Process Variation Aware Wide Tuning Band Pass Filter for Steep Roll-Off High Rejection

Algorithm 2

Process variation aware tunable BPF design approach.

Given: , BW₀, and initial values of , , .

Input: and

Objective: tunable BPF to meet and BW₀

Output: , ,

Design approach: //Stage A to meet the specified (Steps (1)–(10))//

(1) Find the range of () in Table 2;

(2) Set initial values , , and set , , , , , , , , , , ;

(3)  Repeat

(4)  do AC simulation;

(5)  decrease by ;

(6)  Until ;

(7)  Repeat

(8)    do AC simulation;

(9)    decrease by ;

(10)   Until ;

Design approach: //Stage B to meet the specified BW₀ (Steps (11)–(17))//

(11) Find and its corresponding BW_min in Table 2;

(12) If BW₀ < BW_min then break;

(13) Else

(14) Do {

(15)    decreases inductor by ;

(16)    do AC simulation to find the bandwidth BW;

(17) } While ;

Design approach: //Stage C to calibrate BPF design after considering process variations (Steps (18)–(32))//

(18) Select (i.e., ) cases of BPF designs with different , BW₀ and after Stage A and B;

(19)   Perform Monte Carlo analysis to obtain and for BW;

(20)  Compute ()); //calculate the BW deviation

(21)   Choose top 30% cases having the worst BW deviation and find their center frequency () and corresponding gain ();

(22) Compute the average of center frequency () and gain deviation ()

(23) Compute from (17);

(24) For to 30 //consider the top 30 cases

(25)  ;

(26)  do AC simulation;

(27)  if BW_new() > BW_old() then set BW() = BW_new();

(28)  else ;

(29)    do AC simulation;

(30)    set BW() = BW_new()};

(31)  end if;

(32) End for;