 represented by Equations 0 and 0, respectively.                               R                      i            ⁢                                                  ⁢            n                          =                                            0              ⁢                                                (                                                            r                      b                                        +                                          r                      e                                                        )                                0                                      +                          0              ⁢                                                (                                                            ω                      T                                        ω                                    )                                0                            ⁢                                                (                                                            0                                              g                        m                                                              +                                          r                      e                                                        )                                0                                                                        (                                                r                  b                                +                                  r                  e                                            )                        -                                                            (                                                            ω                      T                                        ω                                    )                                0                            ⁢                              (                                                      0                                          g                      m                                                        +                                      r                    e                                                  )                                                                        [                  Equation          ⁢                                          ⁢          0                ]                                           C                      i            ⁢                                                  ⁢            n                          =                                            (                                                ω                  T                                                  ω                  0                                            )                        ⁢                          (                                                0                                      g                    m                                                  +                                  r                  b                                +                                  0                  ⁢                                      r                    e                                                              )                                                          0              ⁢                                                (                                                            r                      b                                        +                                          r                      e                                                        )                                0                                      +                          0              ⁢                                                (                                                            ω                      T                                        ω                                    )                                0                            ⁢                                                (                                                            0                                              g                        m                                                              +                                          r                      e                                                        )                                0                                                                        [                  Equation          ⁢                                          ⁢          0                ]             Here,             ω      T        =                  0        ⁢        π        ⁢                                  ⁢                  f          T                    =                        g          m                                      C            π                    +                      C            μ                                ,and fT, gm, rb, and re denote a maximum transition frequency, a transconductance, an intrinsic base resistance, and an emitter resistance of a transistor