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LPF_Bessel (Lowpass Filter, Bessel-Thompson)

Symbol

Available in ADS and RFDE

Parameters

Name

Description

Units

Default

Fpass

Passband edge frequency

GHz

1

Apass

Attenuation at passband edges

dB

3

GDpass

Group delay rolloff at passband edge, 0 < GDpass < 1

None

0.9

StopType

Stopband input impedance type: OPEN or SHORT

None

open

MaxRej

Maximum rejection level

dB

None

N

Filter order (if N > 0, it overwrites BWstop and Astop)); if not given, it is calculated based on BWpass, Apass and GDpass

None

0

IL

Passband insertion loss

dB

0

Qu

Unloaded quality factor for resonators, default setting is an infinite Qu and expresses a dissipationless resonant circuit.

None

1e308

Z1

Input port reference impedance

Ohm

50

Z2

Output port reference impedance

Ohm

50

Temp

Temperature

°C

None

Range of Usage

Fpass > 0
0.01 ≤ Apass ≤ 3.0
0 < GDpass < 1
1 ≤ N ≤ 15
Qu ≥ 1

Notes/Equations
  1. Refer to Filter Categories.
  2. For information on LPF behavior at DC, refer to Lowpass Filter Behavior at DC.
  3. This component has no default artwork associated with it.
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