuned filter, . Under the condition , the normalized input impedance can be expressed [26] (4)…”

Section: A Theoretical Basismentioning

confidence: 99%

Compact Tunable Filtering Power Divider With Constant Absolute Bandwidth

Gao

Zhang

Xue

2015

IEEE Trans. Microwave Theory Techn.

View full text Add to dashboard Cite

This paper presents a novel frequency-agile filtering power divider with constant absolute bandwidth and high selectivity. The proposed design utilizes four coupled resonators to obtain the two functions of power division and filtering. Synthesis of the filtering power divider is carried out and the design guidelines are given. Varactors are then loaded to the resonators to enable frequency tuning. By using capacitors as well as magnetic and electric coupling to obtain required external quality factors and coupling coefficients, a constant absolute bandwidth is maintained when tuning the frequency. To demonstrate the validity of the proposed design, a circuit was fabricated. Experimental results show that the operating frequency can be changed from 0.62 to 0.85 GHz with the 3-dB absolute bandwidth of 60 2.5 MHz. Moreover, transmission zeros are generated near the passband, resulting in high selectivity for each tuning state. Comparisons between the measured and simulated results are presented and good agreement is observed.Index Terms-Bandpass response, constant absolute bandwidth, high selectivity, integration, tunable power divider.

show abstract

“…However, in many applications, a filter network is used in the circumstance in which the reference impedance at one end is a complex-valued impedance. Such complex-valued impedance could be the input impedance of an antenna prefixed to the filter [5], or to the output impedance of a power amplifier suffixed to the filter in a front-end system [6]. To extend the application of direct synthesis, an approach based on the power wave renormalization theory was proposed in [7]and [8].…”

Section: Introductionmentioning

confidence: 99%

A General Synthesis Approach of Coupling Matrix With Arbitrary Reference Impedances

Ge¹,

Zhu²,

Jiang³

et al. 2015

IEEE Microw. Wireless Compon. Lett.

View full text Add to dashboard Cite

In this letter, a general approach is presented to synthesize the coupling matrix that matches to arbitrary frequency-invariant complex source and load. The approach converts the objective scattering matrix and reference impedances into an admittance matrix of multicoupled circuit based on the definition of power wave. The proposed method was verified by numerical and also simulated tests carried out with various complex reference impedances.

show abstract

Co-Design of Highly Efficient Power Amplifier and High-$Q$ Output Bandpass Filter

Cited by 85 publications

References 25 publications

Broadband Fully Integrated GaN Power Amplifier With Embedded Minimum Inductor Bandpass Filter and AM–PM Compensation

Broadband Fully Integrated GaN Power Amplifier With Embedded Minimum Inductor Bandpass Filter and AM–PM Compensation

Compact Tunable Filtering Power Divider With Constant Absolute Bandwidth

A General Synthesis Approach of Coupling Matrix With Arbitrary Reference Impedances

Contact Info

Product

Resources

About